Kolb-List Digest Archive

Wed 06/01/05


Total Messages Posted: 16



Today's Message Index:
----------------------
 
     1. 01:57 AM - Re: vortex generators (David L. Bigelow)
     2. 03:02 AM - Predicted death (Scott Perkins)
     3. 05:27 AM - Re: stabilizer incidence (James, Ken)
     4. 05:33 AM - Re: kendale bearings (Beauford)
     5. 07:13 AM - Re: Predicted death (dama)
     6. 07:46 AM - Re: stabilizer incidence (possums)
     7. 08:03 AM - Re: stabilizer incidence (possums)
     8. 08:21 AM - Re: Predicted death (ray anderson)
     9. 09:11 AM - Re: Firestar Spiral Instability (William George)
    10. 12:24 PM - Re: stabilizer incidence (Silver Fern Microlights Ltd)
    11. 02:55 PM - Re: Firestar Spiral Instability (Richard Swiderwski)
    12. 03:12 PM - Re: Thrust Angle Relative To Wing (Richard Swiderwski)
    13. 03:13 PM - Re: Predicted death (N27SB@aol.com)
    14. 04:26 PM - Re: stabilizer incidence (Jim Ballenger)
    15. 09:44 PM - Re: Predicted Death (WADE LAWICKI)
    16. 11:51 PM - Official Usage Guideline [Please Read] [Monthly Posting] (dralle@matronics.com)
 
 
 


Message 1


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    Time: 01:57:32 AM PST US
    From: "David L. Bigelow" <dlbigelow@verizon.net>
    Subject: Re: vortex generators
    --> Kolb-List message posted by: "David L. Bigelow" <dlbigelow@verizon.net> They are vortex generators. The minimum equipment list for virtually all jet transports allow a certain number of VG's to be missing on a given side. I think having more than several missing can effect the control. You are supposed to check them during pre-flight. The captain should have known that! "After all the discussions of VG's here on the list i was looking at the heavy iron. The Boeing i was on had what looked like VG's on the wing inboard of the engine nacelle I asked the Capt if they were indeed VG's and he wasn't sure... Any big iron drivers out there?? were they VG's or just "stuff" on the wing" I installed 46 of the Harrison Design (landshorter.com) on each of my Firestar 2's wings, at just about the same distance from the LE and with similar spacing. Stall speed went from 35 mph indicated to 30 mph indicated with nicer handling right up to the stall. Also, there is a bit more float during roundout, and less tendency to drop hard on the gear if you don't get things right. It does take a bit more power (100-200 rpm) to hold a cruise of 55-60 mph than without the VG's. I'm sold, and will leave them on. Dave Bigelow FS II, 503 DCDI Kamuela, Hawaii


    Message 2


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    Time: 03:02:38 AM PST US
    From: Scott Perkins <2scott@bellsouth.net>
    Subject: Predicted death
    --> Kolb-List message posted by: Scott Perkins <2scott@bellsouth.net> I was at the Fly-in on Sat talking with the owner of a nice looking Yellow Firestar who was a member of the MTUG group I think and also definitely knew a lot about welding.... in fact I think said he worked as a welder. ( always remember everything except the name ? ? ? ...... ) Anyway, he pointed out the ultrastar as a basket case and said he cited the numerous bad joints, cracked welds, and obvious kludge repair job on the landing gear that had been broken and had had splints applied with radiator clamps to the owner. He said he suggested to the owner to take a cab home and declared to me that guys like him give ultralights in general a black eye. Now a few days later I hear of the very same plane going down with structural failure. Too too bad. Doo doo happens if you let it. It was an attractive plane from a distance but this guy's attitude is what killed him, not the rust. For whoever has inspected the wreckage, it would be useful to know the exact details of what failed and how. Thanks, Scott /////////////////////////////////////////////////////////// From: ray anderson <rsanoa@yahoo.com> Subject: Kolb-List: Kolb fatal crash I don't have all the details of the incident yet but I'll get them and post here. Preliminary data indicates the Kolb had been recently purchased from someone in Chattanooga, TN by a Mr. Primm who had cleaned it up, added a nose cone and painted everything. He failed to see a rusted out area somewhere on a wing strut and that is where it failed. He deployed a ballistic chute but was too low for it to function. These are the facts I know at the moment. When I get more I will add them. I was at the flyin on Saturday and inspected the UltraStar, thought it looked good and waited around for quite awhile to talk to the owner since I have an UltraStar, but had to leave before he showed up. Hidden rust can sure ruin your day.


