Zenith-List Digest Archive

Sat 07/05/03


Total Messages Posted: 33



Today's Message Index:
----------------------
 
     1. 02:24 AM - Re: Aileron flutter (Phil & Michele Miller)
     2. 03:17 AM - Re: Aileron flutter (Dave Austin)
     3. 03:24 AM - CH300 Aileron Flutter (lehmansmtl@netzero.com)
     4. 05:57 AM - Zodiac Flaperons (Phil Raker)
     5. 06:27 AM - Connector at B6 (Bill Steer)
     6. 06:47 AM - Re: 601HD lower front longeron (Larry McFarland)
     7. 07:04 AM - Inspection holes for control cables (Robert Rehmel)
     8. 07:16 AM - Re: Connector at B6 (Larry McFarland)
     9. 07:29 AM - Re: Inspection holes for control cables (Larry McFarland)
    10. 07:36 AM - Re: Inspection holes for control cables (Michel Therrien)
    11. 09:15 AM - Re: Inspection holes for control cables (Bill Steer)
    12. 09:33 AM - Re: Aileron flutter (Ray Montagne)
    13. 09:41 AM - Re: Zygon Tubing and Grommets... (Ray Montagne)
    14. 10:01 AM - Re: Zygon Tubing and Grommets... ()
    15. 11:05 AM - Re: Aileron flutter (Fred or Sandy Hulen)
    16. 11:31 AM - Re: Aileron flutter (eldo)
    17. 12:19 PM - [ Brenton E. Battles ] : New Email List Photo Share Available! (Email List Photo Shares)
    18. 12:27 PM - Re: Zygon Tubing and Grommets... (Don Honabach)
    19. 12:28 PM - [ Gary Zilik ] : New Email List Photo Share Available! (Email List Photo Shares)
    20. 12:28 PM - Re: Zygon Tubing and Grommets... (Ray Montagne)
    21. 12:29 PM - [ Philip Polstra ] : New Email List Photo Share Available! (Email List Photo Shares)
    22. 12:30 PM - Re: [ Brenton E. Battles ] : New Email List Photo Share Available! (Michel Therrien)
    23. 12:32 PM - Re: Aileron flutter (Ray Montagne)
    24. 12:48 PM - Re: [ Philip Polstra ] : New Email List Photo Share Available! (Don Walker)
    25. 12:48 PM - Re: Weatherstrip adhesive (Michel Therrien)
    26. 01:23 PM - Re: Aileron flutter required 5, MAILTO_TO_SPAM_ADDR, QUOTED_EMAIL_TEXT, (George Swinford)
    27. 03:35 PM - Re: Weatherstrip adhesive (Fred or Sandy Hulen)
    28. 06:43 PM - Re: Weatherstrip adhesive (Winston Ellis)
    29. 07:11 PM - Re: XL Canopy Lock (Tim & Diane Shankland)
    30. 09:40 PM - Re: Aileron flutter  (Jeff Paden)
    31. 09:56 PM - Re: XL Canopy Lock (Michel Therrien)
    32. 09:58 PM - Re: Aileron flutter  (n282rs)
    33. 11:12 PM - Re: Aileron flutter  (Phil & Michele Miller)
 
 
 


Message 1


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    Time: 02:24:36 AM PST US
    From: "Phil & Michele Miller" <millerpg@ps.gen.nz>
    Subject: Aileron flutter
    --> Zenith-List message posted by: "Phil & Michele Miller" <millerpg@ps.gen.nz> Hi, Jeff, Firstly, I agree wholeheartedly with Gary Power's comments; flutter can be a killer and is NOT to be taken lightly. You definitely need expert advice here. This next bit is just for general information; I am no expert and am NOT offering any advice here. The reason that your problem became worse when you centralised the ailerons is this... In the reflexed (slightly up) position there was an aerodynamic load on the top of each surface which was countering the upward flutter motion. When you neutralised the ailerons you removed this countering force making the flutter more pronounced. PLEASE stay grounded until you get this sorted! Cheers, Phil Miller New Zealand -----Original Message----- From: owner-zenith-list-server@matronics.com [mailto:owner-zenith-list-server@matronics.com] On Behalf Of Jeff Paden Subject: Zenith-List: Aileron flutter --> Zenith-List message posted by: "Jeff Paden" <jeffpaden@madbbs.com> I hope some one on this list can help me a bit here. We just spent the last 6 months rebuilding our CH-300 and took her for a test flight yesterday. During the test flight we ran into a problem. At about 130 mph our ailerons started to flutter. Not badly, but enough that I knew something was not quite right. We landed safely and checked all the cables etc. We found that when the stick was centered we had both ailerons in a slightly up position. I thought this was the problem so I adjusted the rods so that both ailerons were level with the top of the wing when the stick was centered. I tested her again and found that the flutter problem was now even worse than before. They flutter at about 120 mph now. Does anyone have any idea what I may be doing wrong and how I can fix this problem?=0D =0D Thank you for any help you can offer. If you would like you can email me off the list at jeffpaden@madbbs.com=0D =0D Jeff Paden direct advertising on the Matronics Forums.


    Message 2


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    Time: 03:17:46 AM PST US
    From: "Dave Austin" <daveaustin2@sprint.ca>
    Subject: Re: Aileron flutter
    --> Zenith-List message posted by: "Dave Austin" <daveaustin2@sprint.ca> I agree with the previous comments on your problem. As a "good to know" thought, my 601 developed rudder flutter, a slow but quite vigorous one, some years back, found to be slack cable tension. Had to fly home at 75 mph to stop it. Ever since at inspection time I've jacked the nosewheel off the ground and checked the tension in the flying position. The rudder cables slacken when the nosewheel is depressed due to the firewall angle and you don't want to over-tighten. Dave Austin 601HDS - 912


    Message 3


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    Time: 03:24:43 AM PST US
    Subject: CH300 Aileron Flutter
    From: lehmansmtl@netzero.com
    --> Zenith-List message posted by: lehmansmtl@netzero.com Jeff, 1. Check your aileron cable tension. Chris H. has maintained that the CH300 does not need aileron balance weights (to prevent flutter) if the cable tension is correct. 2. Even with correct cable tension, I have observed 'incipient' flutter but it damps out quickly and I considered the aircraft safe without balancing the ailerons. 3. However, you seem to be flying faster and might consider adding the balance weights even with correct control cable tension. You'll find a suggested design for adding aileron balance in an old Zenith newsletter. Mike Time: 03:17:08 PM PST US From: "Jeff Paden" <jeffpaden@madbbs.com> Subject: Zenith-List: Aileron flutter --> Zenith-List message posted by: "Jeff Paden" <jeffpaden@madbbs.com> I hope some one on this list can help me a bit here. We just spent the last 6 months rebuilding our CH-300 and took her for a test flight yesterday. During the test flight we ran into a problem. At about 130 mph our ailerons started to flutter. Not badly, but enough that I knew something was not quite right. We landed safely and checked all the cables etc. We found that when the stick was centered we had both ailerons in a slightly up position. I thought this was the problem so I adjusted the rods so that both ailerons were level with the top of the wing when the stick was centered. I tested her again and found that the flutter problem was now even worse than before. They flutter at about 120 mph now. Does anyone have any idea what I may be doing wrong and how I can fix this problem?=0D =0D Thank you for any help you can offer. If you would like you can email me off the list at jeffpaden@madbbs.com=0D =0D Jeff Paden The best thing to hit the internet in years - NetZero HiSpeed! Surf the web up to FIVE TIMES FASTER! Only $14.95/ month -visit www.netzero.com to sign up today!


