---------------------------------------------------------- Zenith-List Digest Archive --- Total Messages Posted Thu 04/10/03: 4 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 07:42 AM - Re: Fuselage wing fairing (HINDE,FRANK (HP-Corvallis,ex1)) 2. 08:14 AM - High EGT's on Jab 3300 (Schallgren@aol.com) 3. 10:22 AM - Re: Fuselage wing fairing (Gary Gower) 4. 01:01 PM - Re: Fuselage wing fairing (Thilo Kind) ________________________________ Message 1 _____________________________________ Time: 07:42:35 AM PST US From: "HINDE,FRANK (HP-Corvallis,ex1)" Subject: RE: Zenith-List: Fuselage wing fairing --> Zenith-List message posted by: "HINDE,FRANK (HP-Corvallis,ex1)" Good...and let us know how it works out, particularly what max and cruise speeds you end up with as measured on your GPS. Frank -----Original Message----- From: Michel Therrien [mailto:mtherr@yahoo.com] Subject: RE: Zenith-List: Fuselage wing fairing --> Zenith-List message posted by: Michel Therrien Yes, the radiator cap is higher than the radiator (but not by a lot). Three of my friends have Subaru engines with in-cowl radiators. They're all happy with their temperatures although two of them had some difficulty initially because the intake holes in their cowling were two small. The pressure may be higher than what you mention. The reason is that the cowling must be made so it is a "pressure cowling". That means that it is sealed all around (see the problem for the bottom part?) so that air is forced through the radiator before exiting underneath the plane. My mentor also told me that the shape of the cowling at the exit is important so a turbulence is created, acting like a venturi (or vacuum?) for the radiator air. I feel that it is a proven approach now and I don't think I'm venturing too much in new areas. I expect it to work as well as it does for my buddies. Michel --- "HINDE,FRANK (HP-Corvallis,ex1)" wrote: > --> Zenith-List message posted by: "HINDE,FRANK > (HP-Corvallis,ex1)" > > Very interesting Michel... >... > Did you design this or is it a "try it and see what > happens" design? > ===== ---------------------------- Michel Therrien CH601-HD http://mthobby.pcperfect.com/ch601 http://www.zenithair.com/bldrlist/profiles/mthobby http://pages.infinit.net/mthobby http://tax.yahoo.com advertising on the Matronics Forums. Share: Share photos & files with other List members. ________________________________ Message 2 _____________________________________ Time: 08:14:44 AM PST US From: Schallgren@aol.com Subject: Zenith-List: High EGT's on Jab 3300 --> Zenith-List message posted by: Schallgren@aol.com List: Jerry said "Speaking of egts, my new 3300's egts rip right on past the 1380 limit on takeoff on my pusher Titan. Is this because of the "throttle valve turbulence" Kurt speaks of below or something else. At lower cruise RPMs they are just fine. Any thoughts, ideas, or suggestions are more than welcome." We had the same problem on our Number 6 cylinder anytime we were close to WOT. At the same time we were getting the excessive number 6 readings all other cylinders were normal. After many conversations with Pete about possible solutions we did what we should have done at first; namely, swap the number 6 EGT probe with the number 4 probe. Now the problem is on the number 4 cylinder so we have a bad probe. We plan to replace the original number 6 probe the first time we have to work on something else behind the instrument panel. In the interim we will crank up the limit on EGT temps to 1450 or above until we no longer get the red light on our EIS system. We will also record the EGT's/CHT's/oil press/oil temp in a log for each flight to insure that we are fully aware of the engine health at all times. By the way the temp/press log is the same as airlines record on each flight in order to extend the time between engine overhauls. If you wish any other info Jerry don't hesitate to contact me. Stan 601 HDS/Jab 3300/96 hours ________________________________ Message 3 _____________________________________ Time: 10:22:01 AM PST US From: Gary Gower Subject: Re: Zenith-List: Fuselage wing fairing --> Zenith-List message posted