---------------------------------------------------------- Zenith-List Digest Archive --- Total Messages Posted Tue 11/15/05: 14 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 12:50 AM - Re: Coolant temp and NPG+ (Thilo Kind) 2. 04:26 AM - Coolant temp and NPG+ (Grant Corriveau) 3. 04:44 AM - 701 Info (Bill Pagan) 4. 06:38 AM - Re: Zenith-List Digest: 17 Msgs - 11/14/05 (john butterfield) 5. 07:53 AM - Re: Re: Zenith-List Digest: 17 Msgs - 11/14/05 (Bill Denton) 6. 08:20 AM - Rotax 912 (Tim Perkins) 7. 09:48 AM - Re: 701 Info (RURUNY@AOL.COM) 8. 11:35 AM - Re: Coolant temp and NPG+ (Mike Sinclair) 9. 12:32 PM - Re: Rotax 912 (Johann G.) 10. 12:40 PM - Re: First Flight of N3577H (Beckman, Rick) 11. 02:09 PM - EA-81 MOTOR MOUNT () 12. 02:24 PM - Re: Rotax 912 (ivor.phillips) 13. 02:51 PM - Re: Rotax 912 (JERICKSON03E@aol.com) 14. 04:35 PM - Re: auto pilot servo placements (Lance Gingell) ________________________________ Message 1 _____________________________________ Time: 12:50:01 AM PST US From: "Thilo Kind" Subject: Re: Zenith-List: Coolant temp and NPG+ --> Zenith-List message posted by: "Thilo Kind" Hi folks, I'm using 50:50 in my Rotax 912 / CH601 HDS. Oil and water rad are inside the cowling. Oil runs typically around 200 F (need to block the oil cooler partially during winter operations). Coolant runs around 130 F in cruise and up to 220 F during taxiing and long climb outs in hot days. I replaced the overflow tank bottle (too flimsy) with a overflow tank from some car. Key to low temps is the airflow through the rads - requires baffeling to and from the rads, when installed underneath the cowling. A huge impact has the lip in front of the bottom opening in the lower cowling. This lip creates the low pressure and thus allows the hot air to escape through the bottom opening. Happy flying Thilo Kind > --- Ursprngliche Nachricht --- > Von: Mike Sinclair > An: zenith-list@matronics.com > Betreff: Re: Zenith-List: Coolant temp and NPG+ > Datum: Mon, 14 Nov 2005 18:20:46 -0600 > > --> Zenith-List message posted by: Mike Sinclair > > I've had some concerns about this as well, especially since I just bought > a new 912S that had a label on the reservoir saying not to use any water > in the system and to use only the Evans coolant. Phil Lockwood told me 3 > weeks ago that either 50/50 or Evans could be used, so to confirm I called > him back today. He told me that it wasn't a warranty issue and that either > could be used. The main thing to watch out for is that with 50/50, the > temperature should not exceed 248f. If it does then the system should be > drained and the coolant replaced with the Evans. My 912UL typically ran > around 210 on both the oil and coolent temps and since the 912ULS tends to > run hotter, along with the expected higher temps from the Evans, I'm going > to first try the 50/50. I'm also installing a different oil cooler bought > >from Lockwood, that Phil says should lower the oil temp about 20 degrees, > and therefore the coolant temp should be a little lower also. The new oil > cooler will require a modification to the lower cowl, but fiberglass is > pretty easy to work. If anyone on the list has had other experiences along > these lines I would sure be interested in hearing them. I'm probably 1-2 > months from an engine start, so still have time to change my mind. And to > do a little more research! If I do continue on this path I will post > results. > > Mike Sinclair N701TD > > Trevor Page wrote: > > > --> Zenith-List message posted by: Trevor Page > > > > Grant, the boiling temp of NPG+ is 375F!! I monitor my coolant > > temps but I don't rely or worry about them. The hottest I've seen it > > go is 182F, the norm being 169-180 depending on outside temps. My > > CHTs (more important) run 230-260 on front-rear. > > > > For me the Evans has cured my boiling problem of plain 50/50 glycol > > mixtures and stabilized my temps across the board. The only > > discrepancy I have is my engine being older has the oil temps being > > read by the front oil banjo bolt location on the bottom of the engine > > which reads a bit higher since the oil has circulated in the