---------------------------------------------------------- RotaxEngines-List Digest Archive --- Total Messages Posted Wed 12/10/08: 8 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 03:16 AM - Ethanol in fuel (Peter Thomson) 2. 05:46 AM - Re: Fuel additiveFuel additiveFuel additiveFuel additive (Catz631@aol.com) 3. 07:07 AM - Re: Ethanol in fuel (Roger Lee) 4. 07:15 AM - Re: Fuel additiveFuel additiveFuel additiveFuel additive (Roger Lee) 5. 10:24 AM - Re: Fuel additiveFuel additiveFuel additiveFuel additive (Ollie Washburn) 6. 11:03 AM - Re: Fuel additiveFuel additiveFuel additiveFuel additive (Noel Loveys) 7. 06:05 PM - Rough 912 UL Engine Operation when Pneumatically Balancing Carbs () 8. 06:28 PM - Re: Rough 912 UL Engine Operation when Pneumatically Balancing Carbs (Jim Stewart) ________________________________ Message 1 _____________________________________ Time: 03:16:07 AM PST US From: "Peter Thomson" Subject: RotaxEngines-List: Ethanol in fuel I fly on ethanol blend (10%) with no problems. Carb floats are in good condition and you can monitor these easily. (as long as 1/3 above the surface Ok). From what I read the Bing alcohol and additive resistant float and bowl kit had some problems). Most good quality fuel lines are resistant to ethanol. Is ethanol going to eat through aluminim fuel tanks ? To me this seems doubtful. I live in a humid cliamte and keep tanks topped up to avoid chance for fuel to take up moisture. I've done plenty of time at 9500 with no sign of vapour lock. Peter CH701/912ULS ________________________________ Message 2 _____________________________________ Time: 05:46:55 AM PST US From: Catz631@aol.com Subject: Re: RotaxEngines-List: Fuel additiveFuel additiveFuel additiveFuel additive Thanks for the excellent research Noel ! As I mentioned previously, I saw the product on my British car site. As you probably know older British cars are not usually driven all that much (as in my case) and between repairs usually sit a lot. This would be an excellent product for that use and I thought it might also apply to our aircraft.. When we get alcohol in our fuel in NW Florida (a couple of years so the newspaper says) then hopefully we will have some reports on the usage of these products. I have installed two NAPA in line filters down line from my wing fuel tanks (along with shutoff valves) anyway. I can readily check them prior to each flight. On the Kitfox there have been some problems with the sloshing compound Kreem in the fiberglass tanks. The product has been flaking off in some cases. I have a very very small amount of flaking in my tanks (at least from a borescope investigation) None has come down the fuel lines. I am keeping my eye on it and if I do see small amounts in the filter then the wings come off and new tanks. Alcohol has also been reported as accelerating the possible problem thus the interest in this new product. Dick Maddux Kitfox 4-1200 Rotax 912UL Pensacola,Fl **************Stay in touch with ALL of your friends: update your AIM, Bebo, Facebook, and MySpace pages with just one click. The NEW AOL.com. ________________________________ Message 3 _____________________________________ Time: 07:07:11 AM PST US Subject: RotaxEngines-List: Re: Ethanol in fuel From: "Roger Lee" Hi Peter, That's why Rotax added a return fuel line and would like everyone to have a fuel return line because it helps stave off the vapor lock. -------- Roger Lee Tucson, Az. Light Sport Repairman - Maintenance Rated Rotax Service Center 520-574-1080 Read this topic online here: http://forums.matronics.com/viewtopic.php?p=218656#218656 ________________________________ Message 4 _____________________________________ Time: 07:15:05 AM PST US Subject: RotaxEngines-List: Re: Fuel additiveFuel additiveFuel additiveFuel additive From: "Roger Lee" Hi Guys, If you have metal tanks or a composite type tank and you are concerned about rust, flaking, pin holes or cracks you can slosh your tank with a product called "Kreem Weiss". It's impervious to all the fuels, oils and aviation fuel additives, it seals holes, cracks and stops and coating from flaking. It's a two part epoxy type mix. It is easy to use and tough as nails. -------- Roger Lee Tucson, Az. Light Sport Repairman - Maintenance Rated Rotax Service Center 520-574-1080 Read this topic online here: http://forums.matronics.com/viewtopic.php?p=218657#218657 ________________________________ Message 5 _____________________________________ Time: 10:24:15 AM PST US Subject: RotaxEngines-List: Re: Fuel additiveFuel additiveFuel additiveFuel additive From: "Ollie Washburn" And where might one find it? I tried Google, but nothing American came up. Ollie -------- Ollie RV6-A & Rans S7S Central FL Read this topic online here: http://forums.matronics.com/viewtopic.php?p=218712#218712 ________________________________ Message 6 _____________________________________ Time: 11:03:11 AM PST US From: "Noel Loveys" Subject: RE: RotaxEngines-List: Fuel additiveFuel additiveFuel additiveFuel additive The good news is your new president may squelch the shift to ethanol. He is an academic and as such can read the data on ethanol... All the data! I don't expect