---------------------------------------------------------- Zenith-List Digest Archive --- Total Messages Posted Tue 07/26/05: 26 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 01:31 AM - Re: cruise speed ? What is the hurry? (Gary Gower) 2. 03:43 AM - Re: Re: STABILIZER DRAIN HOLES? (Dave Austin) 3. 05:00 AM - STABILIZER DRAIN HOLES? (Grant Corriveau) 4. 05:17 AM - "Bearings and Belt Drives" - oh my! (Grant Corriveau) 5. 06:22 AM - Re: "Bearings and Belt Drives" - oh my! (Larry) 6. 07:06 AM - Re: She's Airworthy! - and fuel tank vent question (Larry McFarland) 7. 07:15 AM - Re: 1200 miles (Hinde, Frank George (Corvallis)) 8. 07:16 AM - Re: 1200 miles (Hinde, Frank George (Corvallis)) 9. 07:20 AM - Re: She's Airworthy! - and fuel tank vent question (Hinde, Frank George (Corvallis)) 10. 07:21 AM - Re: "Bearings and Belt Drives" - oh my! (JAPhillipsGA@aol.com) 11. 07:22 AM - Re: Cracked Muffler, Jabiru 3300 on 601HDS (bryanmmartin@comcast.net) 12. 07:29 AM - Re: cruise speed ? What is the hurry? (Hinde, Frank George (Corvallis)) 13. 07:38 AM - Re: "Bearings and Belt Drives" - oh my! (Hinde, Frank George (Corvallis)) 14. 07:47 AM - Re: Cracked Muffler, Jabiru 3300 on 601HDS (Paul Hartl) 15. 08:12 AM - Re: Re: Tail Tie Down 701 (Leo Corbalis) 16. 08:23 AM - Re: Re: Tail Tie Down 701 (JERICKSON03E@aol.com) 17. 09:10 AM - Re: XL Rudder fairing (N5SL) 18. 09:42 AM - Re: "Bearings and Belt Drives" - oh my! (gary) 19. 11:17 AM - Re: XL Rudder fairing (japhillipsga@aol.com) 20. 01:10 PM - Re: "Bearings and Belt Drives" - oh my! (Ed Jeffko) 21. 01:13 PM - 701 cabin sides with bench mounted rivet tool (Monty Graves) 22. 01:34 PM - Re: cruise speed ? (Thilo Kind) 23. 03:42 PM - Re: Photo Assembly Guide (Dave VanLanen) 24. 06:38 PM - 601XL Trouble with top skin and side cover (Mark Stauffer) 25. 06:38 PM - Re: Re: Tail Tie Down 701 (Chuck Deiterich) 26. 10:11 PM - Re: She's Airworthy! - and fuel tank vent question (Leo Gates) ________________________________ Message 1 _____________________________________ Time: 01:31:29 AM PST US From: Gary Gower Subject: RE: Zenith-List: cruise speed ? What is the hurry? --> Zenith-List message posted by: Gary Gower Not a BIG diference, if you enjoy your flight... Doing some numbers I got this. All in no wind condition, no fuel stops, just playing with numbers: 1,200 miles trip. in a 701 at 90 mph (my cruise at 5,000-912S) sight seeing about 13 hrs in a 601 XL at 135 mph ( list data) about 9 hrs in a RV (?) at 165 mph (estimated/ imagined speed) about 7.30 hrs in a Airline (once the ticket booth line, all the security checks and "normal" airline delays) about 16 hrs :-) :-) See: whats is the hurry :-) :-) Im Sorry Frank, couldnt resist... Saludos Gary Gower I fly for fun... "Hinde, Frank George (Corvallis)" wrote: --> Zenith-List message posted by: "Hinde, Frank George (Corvallis)" Well actually its impossible to have everything in one airplane... I have family that lives 1200miles away on the other side of the Rockie mountains...And my Wife wants us to fly ourselves there...Hard to imagine such a journey in a 701...:) Frank Do not archive -----Original Message----- From: owner-zenith-list-server@matronics.com [mailto:owner-zenith-list-server@matronics.com] On Behalf Of Gary Gower Subject: Re: Zenith-List: cruise speed ? What is the hurry? --> Zenith-List message posted by: Gary Gower I just cant understand why is the hurry? The ZAC airplanes fly great and easy (At least the 701 does) , I am sure that the faster airplanes are more faster to land and need aways hard surfaces to land. ZAC airplanes might be a few MPH slowers but can land with no problem in any grass strip... Is dificult to have everything in an airplane. Saludos Gary Gower. Dave Austin wrote: --> Zenith-List message posted by: "Dave Austin" Frank, It is not max power as I set the prop to get the 5300 rpm at vac of 25. Dave Austin 601HDS - 912 ________________________________ Message 2 _____________________________________ Time: 03:43:39 AM PST US From: "Dave Austin" Subject: Re: Zenith-List: Re: STABILIZER DRAIN HOLES? --> Zenith-List message posted by: "Dave Austin" Up here in the north all the inspectors will demand drain holes at the lowest point in each component and in front of every bulkhead in the fuselage. Usually done with a 1/4 bit, and after deburring, put the drill back in the hole and tilt it backward from the line of flight so that the skin deforms a bit and acts as a sort of extractor. Dave Austin 601HDS - 912 ________________________________ Message 3 _____________________________________ Time: 05:00:39 AM PST US Subject: Zenith-List: STABILIZER DRAIN HOLES? From: Grant Corriveau --> Zenith-List message posted by: Grant Corriveau > Subject: RE: Zenith-List: STABILIZER DRAIN HOLES? > This is standard procedure. There should be weep holes in low points of the > fuselage too I visited my plane immediately after a night of heavy downpour. It was informative as I found new places to drill some drain holes to let out the water acculations more quickly. These were mainly in the center fuselage area between the wings. This is probably the area where a lot of water runs towards from the tail and both wings. -- Grant Corriveau C-GHTF / HDS ________________________________ Message 4 _____________________________________ Time: 05:17:41 AM PST US Subject: Zenith-List: "Bearings and Belt Drives" - oh my! From: Grant Corriveau --> Zenith-List message posted by: Grant Corriveau I would appreciate some thoughts from those of you with mechanical experience regarding a noise I'm hearing in my CAM100 Honda conversion. While flying I had a 'squeal' that lasted for a few seconds, then abruptly quit. There were no other indications and I was unable to reproduce it, so I 'filed it' in memory and kept flying. Later, while standing next to the idling engine, I realized there is a low frequency 'grumbly' or 'grinding?' noise that seems to be coming from the front of the engine -- possibly from the top pulley of the belt drive...? (Obviously, with the prop going round 'n round and the belt drive and other sundry items spinning about, I'm reluctant to get my ears too close... My engine has only 35 hours on it in 5 years (!) ... yes, I am getting more than a little impatient with the CAM100 'reliability' - although some of that lost time was due to other causes besides engine 'issues'... The belt drive is a maxi-heavy duty sucker with a very large cog-belt. This belt is kept in alignment by the action of the lower cogwheel on the driveshaft by some pfm technique that I don't fully understand. Even so - the belt used to track about 1/8" off the rear edge of the upper pulley - now I'm wondering if it's increasing to 1/4" ? Or is it just my imagination? I should have made careful measurements back 'when' but had too many other issues going on. The noise, I'm told, could be a belt tracking noise, or could be a bearing failure. I have heard similar noises in smaller bearing failures on my cars over the years (such as an alternator bearing failure etc..). I don't have any experience with cog-belt drives to recognize how this could cause the noise, but another pilot on the field, with a Subaru belt drive unit says he gets these low frequency 'grinding' noises when his belt is out of adjustment fore/aft . For now this noise is not loud enough to be heard with the engine cowls on whle sitting inside the cockpit and the engine runs up to full power with no noticeable excessive vibes... So, I may have to keep flying it until the noise gets louder and I can spot the problem...? sheeesh ... My local garage mechanic had a few ideas to look into, and I'd appreciate any other ideas some may have regarding "Bearings and Belt Drives" - oh my! Thanks in advance -- Grant Corriveau C-GHTF / HDS / CAM100 ________________________________ Message 5 _____________________________________ Time: 06:22:40 AM PST US From: "Larry" Subject: Re: Zenith-List: "Bearings and Belt Drives" - oh my! --> Zenith-List message posted by: "Larry" Could be several things. A belt system is going to make some noise. If I didn't feel comfortable with it, I would or have my mechanic pull and check, replace and/or pack the bearings. Don't get the bearings too tight, remember when they get hot, they will expand. Belts must track true. If it's not tracking dead center, you gotta fix it. Larry Martin, N1345L www.angelfire.com/un/ch701 ----- Original Message ----- From: "Grant Corriveau" Subject: Zenith-List: "Bearings and Belt Drives" - oh my! > --> Zenith-List message posted by: Grant Corriveau > > I would appreciate some thoughts from those of you with mechanical > experience regarding a noise I'm hearing in my CAM100 Honda conversion. > > While flying I had a 'squeal' that lasted for a few seconds, then abruptly > quit. There were no other indications and I was unable to reproduce it, so > I 'filed it' in memory and kept flying. > > Later, while standing next to the idling engine, I realized there is a low > frequency 'grumbly' or 'grinding?' noise that seems to be coming from the > front of the engine -- possibly from the top pulley of the belt drive...? > (Obviously, with the prop going round 'n round and the belt drive and other > sundry items spinning about, I'm reluctant to get my ears too close... > > My engine has only 35 hours on it in 5 years (!) ... yes, I am getting more > than a little impatient with the CAM100 'reliability' - although some of > that lost time was due to other causes besides engine 'issues'... > > The belt drive is a maxi-heavy duty sucker with a very large cog-belt. This > belt is kept in alignment by the action of the lower cogwheel on the > driveshaft by some pfm technique that I don't fully understand. > > Even so - the belt used to track about 1/8" off the rear edge of the upper > pulley - now I'm wondering if it's increasing to 1/4" ? Or is it just my > imagination? I should have made careful measurements back 'when' but had > too many other issues going on. > > The noise, I'm told, could be a belt tracking noise, or could be a bearing > failure. I have heard similar noises in smaller bearing failures on my cars > over the years (such as an alternator bearing failure etc..). I don't have > any experience with cog-belt drives to recognize how this could cause the > noise, but another pilot on the field, with a Subaru belt drive unit says he > gets these low frequency 'grinding' noises when his belt is out of > adjustment fore/aft . > > For now this noise is not loud enough to be heard with the engine cowls on > whle sitting inside the cockpit and the engine runs up to full power with no > noticeable excessive vibes... So, I may have to keep