    Message 4


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    Time: 05:57:00 AM PST US
    From: Phil Raker <phadr1@yahoo.com>
    Subject: Zodiac Flaperons
    --> Zenith-List message posted by: Phil Raker <phadr1@yahoo.com> Hello, List: Do any of you from "Down-Under" know a builder named Charles Furlonger? I haven't seen any postings from him on this list. According to a recent issue of Zenair News he has a design for drooping the ailerons on a 601 to achieve flap effect which has been approved by Cris H. I'd like to contact him to compare his system with the one I'm building. I've sent messages twice to the e-mail address that Nick gave me, but have received no response. Do any of you know Charles, or are any of you familiar with his plane/design? You or he may contact me off-list at: phadr1@yahoo.com Phil Raker - N556P: HDS/Stratus; about 3/4 complete (trying to get back to building after flood, job change, and interstate move) __________________________________


    Message 5


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    Time: 06:27:11 AM PST US
    From: "Bill Steer" <bsteer@gwi.net>
    Subject: Connector at B6
    --> Zenith-List message posted by: "Bill Steer" <bsteer@gwi.net> Hello. I'm looking for a connector for the five elevator trim wires and perhaps the rudder nav light at bulkhead B6 - the one just in front of the elevator - on my 601. Some sort of waterproof connector would seem to be the thing to use there, but I'm not sure about the current carrying capacity for the light. I could run the wires for the light separately, of course. What sort of connector have folks used there? Thanks for any help and information. Bill


    Message 6


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    Time: 06:47:30 AM PST US
    From: "Larry McFarland" <larrymc@qconline.com>
    Subject: Re: 601HD lower front longeron
    --> Zenith-List message posted by: "Larry McFarland" <larrymc@qconline.com> ----- Original Message ----- From: "Bill Steer" <bsteer@gwi.net> Subject: Zenith-List: 601HD lower front longeron > --> Zenith-List message posted by: "Bill Steer" <bsteer@gwi.net> > > There was recently a post (last few days) that repeated a post from May, 2000. The post mentioned that the 13 x A5 rivets that attach the lower longeron 6F5-4 to the lower middle longeron 6F1-5 had been replaced by seven 3/16" bolts. I've checked both the addendum to my plans and the CAD drawings on the builders site; neither of those mention the change. I'm just at the stage where I'm going to be installing the lower front longerons, so would like to know if this change is documented somewhere. Can somebody refer me to an appropriate document? > > Thanks very much for any help. Bill, I'd not trust the post you mention and would contact Nick on this one. My 4th edition drawings still show A5 rivets. The use of bolts doesn't make any sense on this splice because you're hopefully never going to take it apart. The drawings show 160mm overlap, 9 rivets in it and 9 above and below in the skins. Why would you use bolts? Larry McFarland - 601hds


    Message 7


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    Time: 07:04:17 AM PST US
    From: "Robert Rehmel" <traveler601@earthlink.net>
    Subject: Inspection holes for control cables
    --> Zenith-List message posted by: "Robert Rehmel" <traveler601@earthlink.net> I am getting ready to attach my rudder control cables. I have looked at the drawings and they show the adjusting point back in the tail area with a note to "Place it in a convenient spot". With the baggage floor in and the top skins on. I figure you will need an inspection hole in the belly to get at the adjustment link. Anybody have any ideas? Bob


    Message 8


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    Time: 07:16:17 AM PST US
    From: "Larry McFarland" <larrymc@qconline.com>
    Subject: Re: Connector at B6
    --> Zenith-List message posted by: "Larry McFarland" <larrymc@qconline.com> ----- Original Message ----- From: "Bill Steer" <bsteer@gwi.net> Subject: Zenith-List: Connector at B6 > --> Zenith-List message posted by: "Bill Steer" <bsteer@gwi.net> > > Hello. I'm looking for a connector for the five elevator trim wires and perhaps the rudder nav light at bulkhead B6 - the one just in front of the elevator - on my 601. Some sort of waterproof connector would seem to be the thing to use there, but I'm not sure about the current carrying capacity for the light. I could run the wires for the light separately, of course. What sort of connector have folks used there? > > Thanks for any help and information. > > Bill Bill, I've used the multi-pin Mate-n-lok connectors found at Terminal Town on the web for the Mac trim and used Sillicone adhesive to seal ends. These seem to be popular if difficult to solder and crimp. The AeroElectric connection describes these problems in several articles. The rudder light used a two-pin mate-n-lock from Terminal Town but will go with knife-connectors if they get redone. Larry


    Message 9


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    Time: 07:29:27 AM PST US
    From: "Larry McFarland" <larrymc@qconline.com>
    Subject: Re: Inspection holes for control cables
    --> Zenith-List message posted by: "Larry McFarland" <larrymc@qconline.com> ----- Original Message ----- From: "Robert Rehmel" <traveler601@earthlink.net> Subject: Zenith-List: Inspection holes for control cables > --> Zenith-List message posted by: "Robert Rehmel" <traveler601@earthlink.net> > > > I am getting ready to attach my rudder control cables. I have looked at > the drawings and they show the adjusting point back in the tail area with a > note to "Place it in a convenient spot". With the baggage floor in and the > top skins on. I figure you will need an inspection hole in the belly to > get at the adjustment link. > > Anybody have any ideas? > > Bob Bob, The adjustment link you speak of probably should be replaced with the conventional barrel adjusting turnbuckles available at Wicks or Aircraft Spruce. The angle type adjustment device didn't do anyone any favors in its design. Then you can put the turnbuckles on the rudder horn at the tail where they are accessable. As far as an inspection hole goes, you might use a hand-turned fly cutter at the side just ahead of 6F2-1 to feed cables to the rudder and elevator from there. Images available at my website, www.macsmachine.com in the fuselage section. Larry McFarland - 601hds


    Message 10


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    Time: 07:36:49 AM PST US
    From: Michel Therrien <mtherr@yahoo.com>
    Subject: Re: Inspection holes for control cables
    --> Zenith-List message posted by: Michel Therrien <mtherr@yahoo.com> I put all my adjusters (turnbuckles) behind the seats. No inspection hole needed. > ----- Original Message ----- > > --> Zenith-List message posted by: "Robert Rehmel" > > I am getting ready to attach my rudder control > cables. I have looked at > > the drawings and they show the adjusting point > back in the tail area with > a > > note to "Place it in a convenient spot". With the > baggage floor in and > the > > top skins on. I figure you will need an > inspection hole in the belly to > > get at the adjustment link. > > > > Anybody have any ideas? ===== ---------------------------- Michel Therrien CH601-HD http://mthobby.pcperfect.com/ch601 http://www.zenithair.com/bldrlist/profiles/mthobby http://pages.infinit.net/mthobby __________________________________


