---------------------------------------------------------- Zenith-List Digest Archive --- Total Messages Posted Tue 04/27/04: 10 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 03:23 AM - Re:701 Fuselage help (RURUNY@aol.com) 2. 03:36 AM - Re:701 Fuselage help (RURUNY@aol.com) 3. 06:03 AM - Re: Intercom + Radio sidetone volume (Frank Jones) 4. 08:38 AM - Exhaust cracks... (Bima, Martin) 5. 10:04 AM - fuel tanks for XL (David Barth) 6. 11:31 AM - Re: Engine AND ignition working (HINDE,FRANK (HP-Corvallis,ex1)) 7. 03:38 PM - Re: fuel tanks for XL (Bryan Martin) 8. 04:02 PM - Re: fuel tanks for XL (HINDE,FRANK (HP-Corvallis,ex1)) 9. 04:48 PM - Re: fuel tanks for XL (Bryan Martin) 10. 05:51 PM - Re: fuel tanks for XL (Benford2@aol.com) ________________________________ Message 1 _____________________________________ Time: 03:23:11 AM PST US From: RURUNY@aol.com Subject: Zenith-List: re:701 Fuselage help --> Zenith-List message posted by: RURUNY@aol.com Jeff, Thanks for the good words, there are points in the project where I have had to stop and think carefully about what I am about to do for fear of screwing things up good. You're right, I think I have thought too much about this and need to just do it. Thanks Brian ________________________________ Message 2 _____________________________________ Time: 03:36:55 AM PST US From: RURUNY@aol.com Subject: Zenith-List: re:701 Fuselage help --> Zenith-List message posted by: RURUNY@aol.com Roy, Thanks for the help. I'm sure the ratio of measuring to drilling will be high for me also. Brian Do not archive ________________________________ Message 3 _____________________________________ Time: 06:03:56 AM PST US From: "Frank Jones" Subject: RE: Zenith-List: Intercom + Radio sidetone volume --> Zenith-List message posted by: "Frank Jones" Frank, Remove the radio from the rack. Look at the top panel of the radio. There should be a number of holes with silver tape covering them. One of the holes is marked ST for sidetone. If you remove the tape you'll find a Phillips head adjustment. If you turn it about 1/2 turn counterclockwise you'll eliminate sidetone altogether. A 1/4 counterclockwise turn was all that was required to get my sidetone volume to roughly equal the receive volume. Hope your radio has the same feature. Frank >Awesome!....Sorry I been asleep when this issue came up. I have the same >combo and same issue. When I called (whever it was) they told me the ICOM >did not have the ability to adjust the sidetone. > >So where is this little ajustment...My Wife will love you forever. > >Now if I could find a way to stop the ignition noise coming over the radio >as wel that would be sweet. > >Thanks > >Frank...the other Frank that is. > >601 HDS Stratus w Ram heads 320 hours ________________________________ Message 4 _____________________________________ Time: 08:38:46 AM PST US Subject: Zenith-List: Exhaust cracks... From: "Bima, Martin" --> Zenith-List message posted by: "Bima, Martin" A great post appeared in the Zenith forum about an in-flight cracked exhaust stub. Coincidentally, a really good article appeared in this months Aviation Safety Letter. See link below... http://www.tc.gc.ca/civilaviation/systemsafety/newsletters/tp185/menu.ht m The printed version has been mailed out so keep checking the site until the April, 2004 edition shows up (may take a few days). Martin Bima Winnipeg, Canada STOL-Vair www.autobahn.mb.ca/~bima ________________________________ Message 5 _____________________________________ Time: 10:04:51 AM PST US From: David Barth Subject: Zenith-List: fuel tanks for XL --> Zenith-List message posted by: David Barth Hi List. I would like to ask a question to tap into your collective wisdom. In keeping with the KISS principle for fuel systems I would like to simply treat my inboard and outboard tank as one tank on each side. I will have four tanks, two in each wing. I want to have a simple large diameter hose (1 inch?) connect the two left wing tanks and a smaller hose connecting them higher up for venting purposes. I would only have a filler and external vent line on the outboard tank but drain valves on both the outboard and inboard. Then do the same for the right wing. I would like your thoughts and comments on such a system. From the inside of the plane I would simply have two large tanks to switch between instead of 4 smaller ones. This is especially important as I will have to run return fuel lines to the tanks with the fuel injected system I am planning on using. It could get really complex very quickly if I were to plumb it as per 4 separate fuel tanks. Thanks for your views. David ===== David Barth 601 XL