heads. > > Newer engines read the oil temps at the oil pump after going through > > the cooling rad. My oil runs 245F on hot days, recently they've been > > 220 or so. If it gets colder I'll have to tape off the rad a bit. > > > > Trev Page > > C-IDUS 601HD R912 > > > > On Nov 14, 2005, at 3:19 AM, Grant Corriveau wrote: > > > > > --> Zenith-List message posted by: Grant Corriveau > > > > > > > > >> Has anyone switched to Evans NPG+ waterless coolant?... > > > ------- > > >> Hello fellow builders: I am starting to program my Grand Rapids > > >> EIS for my > > >> Rotax 912S and was wondering what temperature range to use for > > >> the coolant. > > >> To my amazement, the Rotax operators manual does not even give a > > >> max temp for > > > ... > > > > > > Have you guys checked the Rotax Notams (available on their websites) > > > regarding NPG+ coolant? Some models of Rotax now require its use. > > > Coolant > > > temp and CHT limits are specified there as I recall. > > > > > > Also, what's the problem with coolant temps of 240F after switching > > > to NPG+? > > > The boiling point of this stuff is well over 300F as I recall. All > > > the > > > concerns about coolant staying below 210-220 have to do with the > > > boiling > > > temp of water with previous coolant mixtures, don't they? > > > > > > Curious > > > -- > > > Grant Corriveau > > > C-GHTF / HDS / CAM100 > > > > > > > > > > > > > > -- Highspeed-Freiheit. Bei GMX supergnstig, z.B. GMX DSL_Cityflat, DSL-Flatrate fr nur 4,99 Euro/Monat* http://www.gmx.net/de/go/dsl ________________________________ Message 2 _____________________________________ Time: 04:26:00 AM PST US Subject: Zenith-List: Coolant temp and NPG+ From: Grant Corriveau --> Zenith-List message posted by: Grant Corriveau Mike, If you go to the Rotax website, you'll find the entire Directive straight from the manufacturer. As I recall it IS a requirement for some models of Rotax and optional on others, as you say. Personally, I'm trying to find out if there's any 'cons' to switching to the NPG+ (besides perhaps the cost. All I can see are 'pros' ... The only time I've had coolant temp issues with the 50/50 is when I've operated on extremely hot days (30C+), doing touch and goes or long taxiis or short turn-arounds between flights. With the NPG+ these issues should be completely resolved. I think it would be a very liberating operation to have the coolant temps running around 200-220, knowing that the limit with respect to the actual CHT/metal of the engine is significantly higher. As we all know, the 220 limit with 50/50 coolant is not so much the engine itself, but rather to avoid the liquid from boiling inside the engine (in hot localized spots especially), and causing damage. For those who've mentioned the 'pancakes cooking' smell ... did that disappear after a while or is it permanent? -- Grant Corriveau C-GHTF / HDS / CAM100 > --> Zenith-List message posted by: Mike Sinclair > > I've had some concerns about this as well, especially since I just bought > a new 912S that had a label on the reservoir saying not to use any water > in the system and to use only the Evans coolant. Phil Lockwood told me 3 > weeks ago that either 50/50 or Evans could be used, so to confirm I called > him back today. He told me that it wasn't a warranty issue and that either > could be used. The main thing to watch out for is that with 50/50, the > temperature should not exceed 248f. ________________________________ Message 3 _____________________________________ Time: 04:44:59 AM PST US From: Bill Pagan Subject: Zenith-List: 701 Info --> Zenith-List message posted by: Bill Pagan Hello All, Been lurking for a while and considering a 701. I've previously built an RV-8A you can see here http://www.geocities.com/CapeCanaveral/Launchpad/9749/william.html Was interested in the real cost of getting the plane airborne. The RV with a basic VFR panel and O-320 Lycoming, Senseich fixed pitch prop came in at about $48K including tools (about $3K). Any input on what it's actually costing would be greatly appreciated. I'm looking at a basic VFR plane with the Rotax 100 hp. Bill __________________________________ http://farechase.yahoo.com ________________________________ Message 4 _____________________________________ Time: 06:38:30 AM PST US From: john butterfield Subject: Zenith-List: Re: Zenith-List Digest: 17 Msgs - 11/14/05 --> Zenith-List message posted by: john butterfield hi list My questions about the installation of the auto pilot servo's is for the 601 XL, thanks john butterfield --- Zenith-List Digest Server wrote: > * > > ================================================== > Online Versions of Today's List Digest Archive > ================================================== > > Today's complete Zenith-List Digest can also be > found in either of the > two Web Links listed below. The .html file includes > the Digest formatted > in HTML for viewing with a web browser and features > Hyperlinked Indexes > and Message Navigation. The .txt file includes the > plain ASCII version > of the Zenith-List Digest and can be viewed with a > generic text editor > such as Notepad or with a web browser. > > HTML Version: > > > http://www.matronics.com/digest/zenith-list/Digest.Zenith-List.2005-11-14.html > > Text Version: > > > http://www.matronics.com/digest/zenith-list/Digest.Zenith-List.2005-11-14.txt > > > ================================================ > EMail Version of Today's List Digest Archive > ================================================ > > > > > Zenith-List Digest > Archive > --- > Total Messages Posted Mon > 11/14/05: 17 > > > > > Today's Message Index: > ---------------------- > > 1. 12:00 AM - Re: Rotax 912S coolant temps > (Richard McLachlan) > 2. 12:14 AM - Comments... (Matt Dralle) > 3. 12:23 AM - Coolant temp and NPG+ (Grant > Corriveau) > 4. 04:28 AM - Re: Coolant temp and NPG+ > (Trevor Page) > 5. 05:56 AM - Re: Fuselage access door (Rodney > Mills) > 6. 06:32 AM - Little solid rivets PLUS I'm back > to work onn N601WR (Gig Giacona) > 7. 07:07 AM - Re: any form blocks for sale? > (Larry McFarland) > 8. 07:15 AM - Announcement: Zenair 601XL > Private Pilot Course (jim) > 9. 07:45 AM - Re: Little solid rivets PLUS I'm > back to work onn N601WR (Rick) > 10. 11:45 AM - auto pilot servo placements > (john butterfield) > 11. 11:57 AM - Custom cowl and radiator > combination (Ron &Phyliss) > 12. 12:46 PM - Re: auto pilot servo placements > (Mike Fothergill) > 13. 01:04 PM - Re: auto pilot servo placements > (Craig Payne) > 14. 04:22 PM - Re: Coolant temp and NPG+ (Mike > Sinclair) > 15. 05:34 PM - Re: auto pilot servo placements > (Mike Fothergill) > 16. 07:00 PM - Primingarchermj@swbell.net (Matt > & Jo) > 17. 07:36 PM - any ch701 form blocks for sale > (Evan Lewis) > > > > ________________________________ Message 1 > _____________________________________ > > > Time: 12:00:58 AM PST US > From: "Richard McLachlan" > Subject: Re: Zenith-List: Rotax 912S coolant temps > > --> Zenith-List message posted by: "Richard > McLachlan" > > Mine runs from a minimum after warm up of approx 80 > deg C on a long descent > to a max of 115 deg C on a climb on a hot day. We > use 50% water glycol mix. > > ----- Original Message ----- > From: > Subject: Zenith-List: Rotax 912S coolant temps > > > > --> Zenith-List message posted by: > MElrod3732@aol.com > > > > Hello fellow builders: I am starting to program my > Grand Rapids EIS for my > > Rotax 912S and was wondering what temperature > range to use for the > coolant. > > To my amazement, the Rotax operators manual does > not even give a max temp > for > > the coolant. > > > > Thanks in advance, > > Mike Elrod 701 95% complete > > > > > > > > > > > ________________________________ Message 2 > _____________________________________ > > > Time: 12:14:14 AM PST US > From: Matt Dralle > Subject: Zenith-List: Comments... > > --> Zenith-List message posted by: Matt Dralle > > > > Dear Listers, > > I'd like say thank you to everyone that has already > made a Contribution during > this year's List Fund Raiser! If you haven't made > your List Contribution yet, > please show your support for these valuable > services. Since there's no advertising > or other forms of direct commercialism on these > forums, its solely YOUR > GENEROSITY that keeps them