JustDreamin:

The JETT website is www.jettengineering.com. It's a small company based in Houston and they make (for the most part) racing engines that are tuned to turn smaller props. However, they have a few engines - like the 76L, that are designed to turn larger props at lower RPMs. All JETT's are 2-strokes and they have excellent construction; built very 'tight'. If you do get one, then ask Dub Jett (the founder and owner) to run the engine in for you (he charges $15 extra for this). All engines are made to order and deliveries are currently running at 3 weeks.

The engines are machined from a single block of Aluminum and are quite light: the 76L weights 15.2 oz, less than an OS 46 AX. Turns a 13x8 prop at over 10K RPM, 14x4 at 10,500 or more. The largest prop is a 14x6 (though that's getting on the heavier side). No way a YS-63 can do that. BTW - nothing against YS engines. They are great as well. In fact, I'm getting my YS-110 this weekend (along with my second JETT).

This engine works incredibly well on the WM CAP. I'v tried various props from a 12x6, 12x8, 13x6, 13x7 and 14x4. With the 13" and 14" props, the flight characteristics are excellent. This is more than the YS-63 can turn; the YS-63 is recommended with a 12x6 or 12x8 and with the large COWL on the CAP, a 13" or 14" prop is better.

In fact, I just got a second 76L and I'm also getting an Aeroworks Edge 540T. But the WM CAP is such a nice plane that I'll probably get another one of those as well.

JETTs are expensive: the 76L runs $375. An optional "TURBO JETT" in-cowl muffler is another $70. But as I said, it's a great engine and JETT provides the best technical support in the business as well.

(and no - I am not an agent of JETT. Just a big fan. I run a software company in California ; www.fiorano.com).

atul