---------------------------------------------------------- Zenith-List Digest Archive --- Total Messages Posted Thu 05/31/07: 10 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 04:20 AM - Re: Corvair/Zenith engine mounts (rroberts) 2. 05:31 AM - LSA Speed Limit (Paul Mulwitz) 3. 05:43 AM - Re: Main gear axle drilling guide (Robin Bellach) 4. 06:57 AM - Re: Main gear axle drilling guide (Dennis Shoup) 5. 10:16 AM - Flap Actuator Mount question (John Davis) 6. 11:44 AM - Re: Rotax912ULS/ZodiacXL - selection of propeller??? (Martin Pohl) 7. 12:02 PM - Re: Flap Actuator Mount question (DaveG601XL) 8. 05:45 PM - Re: Flap Actuator Mount question () 9. 06:44 PM - Re: 701 elevator cable.Weird problem (billmileski) 10. 09:25 PM - Re: Corvair/Zenith engine mounts (Gary Boothe) ________________________________ Message 1 _____________________________________ Time: 04:20:59 AM PST US Subject: Zenith-List: Re: Corvair/Zenith engine mounts From: "rroberts" Guys, HomebuiltHelp.com has a good video that may answer you questions: The "912 Competition". It covers the Sub, AeroVee, Corvair, Rotec, Jab, Suzuki, and Great Plains VW. Worth a look-see for sure! -------- Low & Slow Rick www.n701rr.com Read this topic online here: http://forums.matronics.com/viewtopic.php?p=115732#115732 ________________________________ Message 2 _____________________________________ Time: 05:31:31 AM PST US From: Paul Mulwitz Subject: Zenith-List: LSA Speed Limit There has been a lot of discussion about the speed limit of LSA. There have been so many incomplete or misleading definitions used that I wanted to make this issue clear. I finally managed to get the FAA regulation site to work and copied the definition: "A maximum airspeed in level flight with maximum continuous power (VH) of not more than 120 knots CAS under standard atmospheric conditions at sea level." There are several qualifications of the 120 Knot (138 MPH) limit for an airplane to qualify as LSA. 1. Level flight. 2. Maximum Continuous Power. This is NOT MAXIMUM POWER. Maximum Continuous Power is defined by the builder and/or engine manufacturer. 3. CAS, Calibrated Airspeed - roughly equivalent to IAS - Indicated Airspeed. Note that this is not TAS or True Airspeed. Since the maximum speed is defined as Indicated rather than True that means True airspeed will certainly be higher when the plane is flown at altitude and cooler air temperatures. 4. Standard atmospheric conditions at sea level. This is more details about how to measure the airspeed. The bottom line is there is no speed limit for LSA for time periods when power over Maximum Continuous Power is used. Also, the True airspeed for a plane flown at normal cruise altitudes and temperatures is considerably higher than the 120 Kts Indicated airspeed allowed. Paul XL fuselage ________________________________ Message 3 _____________________________________ Time: 05:43:59 AM PST US From: "Robin Bellach" <601zv@ritternet.com> Subject: Re: Zenith-List: Main gear axle drilling guide Tim (or any one else that may be needing it), Let me know if you haven't located one. I bought one at last year's ZAC Open House, but don't need it as my Grove gear is pre-drilled for the axles. It might take me a day or two to find it since it wasn't where I thought it was this morning. Robin in AR 601XL Zen-Vair, N601ZV reserved ----- Original Message ----- From: "Tim Juhl" > I seem to recall that at one time there was a main gear axle drilling > guide that was being passed around. I'd gladly pay shipping both ways to > borrow one. > ________________________________ Message 4 _____________________________________ Time: 06:57:06 AM PST US From: "Dennis Shoup" Subject: Re: Zenith-List: Main gear axle drilling guide Check the attached link for a drilling guide for $15 plus shipping. http://www.kobushweldingandmachining.com/aircraft%20tools.htm Dennis On 5/30/07, Tim Juhl wrote: > > > I seem to recall that at one time there was a main gear axle drilling > guide that was being passed around. I'd gladly pay shipping both ways to > borrow one. > > Thanks! > > Tim > > -------- > DO NOT ARCHIVE > ______________ > CFII > Champ L16A flying > Zodiac XL - Jabiru 3300A > Working on wings > > > Read this topic online here: > > http://forums.matronics.com/viewtopic.php?p=115699#115699 > > ________________________________ Message 5 _____________________________________ Time: 10:16:25 AM PST US From: John Davis Subject: Zenith-List: Flap Actuator Mount question Hi, I have a 601XL quickbuild which has come with a newer Flap actuator than the mount (6B19-10) was designed for, in particular the width of the tabs on the mount through which the actuator itself bolts is much bigger than the new actuator needs. Can I use the current mount (which is already in place) and use spacers on the longer bolt between the edges of the flap actuator and the mount to keep it from moving horizontally or should I really replace the mount with the proper one. Oddly enough the kit did come with the proper one loose but the one thats installed has the wider spacing. Thoughts ? Thanks, John Davis Burnsville, NC 601XL QB - Jab 3300 ________________________________ Message 6 _____________________________________ Time: 11:44:00 AM PST US Subject: Zenith-List: Re: Rotax912ULS/ZodiacXL - selection of propeller??? From: "Martin Pohl" Check out this prop (which is already available for the Jabiru and will hopefully be available for the Rotax in time...): Constant speed prop without controls in the cockpit - perhaps that would even comply with LSA??? I will have a closer look at this prop for sure!!! Cheers Martin -------- Martin Pohl Zodiac XL QBK 8645 Jona, Switzerland www.pohltec.ch/ZodiacXL Read this topic online here: http://forums.matronics.com/viewtopic.php?p=115797#115797 ________________________________ Message 7 _____________________________________ Time: 12:02:38 PM PST US Subject: Zenith-List: Re: Flap Actuator Mount question From: "DaveG601XL" Personally it would not bother me a bit if the space you needed