running!! > > Members have continued to include some very nice > comments along with their Contributions > this year. Please take a minute to read over some > of the thoughts your > fellow Listers have expressed regarding the Lists > and what they mean to them. > What do the Lists mean to you...? > > Please make a Contribution to support the Lists > here: > > http://www.matronics.com/contribution > > Thank you! > > Matt Dralle > Matronics Email List Admin > > > ==================== What Listers Are Saying - Vol > II ==================== > > The best investment I make all year! > Owen B. > > This service is an amazing tool for the builder. I > can > ask a question and have 2,3 or more answers or > suggestions, > sometimes within minutes! > Wallace H. > > Well worth it > Jeff H. > > ...connecting all these nice people from all over > the > world, who share the same passion: Building and > flying > aircraft. > Johann G. > > Did get a lot of info and tips by just reading the > messages... > Henkjan V. > > Great complement to my "Full Time" effort building. > Paul M. > > === message truncated === ________________________________ Message 5 _____________________________________ Time: 07:53:22 AM PST US From: "Bill Denton" Subject: RE: Zenith-List: Re: Zenith-List Digest: 17 Msgs - 11/14/05 --> Zenith-List message posted by: "Bill Denton" You might want to take a look at: http://www.trutrakflightsystems.com/documents/ZodiacPitchandRoll.pdf A different vendor, but I'm sure there's not much difference in the servos... -----Original Message----- From: owner-zenith-list-server@matronics.com [mailto:owner-zenith-list-server@matronics.com]On Behalf Of john butterfield Subject: Zenith-List: Re: Zenith-List Digest: 17 Msgs - 11/14/05 --> Zenith-List message posted by: john butterfield hi list My questions about the installation of the auto pilot servo's is for the 601 XL, thanks john butterfield --- Zenith-List Digest Server wrote: > * > > ================================================== > Online Versions of Today's List Digest Archive > ================================================== > > Today's complete Zenith-List Digest can also be > found in either of the > two Web Links listed below. The .html file includes > the Digest formatted > in HTML for viewing with a web browser and features > Hyperlinked Indexes > and Message Navigation. The .txt file includes the > plain ASCII version > of the Zenith-List Digest and can be viewed with a > generic text editor > such as Notepad or with a web browser. > > HTML Version: > > http://www.matronics.com/digest/zenith-list/Digest.Zenith-List.2005-11-14.ht ml > > Text Version: > > http://www.matronics.com/digest/zenith-list/Digest.Zenith-List.2005-11-14.tx t > > > ================================================ > EMail Version of Today's List Digest Archive > ================================================ > > > Zenith-List Digest > Archive > --- > Total Messages Posted Mon > 11/14/05: 17 > > > Today's Message Index: > ---------------------- > > 1. 12:00 AM - Re: Rotax 912S coolant temps > (Richard McLachlan) > 2. 12:14 AM - Comments... (Matt Dralle) > 3. 12:23 AM - Coolant temp and NPG+ (Grant > Corriveau) > 4. 04:28 AM - Re: Coolant temp and NPG+ > (Trevor Page) > 5. 05:56 AM - Re: Fuselage access door (Rodney > Mills) > 6. 06:32 AM - Little solid rivets PLUS I'm back > to work onn N601WR (Gig Giacona) > 7. 07:07 AM - Re: any form blocks for sale? > (Larry McFarland) > 8. 07:15 AM - Announcement: Zenair 601XL > Private Pilot Course (jim) > 9. 07:45 AM - Re: Little solid rivets PLUS I'm > back to work onn N601WR (Rick) > 10. 11:45 AM - auto pilot servo placements > (john butterfield) > 11. 11:57 AM - Custom cowl and radiator > combination (Ron &Phyliss) > 12. 12:46 PM - Re: auto pilot servo placements > (Mike Fothergill) > 13. 01:04 PM - Re: auto pilot servo placements > (Craig Payne) > 14. 04:22 PM - Re: Coolant temp and NPG+ (Mike > Sinclair) > 15. 05:34 PM - Re: auto pilot servo placements > (Mike Fothergill) > 16. 07:00 PM - Primingarchermj@swbell.net (Matt > & Jo) > 17. 