---------------------------------------------------------- Kitfox-List Digest Archive --- Total Messages Posted Sun 09/30/07: 11 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 07:33 AM - 4 stroke engine (akflyer) 2. 07:54 AM - Re: 4 stroke engine (Bob) 3. 08:11 AM - Re: 4 stroke engine (akflyer) 4. 09:17 AM - Re: Re: aquamaster floats ??? (Guy Buchanan) 5. 12:26 PM - Re: External Alternator for 912S on Model 7? (SOURDOSTAN@aol.com) 6. 01:59 PM - Re: 4 stroke engine (Don & Dianne Usher) 7. 04:32 PM - 912 UL Carb Needle index (Jay Fabian) 8. 06:40 PM - floats (Don & Dianne Usher) 9. 10:55 PM - Re: Re: Tailwheel bolt went off.... and the rest (m4785@bellsouth.net) 10. 11:04 PM - Re: Re: 4 stroke engine (m4785@bellsouth.net) 11. 11:48 PM - Final Cerification (avtar412) ________________________________ Message 1 _____________________________________ Time: 07:33:09 AM PST US Subject: Kitfox-List: 4 stroke engine From: "akflyer" I have been looking around for an alternative engine to get a bit more power for my Avid. 65 HP is fine for wheels and pounding pavement but that is just not what I am into. I have been looking at the Arctic Cat 660 turbo for awhile now and think this may warrant really looking into what it will take to put the "C" gear box on it. Raven RE-drive has been using the 3 Cylinder Suzuki engine for awhile now with good success, but that was the car motor. This is the cut down version for the snowmachines. I am working on getting an AUW for the various components but It will for sure be better than the subie by a long shot. Stock it is a 72% increase in HP (110 HP @ 6700) and at cruise a 82% increase in torque... this means more pitch go faster at cruise.. If you want to monkey with boost and fuel curve etc the HP is nothing short of spectacular..just once I would like to take off on floats with 145 to 160 HP..Gotta be like flying a turbine otter empty with very little fuel. -------- Leonard Perry Soldotna AK Avid "C" / Mk IV 582 IVO IFA Full Lotus 1260 95% complete Read this topic online here: http://forums.matronics.com/viewtopic.php?p=137261#137261 Attachments: http://forums.matronics.com//files/dtrcat660jdpower2doc_199.pdf ________________________________ Message 2 _____________________________________ Time: 07:54:09 AM PST US Subject: Kitfox-List: Re: 4 stroke engine From: "Bob" You mentioned the 3-cylinder Raven, but have you checked into their 4-cylinder? The 1300 Suzi/Geo engine puts out 90-115 hp for a lot less money than a Rotax 912/912S. http://www.raven-rotor.com/html/redrive.html I guess it's the never-changing trade-off of power vs reliability, isn't it? The snowmobile racers can get a LOT of hp out of those their two-strokes, but they're replacing pistons on a weekly basis. The 582 is pretty conservative by comparison. There's an old rule of thumbs regarding not wanting to dip into the last third of anything. Make sure you have a third of everything as an absolute minimum reserve. A third of the hp beyond what you really need, a third of the torque (load), a third additional fuel and oil flow capability, etc. Bob -------- Remember that internet advice may only be worth what you pay. Read this topic online here: http://forums.matronics.com/viewtopic.php?p=137264#137264 ________________________________ Message 3 _____________________________________ Time: 08:11:15 AM PST US Subject: Kitfox-List: Re: 4 stroke engine From: "akflyer" I would say that it would be quite safe at 112 HP for take off.... That would be very conservative on what you really can do... and the snowmachine racers... The guys at the drags that are getting crazy HP outa the engine that is true.. some change pistons after almost every run, but for mild trail porting and tuning, it is nothing to go for years many thousands of miles and never do anything other than change plugs and clean power valves. With the new technology, fuel injection, ECU's, pipe sensors etc, alot of the old issues are now gone. you done have to worry about jetting for temps or altitude etc. I believe this is the largest contributing factor to all the bad wrap the 2 strokes have gotten. I know a guy locally that has had 5 or 6 engine outs, resulting in the loss of 2 aircraft. All because he know nothing about a 2 stroke and just wont listen when it comes to jetting and operations... the last one he barely hobbled away from and is still in a brace for his broken back. -------- Leonard Perry Soldotna AK Avid "C" / Mk IV 582 IVO IFA Full Lotus 1260 95% complete Read this topic online here: http://forums.matronics.com/viewtopic.php?p=137267#137267 ________________________________ Message 4 _____________________________________ Time: 09:17:14 AM PST US From: Guy Buchanan Subject: Re: Kitfox-List: Re: aquamaster floats ??? At 02:34 PM 9/28/2007, you wrote: >here are a few pics of the floats.. I have never seen them before.. Anyone can see those floats are heavy. Just look at the tires on that pickup! ;-) Guy Buchanan San Diego, CA K-IV 1200 / 582-C / Warp / 100% done, thanks mostly to Bob Ducar. Do not archive ________________________________ Message 5 _____________________________________ Time: 12:26:33 PM PST US From: SOURDOSTAN@aol.com Subject: Re: Kitfox-List: External Alternator for 912S on Model 7? Check with B & C Specialties. They used to sell one that fit the 912ul. Stan Specht Kitfox Model IV Speedster "Columbine" (1250+ hrs) Denver, Colorado ________________________________ Message 6 _____________________________________ Time: 01:59:13 PM PST US From: "Don & Dianne Usher" Subject: Kitfox-List: re: 4 stroke engine A friend of mine has the 4 cylinder geo engine in his Rans courier on floats. It is the smoothest running aircraft engine I have ever heard, and he has not touched it in one hundred hours of use. Weighs just a little more than a 912 and he has about $6000 in it. Raven redrive bolts right onto it. Four cylinder, 16 valve, 100hp computer controlled for $6000, Not bad, and parts/service is readily availible and cheap. Don ________________________________ Message 7 _____________________________________ Time: 04:32:14 PM PST US From: "Jay Fabian" Subject: Kitfox-List: 912 UL Carb Needle index Hi List, I am pulling my Kitfox 4 out of the hanger after a while of not flying it. I have drained all the Auto fuel with10% alch in it, and just filled it back up with non alch auto gas from the airport. I had moved the Carb needle last year , as I was using the 10% eth gas and had problems. Now I am going to use the new gas but the needle settings are making the 912 run rough at the 2k RPM mark, but smooth at the 3k and higher settings. Out of the 4 slots on the needle, which one will give me the best operations? it is about 65 deg F OAT here in Ma. I started with the clip in the second slot from the bottom of the needle, ( Ran Bad) I moved it one notch up and got the same results, moved it to the bottom one and the low rpms are rough sounding like a Harley sound, middle rpms are fine. Any suggestions? i had this nipped in the but last year but now I am banging my head again Thanks Jay Fabian ________________________________ Message 8 _____________________________________ Time: 06:40:35 PM PST US From: "Don & Dianne Usher" Subject: Kitfox-List: floats I have to sell my new full lotus floats. Home is on a beach that is always windy. either amphibs or nothing. Great performance with KF 3. Cruise at 80mph and off water in 8 seconds flat calm. Comes complete with rigging that allows main gear left in place. Takes one hour to change from wheels to floats. Have lots of pics email denver7@xplornet.com. Don ________________________________ Message 9 _____________________________________ Time: 10:55:48 PM PST US From: m4785@bellsouth.net Subject: Re: Kitfox-List: Re: Tailwheel bolt went off.... and the rest Curious why you stripped the covering,Ihave a kitfox 4 with a 2leaf spring and no problems yet with the tail wheel...lots of 3 point landings..some graceful&some not... I have hear some folks are going to 3 leaf springs,maybe that might work as a solution.. Did you have a hard landing when this occured?, or do you think this is a structural failure in the mounting brackets,and/or metal fatage on the the bolts them selves.....A/N hardware? Note: epoxy braced fills [metal on wood] will give a harmonic that the wood might not support,succesfully causing a fracture in the high stress point... Thanks ...Mark..N61AC -------------- Original message from "Zimmermans" : -------------- IMG_0255