    Message 11


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    Time: 09:15:26 AM PST US
    From: "Bill Steer" <bsteer@gwi.net>
    Subject: Re: Inspection holes for control cables
    --> Zenith-List message posted by: "Bill Steer" <bsteer@gwi.net> I used turnbuckles instead of the aluminum angles supplied by ZAC. One of those turnbuckles attaches directly to the upper elevator horn and is accessible through the removable rudder fairing. As I recall, ACS didn't have the correct turnbuckle, so I had to order it from Wickes (the fork end has to clear the end of the horn). The correct fork end is MS21252-4. Other turnbuckles are either located behind the seat or attached directly to controls. I made the arm rest removable so I could get in there to inspect and adjust. Bill ----- Original Message ----- From: "Robert Rehmel" <traveler601@earthlink.net> Subject: Zenith-List: Inspection holes for control cables > --> Zenith-List message posted by: "Robert Rehmel" <traveler601@earthlink.net> > > > I am getting ready to attach my rudder control cables. I have looked at > the drawings and they show the adjusting point back in the tail area with a > note to "Place it in a convenient spot". With the baggage floor in and the > top skins on. I figure you will need an inspection hole in the belly to > get at the adjustment link. > > Anybody have any ideas? > > Bob > >


    Message 12


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    Time: 09:33:28 AM PST US
    Subject: Re: Aileron flutter
    From: Ray Montagne <ac6qj@earthlink.net>
    --> Zenith-List message posted by: Ray Montagne <ac6qj@earthlink.net> On 7/4/03 3:18 PM, "Jeff Paden" <jeffpaden@madbbs.com> wrote: > --> Zenith-List message posted by: "Jeff Paden" <jeffpaden@madbbs.com> > Each one of those flutter cycles counts as one cycle against the total number of cycles allowable for the life of the aileron hinge. A 10 cycle per second flutter would a 10,000 cycle life to 1000 seconds of operation which is just under 16 minutes and 40 seconds of flight time... DO NOT ACHIVE Best Regards, Ray Montagne Cupertino, CA =========================================================================== Zenith Aircraft Zodiac CH-601-XL, Jabiru 3300 Construction Log & Photos: <http://home.earthlink.net/~ac6qj/zodiac> Build Status: Rudder completed Elevator Completed Stabilizer Completed Flaps Completed Ailerons Completed Right Wing Under Completed Right Wing Tip Completed Left Wing Under Construction ===========================================================================


    Message 13


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    Time: 09:41:37 AM PST US
    Subject: Re: Zygon Tubing and Grommets...
    From: Ray Montagne <ac6qj@earthlink.net>
    --> Zenith-List message posted by: Ray Montagne <ac6qj@earthlink.net> On 5/26/03 8:30 PM, "Don Honabach" <don@pcperfect.com> wrote: > --> Zenith-List message posted by: "Don Honabach" <don@pcperfect.com> > > If anyone is or has used the rubber grommets from Aircraft Spruce to aid > in running your Tygon based tubing for your static/pitot lines, most > likely you'll want to replace this right away. I ran mine in my wing > with these grommets and the rubber grommets reacted with the Tygon > tubing and now the tubing is destoryed in any area where the tubing came > into contact with the grommet :( This post really concerned me and I wanted to find an alternative that would not require a major service inside the wing sometime down the road. I've installed threaded PVC feed-through fittings (available in the electrical department of Orchard Supply Hardware). Anyone interested in seeing photo can view one at <http://12.234.74.66/zodiac/DSCN2702.jpg> or click on the "Left Wing" link on my web page and scroll down to the entry for 4 July 2003. DO NOT ACHIVE Best Regards, Ray Montagne Cupertino, CA =========================================================================== Zenith Aircraft Zodiac CH-601-XL, Jabiru 3300 Construction Log & Photos: <http://home.earthlink.net/~ac6qj/zodiac> Build Status: Rudder completed Elevator Completed Stabilizer Completed Flaps Completed Ailerons Completed Right Wing Under Completed Right Wing Tip Completed Left Wing Under Construction ===========================================================================


    Message 14


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    Time: 10:01:03 AM PST US
    From: <n5ff@attbi.com>
    Subject: Zygon Tubing and Grommets...
    --> Zenith-List message posted by: <n5ff@attbi.com> The rubber O ring on this PVC fixture will dry out and fall off in a year or two from the heat. I've used those in various applications, and the O ring fell off in less than a year in Texas heat. This will leave the fixture loose....it may not be a real issue here, but it may work itself out then you are risking the tubing, cables, whatever you are running into it getting cut or damaged by the metal sharp edge. You don't need the O ring, just take it off, tighten the two halves together and use few drops of contact cement or glue on the threads. -----Original Message----- From: owner-zenith-list-server@matronics.com [mailto:owner-zenith-list-server@matronics.com] On Behalf Of Ray Montagne Subject: Re: Zenith-List: Zygon Tubing and Grommets... --> Zenith-List message posted by: Ray Montagne <ac6qj@earthlink.net> On 5/26/03 8:30 PM, "Don Honabach" <don@pcperfect.com> wrote: > --> Zenith-List message posted by: "Don Honabach" <don@pcperfect.com> > > If anyone is or has used the rubber grommets from Aircraft Spruce to aid > in running your Tygon based tubing for your static/pitot lines, most > likely you'll want to replace this right away. I ran mine in my wing > with these grommets and the rubber grommets reacted with the Tygon > tubing and now the tubing is destoryed in any area where the tubing came > into contact with the grommet :( This post really concerned me and I wanted to find an alternative that would not require a major service inside the wing sometime down the road. I've installed threaded PVC feed-through fittings (available in the electrical department of Orchard Supply Hardware). Anyone interested in seeing photo can view one at <http://12.234.74.66/zodiac/DSCN2702.jpg> or click on the "Left Wing" link on my web page and scroll down to the entry for 4 July 2003. DO NOT ACHIVE Best Regards, Ray Montagne Cupertino, CA ======================================================================== === Zenith Aircraft Zodiac CH-601-XL, Jabiru 3300 Construction Log & Photos: <http://home.earthlink.net/~ac6qj/zodiac> Build Status: Rudder completed Elevator Completed Stabilizer Completed Flaps Completed Ailerons Completed Right Wing Under Completed Right Wing Tip Completed Left Wing Under Construction ======================================================================== ===