    Message 3


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    Time: 05:27:00 AM PST US
    From: "James, Ken" <KDJames@berkscareer.com>
    Subject: stabilizer incidence
    --> Kolb-List message posted by: "James, Ken" <KDJames@berkscareer.com> Can any of you MK III X guys take photos of your Horz Stab attachment point, I have all the parts made, and I'm at the point of drilling. I would like to see some typical mounts that are flying. Thanks Ken James Drafting Design Technology Instructor Berks Career and Technology Center East Campus 3307 Friedensburg Rd. Oley, Pa. 19506 610-987-6201 Ext. 3532 Kdjames@berkscareer.com -----Original Message----- From: Jim Ballenger [mailto:ulpilot@cavtel.net] Subject: Re: Kolb-List: stabilizer incidence --> Kolb-List message posted by: "Jim Ballenger" <ulpilot@cavtel.net> Rex I ended up with the top of the stabilizer leading edge slightly higher than the boom tube. I left the original bracket on the tube and mounted the 4 hole adjustable bracket directly above it. I am extremely satisfied with the results. If you use the modified bracket by itself, make sure the top hole will allow the top of the stabilizer leading edge to be slightly above the boom tube. Jim ----- Original Message ----- From: "Rex Rodebush" <rrodebush@tema.net> Subject: Kolb-List: stabilizer incidence > --> Kolb-List message posted by: "Rex Rodebush" <rrodebush@tema.net> > > Jim, > > I also bought the adjustable brackets a few years ago because Kolb keep > changing the recommended location of the stabilizer. It changed from > about the middle of the fuselage tube to towards the top and then maybe > back again. > > Where did you finally position it with respect to the top of the tube? > > Congratulations on your first flight! > > Thanks, > > Rex Rodebush > Building a Mark III Xtra > > > Time: 02:09:48 PM PST US > From: "Jim Ballenger" <ulpilot@cavtel.net> > Subject: Kolb-List: MK III X N46319 TEST FLIGHTS > > --> Kolb-List message posted by: "Jim Ballenger" <ulpilot@cavtel.net> > > All > > This is a little late but my MK III X received it airworthiness > certificate on > 7 May and I flew it's first flight on 14 May. The horizontal stabilizer > incidence > was way off, I had to hold stick forward as far as I could stretch my > arms. > After researching the archives and reading Guy Swenson's comments on the > HZ > stab incidence and talking to Bill Futrell, I had TNK send me one of the > adjustable > brackets(thanks Donny,Travis and Denny). I brought the LE up 2 5/8" > and it solved the problem. > >


    Message 4


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    Time: 05:33:34 AM PST US
    From: "Beauford" <beauford@tampabay.rr.com>
    Subject: Re: kendale bearings
    --> Kolb-List message posted by: "Beauford" <beauford@tampabay.rr.com> Ed... Not familiar with Kendale bearings... new name to me. The conventional wisdom is to idle the 447 (and I believe all of the 2-stroke Rotaxes without clutches) at the lowest speed you can get it to run smoothly without experiencing any "chatter" in the gearbox... on the one I fool with, I have found that proper fine-tuning of the idle air adjustment screw is critical to getting it to behave properly. Mine will run smoothly down to about 2350 on most days... 2400 on others. As you know, you should make sure you get it up to full operating temp before you try to adjust it. Worth what ye paid fer it... good luck. Beauford FF #076 Brandon FL ----- Original Message ----- From: <DAquaNut@aol.com> Subject: Re: Kolb-List: kendale bearings > --> Kolb-List message posted by: DAquaNut@aol.com > > Group, > > I have found some 1 3/8 X 3/4 bearings at Northern Tools. They have > Kendale > Ind. stamped on them. Are these any better than the Chineese bearings ? > Also , what Idle speed is best for the 447 Rotax? > > Ed (in Hou.) > > >


