I want to swap out my OS LA40 , thats in my PT40 Trainer.
I want a little bit more speed, any suggestions on a good
engine ?
thanks....

The OS 46 AX should bolt right in. The mount pattern should be close. Another choice would be the TT 46 pro. I believe they also have the same or very close mount pattern. And lastly I believe that the Magnum series would about bolt in. Any of these would be a good choice.

As a side, if you are not concerned about a direct fit replacement I would reccomend the following:

Enya 50 SS, Irvine 45 and 53, Super Tiger GS 45 and 51, Magnum 52 XLS, and MVVS 49. Any of the above would do well in your plane.

Mark Shuman

Thanks Mark
there's a lot to choose from ,can hardly wait
to get started . I'm going to post pic's
on my trainer as I recover it and modify certain
things , Hope I can get help from everyboby...
Thanks again...

OS 52 Four Stroke would fit too. Or you could use a 50sx. Or a 46la.....

tt 46 pro or a saito 72... wowzers

Thanks RICHD,
I was thinking of the TT 46 pro and I figured
I might be over doing it.I hear from reading
post thats a gooood motor.I believe thats
the ticket for me.
Later...

Thanks for the imfo. jtemple42000
I think I will go with the TT 46 pro.
I most likely have to heat shields
under the fuse and wings.
later....