Here are photos of some of my diesel engines!  I also have all the PAW diesels .15 and smaller.  Plus Cox conversions and a couple of Cub .049s.

First photo is the British contingent, an AM 2.5, Frog .049 (I think the size is right), and Albon Bambi .009.

Second photo is American:  Cox Conquest .15 with Davis Conversion and my own custom venturi, Cub .074 and McCoy .049

Third photo is the teeney weeny, unavailabilium set:  Valentine .006, Cox .020 with Davis Crank and head, Arne Hende .036 Drone replica and Arne Hende .036 Dooling replica.

That Conquest is the most powerful .15 diesel I have ever run!  What a beast.   

I haven't been able to get the Drone running, but will give it a shot soon with Aerodyne "small engine" fuel.  I haven't tried out the Dooling or Valentine.

I scored the Frog on Saturday for $25.  Great compression!  Should be a runner. 

Yes, it now runs just fine.  The drive washer was rubbing on the case, I turned the case down about .005, and end of problem.

I got 9000 rpm on a 7x4 prop with "iffy" fuel.  I probably will try a 6x5, with a lot less blade area next.  And good Aerodyne small engine diesel fuel.  I just wanted to see if it had any "juice" left.  It is a bit worn, but with an electric starter, will kick right off.  I do need to add a brass bushing behind the drive washer if an electric starter is going to be in its future.

I am considering putting this, the Cub .049 diesel or Cub .074 diesel on my Baby Clown.  The B Clown is currently having some finish touch-up, so an engine switch at the same time would be reasonable.

Hello Larry,
  Just looked up some details on the Frog 80 on Ron Chernich's website. Seems there were 3 marks of the Frog 80. The Mk1 is fitted with an o ring contrapiston. The later ones are normal contrapistons. Seem that my 80 is one with the o ring and I never noticed the difference in handling. There was one word of warning. The head is held on with two bolts. The torque settings need to be maintained, as it is VERY easy to distort the cylinder. Do NOT remove the head unless it is absolutely necessary. Glad I read that, as I had no idea it was so critical on this engine.

Regards,

Andrew.