    Message 5


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    Time: 07:13:07 AM PST US
    From: "dama" <dama@mindspring.com>
    Subject: Re: Predicted death
    --> Kolb-List message posted by: "dama" <dama@mindspring.com> Thanks for the additional info, Scott... Kip http://www.springeraviation.net/ do not archive ----- Original Message ----- From: "Scott Perkins" <2scott@bellsouth.net> Subject: Kolb-List: Predicted death > --> Kolb-List message posted by: Scott Perkins <2scott@bellsouth.net> > > > I was at the Fly-in on Sat talking with the owner of a nice looking Yellow > Firestar who was a member of the MTUG group I think and also definitely knew > a lot about welding.... in fact I think said he worked as a welder. > ( always remember everything except the name ? ? ? ...... ) > > Anyway, he pointed out the ultrastar as a basket case and said he cited the numerous > bad joints, cracked welds, and obvious kludge repair job on the landing gear > that had been broken and had had splints applied with radiator clamps to > the owner. > He said he suggested to the owner to take a cab home and declared to me that > guys like him give ultralights in general a black eye. > > Now a few days later I hear of the very same plane going down with > structural failure. Too too bad. Doo doo happens if you let it. > > It was an attractive plane from a distance but this guy's attitude > is what killed him, not the rust. > > For whoever has inspected the wreckage, it would be useful to know the > exact details of what failed and how. > > Thanks, > > Scott > > > /////////////////////////////////////////////////////////// > From: ray anderson <rsanoa@yahoo.com> > Subject: Kolb-List: Kolb fatal crash > > I don't have all > the details of the incident yet but I'll get them and post here. Preliminary > data indicates the Kolb had been recently purchased from someone in Chattanooga, > TN by a Mr. Primm who had cleaned it up, added a nose cone and painted everything. > He failed to see a rusted out area somewhere on a wing strut and that > is where it failed. He deployed a ballistic chute but was too low for it to > function. These are the facts I know at the moment. When I get more I will add > them. > I was at the flyin on Saturday and inspected the UltraStar, thought it > looked good and waited around for quite awhile to talk to the owner since I > have an UltraStar, but had to leave before he showed up. > Hidden rust can sure ruin your day. > >


    Message 6


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    Time: 07:46:15 AM PST US
    From: possums <possums@mindspring.com>
    Subject: stabilizer incidence
    --> Kolb-List message posted by: possums <possums@mindspring.com> At 08:23 AM 6/1/2005, you wrote: >--> Kolb-List message posted by: "James, Ken" <KDJames@berkscareer.com> > >Can any of you MK III X guys take photos of your Horz Stab attachment point, >I have all the parts made, and I'm at the point of drilling. I would like to >see some typical mounts that are flying. > >Thanks Ken James Here's some made of steel - works better if you click on "view the slideshow" Not a MKIII but same idea.


    Message 7


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    Time: 08:03:59 AM PST US
    From: possums <possums@mindspring.com>
    Subject: stabilizer incidence
    --> Kolb-List message posted by: possums <possums@mindspring.com> At 08:23 AM 6/1/2005, you wrote: >--> Kolb-List message posted by: "James, Ken" <KDJames@berkscareer.com> > >Can any of you MK III X guys take photos of your Horz Stab attachment point, >I have all the parts made, and I'm at the point of drilling. I would like to >see some typical mounts that are flying. > >Thanks Ken James Works even better if I attach the URL link. http://sos.photosite.com/Album2/