flying it until the > noise gets louder and I can spot the problem...? sheeesh ... > > My local garage mechanic had a few ideas to look into, and I'd appreciate > any other ideas some may have regarding "Bearings and Belt Drives" - oh my! > > Thanks in advance > -- > Grant Corriveau > C-GHTF / HDS / CAM100 > > > -- > -- ________________________________ Message 6 _____________________________________ Time: 07:06:57 AM PST US From: Larry McFarland Subject: Re: Zenith-List: She's Airworthy! - and fuel tank vent question --> Zenith-List message posted by: Larry McFarland Paul, Congratulations, hard work finally won out for you! If your overflow tube is high enough, it isn't going to suck fuel from the tank unless you're in some unusual attitude. My tubes hang 3/4" below the surface of the wings and terminate an inch below the top of the tank. I've not experienced enough flight with full tanks to have realized any fuel loss. Low pressure concern assumes you've got gasoline near the top of the tube. Larry McFarland - 601HDS at www.macsmachine.com do not archive Paul Hartl wrote: >--> Zenith-List message posted by: "Paul Hartl" > >Hi all, > >N414PZ, my HDS, just passed her airworthiness inspection today - after 7 only >short years! Thanks to a few local friends, including 701 builder Win Ellis, and >this list, I can finally breath a (short) sigh of relief. > >My DAR had a question about the fuel vent on the ZAC-supplied leading edge tank, >and wondered if it should be shorter, or perhaps terminated differently, in order to >avoid a low pressure condition that could suck fuel. Mine is cut off flat (parallel to >the underside of the wing) and protrudes 16 mm down from the wing bottom. >Any comments? > >Thanks! Paul > >Paul Hartl, 601HDS, Jabiru 3300A, finishing stages >Flight Simulator 2002/4 Zodiac Website: www.members.cox.net/paulhartl >Sun Valley, Idaho 83340 208-788-9147 > > > > ________________________________ Message 7 _____________________________________ Time: 07:15:22 AM PST US Subject: RE: Zenith-List: 1200 miles From: "Hinde, Frank George (Corvallis)" --> Zenith-List message posted by: "Hinde, Frank George (Corvallis)" Oh I believe me I know...:) The "regularly" means spring thru Autumn (don't really want to deal with icing) and the RV and I will be IFR. Frank Do not archive -----Original Message----- From: owner-zenith-list-server@matronics.com [mailto:owner-zenith-list-server@matronics.com] On Behalf Of Ron Lee Subject: Zenith-List: 1200 miles --> Zenith-List message posted by: "Ron Lee" If you are going to fly regularly 1200 miles one way, you have the wrong airplane. You should be instrament rated, your gages must be perfect, and it goes on and on. You will get weathered in and have to take commercial transportation home, then you have to get back to pick up your plane somehow! Trust me, I've been there. Ron Do not archive ________________________________ Message 8 _____________________________________ Time: 07:16:58 AM PST US Subject: RE: Zenith-List: 1200 miles From: "Hinde, Frank George (Corvallis)" --> Zenith-List message posted by: "Hinde, Frank George (Corvallis)" True but door to door I can beat the airliner for speed and the Lycoming will run quite nicely on autofuel...I have enough for just one way though...:) Besides, your missing the subtle message here....i want a 200mph aerobatic airplane...I had to find a way to convince the Wife...Her Parents live 1200 miles away....:) Frank Do not archive -----Original Message----- From: owner-zenith-list-server@matronics.com [mailto:owner-zenith-list-server@matronics.com] On Behalf Of ron dewees Subject: Re: Zenith-List: 1200 miles --> Zenith-List message posted by: ron dewees Ditto Ron, I have a Mooney that cruses at 160 mph and IFR rating. I find it cheaper to fly commercial with $4 a gallon fuel. Ron do not archive Ron Lee wrote: >--> Zenith-List message posted by: "Ron Lee" > >If you are going to fly regularly 1200 miles one way, you have the wrong airplane. You should be instrament rated, your gages must be perfect, and it goes on and on. You will get weathered in and have to take commercial transportation home, then you have to get back to pick up your plane somehow! Trust me, I've been there. >Ron >Do not archive > > > > ________________________________ Message 9 _____________________________________ Time: 07:20:18 AM PST US Subject: RE: Zenith-List: She's Airworthy! - and fuel tank vent question From: "Hinde, Frank George (Corvallis)" --> Zenith-List message posted by: "Hinde, Frank George (Corvallis)" That is standard but I have to agree with the DAR...the VAN's vents are cut off at 45 degrees and a bit shorter. They definatly have a positive effect (i.e pressurise the tank slightly) so filing them at 45 deg is not a bad idea.... Frank -----Original Message----- From: owner-zenith-list-server@matronics.com [mailto:owner-zenith-list-server@matronics.com] On Behalf Of Paul Hartl Subject: Zenith-List: She's Airworthy! - and fuel tank vent question --> Zenith-List message posted by: "Paul Hartl" Hi all, N414PZ, my HDS, just passed her airworthiness inspection today - after 7 only short years! Thanks to a few local friends, including 701 builder Win Ellis, and this list, I can finally breath a (short) sigh of relief. My DAR had a question about the fuel vent on the ZAC-supplied leading edge tank, and