07:36 PM - any ch701 form blocks for sale > (Evan Lewis) > > > ________________________________ Message 1 > _____________________________________ > > > Time: 12:00:58 AM PST US > From: "Richard McLachlan" > Subject: Re: Zenith-List: Rotax 912S coolant temps > > --> Zenith-List message posted by: "Richard > McLachlan" > > Mine runs from a minimum after warm up of approx 80 > deg C on a long descent > to a max of 115 deg C on a climb on a hot day. We > use 50% water glycol mix. > > ----- Original Message ----- > From: > Subject: Zenith-List: Rotax 912S coolant temps > > > > --> Zenith-List message posted by: > MElrod3732@aol.com > > > > Hello fellow builders: I am starting to program my > Grand Rapids EIS for my > > Rotax 912S and was wondering what temperature > range to use for the > coolant. > > To my amazement, the Rotax operators manual does > not even give a max temp > for > > the coolant. > > > > Thanks in advance, > > Mike Elrod 701 95% complete > > > > > > > ________________________________ Message 2 > _____________________________________ > > > Time: 12:14:14 AM PST US > From: Matt Dralle > Subject: Zenith-List: Comments... > > --> Zenith-List message posted by: Matt Dralle > > > > Dear Listers, > > I'd like say thank you to everyone that has already > made a Contribution during > this year's List Fund Raiser! If you haven't made > your List Contribution yet, > please show your support for these valuable > services. Since there's no advertising > or other forms of direct commercialism on these > forums, its solely YOUR > GENEROSITY that keeps them running!! > > Members have continued to include some very nice > comments along with their Contributions > this year. Please take a minute to read over some > of the thoughts your > fellow Listers have expressed regarding the Lists > and what they mean to them. > What do the Lists mean to you...? > > Please make a Contribution to support the Lists > here: > > http://www.matronics.com/contribution > > Thank you! > > Matt Dralle > Matronics Email List Admin > > > ==================== What Listers Are Saying - Vol > II ==================== > > The best investment I make all year! > Owen B. > > This service is an amazing tool for the builder. I > can > ask a question and have 2,3 or more answers or > suggestions, > sometimes within minutes! > Wallace H. > > Well worth it > Jeff H. > > ...connecting all these nice people from all over > the > world, who share the same passion: Building and > flying > aircraft. > Johann G. > > Did get a lot of info and tips by just reading the > messages... > Henkjan V. > > Great complement to my "Full Time" effort building. > Paul M. > > === message truncated === ________________________________ Message 6 _____________________________________ Time: 08:20:56 AM PST US From: "Tim Perkins" Subject: Zenith-List: Rotax 912 --> Zenith-List message posted by: "Tim Perkins" Has anyone tried or heard anything about the 912Xtra piston kit http://www.craftworks.biz/pistonsite/ or the pistons being offered by Rotax King? http://www.rotaxking.com/ ? Tim Perkins ________________________________ Message 7 _____________________________________ Time: 09:48:03 AM PST US From: RURUNY@AOL.COM Subject: Zenith-List: Re: 701 Info --> Zenith-List message posted by: RURUNY@aol.com Bill, That is/was an awesome looking RV8. You are doing the opposite of what I want to do that is finish the 701 and then build an RV8. The costs: Rudder workshop- $300 not including travel and hotel. But you get the rudder out of this deal and some building experience( which you will probably not need). Complete Kit , Firewall fwd, options- 20,000 Options: aux tanks, electric trim, nav/strobe, cabin heat, and I ordered some clecoes and the riveters at this time, instrument pkg. Rotax 912- 12,000 Alodine, Z Chromate, nutplates and hardware not included, paints, wire and electrical accesories, uhmw plastics-1500 mistake parts-300 dynon d10, gtx327, icomA200, intercom, grt eis, skyshop interior, ray allen grips-$$$$$ I'm probably in 35,000 and not finished yet not including the last items. Don't get me wrong, this can be done cheaper!!! I just got a little carried away. Brian Long Island, NY _http://tinyurl.com/8xtqq_ (http://tinyurl.com/8xtqq) ________________________________ Message 8 _____________________________________ Time: 11:35:57 AM PST US From: Mike Sinclair Subject: Re: Zenith-List: Coolant temp and NPG+ --> Zenith-List message posted by: Mike Sinclair Grant Thanks for the input. I did a little reading on the website and found this in section 11.6 of the 912S install PDF, "Depending on the installation conditions, conventional coolants can also be used. The provision of proof about the max. reachable head temperature and thus the coolant to be used is the responsibility of the airplane manufacturer". The warning sticker provided with the engine is to be affixed to the expansion tank cap if it is determined that the Evans coolant is to be used. Since per the manual the max. oil temperature is 266F (130C), it seems to me that the 300F+ boiling point of the Evans coolant is somewhat besides the point, because if your water temp reaches that range, you have probably also exceeded the max temp of the oil. So I guess for now I'm going to try going with the new oil cooler (which correspondingly should also help keep the coolant cooler) and the 50/50 coolant and hopefully I can get my temps fairly close to what I was getting with the 912UL. By the way, Phil Lockwood also recommended using Havoline Dexcool and said that is what they are using in their engines. Will see how it goes early next year. Mike Sinclair N701TD > > If you go to the Rotax website, you'll find the entire Directive straight > from the manufacturer. As I recall it IS a requirement for some models of > Rotax and optional on others, as you say. > > Personally, I'm trying to find out if there's any 'cons' to switching to the > NPG+ (besides perhaps the cost. All I can see are 'pros' ... The only time > I've had coolant temp issues with the 50/50 is when I've operated on > extremely hot days (30C+), doing touch and goes or long taxiis or short > turn-arounds between flights. With the NPG+ these issues should be > completely resolved. I think it would be a very liberating operation to > have the coolant temps running around 200-220, knowing that the limit with > respect to the actual CHT/metal of the engine is significantly higher. As > we all know, the 220 limit with 50/50 coolant is not so much the engine > itself, but rather to avoid the liquid from boiling inside the engine (in > hot localized spots especially), and causing damage. > -- > Grant Corriveau > C-GHTF / HDS / CAM100 > > > I've had some concerns about this as well, especially since I just bought > > a new 912S that had a label on the reservoir saying not to use any water > > in the system and to use only the Evans coolant. Phil Lockwood told me 3 > > weeks ago that either 50/50 or Evans could be used, so to confirm I called > > him back today. He told me that it wasn't a warranty issue and that either > > could be used. The main thing to watch out for is that with 50/50, the > > temperature should not exceed 248f. ________________________________ Message 9 _____________________________________ Time: 12:32:42 PM PST US From: "Johann G." Subject: Re: Zenith-List: Rotax 912 --> Zenith-List message posted by: "Johann G." Hello Tim and list members. This upgrade kit for the Rotax 912 UL is very interesting. I do not see any use for this extra hp for my plane, but I was curious to see how the upgrade was performed and opened up the link to the installation manual. When I saw the picture of the heads on picture # three under instruction 7. http://www.craftworks.biz/pistonsite/6318.htm I was very surprised to see the cap nuts on the heads on the outside of the valve cover. i.e. on the top. This is exactly how the nuts were installed on my engine and yet I had experianced an oil leak through the lower standard nuts on the inside of the valve covers. Does this mean that this is the correct way to bolt the heads on? Is my engine any different than the standard 912 UL engine? Why did my engine leak and not the engine on the picture? Can anyone explain this to me? Thank you, Johann G. Tim Perkins wrote: >--> Zenith-List message posted by: "Tim Perkins" > >Has anyone tried or heard anything about the 912Xtra