    Message 8


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    Time: 08:21:17 AM PST US
    From: ray anderson <rsanoa@yahoo.com>
    Subject: Re: Predicted death
    --> Kolb-List message posted by: ray anderson <rsanoa@yahoo.com> All, I checked with the folks at Tullahoma airport and they thought the wreckage had been removed back to Chattanooga. I wanted to look at it because there has been some confusion about the point of failure and where it was. A point of interest is that the pilot never pulled the activating handle of the chute. It was found remaining in it's holder. Unfortunately, he couldn't have actuated it. He had failed to remove the safety pin that restrained the activating handle !! The line connecting it to the rocket apparently stretched when the wing folded and pulled the pin, activating it. Too low to save. He might have survived if he had been able to pull quickly when the failure occurred. Another reason to always preflight, preferably with a check list, and train one's self in how to react quickly in emergencies. dama <dama@mindspring.com> wrote: --> Kolb-List message posted by: "dama" Thanks for the additional info, Scott... Kip http://www.springeraviation.net/ do not archive ----- Original Message ----- From: "Scott Perkins" <2scott@bellsouth.net> Subject: Kolb-List: Predicted death > --> Kolb-List message posted by: Scott Perkins <2scott@bellsouth.net> > > > I was at the Fly-in on Sat talking with the owner of a nice looking Yellow > Firestar who was a member of the MTUG group I think and also definitely knew > a lot about welding.... in fact I think said he worked as a welder. > ( always remember everything except the name ? ? ? ...... ) > > Anyway, he pointed out the ultrastar as a basket case and said he cited the numerous > bad joints, cracked welds, and obvious kludge repair job on the landing gear > that had been broken and had had splints applied with radiator clamps to > the owner. > He said he suggested to the owner to take a cab home and declared to me that > guys like him give ultralights in general a black eye. > > Now a few days later I hear of the very same plane going down with > structural failure. Too too bad. Doo doo happens if you let it. > > It was an attractive plane from a distance but this guy's attitude > is what killed him, not the rust. > > For whoever has inspected the wreckage, it would be useful to know the > exact details of what failed and how. > > Thanks, > > Scott > > > /////////////////////////////////////////////////////////// > From: ray anderson > Subject: Kolb-List: Kolb fatal crash > > I don't have all > the details of the incident yet but I'll get them and post here. Preliminary > data indicates the Kolb had been recently purchased from someone in Chattanooga, > TN by a Mr. Primm who had cleaned it up, added a nose cone and painted everything. > He failed to see a rusted out area somewhere on a wing strut and that > is where it failed. He deployed a ballistic chute but was too low for it to > function. These are the facts I know at the moment. When I get more I will add > them. > I was at the flyin on Saturday and inspected the UltraStar, thought it > looked good and waited around for quite awhile to talk to the owner since I > have an UltraStar, but had to leave before he showed up. > Hidden rust can sure ruin your day. > > --------------------------------- Stay in touch with email, IM, photo sharing & more. Check it out!


    Message 9


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    Time: 09:11:14 AM PST US
    From: William George <wgeorge@mountainmeadowranch.com>
    Subject: Re: Firestar Spiral Instability
    --> Kolb-List message posted by: William George <wgeorge@mountainmeadowranch.com> Well put David. do no archive Bill George Hawaii Kolb Mk-3 Verner 1400 Powerfin On May 31, 2005, at 8:56 PM, Kolb-List Digest Server wrote: > Time: 02:44:23 AM PST US > From: "David L. Bigelow" <dlbigelow@verizon.net> > Subject: Kolb-List: Re: Firestar Spiral Instability > > --> Kolb-List message posted by: "David L. Bigelow" > <dlbigelow@verizon.net> > > > Aircraft responsiveness and stability are not mutually exclusive. The > very best > flying aircraft have both. You can build some stability into a Kolb > without > destroying it's responsiveness. You won't make it into a Cessna 150 > by tuning > out an undesirable flying characteristic like spiral instability. > It's like > driving a sports car with the suspension toe in and camber set wrong. > It's twitchy > and bothersome to drive like that, but of course, if you drive it that > way long enough, you get used to it. Set the toe in and camber > correctly, and > you still have a responsive great handling machine. It's just easier > and less > fatiguing to drive. > > Some of the military fighters I've flown have a roll rate fast enough > to bang your > head against the side of the canopy if you give them hard aileron, yet > they > all trim hands off. There are some aircraft that pilots universally > love because > of the way they handle. They have that almost indefinable something - > a > combination of responsiveness and stability that makes them a joy to > fly. Two > that come to mind for me are the Schweizer 1-26 sailplane, and believe > it or > not, the DC-10. The DC-10, big and heavy as it is, has "right now" > control response > with very little effort, and is also very stable. I notice a lot of > similarity > to the 1-26 with my Firestar, especially now with the spiral > instability > gone.