wondered if it should be shorter, or perhaps terminated differently, in order to avoid a low pressure condition that could suck fuel. Mine is cut off flat (parallel to the underside of the wing) and protrudes 16 mm down from the wing bottom. Any comments? Thanks! Paul Paul Hartl, 601HDS, Jabiru 3300A, finishing stages Flight Simulator 2002/4 Zodiac Website: www.members.cox.net/paulhartl Sun Valley, Idaho 83340 208-788-9147 ________________________________ Message 10 ____________________________________ Time: 07:21:03 AM PST US From: JAPhillipsGA@aol.com Subject: Re: Zenith-List: "Bearings and Belt Drives" - oh my! --> Zenith-List message posted by: JAPhillipsGA@aol.com Grant, on your possible belt migration. All things being equal it should remain pretty well centered unless several factors occur. If there is a variance in the angle between the two wheels the belt travels across. This will cause "spooling" or just have it travel to the end with least resistance. The second could be a flaw in the belt at manufacture that causes less flexibility at one side and this will allow travel toward the "weaker" or more flexible side of the belt. The last is that gravity can cause a belt to travel. If the barrels are tilted even a little bit simple gravity will move the belt towards the ground. This is much more gradual effect and can occur even if the first two factors are not in the picture. This describes the possible causes for belt shift, but unfortunately it does not offer the solutions. I learned about belt problems and the terrible efforts to correct them from working summers (many years ago) as a machine operator and maintenance guy at a woolen mill that ran hundreds of machines off dozens of belts. Seen the movie 'Norma Rae' ? We constantly worked to keep the spinners operating and lot of it was on the belts. Best of luck and FWIW, Bill of Georgia ________________________________ Message 11 ____________________________________ Time: 07:22:10 AM PST US From: bryanmmartin@comcast.net Subject: Re: Zenith-List: Cracked Muffler, Jabiru 3300 on 601HDS --> Zenith-List message posted by: bryanmmartin@comcast.net Jabiru has an AD on some exhaust systems because the flanges were MIG welded instead of TIG welded. The pipes cracked right at the welds. The weld should be concave not convex. I don't know if this applies to your problem. A member of my EAA chapter had this problem and I believe He downloaded the AD from Jabiru's website. -------------- Original message -------------- > --> Zenith-List message posted by: charles.long@gm.com > > > I have a cracked muffler after only 15 hr TT on my 601 HDS with > Jabiru 3300. A couple things to note. First, the fit was very tight > between the muffler pipes and header pipes. In retrospect, I should > Thanks > Chuck Long > N601LE, 15 hr TT > > Jabiru has an AD on some exhaust systems because the flanges were MIG welded instead of TIG welded. The pipes cracked right at the welds. The weld should be concave not convex. I don't know if this applies to your problem. A member of my EAA chapter had this problem and I believe He downloaded the AD from Jabiru's website. -------------- Original message -------------- -- Zenith-List message posted by: charles.long@gm.com I have a cracked muffler after only 15 hr TT on my 601 HDS with Jabiru 3300. A couple things to note. First, the fit was very tight between the muffler pipes and header pipes. In retrospect, I should Thanks Chuck Long N601LE, 15 hr TT ________________________________ Message 12 ____________________________________ Time: 07:29:34 AM PST US Subject: RE: Zenith-List: cruise speed ? What is the hurry? From: "Hinde, Frank George (Corvallis)" --> Zenith-List message posted by: "Hinde, Frank George (Corvallis)" Missing one small point...(assuming IFR capability) altitude capability is up to about 22000 ft...There are some awesome tailwinds up there...:) Cruise speed of a good RV7 is roughly 180mph (lean of peak) and 200(rich of peak)...These are real numbers, not the fantasy claims of some other kit manufacturers...I can hardly wait...:) Now how many times will I make this fabled journey?...Never hopefully, my Mother in Law is not the most fun person to be around...ha ha..:) Frank... Do not archive -----Original Message----- From: owner-zenith-list-server@matronics.com [mailto:owner-zenith-list-server@matronics.com] On Behalf Of Gary Gower Subject: RE: Zenith-List: cruise speed ? What is the hurry? --> Zenith-List message posted by: Gary Gower Not a BIG diference, if you enjoy your flight... Doing some numbers I got this. All in no wind condition, no fuel stops, just playing with numbers: 1,200 miles trip. in a 701 at 90 mph (my cruise at 5,000-912S) sight seeing about 13 hrs in a 601 XL at 135 mph ( list data) about 9 hrs in a RV (?) at 165 mph (estimated/ imagined speed) about 7.30 hrs in a Airline (once the ticket booth line, all the security checks and "normal" airline delays) about 16 hrs :-) :-) See: whats is the hurry :-) :-) Im Sorry Frank, couldnt resist... Saludos Gary Gower I fly for fun... "Hinde, Frank George (Corvallis)" wrote: --> Zenith-List message posted by: "Hinde, Frank George (Corvallis)" Well actually its impossible to have everything in one airplane... I have family that lives 1200miles away on the other side of the Rockie mountains...And my Wife