Plansbuilder 15% done? Making Spars - ready for Chromate and riveting __________________________________ http://hotjobs.sweepstakes.yahoo.com/careermakeover ________________________________ Message 6 _____________________________________ Time: 11:31:51 AM PST US From: "HINDE,FRANK (HP-Corvallis,ex1)" Subject: RE: Zenith-List: Engine AND ignition working --> Zenith-List message posted by: "HINDE,FRANK (HP-Corvallis,ex1)" Yes the GM system is great. Its only drawback is that it needs a little more cranking speed to make it fire. Make sure you keep your reluctor gap in the distributor set to the min and ensure there is no (little) side play on the shaft. I found a period during the winter when it would not crank fast enough to get it to start. If this happens to you you can manually turn on the the SECOND igntition just at the right time. This makes the thing spark and a couple of tries always makes it fire right up.....:) Frank Do not archive -----Original Message----- From: owner-zenith-list-server@matronics.com [mailto:owner-zenith-list-server@matronics.com] On Behalf Of Michel Therrien Subject: Zenith-List: Engine AND ignition working --> Zenith-List message posted by: Michel Therrien Hi Group, The weekend has been a good weekend. Finally, I got the engine working with the Nippodenso/GM HEI setup... Today, I got the aircraft registration done.... Fun to see my name and plane in the Transport Canada database! We sat in the plane tied down to the ground and ran the engine for a while at 4400 rpm.. FUN! Cooling appears to be good so I'm getting confident that I'll have final inspection in may or june (if school leaves me some time to finish preparing the aircraft). Thanks to those of you who contacted me last week to help. I have a video online of engine turning, but it is a big file for what you get... (is there a way to make more efficient video files?) http://mthobby.pcperfect.com/misc/engine.avi Michel do not archive ===== ---------------------------- Michel Therrien CH601-HD, C-GZGQ http://mthobby.pcperfect.com/ch601 http://www.zenithair.com/bldrlist/profiles/mthobby http://pages.infinit.net/mthobby __________________________________ http://hotjobs.sweepstakes.yahoo.com/careermakeover advertising on the Matronics Forums. ________________________________ Message 7 _____________________________________ Time: 03:38:23 PM PST US Subject: Re: Zenith-List: fuel tanks for XL From: Bryan Martin --> Zenith-List message posted by: Bryan Martin on 4/27/04 1:04 PM, David Barth at davids601xl@yahoo.com wrote: > --> Zenith-List message posted by: David Barth > > In keeping with the KISS principle for fuel systems I > would like to simply treat my inboard and outboard > tank as one tank on each side. I will have four > tanks, two in each wing. I want to have a simple > large diameter hose (1 inch?) connect the two left > wing tanks and a smaller hose connecting them higher > up for venting purposes. I would only have a filler > and external vent line on the outboard tank but drain > valves on both the outboard and inboard. Then do the > same for the right wing. > > David > > ===== > David Barth > 601 XL Plansbuilder 15% done? > Making Spars - ready for Chromate and riveting > Sounds like it will work as long as the fuel can transfer to the inboard tank as fast as the fuel nozzle will deliver it. As I recall, other builders have used a similar setup. -- Bryan Martin N61BM, CH 601 XL, Stratus Subaru. Airframe construction complete. Panel and engine installed. Nearly done. do not archive. ________________________________ Message 8 _____________________________________ Time: 04:02:18 PM PST US From: "HINDE,FRANK (HP-Corvallis,ex1)" Subject: RE: Zenith-List: fuel tanks for XL --> Zenith-List message posted by: "HINDE,FRANK (HP-Corvallis,ex1)" I have a couple of initial thoughts that I am happy to have shot down. I am thinking that you do not need a vent on the inboard tank...Just the large connection tube and the vent on the outboard tank. The problem I see is that if you fill both tanks on one wing and for somereason remove the cap for the inboard tank...I.e you will get fuel gushing out the tank filler cap due to the incidence of the wings (incidence maybe much greater on the HD(s) models. I would return the fuel to the inboard tank just in the (very unlikly) case of something going wrong with the outboard tank. A wing tank only fuel injected system does create a few problems in my mind. You are almost certainly into a 6 port fuel selector valve (I don't even use a selector on my carb engined plane) which also means putting the pump(s) on the outlet to the valve. This means sucking on a few feet of pipe