View Full Version : Rotax engine in a J3/PA-11?

11-10-2004, 12:37 AM
Has anyone out there put one of the 4 stroke Rotax 912 (100-115HP) engines on an experimental J3 or PA-11? I am considering building an ultra light experimental J3 or PA-11 and was wondering what different engine alternatives were available in addition to the C-90 or 0-200. According to the Rotax literature, the 912 non-turbo install weight is approximately 140 lbs which is close to the weight of a C-65, I think. What other engines are out there that would be good for a J3/PA-11? Just trying to figure out my next experimental project.

Bill Ingerson
11-10-2004, 04:56 PM
How about that new Radial engine Rotax has? Now that would be different.

11-10-2004, 06:59 PM
I remember reading in Sport Aviation a couple of years ago about someone in Sheridan WY putting a Rotax in a PA-11 replica. You might try the EAA web site and contact the chapter in Sheridan.

11-10-2004, 09:14 PM
There is a guy around Detroit that is working on a kit 'J3" with the Rotec on the nose. I've seen pictures of the fuselage frame with the engine mounted posted somewhere but I can't remember where. I remember thinking that the engine had to sit awfully high to get the crankshaft up to where you could get a prop on it.

I wonder about one of these new Thielert diesel engines. Supposedly 135hp, but LOTS of torque.

John Scott

11-10-2004, 10:31 PM
What is the TBO on the 912? I have heard the 582 2 cycles had 300 hr TBO?

11-10-2004, 11:01 PM
The 912 has a 1500 hour TBO. It is a four cylinder, four cycle aircraft engine. I believe it is also certified and it cost around $12,000 new.

11-11-2004, 10:06 AM
How about that new Radial engine Rotax has? Now that would be different.

Hi Bill,

The radial is from Rotec, an Australian firm. Rotax, from Austria (owned by Bombardier out of Canada), doesn't make a radial. Check out the Rotec web site at http://www.rotecradialengines.com/.


Joe Norris

11-11-2004, 11:25 AM
How about that new Radial engine Rotax has? Now that would be different.

You mean like this? :D


11-11-2004, 11:36 AM
Forward vis is going to be a 'tad hindered there ain't it !!!! :(

Bill Ingerson
11-12-2004, 06:26 PM
Wow, what a cool looking engine that little radial is, I was kidding about putting one on a supercub and there it is, on one. I would like to see how it looks and performs when done.