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#1
11-10-2004, 11:33 AM
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Rotax PWC Engine on Ebay
Just saw this engine on ebay. GyroRon has been talking about someone needed to pick one of these engines up and modifying it to fit a gyro.
Wish I had the cash or I would pick it up in a heartbeat. Ebay PWC Engine Rotax 185HP and 4 stroke whohoo!!!!
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Toby Harvey Alvin, Texas Last edited by gyroman; 11-10-2004 at 11:38 AM. 
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#2
11-10-2004, 11:43 AM
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I wish it had the PTO end in the photos.
Last edited by Brent_Brown; 11-10-2004 at 02:30 PM.
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#3
11-10-2004, 02:33 PM
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I just sent money for the 670 maybe this would have been the right motor. For all you LW guys looking for that powerplane here it is.
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#5
11-10-2004, 05:17 PM
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The only problem with the PWC engines is:
They do not have a water pump, the water is pumped from the jet drive unit. snowmobile has a water pump built in, like rotax. The crankshaft is externally threaded, not tapered, like a snowmobile or ROTAX engine PWC's have water cooled exhaust, and the ports in the heads must be welded shut to use a non water cooled pipe. Other than coming up with a way to drive a waterpump and a gearbox, they are great engines, Anthony Spagnoletti built a beautiful air command with a Yamaha 700, BUT HE DID HAVE TO DO EXTENSIVE MODIFICATIONS to make the gearbox mount, water pumop and exhaust.
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The government cannot give anything to anybody that the Government does not first take from somebody else. “I prefer dangerous freedom over peaceful slavery.” - Thomas Jefferson Scott Essex....Flying H Ranch
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#6
11-11-2004, 02:02 AM
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Scott are you sure the big 4 storke have water pipes?
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#7
11-11-2004, 02:33 AM
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I haven't seen any 4 stroke PWC engines, But most boats Inboards. and I.O. use water cooled exhaust, but they also use converted auto engines.
I would imagine that a purpose built engine would have the coolant passages similar to the 2 strokes. After taking a good look at the engine on ebay, it looks like it has it's own cooling system, Hmmmm looks like it would be worth a good look! OK brent get busy! I still want to know more about the BMW R-100 conversions. 
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The government cannot give anything to anybody that the Government does not first take from somebody else. “I prefer dangerous freedom over peaceful slavery.” - Thomas Jefferson Scott Essex....Flying H Ranch Last edited by scottessex; 11-11-2004 at 02:36 AM.
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#8
11-11-2004, 03:45 AM
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here are a few new engines out there.......more for you to try Brent.
New 4 stroke snowmobile engines.....Ohhh,oooohhh!
__________________
The government cannot give anything to anybody that the Government does not first take from somebody else. “I prefer dangerous freedom over peaceful slavery.” - Thomas Jefferson Scott Essex....Flying H Ranch
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#9
11-11-2004, 05:13 AM
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"Anthony Spagnoletti built a beautiful air command with a Yamaha 700, BUT HE DID HAVE TO DO EXTENSIVE MODIFICATIONS to make the gearbox mount, water pumop and exhaust."
I think that gyro took "Best of Show" or some other such award a couple of years ago at BD's. I think I have a couple of pics of that gyro at home, I'll try to remember to post some of them tonight. (Unless I get side tracked playing Halo 2 again) js
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Jeff Spradling Commander 3203 "Character is doing the right thing when no one is looking."
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#10
11-11-2004, 05:24 AM
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Scott the BMW is just like a EA81. Just mount the plate to the bell and your good. I had a 2SI box on it and the motor ready to fly was 150 pound. That would have 60 to 70 HP max. It would be best in a light single place tractor.
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#11
11-11-2004, 05:29 AM
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BMW with 2SI
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#12
11-11-2004, 01:03 PM
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Hello Brent,
Absolutely good for single seater tractor, but no no for two seater.The newer engine with overhead cams is also a very poor performer for two seaters. I know a few two seaters with the latest engines with 110 hp on the paper. The prop shows more something like 80 hp. JOS
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#13
11-12-2004, 03:21 AM
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It looks cool on the pusher
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#14
11-12-2004, 06:59 AM
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is it possible to easily name the pics -
i dont have a clue what these engines are .....thanx Quote:
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#15
11-12-2004, 08:55 AM
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Looks like the four cylinder is a Artic cat engine - Artic cat uses Suzuki engines, but now suzuki is partners with Kawasaki and my best guess is this engine is truely a Kawasaki Product.
the little inline two cylinder is a Polaris. Most likely very small displacement and tuned for alot of power, might not last long in a heavy duty application like a aircraft engine the V twin is a Rotax. that is all I know about that. It is likely a bigger displacement engine, possibly close to 1000cc. I do know that all the four stroke Jet Ski engines have a closed cooling system and are designed to run under high loads for long periods of time. I would think the sled engines aren't as tough. It would probably be easier to convert a sled engine though. 5 or so years from now will be interesting times as more and more of these engines are made availble on the used market. The little polaris engine would probably make a great gyrobee type engine.
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...Ask me and I will tell you..if you don't want to know then don't ask.
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