wants us to fly ourselves there...Hard to imagine such a journey in a 701...:) Frank Do not archive -----Original Message----- From: owner-zenith-list-server@matronics.com [mailto:owner-zenith-list-server@matronics.com] On Behalf Of Gary Gower Subject: Re: Zenith-List: cruise speed ? What is the hurry? --> Zenith-List message posted by: Gary Gower I just cant understand why is the hurry? The ZAC airplanes fly great and easy (At least the 701 does) , I am sure that the faster airplanes are more faster to land and need aways hard surfaces to land. ZAC airplanes might be a few MPH slowers but can land with no problem in any grass strip... Is dificult to have everything in an airplane. Saludos Gary Gower. Dave Austin wrote: --> Zenith-List message posted by: "Dave Austin" Frank, It is not max power as I set the prop to get the 5300 rpm at vac of 25. Dave Austin 601HDS - 912 ________________________________ Message 13 ____________________________________ Time: 07:38:07 AM PST US Subject: RE: Zenith-List: "Bearings and Belt Drives" - oh my! From: "Hinde, Frank George (Corvallis)" --> Zenith-List message posted by: "Hinde, Frank George (Corvallis)" I would probably pull the belt off and spin the prop slowly by hand to see if you can feel ANY roughness...By the time you have the belt off (at least on the Stratus) its not much more work to pull the prop bearings out, and even though they are large they are pretty cheap to replace. Frank -----Original Message----- From: owner-zenith-list-server@matronics.com [mailto:owner-zenith-list-server@matronics.com] On Behalf Of Larry Subject: Re: Zenith-List: "Bearings and Belt Drives" - oh my! --> Zenith-List message posted by: "Larry" Could be several things. A belt system is going to make some noise. If I didn't feel comfortable with it, I would or have my mechanic pull and check, replace and/or pack the bearings. Don't get the bearings too tight, remember when they get hot, they will expand. Belts must track true. If it's not tracking dead center, you gotta fix it. Larry Martin, N1345L www.angelfire.com/un/ch701 ----- Original Message ----- From: "Grant Corriveau" Subject: Zenith-List: "Bearings and Belt Drives" - oh my! > --> Zenith-List message posted by: Grant Corriveau > --> > > I would appreciate some thoughts from those of you with mechanical > experience regarding a noise I'm hearing in my CAM100 Honda conversion. > > While flying I had a 'squeal' that lasted for a few seconds, then > abruptly quit. There were no other indications and I was unable to > reproduce it, so > I 'filed it' in memory and kept flying. > > Later, while standing next to the idling engine, I realized there is a > low frequency 'grumbly' or 'grinding?' noise that seems to be coming > from the front of the engine -- possibly from the top pulley of the belt drive...? > (Obviously, with the prop going round 'n round and the belt drive and other > sundry items spinning about, I'm reluctant to get my ears too close... > > My engine has only 35 hours on it in 5 years (!) ... yes, I am getting more > than a little impatient with the CAM100 'reliability' - although some > of that lost time was due to other causes besides engine 'issues'... > > The belt drive is a maxi-heavy duty sucker with a very large cog-belt. This > belt is kept in alignment by the action of the lower cogwheel on the > driveshaft by some pfm technique that I don't fully understand. > > Even so - the belt used to track about 1/8" off the rear edge of the > upper pulley - now I'm wondering if it's increasing to 1/4" ? Or is it > just my imagination? I should have made careful measurements back > 'when' but had too many other issues going on. > > The noise, I'm told, could be a belt tracking noise, or could be a > bearing failure. I have heard similar noises in smaller bearing > failures on my cars > over the years (such as an alternator bearing failure etc..). I don't have > any experience with cog-belt drives to recognize how this could cause > the noise, but another pilot on the field, with a Subaru belt drive > unit says he > gets these low frequency 'grinding' noises when his belt is out of > adjustment fore/aft . > > For now this noise is not loud enough to be heard with the engine > cowls on whle sitting inside the cockpit and the engine runs up to > full power with no > noticeable excessive vibes... So, I may have to keep flying it until > the noise gets louder and I can spot the problem...? sheeesh ... > > My local garage mechanic had a few ideas to look into, and I'd > appreciate any other ideas some may have regarding "Bearings and Belt > Drives" - oh my! > > Thanks in advance > -- > Grant Corriveau > C-GHTF / HDS / CAM100 > > > -- > -- ________________________________ Message 14 ____________________________________ Time: 07:47:51 AM PST US From: "Paul Hartl" Subject: Zenith-List: Re: Cracked Muffler, Jabiru 3300 on 601HDS --> Zenith-List message posted by: "Paul Hartl" Hi Chuck, I talked to Jabiru about this, as I had screwed up the welding on the tailpipes on mine, and considered a new one - $450, or cutting off and modifying the incorrectly welded tailpipes. Ben at Jabiru USA said that there were a batch of bad mufflers that came from their source in Australia, and that all of these had the MIG welds instead of the TIG welds. Jabiru Australia's website talks about these, and