    Message 10


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    Time: 12:24:34 PM PST US
    From: "Silver Fern Microlights Ltd" <kiwimick@sfmicro.fsnet.co.uk>
    Subject: Re: stabilizer incidence
    --> Kolb-List message posted by: "Silver Fern Microlights Ltd" <kiwimick@sfmicro.fsnet.co.uk> Ken, All. Here in the UK we allign the horiz stab as per the blue prints and it works just fine. Initially on the Classic when CAA approval was being gained it was established by the test pilot that when the top of the stab was mounted level with the top of the boom tube there was little pitch stability when the a/c was in a dive, (this is known as divergence) and pre stall warning was almost non existant. The cure was to lower the L/E of the stab, and on the Xtra it has been lowered even further. For the UK approval we had to conduct a formal and demanding flight test program and no problems were found when the stab was fitted as per drawings. Your problem may well lay with an out of CG aircraft (tail heavy) or the trim system incorrectly adjusted. Mike Xtra/Jab 2200 G-CDFA ----- Original Message ----- From: "James, Ken" <KDJames@berkscareer.com> Subject: RE: Kolb-List: stabilizer incidence > --> Kolb-List message posted by: "James, Ken" <KDJames@berkscareer.com> > > Can any of you MK III X guys take photos of your Horz Stab attachment > point, > I have all the parts made, and I'm at the point of drilling. I would like > to > see some typical mounts that are flying. > > Thanks Ken James > Drafting Design Technology Instructor > > Berks Career and Technology Center > East Campus > 3307 Friedensburg Rd. > Oley, Pa. 19506 > 610-987-6201 Ext. 3532 > > Kdjames@berkscareer.com > > > -----Original Message----- > From: Jim Ballenger [mailto:ulpilot@cavtel.net] > To: kolb-list@matronics.com > Subject: Re: Kolb-List: stabilizer incidence > > > --> Kolb-List message posted by: "Jim Ballenger" <ulpilot@cavtel.net> > > Rex > I ended up with the top of the stabilizer leading edge slightly higher > than > the boom tube. I left the original bracket on the tube and mounted the 4 > hole adjustable bracket directly above it. I am extremely satisfied with > the results. If you use the modified bracket by itself, make sure the top > hole will allow the top of the stabilizer leading edge to be slightly > above > the boom tube. > Jim > ----- Original Message ----- > From: "Rex Rodebush" <rrodebush@tema.net> > To: <kolb-list@matronics.com> > Subject: Kolb-List: stabilizer incidence > > >> --> Kolb-List message posted by: "Rex Rodebush" <rrodebush@tema.net> >> >> Jim, >> >> I also bought the adjustable brackets a few years ago because Kolb keep >> changing the recommended location of the stabilizer. It changed from >> about the middle of the fuselage tube to towards the top and then maybe >> back again. >> >> Where did you finally position it with respect to the top of the tube? >> >> Congratulations on your first flight! >> >> Thanks, >> >> Rex Rodebush >> Building a Mark III Xtra >> >> >> Time: 02:09:48 PM PST US >> From: "Jim Ballenger" <ulpilot@cavtel.net> >> Subject: Kolb-List: MK III X N46319 TEST FLIGHTS >> >> --> Kolb-List message posted by: "Jim Ballenger" <ulpilot@cavtel.net> >> >> All >> >> This is a little late but my MK III X received it airworthiness >> certificate on >> 7 May and I flew it's first flight on 14 May. The horizontal stabilizer >> incidence >> was way off, I had to hold stick forward as far as I could stretch my >> arms. >> After researching the archives and reading Guy Swenson's comments on the >> HZ >> stab incidence and talking to Bill Futrell, I had TNK send me one of the >> adjustable >> brackets(thanks Donny,Travis and Denny). I brought the LE up 2 5/8" >> and it solved the problem. >> >> > > >