by: Gary Gower We always do a thick paper dummy of all the irregular parts, most of them fit, but there is always a little trimming to do, this way we save trashing aluminum. Saludos Gary Gower 701 912S GDL, Mexico --- Michel Therrien wrote: > --> Zenith-List message posted by: Michel Therrien > > Hello group, > > I am making the 6E1-1 part (fuselage - wing fairing) > for the 601-HD(S) and I am wondering if I should cut > it as per the dimensions in the plans or if I have to > make a carton dummy and test it on the plane until I > find the true dimensions. > > Any advise? > > Michel > > > ===== > ---------------------------- > Michel Therrien CH601-HD > http://mthobby.pcperfect.com/ch601 > http://www.zenithair.com/bldrlist/profiles/mthobby > http://pages.infinit.net/mthobby > > http://tax.yahoo.com > > > > > > > > http://tax.yahoo.com ________________________________ Message 4 _____________________________________ Time: 01:01:56 PM PST US From: "Thilo Kind" Subject: Re: Zenith-List: Fuselage wing fairing --> Zenith-List message posted by: "Thilo Kind" Hi folks, DON'T do the foam method on the fairings. Not a good idea. I did that, using a small vinyl hose to insert the foam into the fairing. In order to prevent the fairing from warping I enclosed them in plywood. The plywood stayed on there for 48 hours; initally everything looked allright. However, a few days later it got hot, the foam expanded and the fairings looked like beaten up with a hammer. Thilo Kind ----- Original Message ----- From: "Randy Stout" Subject: Re: Zenith-List: Fuselage wing fairing > --> Zenith-List message posted by: "Randy Stout" > > I just re-made mine using Fred's method and really think this is the way to > go. It does add a little weight, but I'm not so worried about someone > stepping on them anymore. Although I wouldn't recommend walking on them, I > did test the strength by standing on them and they held my 180 lb. butt. > > I guess I should tell you why I had to re-make mine... Awhile back there > was a thread about this and one of the suggestions was to squirt foam into > the cavity. Composite builders make sandwiches of fiberglass and foam, which > makes a very strong structure. The general idea made sense, so why not give > it a try? The first problem was trying to get the foam distributed into the > cavity. I drilled 2, 3/8" holes to insert the tube into, and tried to poke > the tube in as far as I could in different directions. It still felt as if > there were pockets without foam. The second problem was with curing. After a > more than a month the foam never completely cured. Every day I would clean > out the holes in the bottom to relieve the pressure. One warm day the skins > began to buckle slightly. That's when I gave up and removed them. One other > fear was with the foam collecting water. Since the foam was closed cell > foam, I didn't think this would be a problem. Unfortunately I couldn't get > all the cavity filled so there were pockets where water could have > accumulated. > > Randy Stout > CH 601 HD > r5t0ut@earthlink.net > http://www.geocities.com/r5t0ut21/index.html > > > ----- Original Message ----- > From: "Michel Therrien" > To: > Subject: Re: Zenith-List: Fuselage wing fairing > > > > --> Zenith-List message posted by: Michel Therrien > > > > Thanks! I will use a 0.025" skin for this part and I > > intend to install L stiffeners the same way as Fred > > Hulen did > > (http://homepages.together.net/~billvt/Fairings%20by%20Fred/Fairings.htm) > > > > Thanks for the advise. > > > > Michel > > > > --- Dave Alberti wrote: > > > --> Zenith-List message posted by: "Dave Alberti" > > > > > > > > > Mike, > > > I made posterboard patterns of the shape from the > > > plans and then test fit to > > > see how close they were. In my case the Zenith > > > sizes were larger than my > > > finished dimensions but the angles were also > > > slightly different. > > > > ===== > > ---------------------------- > > Michel Therrien CH601-HD > > http://mthobby.pcperfect.com/ch601 > > http://www.zenithair.com/bldrlist/profiles/mthobby > > http://pages.infinit.net/mthobby > > > > http://tax.yahoo.com > > > > > >