    Message 15


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    Time: 11:05:28 AM PST US
    From: "Fred or Sandy Hulen" <hulens61@birch.net>
    Subject: Re: Aileron flutter
    --> Zenith-List message posted by: "Fred or Sandy Hulen" <hulens61@birch.net> A 10 cycle > per second flutter would a 10,000 cycle life to 1000 seconds of operation > which is just under 16 minutes and 40 seconds of flight time... > Oshkosh he described the testing that had been done on these and it was a far longer time and cycle period. Fred do not archive


    Message 16


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    Time: 11:31:26 AM PST US
    From: eldo <eldo@unb.ca>
    Subject: Aileron flutter
    required 5, MAILTO_TO_SPAM_ADDR, QUOTED_EMAIL_TEXT, --> Zenith-List message posted by: eldo <eldo@unb.ca> One other minor point on the fatigue issue. The CH300 uses an actual hinge not the bending skin hinge Chris designed for the 601. Fatigue would not be the same issue with an actual hinge. Eldo H. >===== Original Message From "Fred or Sandy Hulen" <hulens61@birch.net> ===== >--> Zenith-List message posted by: "Fred or Sandy Hulen" <hulens61@birch.net> > >A 10 cycle >> per second flutter would a 10,000 cycle life to 1000 seconds of operation >> which is just under 16 minutes and 40 seconds of flight time... >> > > ++ I'm curious where you got the numbers. When I talked to Chris Heintz at >Oshkosh he described the testing that had been done on these and it was a >far longer time and cycle period. > >Fred > >do not archive > > Eldo Hildebrand Assistant Dean of Engineering University of New Brunswick P.O. Box 4400 Fredericton, NB E3B 5A3


    Message 17


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    Time: 12:19:09 PM PST US
    Subject: [ Brenton E. Battles ] : New Email List Photo Share Available!
    From: Email List Photo Shares <pictures@matronics.com>
    --> Zenith-List message posted by: Email List Photo Shares <pictures@matronics.com> A new Email List Photo Share is available: Poster: Brenton E. Battles <brentbattles@charter.net> Subject: Zenith-List 601 POH Template (pdf) http://www.matronics.com/photoshare/brentbattles@charter.net.07.05.2003/index.html o Main Photo Share Index http://www.matronics.com/photoshare o Submitting a Photo Share If you wish to submit a Photo Share of your own, please include the following information along with your email message and files: 1) Email List or Lists that they are related to: 2) Your Full Name: 3) Your Email Address: 4) One line Subject description: 5) Multi-line, multi-paragraph description of topic: 6) One-line Description of each photo or file: Email the information above and your files and photos to: pictures@matronics.com


    Message 18


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    Time: 12:27:47 PM PST US
    Subject: Zygon Tubing and Grommets...
    From: "Don Honabach" <don@pcperfect.com>
    --> Zenith-List message posted by: "Don Honabach" <don@pcperfect.com> Ray, I was the guy the posted the original message and I've changed my rubber grommets for the tygon tubing to 'pop-in plastic guides/grommets'. Purchased a bunch of them from Aircraft Spruce (ordered like 20 of each size so I could just use as needed as I was plumbing everything). They've worked out great so far. If you can't find them in the catalog, let me know and I'll track them down and send you the page number and/or part #s. Don -----Original Message----- From: Ray Montagne [mailto:ac6qj@earthlink.net] Subject: Re: Zenith-List: Zygon Tubing and Grommets... --> Zenith-List message posted by: Ray Montagne <ac6qj@earthlink.net> On 5/26/03 8:30 PM, "Don Honabach" <don@pcperfect.com> wrote: > --> Zenith-List message posted by: "Don Honabach" <don@pcperfect.com> > > If anyone is or has used the rubber grommets from Aircraft Spruce to > aid in running your Tygon based tubing for your static/pitot lines, > most likely you'll want to replace this right away. I ran mine in my > wing with these grommets and the rubber grommets reacted with the > Tygon tubing and now the tubing is destoryed in any area where the > tubing came into contact with the grommet :( This post really concerned me and I wanted to find an alternative that would not require a major service inside the wing sometime down the road. I've installed threaded PVC feed-through fittings (available in the electrical department of Orchard Supply Hardware). Anyone interested in seeing photo can view one at <http://12.234.74.66/zodiac/DSCN2702.jpg> or click on the "Left Wing" link on my web page and scroll down to the entry for 4 July 2003. DO NOT ACHIVE Best Regards, Ray Montagne Cupertino, CA ======================================================================== === Zenith Aircraft Zodiac CH-601-XL, Jabiru 3300 Construction Log & Photos: <http://home.earthlink.net/~ac6qj/zodiac> Build Status: Rudder completed Elevator Completed Stabilizer Completed Flaps Completed Ailerons Completed Right Wing Under Completed Right Wing Tip Completed Left Wing Under Construction ======================================================================== === direct advertising on the Matronics Forums.


    Message 19


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    Time: 12:28:38 PM PST US
    Subject: [ Gary Zilik ] : New Email List Photo Share Available!
    From: Email List Photo Shares <pictures@matronics.com>
    --> Zenith-List message posted by: Email List Photo Shares <pictures@matronics.com> A new Email List Photo Share is available: Poster: Gary Zilik <zilik@direcpc.com> Subject: CH Products Stick Grip http://www.matronics.com/photoshare/zilik@direcpc.com.07.05.2003/index.html o Main Photo Share Index http://www.matronics.com/photoshare o Submitting a Photo Share If you wish to submit a Photo Share of your own, please include the following information along with your email message and files: 1) Email List or Lists that they are related to: 2) Your Full Name: 3) Your Email Address: 4) One line Subject description: 5) Multi-line, multi-paragraph description of topic: 6) One-line Description of each photo or file: Email the information above and your files and photos to: pictures@matronics.com


    Message 20


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    Time: 12:28:41 PM PST US
    Subject: Re: Zygon Tubing and Grommets...
    From: Ray Montagne <ac6qj@earthlink.net>
    --> Zenith-List message posted by: Ray Montagne <ac6qj@earthlink.net> On 7/5/03 10:00 AM, "n5ff@attbi.com" <n5ff@attbi.com> wrote: > --> Zenith-List message posted by: <n5ff@attbi.com> > > The rubber O ring on this PVC fixture will dry out and fall off in a > year or two from the heat. I've used those in various applications, and > the O ring fell off in less than a year in Texas heat. This will leave > the fixture loose....it may not be a real issue here, but it may work > itself out then you are risking the tubing, cables, whatever you are > running into it getting cut or damaged by the metal sharp edge. You > don't need the O ring, just take it off, tighten the two halves together > and use few drops of contact cement or glue on the threads. > Thanks for the tip! Will do! DO NOT ACHIVE Best Regards, Ray Montagne Cupertino, CA =========================================================================== Zenith Aircraft Zodiac CH-601-XL, Jabiru 3300 Construction Log & Photos: <http://home.earthlink.net/~ac6qj/zodiac> Build Status: Rudder completed Elevator Completed Stabilizer Completed Flaps Completed Ailerons Completed Right Wing Under Completed Right Wing Tip Completed Left Wing Under Construction ===========================================================================