    Message 11


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    Time: 02:55:35 PM PST US
    From: "Richard Swiderwski" <rswiderski@earthlink.net>
    Subject: Firestar Spiral Instability
    --> Kolb-List message posted by: "Richard Swiderwski" <rswiderski@earthlink.net> Richard, Steve & All, Everything is a trade off. Maneuverability & stability are at odds with each other. Where you want to be on that continuum is a personal choice. But if you add dihedral to a Kolb, you will compromise some of its maneuverability, cross wind landing will be among the compromised. Richard Swiderski -----Original Message----- From: owner-kolb-list-server@matronics.com [mailto:owner-kolb-list-server@matronics.com] On Behalf Of Richard Pike Subject: Re: Kolb-List: Firestar Spiral Instability --> Kolb-List message posted by: Richard Pike <richard@bcchapel.org> No the Firestar actually flies very sweet, Ed took it to a local strip yesterday and let a local airplane maven fly it (This particular guy is an A & P, IA, ATP, Corporate Pilot, and owns TEN homebuilt/ultralight aircraft!!!) and his response was that it was delightful, and he wants one. And he said it was much more responsive than the current Hawk Classic. It will fly hands off very well, but as long as you give it a good dose of rudder, it turns as nicely as you could ask. Maybe if I ever get off my inertia, I might try adding some more dihedral to the MKIII. On the other hand, I don't care that it is unstable, but I guess that stability is a good thing. I like the MKIII as is, but I suppose I would like it better if it would fly hands off and still be as agile as it is now - why not? Richard Pike MKIII N420P (420ldPoops) At 05:54 PM 5/31/2005 -0700, you wrote: >--> Kolb-List message posted by: Steve Kroll <muso2080@yahoo.com> > ><<<<I asked him about stability in a MKIII. > He told me there wasn't any. > He was right.>>>>> > >Richard, > >The same is true for my Mk2 (lacking in spiral stability) and that >instability is compounded many times by the torque factor. I considered >more dihedral also but it seems to me that adding dihedral might lower the >effectiveness of the ailerons and rudder. Did you find that to be the >case with either your FS2 or the Mk3 ? I shoot lots of pictures out of my >bird so when I'm using the camera, I simply fly left handed. > >Steve Kroll > >


    Message 12


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    Time: 03:12:41 PM PST US
    From: "Richard Swiderwski" <rswiderski@earthlink.net>
    Subject: : Kolb-List:Thrust Angle Relative To Wing
    --> Kolb-List message posted by: "Richard Swiderwski" <rswiderski@earthlink.net> Rusty, I was going through some old notes & ran across a comment from Dennis Sounder that I wrote down regarding how to rig the thrust line angle on the SlingShot. He said with the wings at 5 degrees incidence, the thrust line should be horizontal. My wings are off & so is my engine. How does that compare to raising the rear mounts 3/4" as was suggested earlier? I will need to nail this issue down myself, so if you or other SS owners have any input it would be appreciated. Also, I have heard that the fuselage tube is horizontal in level flight on the SS. Can anyone else confirm this? Lastly, if anyone is measuring the SS's angles of incidence, could you check what the difference is between the wing & the fuselage tube? Thanks. Richard Swiderski


    Message 13


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    Time: 03:13:25 PM PST US
    From: N27SB@aol.com
    Subject: Re: Predicted death
    --> Kolb-List message posted by: N27SB@aol.com In a message dated 6/1/2005 3:16:05 PM Eastern Standard Time, rsanoa@yahoo.com writes: > Unfortunately, he couldn't have actuated it. He had failed to remove > the safety pin that restrained the activating handle !! On my Firefly I used a marine style ignition kill switch. I attach the igniton clip to the BRS remove before flight flag. You have to remove the safety pin on the BRS in order to activate the ignition. When you pull the clip after you flight you have to put it somewhere so you may as well put it back on the BRS. At any time you are fooling with the prop you can always look at the BRS handle and confirm that your ignition is not hot. Steve Boetto FF #007