possible fix, but Ben also said that most of the MIG-welded mufflers were holding up, and only some were problematic. He suspects improper metal used for the muffler body itself. So the upshot is that Jabiru will replace a bad muffler for free, but not until it fails. I didn't think it would be worth trying to salvage my messed-up mufflers after hearing that story, so I decided to try the "Swiss" (or is it Swedish?) mufflers that Joe Edwards is using (detailed in Tony Bingelis's book - also available on line - just Google "Swiss muffler"). I'm glad I did - so far. These Swiss mufflers are amazingly quiet, relatively easy to make, and require no welding. On the down side, they're heavier, draggier, you have to re-fashion your carb heat and cabin heat muffs, and may require some adjustments over time. One other positive, though, is that my cabin heat muff now draws off of a solid piece of exhaust pipe, with none of the potential for cracks to develop and CO to be entrained that the Jab-muffler heat-muff has. Hope this helps! Paul Paul Hartl, 601HDS, Jabiru 3300A, finishing stages Flight Simulator 2002/4 Zodiac Website: www.members.cox.net/paulhartl Sun Valley, Idaho 83340 208-788-9147 ________________________________ Message 15 ____________________________________ Time: 08:12:32 AM PST US From: "Leo Corbalis" Subject: Re: Zenith-List: Re: Tail Tie Down 701 --> Zenith-List message posted by: "Leo Corbalis" I have a 601HDS TD in which I have made several "carrier landings" . I can assure you that the tail cone is strong enough! Leo Corbalis do not archive ----- Original Message ----- From: Subject: Zenith-List: Re: Tail Tie Down 701 > --> Zenith-List message posted by: RURUNY@aol.com > > > Jim, > > I was thinking about beefing this up and installing an eyebolt there in > the > future but > I went with the Zenith design because it is basically the toughest thing > in > the rear tail area. The longerons and skin its attached to isn't exactly > the > most robust thing > I've ever seen. Without beefing up the whole tail area, I don't know if it > would be worth it. > I'm not flying mine yet so take this for what its worth. > > Brian > > > ________________________________ Message 16 ____________________________________ Time: 08:23:04 AM PST US From: JERICKSON03E@aol.com Subject: Re: Zenith-List: Re: Tail Tie Down 701 --> Zenith-List message posted by: JERICKSON03E@aol.com In a message dated 7/25/2005 11:32:26 PM Central Daylight Time, RURUNY@aol.com writes: I was thinking about beefing this up and installing an eyebolt there in the future but Been thinking about a tail skid for tail protection and a tie down hard point. Any ideas for a design to fit the 701? Perhaps something like the skid on the 2000? Jerry ________________________________ Message 17 ____________________________________ Time: 09:10:53 AM PST US From: N5SL Subject: Re: Zenith-List: XL Rudder fairing --> Zenith-List message posted by: N5SL Hi Rico: Although this part was a little frustrating, it fit nicely into place with a little trimming - of the rudder and the fiberglass part. http://www.cooknwithgas.com/4_24_05_tailhorn.JPG Mine tucks under nicely and holds down tight with just four clecos. I'll probably put one rivet in the front part that tucks under the aluminum. Take your time and trim a little each time and it should fit just fine. Scott Laughlin 601XL/Corvair William came through! I have my prop hub now. www.cooknwithgas.com DO NOT ARCHIVE --> Zenith-List message posted by: Rico Voss Fellow fiberglass itchers, There's been some people that have attached the fiberglass rudder fairing to the rear topskin -- by putting the fiberglass piece on top --------------------------------- ________________________________ Message 18 ____________________________________ Time: 09:42:04 AM PST US From: "gary" Subject: Re: Zenith-List: "Bearings and Belt Drives" - oh my! --> Zenith-List message posted by: "gary" > Even so - the belt used to track about 1/8" off the rear edge of the upper > pulley - now I'm wondering if it's increasing to 1/4" ? Or is it just my > imagination? I should have made careful measurements back 'when' but had > too many other issues going on. > on the Stratus, a tool is provided to measure between the top and bottom pulleys. measure in front and in back and they must be within a few thousandths. gary ________________________________ Message 19 ____________________________________ Time: 11:17:10 AM PST US From: japhillipsga@aol.com Subject: Re: Zenith-List: XL Rudder fairing --> Zenith-List message posted by: japhillipsga@aol.com Scott, saw your photo and looks like fine workmanship. Concerning the rudder cover. I would recomend you put a thin piece of carboard under the sides on top of the stabilizer and file up until th hole match. The reason is I had my cover touching the surface in a couple places and in only a couple flights it wore thru the paint and started working on the metal. The stabilizer does move up and down and tilt a bit as you manuver, FWIW, Best regards, Bill of Georgia -----Original Message----- From: N5SL Subject: Re: Zenith-List: XL Rudder fairing --> Zenith-List message posted by: N5SL Hi Rico: Although this part was a little frustrating, it fit nicely into place with a little trimming - of the rudder and the fiberglass part. http://www.cooknwithgas.com/4_24_05_tailhorn.JPG