    Message 21


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    Time: 12:29:38 PM PST US
    Subject: [ Philip Polstra ] : New Email List Photo Share Available!
    From: Email List Photo Shares <pictures@matronics.com>
    --> Zenith-List message posted by: Email List Photo Shares <pictures@matronics.com> A new Email List Photo Share is available: Poster: Philip Polstra <ppolstra@mindspring.com> Subject: Pictures from Stratus Teardown http://www.matronics.com/photoshare/ppolstra@mindspring.com.07.05.2003/index.html o Main Photo Share Index http://www.matronics.com/photoshare o Submitting a Photo Share If you wish to submit a Photo Share of your own, please include the following information along with your email message and files: 1) Email List or Lists that they are related to: 2) Your Full Name: 3) Your Email Address: 4) One line Subject description: 5) Multi-line, multi-paragraph description of topic: 6) One-line Description of each photo or file: Email the information above and your files and photos to: pictures@matronics.com


    Message 22


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    Time: 12:30:22 PM PST US
    From: Michel Therrien <mtherr@yahoo.com>
    Subject: Re: [ Brenton E. Battles ] : New Email List Photo Share Available!
    --> Zenith-List message posted by: Michel Therrien <mtherr@yahoo.com> Is this manual available in MS Word format? do not archive --- Email List Photo Shares <pictures@matronics.com> wrote: > --> Zenith-List message posted by: Email List Photo > Shares <pictures@matronics.com> > > > A new Email List Photo Share is available: > > Poster: Brenton E. Battles > <brentbattles@charter.net> > > > Subject: Zenith-List 601 POH Template (pdf) > > ===== ---------------------------- Michel Therrien CH601-HD http://mthobby.pcperfect.com/ch601 http://www.zenithair.com/bldrlist/profiles/mthobby http://pages.infinit.net/mthobby __________________________________


    Message 23


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    Time: 12:32:15 PM PST US
    Subject: Re: Aileron flutter
    From: Ray Montagne <ac6qj@earthlink.net>
    --> Zenith-List message posted by: Ray Montagne <ac6qj@earthlink.net> On 7/5/03 11:14 AM, "Fred or Sandy Hulen" <hulens61@birch.net> wrote: > --> Zenith-List message posted by: "Fred or Sandy Hulen" <hulens61@birch.net> > > A 10 cycle >> per second flutter would a 10,000 cycle life to 1000 seconds of operation >> which is just under 16 minutes and 40 seconds of flight time... >> > > ++ I'm curious where you got the numbers. When I talked to Chris Heintz at > Oshkosh he described the testing that had been done on these and it was a > far longer time and cycle period. > > Fred > > do not archive I did not state the numbers were for the Zodiac. I was only trying to provide an example of how flutter cycles relate to the cycle life of a part. Lacking Chris's numbers in a handy place OR any information on the frequency of the flutter would not allow me (or anyone else) to indicate how this aircraft has been influenced. The point was to show how flutter directly relates to the service life of a part and the danger presented. Please feel free to do your own math on Chris' numbers. DO NOT ACHIVE Best Regards, Ray Montagne Cupertino, CA =========================================================================== Zenith Aircraft Zodiac CH-601-XL, Jabiru 3300 Construction Log & Photos: <http://home.earthlink.net/~ac6qj/zodiac> Build Status: Rudder completed Elevator Completed Stabilizer Completed Flaps Completed Ailerons Completed Right Wing Under Completed Right Wing Tip Completed Left Wing Under Construction ===========================================================================


    Message 24


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    Time: 12:48:28 PM PST US
    From: "Don Walker" <dwalk3dw@msn.com>
    Subject: Re: [ Philip Polstra ] : New Email List Photo Share Available!
    Seal-Send-Time: Sat, 5 Jul 2003 14:48:23 -0500 --> Zenith-List message posted by: "Don Walker" <dwalk3dw@msn.com> Philip, My guess is that you had pieces of valve guide banging in your cylinders for quite a while, meaning hours of flying, prior to the failure which brought you down. Were you able to look at the valve guides, or was there any left. Eventually I would guess that the chipping away at the guide reduced its size until it let the valve go. From the pics there is evidence that this was beginning to occur in your "Good" cylinders, too. The pits in the bottom of the pistons are probably from pieces of valve guide. Did you check the guides in this head to see if they are intact? These pictures are just like the condition of my pistons after three failures with guides. My guess is that you will find what is left of knurled guides. All of my failures were on the intake. Thanks for posting the pics. x Stratus...still soob Don Walker ----- Original Message ----- From: Email List Photo Shares To: Email List Photo Shares Sent: Saturday, July 05, 2003 2:29 PM Subject: Zenith-List: [ Philip Polstra ] : New Email List Photo Share Available! --> Zenith-List message posted by: Email List Photo Shares <pictures@matronics.com> A new Email List Photo Share is available: Poster: Philip Polstra <ppolstra@mindspring.com> Subject: Pictures from Stratus Teardown http://www.matronics.com/photoshare/ppolstra@mindspring.com.07.05.2003/index.html o Main Photo Share Index http://www.matronics.com/photoshare o Submitting a Photo Share If you wish to submit a Photo Share of your own, please include the following information along with your email message and files: 1) Email List or Lists that they are related to: 2) Your Full Name: 3) Your Email Address: 4) One line Subject description: 5) Multi-line, multi-paragraph description of topic: 6) One-line Description of each photo or file: Email the information above and your files and photos to: pictures@matronics.com