    Message 14


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    Time: 04:26:33 PM PST US
    From: "Jim Ballenger" <ulpilot@cavtel.net>
    Subject: Re: stabilizer incidence
    --> Kolb-List message posted by: "Jim Ballenger" <ulpilot@cavtel.net> Mike I conducted a W&B and it proved the airplane was within the factory specs as far as CG was concerned. I consulted with the factory and an aeronautical engineer prior to my raising the leading edge of the stab and both concured with the move. I have stalled the plane and recovery was straight forward and acted just like my Firestar KXP. I also looked at the FS, FF and MK III Classic and their stabs are mounted with the Stab LE raised. I can not explain why some MK III X planes fly with the Stab as the plans dictate and others don't but I do know mine flies very good now that I have moved the Stab. You do raise an interesting question about the pitch stability in a dive. Why would it be different than straight and level? Jim ----- Original Message ----- From: "Silver Fern Microlights Ltd" <kiwimick@sfmicro.fsnet.co.uk> Subject: Re: Kolb-List: stabilizer incidence > --> Kolb-List message posted by: "Silver Fern Microlights Ltd" <kiwimick@sfmicro.fsnet.co.uk> > > Ken, All. > Here in the UK we allign the horiz stab as per the blue prints and it works > just fine. > Initially on the Classic when CAA approval was being gained it was > established by the test pilot that when the top of the stab was mounted > level with the top of the boom tube there was little pitch stability when > the a/c was in a dive, (this is known as divergence) and pre stall warning > was almost non existant. > The cure was to lower the L/E of the stab, and on the Xtra it has been > lowered even further. > For the UK approval we had to conduct a formal and demanding flight test > program and no problems were found when the stab was fitted as per drawings. > Your problem may well lay with an out of CG aircraft (tail heavy) or the > trim system incorrectly adjusted. > > Mike > Xtra/Jab 2200 > G-CDFA > ----- Original Message ----- > From: "James, Ken" <KDJames@berkscareer.com> > To: <kolb-list@matronics.com> > Subject: RE: Kolb-List: stabilizer incidence > > > > --> Kolb-List message posted by: "James, Ken" <KDJames@berkscareer.com> > > > > Can any of you MK III X guys take photos of your Horz Stab attachment > > point, > > I have all the parts made, and I'm at the point of drilling. I would like > > to > > see some typical mounts that are flying. > > > > Thanks Ken James > > Drafting Design Technology Instructor > > > > Berks Career and Technology Center > > East Campus > > 3307 Friedensburg Rd. > > Oley, Pa. 19506 > > 610-987-6201 Ext. 3532 > > > > Kdjames@berkscareer.com > > > > > > -----Original Message----- > > From: Jim Ballenger [mailto:ulpilot@cavtel.net] > > To: kolb-list@matronics.com > > Subject: Re: Kolb-List: stabilizer incidence > > > > > > --> Kolb-List message posted by: "Jim Ballenger" <ulpilot@cavtel.net> > > > > Rex > > I ended up with the top of the stabilizer leading edge slightly higher > > than > > the boom tube. I left the original bracket on the tube and mounted the 4 > > hole adjustable bracket directly above it. I am extremely satisfied with > > the results. If you use the modified bracket by itself, make sure the top > > hole will allow the top of the stabilizer leading edge to be slightly > > above > > the boom tube. > > Jim > > ----- Original Message ----- > > From: "Rex Rodebush" <rrodebush@tema.net> > > To: <kolb-list@matronics.com> > > Subject: Kolb-List: stabilizer incidence > > > > > >> --> Kolb-List message posted by: "Rex Rodebush" <rrodebush@tema.net> > >> > >> Jim, > >> > >> I also bought the adjustable brackets a few years ago because Kolb keep > >> changing the recommended location of the stabilizer. It changed from > >> about the middle of the fuselage tube to towards the top and then maybe > >> back again. > >> > >> Where did you finally position it with respect to the top of the tube? > >> > >> Congratulations on your first flight! > >> > >> Thanks, > >> > >> Rex Rodebush > >> Building a Mark III Xtra > >> > >> > >> Time: 02:09:48 PM PST US > >> From: "Jim Ballenger" <ulpilot@cavtel.net> > >> Subject: Kolb-List: MK III X N46319 TEST FLIGHTS > >> > >> --> Kolb-List message posted by: "Jim Ballenger" <ulpilot@cavtel.net> > >> > >> All > >> > >> This is a little late but my MK III X received it airworthiness > >> certificate on > >> 7 May and I flew it's first flight on 14 May. The horizontal stabilizer > >> incidence > >> was way off, I had to hold stick forward as far as I could stretch my > >> arms. > >> After researching the archives and reading Guy Swenson's comments on the > >> HZ > >> stab incidence and talking to Bill Futrell, I had TNK send me one of the > >> adjustable > >> brackets(thanks Donny,Travis and Denny). I brought the LE up 2 5/8" > >> and it solved the problem. > >> > >> > > > > > > > >