Mine tucks under nicely and holds down tight with just four clecos. I'll probably put one rivet in the front part that tucks under the aluminum. Take your time and trim a little each time and it should fit just fine. Scott Laughlin 601XL/Corvair William came through! I have my prop hub now. www.cooknwithgas.com DO NOT ARCHIVE --> Zenith-List message posted by: Rico Voss Fellow fiberglass itchers, There's been some people that have attached the fiberglass rudder fairing to the rear topskin -- by putting the fiberglass piece on top --------------------------------- ________________________________ Message 20 ____________________________________ Time: 01:10:23 PM PST US From: "Ed Jeffko" Subject: Re: Zenith-List: "Bearings and Belt Drives" - oh my! --> Zenith-List message posted by: "Ed Jeffko" Grant, Get a stethescope, mechanics have them for locating noises. You could also get a long screwdriver, put the handle against your ear, move the blade around to locate the noise. You might want to remove the prop. A good bearing will sound smooth, grinding is a no no. Above all, don't fly until you trouble shoot, by the time you hear the noise in the cockpit you will be looking for a place to land. My opinions only. Ed ----- Original Message ----- From: "Grant Corriveau" Subject: Zenith-List: "Bearings and Belt Drives" - oh my! > --> Zenith-List message posted by: Grant Corriveau > > I would appreciate some thoughts from those of you with mechanical > experience regarding a noise I'm hearing in my CAM100 Honda conversion. > > While flying I had a 'squeal' that lasted for a few seconds, then abruptly > quit. There were no other indications and I was unable to reproduce it, so > I 'filed it' in memory and kept flying. > > Later, while standing next to the idling engine, I realized there is a low > frequency 'grumbly' or 'grinding?' noise that seems to be coming from the > front of the engine -- possibly from the top pulley of the belt drive...? > (Obviously, with the prop going round 'n round and the belt drive and other > sundry items spinning about, I'm reluctant to get my ears too close... > > My engine has only 35 hours on it in 5 years (!) ... yes, I am getting more > than a little impatient with the CAM100 'reliability' - although some of > that lost time was due to other causes besides engine 'issues'... > > The belt drive is a maxi-heavy duty sucker with a very large cog-belt. This > belt is kept in alignment by the action of the lower cogwheel on the > driveshaft by some pfm technique that I don't fully understand. > > Even so - the belt used to track about 1/8" off the rear edge of the upper > pulley - now I'm wondering if it's increasing to 1/4" ? Or is it just my > imagination? I should have made careful measurements back 'when' but had > too many other issues going on. > > The noise, I'm told, could be a belt tracking noise, or could be a bearing > failure. I have heard similar noises in smaller bearing failures on my cars > over the years (such as an alternator bearing failure etc..). I don't have > any experience with cog-belt drives to recognize how this could cause the > noise, but another pilot on the field, with a Subaru belt drive unit says he > gets these low frequency 'grinding' noises when his belt is out of > adjustment fore/aft . > > For now this noise is not loud enough to be heard with the engine cowls on > whle sitting inside the cockpit and the engine runs up to full power with no > noticeable excessive vibes... So, I may have to keep flying it until the > noise gets louder and I can spot the problem...? sheeesh ... > > My local garage mechanic had a few ideas to look into, and I'd appreciate > any other ideas some may have regarding "Bearings and Belt Drives" - oh my! > > Thanks in advance > -- > Grant Corriveau > C-GHTF / HDS / CAM100 > > ________________________________ Message 21 ____________________________________ Time: 01:13:27 PM PST US From: Monty Graves Subject: Zenith-List: 701 cabin sides with bench mounted rivet tool --> Zenith-List message posted by: Monty Graves Just want to confirm from a previous discussion. Today I finished one of my 701 cabin sides using the bench mounted tool on the www.ch701.com web site to do ALL the solid AD rivets. And they turned out nice. Reach wasn't a problem. However I did have to cut the nose off of my top piece a few fractions so that the bolt was a little closer to the end. Making it able to set a rivet within 3/4 inch from the end, and do the rivets in the bottom corner . Not a big deal or modification. The only trick to using the riveter on the cabin sides is.... one needs to rivet the bottom line of rivets to the floor pan and .040 corner doubler FIRST other wise the side angles get in the way. Want to again thank Jon and Mark for coming up with this inexpensive tool. Pictures of the complete modifications of the bench mounted riveter will be on the 701builders yahoo site. Also pictures I took of Zeniths factory cabin side, And the cut outs of mine. As well as mistakes I made, and what I would do different so others might not make the same ones I did. Just different ones.... :-) Monty Graves ________________________________ Message 22 ____________________________________ Time: 01:34:07 PM PST US From: "Thilo Kind" Subject: Re: Zenith-List: cruise speed ? --> Zenith-List