piston kit >http://www.craftworks.biz/pistonsite/ or the pistons being offered by Rotax >King? http://www.rotaxking.com/ ? > >Tim Perkins > > > > ________________________________ Message 10 ____________________________________ Time: 12:40:02 PM PST US Subject: RE: Zenith-List: First Flight of N3577H From: "Beckman, Rick" --> Zenith-List message posted by: "Beckman, Rick" --> Zenith-List message posted by: Rico Voss On behalf of the builder, I'm pleased to announce the maiden flight of N3577H, a scratch-build HD created by Mr. Ray Huffman of Kansas City. Tio Ricardito Please tell Mr. Huffman I said " Good job!!". The Flying Miata with the "Junkyard Engine" finally is airborne!! Paint 'er Red and let's get high!!! Congratulations, Ray!! Rick Beckman Zodie Rocket XL Soon to be: 52EB from: Midwest Mudworks 729 MSL and sinking www.sharbo.us/thebird ________________________________ Message 11 ____________________________________ Time: 02:09:45 PM PST US From: Subject: Zenith-List: EA-81 MOTOR MOUNT --> Zenith-List message posted by: I have a Reductions Conversions motor mount for my EA-81 Subaru with no instruction's and it appears that something is missing. Does anyone have close-up pictures or instructions to share? Thanks Bob Tichy ________________________________ Message 12 ____________________________________ Time: 02:24:27 PM PST US From: "ivor.phillips" Subject: Re: Zenith-List: Rotax 912 --> Zenith-List message posted by: "ivor.phillips" Have just checked My New 914 and the conventional cylinder head nuts are outside the rocker boxes with the cap nuts inside, Ivor Phillips Europa XS > I was very surprised to see the cap nuts on the heads on the outside of > the valve cover. i.e. on the top. > This is exactly how the nuts were installed on my engine and yet I had > experianced an oil leak through the lower standard nuts on the inside of > the valve covers. Does this mean that this is the correct way to bolt > the heads on? > Is my engine any different than the standard 912 UL engine? Why did my > engine leak and not the engine on the picture? > Can anyone explain this to me? ________________________________ Message 13 ____________________________________ Time: 02:51:28 PM PST US From: JERICKSON03E@aol.com Subject: Re: Zenith-List: Rotax 912 --> Zenith-List message posted by: JERICKSON03E@aol.com In a message dated 11/15/2005 3:14:21 PM Central Standard Time, johann@gi.is writes: This is exactly how the nuts were installed on my engine and yet I had experianced an oil leak through the lower standard nuts on the inside of the valve covers. Does this mean that this is the correct way to bolt the heads on? Is my engine any different than the standard 912 UL engine? Why did my engine leak and not the engine on the picture? Can anyone explain this to me? Johann, My guess is that if the non cap nuts are on the inside, the leak path is there. But, they might have used cap nuts at all sixteen places,, or,, they might have used locktite to seal the threads. The assy shows oil to lubricate the nut to stud. We do not know if the engine in the picture leaks or not. If the cap nuts are incorrectly installed, a QC review of the assembly would be useful. Happy flying. Jerry ________________________________ Message 14 ____________________________________ Time: 04:35:19 PM PST US Subject: RE: Zenith-List: auto pilot servo placements From: "Lance Gingell" --> Zenith-List message posted by: "Lance Gingell" John, I have a Trutrak Digitrak (single axis). Its GREAT. Installation was really quick & easy. Unfortunately I don't have a pic in my log (wierd - thought I did!). I mounted it behind the passenger seat, aft of the control horn, similar to the trutrak instructions here: http://www.trutrakflightsystems.com/documents/ZodiacPitchandRoll.pdf Wiring went along the left side of the fuse, under the top longeron. Controller mounted on the bottom left of the panel: http://wls1.lancegingell.com/largeplaneimages/DSC06352.JPG In general I've heard great things about TruTrak, and I got to play with one first. I'm happy I went with it. Hope this helps, ..lance http://lancegingell.com/plane.asp 601XL/Jabiru 3300/Flying