    Message 25


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    Time: 12:48:51 PM PST US
    From: Michel Therrien <mtherr@yahoo.com>
    Subject: Re: Weatherstrip adhesive
    --> Zenith-List message posted by: Michel Therrien <mtherr@yahoo.com> I call everywhere I could and could'nt find PolyZap locally. One retailer had other ZAP products, but he said I would need to buy 6 bottles to justify an order to his supplier. I found one retailer that proposed me Flash glue, I believe made by NHP. Would this do the same? http://www.hobbysport.no/flash/flash1.htm --- Fred or Sandy Hulen <hulens61@birch.net> wrote: > --> Zenith-List message posted by: "Fred or Sandy > Hulen" <hulens61@birch.net> > > > The other one is Poly-Zap. There was > > a thread on this list several years ago about > Poly-Zap which you may find > > helpful. > > Bill > > ++ I can offer some information on this as I have > given clinics on "instant > glues" and have used more of the stuff than you can > ever imagine. One of my > friends said he wouldn't be surprised if I built a > house some day with the > stuff! Reading from the label on the container, it > says, "For specialty > plastics" "Ideal for Lexan repairs", "Strong and > flexible", etc. etc. Poly > Zap (a special version of super glue for "slick" > plastics) sure made the job > easy for me when I secured the rubber seals to the > canopy. After I had the > rubber in place and satisfied with the fit, I just > went along the rubber > strip about every 8", lifted the rubber up far > enough to squeeze a small > drop of the Poly Zap down in the bottom of the slot, > then held the rubber > down in place for about 15 seconds or so until the > Zap had "gone off" > (bonding by a rapid chemical reaction, not drying), > then went to the next > spot 8" away. After I had these spots "tacked" I > went in between each of > those with more spots. No need to use the stuff in > a continuous amount all > the way around. After I had the rubber spotted in > along the outside, I > lifted the canopy and did a few on the inside (not > vary many though). It > doesn't take much to completely secure the rubber > seal. Don't put enough in > there that it pushes out and shows when you press > the rubber down while it > sets. Using this method, you won't be trying to put > some sort of glue along > the whole thing and struggling to hold the whole > thing in place at the same > time. I did some test applications on some of the > scrap pieces that I had > cut off while fitting the canopy and you'll rip the > surface off the rubber > before it will come loose from the canopy. > > There are about 8 different types of Zap instant > glues made by Pacer > Products (thin, thick, slow, gel, oderless, for > nylon and delrin, etc.). > Poly Zap is not commonly used for normal wood and > plastic model building and > thus not regularly stocked by most hobby shops. If > you can't find it in > stock, wait for them to order it for you. My advice > is....... Use ONLY POLY > ZAP. DO NOT use the other ZAP brand instant glue > types as they are not > designed for long term bonding to slick acrylic > plastics. The will become > brittle and will break loose with time and flexing. > > Here's a valuable tip. Poly Zap tends to harden in > the container sooner > than other "instant glues". It's life can be > extended much longer if you > store it in the refrigerator between uses. Let it > come up to room > temperature before using it again. > > Fred Hulen > Jabiru 3300, 601HDS 50.5 hours > > > > Contributions > any other > Forums. > > latest messages. > List members. > > http://www.matronics.com/subscription > http://www.matronics.com/FAQ/Zenith-List.htm > Digests:http://www.matronics.com/digest/zenith-list > http://www.matronics.com/archives > http://www.matronics.com/photoshare > http://www.matronics.com/emaillists > > > > > ===== ---------------------------- Michel Therrien CH601-HD http://mthobby.pcperfect.com/ch601 http://www.zenithair.com/bldrlist/profiles/mthobby http://pages.infinit.net/mthobby __________________________________


    Message 26


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    Time: 01:23:40 PM PST US
    From: "George Swinford" <grs-pms@comcast.net>
    Subject: Re: Aileron flutter required 5, MAILTO_TO_SPAM_ADDR,
    QUOTED_EMAIL_TEXT, --> Zenith-List message posted by: "George Swinford" <grs-pms@comcast.net> The real danger from flutter isn't fatigue failure. Flutter can cause gross structural failure in just a few cycles, literally in a fraction of a second. I recall seeing an in-cockpit flight test movie of a flutter test on a modified Piper twin in which the time between the deliberate pulse of the yoke and disintegration of the airplane was only a few frames. The professional test pilot escaped by parachute and later showed the film to our EAA chapter. George Swinford Do not archive --- Original Message ----- From: "eldo" <eldo@unb.ca> Subject: RE: Zenith-List: Aileron flutter required 5, MAILTO_TO_SPAM_ADDR, QUOTED_EMAIL_TEXT, > --> Zenith-List message posted by: eldo <eldo@unb.ca> > > One other minor point on the fatigue issue. The CH300 uses an actual hinge > not the bending skin hinge Chris designed for the 601. Fatigue would not be > the same issue with an actual hinge. > > Eldo H. > > > >===== Original Message From "Fred or Sandy Hulen" <hulens61@birch.net> ===== > >--> Zenith-List message posted by: "Fred or Sandy Hulen" <hulens61@birch.net> > > > >A 10 cycle > >> per second flutter would a 10,000 cycle life to 1000 seconds of operation > >> which is just under 16 minutes and 40 seconds of flight time... > >> > > > > ++ I'm curious where you got the numbers. When I talked to Chris Heintz at > >Oshkosh he described the testing that had been done on these and it was a > >far longer time and cycle period. > > > >Fred > > > >do not archive > > > > > > Eldo Hildebrand > Assistant Dean of Engineering > University of New Brunswick > P.O. Box 4400 > Fredericton, NB > E3B 5A3 > >


    Message 27


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    Time: 03:35:11 PM PST US
    From: "Fred or Sandy Hulen" <hulens61@birch.net>
    Subject: Re: Weatherstrip adhesive
    --> Zenith-List message posted by: "Fred or Sandy Hulen" <hulens61@birch.net> > I found one retailer that proposed me Flash glue, I > believe made by NHP. Would this do the same? ++ I have no knowledge about Flash glue. If it specifically says it is a "flexible type", will work on Lexan, Nylon, or other slippery plastics AND rubber, than you can try it at your own risk. Fred do not archive


    Message 28


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    Time: 06:43:30 PM PST US
    From: Winston Ellis <w1mdi@cox-internet.com>
    Subject: Re: Weatherstrip adhesive
    --> Zenith-List message posted by: Winston Ellis <w1mdi@cox-internet.com> Try: http://www.houseofbalsa.com/e/env/0001kGMUrtvliPkzgE8h9L8/store/store-zap.html?link=/store/store-zap-tem.html&item=products:pt-22 Winston Ellis Ketchum, Idaho 701/Suzuki Michel Therrien wrote: > --> Zenith-List message posted by: Michel Therrien <mtherr@yahoo.com> > > I call everywhere I could and could'nt find PolyZap > locally. One retailer had other ZAP products, but he > said I would need to buy 6 bottles to justify an order > to his supplier. > > I found one retailer that proposed me Flash glue, I > believe made by NHP. Would this do the same? > > http://www.hobbysport.no/flash/flash1.htm > > --- Fred or Sandy Hulen <hulens61@birch.net> wrote: > > --> Zenith-List message posted by: "Fred or Sandy > > Hulen" <hulens61@birch.net> > > > > > The other one is Poly-Zap. There was > > > a thread on this list several years ago about > > Poly-Zap which you may find > > > helpful. > > > Bill > > > > ++ I can offer some information on this as I have > > given clinics on "instant > > glues" and have used more of the stuff than you can > > ever imagine. One of my > > friends said he wouldn't be surprised if I built a > > house some day with the > > stuff! Reading from the label on the container, it > > says, "For specialty > > plastics" "Ideal for Lexan repairs", "Strong and > > flexible", etc. etc. Poly > > Zap (a special version of super glue for "slick" > > plastics) sure made the job > > easy for me when I secured the rubber seals to the > > canopy. After I had the > > rubber in place and satisfied with the fit, I just > > went along the rubber > > strip about every 8", lifted the rubber up far > > enough to squeeze a small > > drop of the Poly Zap down in the bottom of the slot, > > then held the rubber > > down in place for about 15 seconds or so until the > > Zap had "gone off" > > (bonding by a rapid chemical reaction, not drying), > > then went to the next > > spot 8" away. After I had these spots "tacked" I > > went in between each of > > those with more spots. No need to use the stuff in > > a continuous amount all > > the way around. After I had the rubber spotted in > > along the outside, I > > lifted the canopy and did a few on the inside (not > > vary many though). It > > doesn't take much to completely secure the rubber > > seal. Don't put enough in > > there that it pushes out and shows when you press > > the rubber down while it > > sets. Using this method, you won't be trying to put > > some sort of glue along > > the whole thing and struggling to hold the whole > > thing in place at the same > > time. I did some test applications on some of the > > scrap pieces that I had > > cut off while fitting the canopy and you'll rip the > > surface off the rubber > > before it will come loose from the canopy. > > > > There are about 8 different types of Zap instant > > glues made by Pacer > > Products (thin, thick, slow, gel, oderless, for > > nylon and delrin, etc.). > > Poly Zap is not commonly used for normal wood and > > plastic model building and > > thus not regularly stocked by most hobby shops. If > > you can't find it in > > stock, wait for them to order it for you. My advice > > is....... Use ONLY POLY > > ZAP. DO NOT use the other ZAP brand instant glue > > types as they are not > > designed for long term bonding to slick acrylic > > plastics. The will become > > brittle and will break loose with time and flexing. > > > > Here's a valuable tip. Poly Zap tends to harden in > > the container sooner > > than other "instant glues". It's life can be > > extended much longer if you > > store it in the refrigerator between uses. Let it > > come up to room > > temperature before using it again. > > > > Fred Hulen > > Jabiru 3300, 601HDS 50.5 hours > > > > > > > > Contributions > > any other > > Forums. > > > > latest messages. > > List members. > > > > http://www.matronics.com/subscription > > http://www.matronics.com/FAQ/Zenith-List.htm > > Digests:http://www.matronics.com/digest/zenith-list > > http://www.matronics.com/archives > > http://www.matronics.com/photoshare > > http://www.matronics.com/emaillists > > > > > > > > > > > > ===== > ---------------------------- > Michel Therrien CH601-HD > http://mthobby.pcperfect.com/ch601 > http://www.zenithair.com/bldrlist/profiles/mthobby > http://pages.infinit.net/mthobby > > __________________________________ >