message posted by: "Thilo Kind" Hi folks, I get 120 mph with Woodcomp inflight adjustable prop, Rotax 912 at 5,100 RPM, water rad inside cowling, no wheel pants, at 2,000 MSL. Happy flying Thilo Kind ----- Original Message ----- From: "Richard McLachlan" Subject: Re: Zenith-List: cruise speed ? > --> Zenith-List message posted by: "Richard McLachlan" > > You are lucky. > > On our 601HDS trike with wheel spats we only get 102 mph IAS with a Rotax > 912, Warp Drive prop fixed at 13 degrees and 5000 RPM. When the OAT is above > about 25 degrees C, we have to run at 4800 RPM or less to keep the oil temp > down to 110 degrees C. This lowers the cruise speed to 95 mph IAS. We have > the Rotax oil rad inside the cowling. We used to have a more efficient oil > rad which worked better, but had to remove it and fit the (inferior) Rotax > model to allow the 912 TBO to be increased from 500 hours to 1500 hours. > > Richard > > ----- Original Message ----- > From: "Dave Austin" > To: > Subject: Re: Zenith-List: cruise speed ? > > > > --> Zenith-List message posted by: "Dave Austin" > > > > With Rotax 912, Arplast air adjustable prop, radiator and oil rad inside > the > > cowl, my HDS trike will cruise at 120 mph IAS using 5300 rpm > > Dave Austin 601HDS - 912 > > > > > > ________________________________ Message 23 ____________________________________ Time: 03:42:48 PM PST US From: "Dave VanLanen" Subject: Zenith-List: Re: Photo Assembly Guide --> Zenith-List message posted by: "Dave VanLanen" Thanks to everyone on the list for your help with this question. I can already see the value in this list, and I haven't even started building yet! Dave Van Lanen Madison, WI 601XL Do Not Archive ________________________________ Message 24 ____________________________________ Time: 06:38:34 PM PST US From: "Mark Stauffer" Subject: Zenith-List: 601XL Trouble with top skin and side cover --> Zenith-List message posted by: "Mark Stauffer" Fellow builders, I'm working on the side covers that go along the canopy arms at the pivot point. The side cover binds with the top skin when trying to open the canopy. I've got the top skin cut back as far as I can from the bend radius of the panel side angle without blowing the edge distance. I really don't want to cut the side cover down anymore either because it won't look right. I've only done one side and maybe it will be ok when I've got the rear canopy frame installed but I don't think so. Has anyone else run into this and if so how did you solve it. All I can come up with now is bending the welded tab a little more outboard and see if that helps. A bit of caution. I bought my kit in Jan '03, SN:4999. I always download the newest chapter of the photo guide before I start a new section. I also bought an updated set of plans about 6 months ago. Well, the photo guide uses the new side cover and I tried (didn't notice is a better explanation) it with the older parts. Well, that didn't work. Zenith did come through and send me the new parts at no cost, BUT the tab on the canopy arms is welded at the old angle. Just be careful, once again I wasn't paying 100% attention! I wonder if I should go back and make the side cover the old way, with the rubber seal and everything. It's not nearly as nice a fit as the new way though. Hopefully I can work through this one. Thanks for any thoughts or ideas. Mark Stauffer 601XL Still messing with the canopy Odenton, MD August 2&3 Jabiru Class Do not archive ________________________________ Message 25 ____________________________________ Time: 06:38:50 PM PST US From: "Chuck Deiterich" Subject: Re: Zenith-List: Re: Tail Tie Down 701 --> Zenith-List message posted by: "Chuck Deiterich" Roger's 701 (from ZAC) has an eyebolt for the rear tie down, as does mine. Chuck D. N701TX ----- Original Message ----- From: Subject: Zenith-List: Re: Tail Tie Down 701 > --> Zenith-List message posted by: RURUNY@aol.com > > > Jim, > > I was thinking about beefing this up and installing an eyebolt there in the > future but > I went with the Zenith design because it is basically the toughest thing in > the rear tail area. The longerons and skin its attached to isn't exactly the > most robust thing > I've ever seen. Without beefing up the whole tail area, I don't know if it > would be worth it. > I'm not flying mine yet so take this for what its worth. > > Brian > > ________________________________ Message 26 ____________________________________ Time: 10:11:31 PM PST US From: "Leo Gates" Subject: Re: Zenith-List: She's Airworthy! - and fuel tank vent question --> Zenith-List message posted by: "Leo Gates" Rather than file my vent tubes and give me place to scrape my bald head, I slipped on a 2" length of rubber fuel line cut to a 45 degree angle on the bottom. Much easier on my head. Leo Gates N601Z -------Original Message------- From: zenith-list@matronics.com Subject: Zenith-List: She's Airworthy! - and fuel tank vent question --> Zenith-List message posted by: "Paul Hartl" Hi all, My DAR had a question about the fuel vent on the ZAC-supplied leading edge tank, and wondered if it should be shorter, or perhaps terminated differently, in order to avoid a low pressure condition that could suck fuel. Mine is cut off flat (parallel to the underside of the wing) and protrudes 16 mm down from the wing bottom. Any comments? Thanks! Paul