    Message 15


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    Time: 09:44:47 PM PST US
    From: WADE LAWICKI <wlawicki@yahoo.com>
    Subject: Re: Predicted Death
    --> Kolb-List message posted by: WADE LAWICKI <wlawicki@yahoo.com> Scott/ group, I was the owner of the yellow firestar that talked to you and Mr. Primm on sat. It was a basket case, there were at least 4 reasons for it being grounded,landing gear rigged up,large prop chip,no gap seal,no w&b,homemade parts. the last i heard was that the strut failed, these looked like the landing gear tubes( ends crimped in vice and split on sides) that failed upon his arrival. he also owned a trike in about the same condition. it might have had something to do with the fact that he only had about 3 hours in this plane before he flew a 50 mile x-country or, that the conventional 3 axis was exactly opposite controls that he was used to. Mr. Primm was a fine man, very pro-active in the local and regional ultralight community but, sadly he did not take the condition of his equipment nor the advice of his peers serious enough and it cost him the ultimate price. Fly Safe, Wade Lawicki FS #1030 --------------------------------- Find restaurants, movies, travel & more fun for the weekend. Check it out!


    Message 16


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    Time: 11:51:38 PM PST US
    From: dralle@matronics.com
    Subject: Official Usage Guideline [Please Read] [Monthly Posting]
    DNA: do not archive --> Kolb-List message posted by: dralle@matronics.com Dear Lister, Please read over the Kolb-List Usage Guidelines below. The complete Kolb-List FAQ including these Usage Guidelines can be found at the following URL: http://www.matronics.com/FAQs/Kolb-List.FAQ.html Thank you, Matt Dralle Matronics Email List Administrator ****************************************************************************** Kolb-List Usage Guidelines ****************************************************************************** The following details the official Usage Guidelines for the Kolb-List. You are encouraged to read it carefully, and to abide by the rules therein. Failure to use the Kolb-List in the manner described below may result in the removal of the subscribers from the List. Kolb-List Policy Statement The purpose of the Kolb-List is to provide a forum of discussion for things related to this particular discussion group. The List's goals are to serve as an information resource to its members; to deliver high-quality content; to provide moral support; to foster camaraderie among its members; and to support safe operation. Reaching these goals requires the participation and cooperation of each and every member of the List. To this end, the following guidelines have been established: - Please keep all posts related to the List at some level. Do not submit posts concerning computer viruses, urban legends, random humor, long lost buddies' phone numbers, etc. etc. - THINK carefully before you write. Ask yourself if your post will be relevant to everyone. If you have to wonder about that, DON'T send it. - Remember that your post will be included for posterity in an archive that is growing in size at an extraordinary rate. Try to be concise and terse in your posts. Avoid overly wordy and lengthy posts and responses. - Keep your signature brief. Please include your name, email address, aircraft type/tail number, and geographic location. A short line about where you are in the building process is also nice. Avoid bulky signatures with character graphics; they consume unnecessary space in the archive. - DON'T post requests to the List for information when that info is easily obtainable from other widely available sources. Consult the web page or FAQ first. - If you want to respond to a post, DO keep the "Subject:" line of your response the same as that of the original post. This makes it easy to find threads in the archive. - When responding, NEVER quote the *entire* original post in your response. DO use lines from the original post to help "tune in" the reader to the topic at hand, but be selective. The impact that quoting the entire original post has on the size of the archive can not be overstated! - When the poster asks you to respond to him/her personally, DO NOT then go ahead and reply to the List. Be aware that clicking the "reply" button on your mail package does not necessarily send your response to the original poster. You might have to actively address your response with the original poster's email address. - DO NOT use the List to respond to a post unless you have something to add that is relevant and has a broad appeal. "Way to go!", "I agree", and "Congratulations" are all responses that are better sent to the original poster directly, rather than to the List at large. - When responding to others' posts, avoid the feeling that you need to comment on every last point in their posts, unless you can truly contribute something valuable. - Feel free to disagree with other viewpoints, BUT keep your tone polite and respectful. Don't make snide comments, personally attack other listers, or take the moral high ground on an obviously controversial issue. This will only cause a pointless debate that will hurt feelings, waste bandwidth and resolve nothing. ------- [This is an automated posting.]




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