    Message 29


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    Time: 07:11:59 PM PST US
    From: Tim & Diane Shankland <tshank@megsinet.net>
    Subject: Re: XL Canopy Lock
    --> Zenith-List message posted by: Tim & Diane Shankland <tshank@megsinet.net> Michel, Something you might want to think about. I too added a locking mechanism to my canopy but I didn't use the Zenith parts. My concern is if you forget and leave the lock locked after you open the canopy and then close it you can't open it from the inside with the handle. Tim Shankland Michel Therrien wrote: >--> Zenith-List message posted by: Michel Therrien <mtherr@yahoo.com> > >Hi Gang, > >Some of you may remember a thread I started a while >ago asking how to integrate a locking mechanism with >the XL style of canopy installation. > >Well, here it is, I did that earlier today. > >Those of you who are interested can see this on my web >site. Follow the link to the canopy section under >"New" and select Part IV. > >Michel >http://mthobby.pcperfect.com/ch601 >do not archive > > >===== >---------------------------- >Michel Therrien CH601-HD > http://mthobby.pcperfect.com/ch601 > http://www.zenithair.com/bldrlist/profiles/mthobby > http://pages.infinit.net/mthobby > >__________________________________ > > > >


    Message 30


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    Time: 09:40:37 PM PST US
    From: "Jeff Paden" <jeffpaden@madbbs.com>
    Subject: Re: Aileron flutter
    --> Zenith-List message posted by: "Jeff Paden" <jeffpaden@madbbs.com> OK, maybe flutter was the wrong word to use here... it was the best way that I knew to describe the problem. =0D =0D It can not be as bad as everyone is saying or I would have been dead long ago since I flew a 10 hour flight with the ailerons "fluttering" the entire flight. By flutter I mean that the ailerons wiggle up and down slightly but quickly. I can feel it on the control stick when it is bad enough and then I slow to about 130 mph indicated airspeed. Maybe I should take a short video of the problem and post it on our web site. That seems to be the best way to let everyone see what I am talking about.=0D =0D Jeff Paden=0D =0D =0D -------Original Message-------=0D =0D From: zenith-list@matronics.com=0D Subject: Re: Zenith-List: Aileron flutter required 5, MAILTO_TO_SPAM_ADDR, QUOTED_EMAIL_TEXT,=0D =0D --> Zenith-List message posted by: "George Swinford" <grs-pms@comcast.net>=0D =0D The real danger from flutter isn't fatigue failure. Flutter can cause gross=0D structural failure in just a few cycles, literally in a fraction of a=0D second. I recall seeing an in-cockpit flight test movie of a flutter test on=0D a modified Piper twin in which the time between the deliberate pulse of the=0D yoke and disintegration of the airplane was only a few frames. The=0D professional test pilot escaped by parachute and later showed the film to=0D our EAA chapter.=0D =0D George Swinford Do not archive=0D --- Original Message -----=0D From: "eldo" <eldo@unb.ca>=0D Subject: RE: Zenith-List: Aileron flutter required 5, MAILTO_TO_SPAM_ADDR,=0D QUOTED_EMAIL_TEXT,=0D =0D =0D > --> Zenith-List message posted by: eldo <eldo@unb.ca>=0D >=0D > One other minor point on the fatigue issue. The CH300 uses an actual=0D hinge=0D > not the bending skin hinge Chris designed for the 601. Fatigue would not=0D be=0D > the same issue with an actual hinge.=0D >=0D > Eldo H.=0D >=0D >=0D > > Original Message From "Fred or Sandy Hulen" <hulens61@birch.net>=0D =0D > >--> Zenith-List message posted by: "Fred or Sandy Hulen"=0D <hulens61@birch.net>=0D > >=0D > >A 10 cycle=0D > >> per second flutter would a 10,000 cycle life to 1000 seconds of=0D operation=0D > >> which is just under 16 minutes and 40 seconds of flight time...=0D > >>=0D > >=0D > > ++ I'm curious where you got the numbers. When I talked to Chris Heintz=0D at=0D > >Oshkosh he described the testing that had been done on these and it was a=0D > >far longer time and cycle period.=0D > >=0D > >Fred=0D > >=0D > >do not archive=0D > >=0D > >=0D >=0D > Eldo Hildebrand=0D > Assistant Dean of Engineering=0D > University of New Brunswick=0D > P.O. Box 4400=0D > Fredericton, NB=0D > E3B 5A3=0D >=0D >=0D =0D =0D =0D =0D =0D =0D =2E