Curious why you stripped the covering,Ihave a kitfox 4 with a 2leaf spring and no problems yet with the tail wheel...lots of 3 point landings..some graceful&some not...

 I have hear some folks are going to 3 leaf springs,maybe that might work as a solution..

  Did you have a hard landing when this occured?, or do you think this is a structural failure in the mounting brackets,and/or metal fatage on the the bolts them selves.....A/N hardware?

 Note: epoxy braced fills [metal on wood] will give a harmonic that the wood might not support,succesfully causing a fracture in the high stress point...

 

Thanks ...Mark..N61AC

-------------- Original message from "Zimmermans" <jezim@pro-ns.net>: --------------
________________________________ Message 10 ____________________________________ Time: 11:04:22 PM PST US From: m4785@bellsouth.net Subject: Re: Kitfox-List: re: 4 stroke engine Thanks don,we needed more people like you to help our effort in after market engines,I fly my fox4 with a VW 2180 82hp and love it,parts are cheap,motor is around $6000.00 new and has a TBO of 1000 hrs. Rotax is way over priced in my opinion for what you get....there motto is market the Rich/famous/just those lost souls that can put it on there credit card....lol -------------- Original message from "Don & Dianne Usher" : -------------- A friend of mine has the 4 cylinder geo engine in his Rans courier on floats. It is the smoothest running aircraft engine I have ever heard, and he has not touched it in one hundred hours of use. Weighs just a little more than a 912 and he has about $6000 in it. Raven redrive bolts right onto it. Four cylinder, 16 valve, 100hp computer controlled for $6000, Not bad, and parts/service is readily availible and cheap. Don

Thanks don,we needed more people like you to help our effort in after market engines,I fly my fox4 with a VW 2180 82hp and love it,parts are cheap,motor is around $6000.00 new and has a TBO of 1000 hrs.

 Rotax is way over priced in my opinion for what you get....there motto is  market the Rich/famous/just those lost souls that can put it on there credit card....lol

-------------- Original message from "Don & Dianne Usher" <denver7@xplornet.com>: --------------

A friend of mine has the 4 cylinder geo engine in his Rans courier on floats. It is the smoothest running aircraft engine I have ever heard, and he has not touched it in one hundred hours of use. Weighs just a little more than a 912 and he has about $6000 in it. Raven redrive bolts right onto it. Four cylinder, 16 valve, 100hp computer controlled for $6000, Not bad, and parts/service is readily availible and cheap.
Don
________________________________ Message 11 ____________________________________ Time: 11:48:46 PM PST US Subject: Kitfox-List: Final Cerification From: "avtar412" Well I finally finished the 40 hr test period and received my non terminating Certificate on Airworthiness! Aircraft flying beautifully. John A New Zealand. Kitfox Series 5 EA 81 Turbo Read this topic online here: http://forums.matronics.com/viewtopic.php?p=137373#137373 Attachments: http://forums.matronics.com//files/cath1st_ride_706.bmp ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message kitfox-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/Kitfox-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/kitfox-list Browse Digests http://www.matronics.com/digest/kitfox-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.