it to be high on his list of priorities but I'd be surprised if he continues this fiscal farce. Noel From: owner-rotaxengines-list-server@matronics.com [mailto:owner-rotaxengines-list-server@matronics.com] On Behalf Of Catz631@aol.com Sent: Wednesday, December 10, 2008 10:16 AM Subject: Re: RotaxEngines-List: Fuel additiveFuel additiveFuel additiveFuel additive Thanks for the excellent research Noel ! As I mentioned previously, I saw the product on my British car site. As you probably know older British cars are not usually driven all that much (as in my case) and between repairs usually sit a lot. This would be an excellent product for that use and I thought it might also apply to our aircraft.. When we get alcohol in our fuel in NW Florida (a couple of years so the newspaper says) then hopefully we will have some reports on the usage of these products. I have installed two NAPA in line filters down line from my wing fuel tanks (along with shutoff valves) anyway. I can readily check them prior to each flight. On the Kitfox there have been some problems with the sloshing compound Kreem in the fiberglass tanks. The product has been flaking off in some cases. I have a very very small amount of flaking in my tanks (at least from a borescope investigation) None has come down the fuel lines. I am keeping my eye on it and if I do see small amounts in the filter then the wings come off and new tanks. Alcohol has also been reported as accelerating the possible problem thus the interest in this new product. Dick Maddux Kitfox 4-1200 Rotax 912UL Pensacola,Fl _____ Stay in touch with ALL of your friends: update your AIM, Bebo, Facebook, and MySpace pages with just one click. The 012> NEW AOL.com. ________________________________ Message 7 _____________________________________ Time: 06:05:17 PM PST US From: Subject: RotaxEngines-List: Rough 912 UL Engine Operation when Pneumatically Balancing Carbs I know this issue has been discussed before. Back in May of 2007 I posted a question about Idle settings for the 912. I got a lot of good advice, but I never attempted to pneumatically balance my carbs. because the engine seemed to run so well. Now, after about 147 hours of operation on my 912 UL, I finally decided to check the carb. balance pneumatically. Prior to the test, the engine appeared to run well, it just would not idle smoothly below 1800 rpm. I finally decided to check the carbs. sync. pneumatically. A friend of mine who has done this before helped me to do the test. We followed the Rotax procedure. When we disconnected the cross over balance tube and connected the two manometers to measure the individual vacuums, the engine ran very rough and would not smooth out, or appear to smooth out, until about 3500 rpm. The mercury manometers had a differential of about 3" of mercury at 1800 rpm, and about one inch at 3500 rpm. Adjusting the throttle cable setting at the carb. had little to no effect on this differential. We then dropped the carb. bowls and both appeared normal (floats, gas, ect). Reassembled the bowls and tried again. Same results. Any suggestions as to what the problem is? Hugh McKay Allegro 2000 Rotax 912 UL 147 Hrs ________________________________ Message 8 _____________________________________ Time: 06:28:01 PM PST US From: Jim Stewart Subject: Re: RotaxEngines-List: Rough 912 UL Engine Operation when Pneumatically Balancing Carbs If the engine ran better before the test, you gotta suspect the test setup or possible damage during the setup. hgmckay@bellsouth.net wrote: > I know this issue has been discussed before. Back in May of 2007 I posted a > question about Idle settings for the 912. I got a lot of good advice, but I > never attempted to pneumatically balance my carbs. because the engine seemed > to run so well. Now, after about 147 hours of operation on my 912 UL, I > finally decided to check the carb. balance pneumatically. Prior to the test, > the engine appeared to run well, it just would not idle smoothly below 1800 > rpm. I finally decided to check the carbs. sync. pneumatically. A friend of > mine who has done this before helped me to do the test. We followed the > Rotax procedure. When we disconnected the cross over balance tube and > connected the two manometers to measure the individual vacuums, the engine > ran very rough and would not smooth out, or appear to smooth out, until > about 3500 rpm. The mercury manometers had a differential of about 3" of > mercury at 1800 rpm, and about one inch at 3500 rpm. Adjusting the throttle > cable setting at the carb. had little to no effect on this differential. We > then dropped the carb. bowls and both appeared normal (floats, gas, ect). > Reassembled the bowls and tried again. Same results. > > > > Any suggestions as to what the problem is? > > > > Hugh McKay > > Allegro 2000 > > Rotax 912 UL > > 147 Hrs > > ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message rotaxengines-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/RotaxEngines-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/rotaxengines-list Browse Digests http://www.matronics.com/digest/rotaxengines-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.