    Message 31


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    Time: 09:56:49 PM PST US
    From: Michel Therrien <mtherr@yahoo.com>
    Subject: Re: XL Canopy Lock
    --> Zenith-List message posted by: Michel Therrien <mtherr@yahoo.com> Yes, that's a very real possibility. However, I should be able to open it easilly from inside using the two slots that provide direct access to the latch levers. (using a key or any pointed device). --- Tim & Diane Shankland <tshank@megsinet.net> wrote: > --> Zenith-List message posted by: Tim & Diane > Shankland <tshank@megsinet.net> > > Michel, > Something you might want to think about. I too added > a locking mechanism > to my canopy but I didn't use the Zenith parts. My > concern is if you > forget and leave the lock locked after you open the > canopy and then > close it you can't open it from the inside with the > handle. > > Tim Shankland > > Michel Therrien wrote: > > >--> Zenith-List message posted by: Michel Therrien > <mtherr@yahoo.com> > > > >Hi Gang, > > > >Some of you may remember a thread I started a while > >ago asking how to integrate a locking mechanism > with > >the XL style of canopy installation. > > > >Well, here it is, I did that earlier today. > > > >Those of you who are interested can see this on my > web > >site. Follow the link to the canopy section under > >"New" and select Part IV. > > > >Michel > >http://mthobby.pcperfect.com/ch601 > >do not archive > > > > > >===== > >---------------------------- > >Michel Therrien CH601-HD > > http://mthobby.pcperfect.com/ch601 > > > http://www.zenithair.com/bldrlist/profiles/mthobby > > http://pages.infinit.net/mthobby > > > >__________________________________ > > > > > > > > > > > > Contributions > any other > Forums. > > latest messages. > List members. > > http://www.matronics.com/subscription > http://www.matronics.com/FAQ/Zenith-List.htm > Digests:http://www.matronics.com/digest/zenith-list > http://www.matronics.com/archives > http://www.matronics.com/photoshare > http://www.matronics.com/emaillists > > > > > ===== ---------------------------- Michel Therrien CH601-HD http://mthobby.pcperfect.com/ch601 http://www.zenithair.com/bldrlist/profiles/mthobby http://pages.infinit.net/mthobby __________________________________


    Message 32


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    Time: 09:58:21 PM PST US
    From: "n282rs" <n282rs@sbcglobal.net>
    Subject: Re: Aileron flutter
    --> Zenith-List message posted by: "n282rs" <n282rs@sbcglobal.net> Jeff I'm no expert and I make no claims of being one, but that still sounds like flutter to me. I would hope that you would call ZAC before flying again. I really don't want to read about you in the news. Randy n282rs@sbcglobal.net ----- Original Message ----- From: "Jeff Paden" <jeffpaden@madbbs.com> Subject: Re: Zenith-List: Aileron flutter > --> Zenith-List message posted by: "Jeff Paden" <jeffpaden@madbbs.com> > > OK, maybe flutter was the wrong word to use here... it was the best way that > I knew to describe the problem. =0D > =0D > It can not be as bad as everyone is saying or I would have been dead long > ago since I flew a 10 hour flight with the ailerons "fluttering" the entire > flight. By flutter I mean that the ailerons wiggle up and down slightly but > quickly. I can feel it on the control stick when it is bad enough and then > I slow to about 130 mph indicated airspeed. Maybe I should take a short > video of the problem and post it on our web site. That seems to be the best > way to let everyone see what I am talking about.=0D > =0D > Jeff Paden=0D > =0D > =0D > -------Original Message-------=0D > =0D > From: zenith-list@matronics.com=0D > Date: Saturday, July 05, 2003 04:26:16 PM=0D > To: zenith-list@matronics.com=0D > Subject: Re: Zenith-List: Aileron flutter required 5, MAILTO_TO_SPAM_ADDR, > QUOTED_EMAIL_TEXT,=0D > =0D > --> Zenith-List message posted by: "George Swinford" <grs-pms@comcast.net>=0D > =0D > The real danger from flutter isn't fatigue failure. Flutter can cause gross=0D > structural failure in just a few cycles, literally in a fraction of a=0D > second. I recall seeing an in-cockpit flight test movie of a flutter test on=0D > a modified Piper twin in which the time between the deliberate pulse of the=0D > yoke and disintegration of the airplane was only a few frames. The=0D > professional test pilot escaped by parachute and later showed the film to=0D > our EAA chapter.=0D > =0D > George Swinford Do not archive=0D > --- Original Message -----=0D > From: "eldo" <eldo@unb.ca>=0D > To: <zenith-list@matronics.com>=0D > Subject: RE: Zenith-List: Aileron flutter required 5, MAILTO_TO_SPAM_ADDR,=0D > QUOTED_EMAIL_TEXT,=0D > =0D > =0D > > --> Zenith-List message posted by: eldo <eldo@unb.ca>=0D > >=0D > > One other minor point on the fatigue issue. The CH300 uses an actual=0D > hinge=0D > > not the bending skin hinge Chris designed for the 601. Fatigue would not=0D > be=0D > > the same issue with an actual hinge.=0D > >=0D > > Eldo H.=0D > >=0D > >=0D > > > Original Message From "Fred or Sandy Hulen" <hulens61@birch.net>=0D > =0D > > >--> Zenith-List message posted by: "Fred or Sandy Hulen"=0D > <hulens61@birch.net>=0D > > >=0D > > >A 10 cycle=0D > > >> per second flutter would a 10,000 cycle life to 1000 seconds of=0D > operation=0D > > >> which is just under 16 minutes and 40 seconds of flight time...=0D > > >>=0D > > >=0D > > > ++ I'm curious where you got the numbers. When I talked to Chris Heintz=0D > at=0D > > >Oshkosh he described the testing that had been done on these and it was a=0D > > >far longer time and cycle period.=0D > > >=0D > > >Fred=0D > > >=0D > > >do not archive=0D > > >=0D > > >=0D > >=0D > > Eldo Hildebrand=0D > > Assistant Dean of Engineering=0D > > University of New Brunswick=0D > > P.O. Box 4400=0D > > Fredericton, NB=0D > > E3B 5A3=0D > >=0D > >=0D > =0D > =0D > =0D > =0D > =0D > =0D > =2E > >


    Message 33


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    Time: 11:12:39 PM PST US
    From: "Phil & Michele Miller" <millerpg@ps.gen.nz>
    Subject: Aileron flutter
    --> Zenith-List message posted by: "Phil & Michele Miller" <millerpg@ps.gen.nz> Jeff, For God's sake listen to what you are being told here. If you want more information, try this link http://members.eaa.org/home/homebuilders/authors/bingelis/ Scroll down a wee way and read the two articles, "Control Surface Balancing in Homebuilts" and "Control Surface Flutter Problems". Cheers, Phil Miller New Zealand -----Original Message----- From: owner-zenith-list-server@matronics.com [mailto:owner-zenith-list-server@matronics.com] On Behalf Of Jeff Paden Subject: Re: Zenith-List: Aileron flutter --> Zenith-List message posted by: "Jeff Paden" <jeffpaden@madbbs.com> OK, maybe flutter was the wrong word to use here... it was the best way that I knew to describe the problem. =0D =0D It can not be as bad as everyone is saying or I would have been dead long ago since I flew a 10 hour flight with the ailerons "fluttering" the entire flight. By flutter I mean that the ailerons wiggle up and down slightly but quickly.




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