to take up was only a few washers worth. Ask your Tech Counselor or ZAC. I have the new actuator and bracket so I don't know how wide the original was. Good Luck. -------- David Gallagher 601 XL, tail and wings completed, working on fueslage. Read this topic online here: http://forums.matronics.com/viewtopic.php?p=115802#115802 ________________________________ Message 8 _____________________________________ Time: 05:45:18 PM PST US From: Subject: Re: Zenith-List: Flap Actuator Mount question My guess is that you should use the loose proper fitting one. Have you contacted the factory about it yet? Dred Do Not Archive ---- John Davis wrote: > > Hi, > > I have a 601XL quickbuild which has come with a newer Flap actuator than > the mount (6B19-10) was designed for, in particular the width of the > tabs on the mount through which the actuator itself bolts is much bigger > than the new actuator needs. > > Can I use the current mount (which is already in place) and use spacers > on the longer bolt between the edges of the flap actuator and the mount > to keep it from moving horizontally or should I really replace the mount > with the proper one. Oddly enough the kit did come with the proper one > loose but the one thats installed has the wider spacing. > > Thoughts ? > > Thanks, > John Davis > Burnsville, NC > > 601XL QB - Jab 3300 > > > > > ________________________________ Message 9 _____________________________________ Time: 06:44:46 PM PST US Subject: Zenith-List: Re: 701 elevator cable.Weird problem From: "billmileski" Ralph, I have seen CZAW 701s in which they moved the lower hole of the elevator control horn (inside fuse) up a fraction of a cm to avoid the lower cable rubbing along the fuse channel just aft of the control horn. Unless the lower hole position on the elevator itself is relocated similarly, this will make the tension increase more dramatic with aileron deflection. And you might want to consider measuring your tensions because significant springback in my case meant like an increase to 40-50 pounds per cable. Bill jetboy wrote: > I think that website fix is for the 601? > > The 701 is quite different. Mine has this problem also. It was assembled and rigged by CZAW so it arrived to me with elevator cable tension just applying at stick neural position, and springback effect if the aileron is held over to the right. This is a niusance as its hard to push owtwards with ones arm, flying from the left seat. the bungee installed in the location shown has no influence on this. I was cosidering applying another bungee much closer to the control end of the cables, to add bias tension to the other cable, but i trialled doing this by hand and wasnt convinced it would correct the issue. > > I enquired to ZAC but got no response, I am following this up again now. > > I feel that if the elevator control horn that the cables connect to was folded to the left so that the cable holes were in line with the aileron tube centreline, the tension would only increase, both directions of stick travel. This mod might require two bends about 5 degress, each about 1" either side out of the centreline of the horn? > > My concern is that doing this might render the horn more prone to collapse under overload, because it would have less strength from being bent by the slight sideways loads that would now occur, however these loads probably already exist while the aileron is over to the left or right anyway? > > We just need the OK from the factory, as to whether there is a reason for it to be this way. Its not much fun taxying out with left down aileron and wind behind the tail, causes the stick to shake around as the elevator wobbles (read flutter) against the loose cables. > > Ralph Read this topic online here: http://forums.matronics.com/viewtopic.php?p=115864#115864 ________________________________ Message 10 ____________________________________ Time: 09:25:17 PM PST US From: "Gary Boothe" Subject: RE: Zenith-List: Corvair/Zenith engine mounts Ben, Please note that you hi-jacked Bill's "Subject" about engine mounts. Your questions will be lost in the List if you do not change your Subject, and Bill's answers will be diluted by a different subject matter. Gary Boothe Cool, CA 601 HDSTD, WW Conversion 90% done, Tail done, wings done, working on c-section _____ From: owner-zenith-list-server@matronics.com [mailto:owner-zenith-list-server@matronics.com] On Behalf Of Ben Ramler Sent: Wednesday, May 30, 2007 5:00 PM Subject: Re: Zenith-List: Corvair/Zenith engine mounts that to brings me to my next question in the 701's is anyone even running corvair? I'm sitting on a corvair engine and it would be nice to use it. Ben 701 wanna-be ----- Original Message ---- From: Bill Naumuk Sent: Wednesday, May 30, 2007 5:49:11 PM Subject: Zenith-List: Corvair/Zenith engine mounts Corvair people- I'm to the point where I have to remove the short bolts already tack welded into the firewall engine mounts, and need to know the least destructive way of getting rid of the old ones. Do I have to beef up the existing parts, or should I even go so far as to make new ones? Bill Naumuk HDS Fuse/Corvair Townville, Pa ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message zenith-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/Zenith-List.htm Web Forum Interface To Lists http://forums.matronics.com Matronics List Wiki http://wiki.matronics.com Full Archive Search Engine http://www.matronics.com/search 7-Day List Browse http://www.matronics.com/browse/zenith-list Browse Digests http://www.matronics.com/digest/zenith-list Browse Other Lists http://www.matronics.com/browse Live Online Chat! http://www.matronics.com/chat Archive Downloading http://www.matronics.com/archives Photo Share http://www.matronics.com/photoshare Other Email Lists http://www.matronics.com/emaillists Contributions http://www.matronics.com/contribution ------------------------------------------------------------------------------------- These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.