with the potential attendant vapour lock issues. I am looking at the same situation on a fuel injected RV..I may even put a primer pump at the outlet of each tank if they will fit. Frank -----Original Message----- From: owner-zenith-list-server@matronics.com [mailto:owner-zenith-list-server@matronics.com] On Behalf Of David Barth Subject: Zenith-List: fuel tanks for XL --> Zenith-List message posted by: David Barth Hi List. I would like to ask a question to tap into your collective wisdom. In keeping with the KISS principle for fuel systems I would like to simply treat my inboard and outboard tank as one tank on each side. I will have four tanks, two in each wing. I want to have a simple large diameter hose (1 inch?) connect the two left wing tanks and a smaller hose connecting them higher up for venting purposes. I would only have a filler and external vent line on the outboard tank but drain valves on both the outboard and inboard. Then do the same for the right wing. I would like your thoughts and comments on such a system. From the inside of the plane I would simply have two large tanks to switch between instead of 4 smaller ones. This is especially important as I will have to run return fuel lines to the tanks with the fuel injected system I am planning on using. It could get really complex very quickly if I were to plumb it as per 4 separate fuel tanks. Thanks for your views. David ===== David Barth 601 XL Plansbuilder 15% done? Making Spars - ready for Chromate and riveting __________________________________ http://hotjobs.sweepstakes.yahoo.com/careermakeover advertising on the Matronics Forums. ________________________________ Message 9 _____________________________________ Time: 04:48:17 PM PST US Subject: Re: Zenith-List: fuel tanks for XL From: Bryan Martin --> Zenith-List message posted by: Bryan Martin on 4/27/04 7:01 PM, HINDE,FRANK (HP-Corvallis,ex1) at frank.hinde@hp.com wrote: > --> Zenith-List message posted by: "HINDE,FRANK (HP-Corvallis,ex1)" > > > I have a couple of initial thoughts that I am happy to have shot down. > > I am thinking that you do not need a vent on the inboard tank...Just the > large connection tube and the vent on the outboard tank. I hope you're wearing your flak vest. :) He needs a vent from the inboard tank to the outboard tank or the inboard tank will not fill, he's only planning to have a filler cap on the outboard tank. As the fuel flows through the lower tube from the outboard tank, the air must exit the inboard tank through the upper tube. > > A wing tank only fuel injected system does create a few problems in my mind. > You are almost certainly into a 6 port fuel selector valve (I don't even use > a selector on my carb engined plane) which also means putting the pump(s) on > the outlet to the valve. This means sucking on a few feet of pipe with the > potential attendant vapour lock issues. The bottom of the inboard tank is a few inches above the cabin floor. If the pump is near the low point of the system (near the gascolator) and the lines leading to it offer minimal restriction to flow, the inlet to the pump will have some pressure due to gravity feed. Not much but at least enough to prevent suction from forming. Or He could put the pumps at the outlet of the tanks and pressurize the entire fuel line as is done on most autos now. In either case a 6 port valve is needed. -- Bryan Martin N61BM, CH 601 XL, Stratus Subaru. Airframe construction complete. Panel and engine installed. Nearly done. do not archive. ________________________________ Message 10 ____________________________________ Time: 05:51:56 PM PST US From: Benford2@aol.com Subject: Re: Zenith-List: fuel tanks for XL --> Zenith-List message posted by: Benford2@aol.com In a message dated 4/27/2004 4:39:28 PM Mountain Daylight Time, bryanmmartin@comcast.net writes: > > > In keeping with the KISS principle for fuel systems I > > would like to simply treat my inboard and outboard > > tank as one tank on each side. I will have four > > tanks, two in each wing. I want to have a simple > > large diameter hose (1 inch?) connect the two left > > wing tanks and a smaller hose connecting them higher > > up for venting purposes. I would only have a filler > > and external vent line on the outboard tank but drain > > valves on both the outboard and inboard. Then do the > > same for the right wing. > > > > David > I did the exact thing on my 801. Works ok. If I had to change anything I would have put the ZAC tanks in the outboard section and my long range ones inboard. That way the dihedral would work in my favor. KISS is the best way to go in the fuel system department.... Ben Haas N801BH