Fellows,
Our club is going to revive the old pylon races using the Global ARF 44" AT-6 or House of Balsa kit planes. The objective is to keep the equipment and performance as equal as possible, keep the expenses down and have some low key racing. Some of the guys still have planes sitting around and the engine of choice was the OS .15 FP and would like to keep using them, so am researching other engines which give about the same performance.The rules are:

Engine size- .15max, which can tach no more than 16,000 using 7x6 prop, 15% nitro, max.
Aircraft Weight- min. 2.5 lbs, dry

I am trying to find a .15 FP, but don't like the idea of running a discontinued engine ( expensive parts if even available from OS) Haven't run engines this size before, so am looking for some advice from you experts. We are looking for a user friendly unit that will take some abuse, and are considering the following:

- OS .15 LA -has fair power, but reliable and sturdy, we hear. About $55

- Magnum Xl.15 - the combat guys seem to like these, great price, now on sale for $45.Don't know if these are a new generation of magnums, or the
same ones which have been out for awhile. I have been running a XLS.52 for about a year now and am very impressed with it.

- Thunder Tiger GP.15, makes good power, fairly rugged. About $ 50

- OS.15 cvs-more expensive, hear it has great power and tunes well. Only concern is it may be too hot with a 7x6 and exceed the 16,000 limit.

- Norvel .15 revlite, more expensive, makes great power, tunes well, but same concern as the OS-cvs

Am looking for comments from those of you who are running any of the above as to how they actually perform and how they compare to the OS .15 FP

Thanks, Joe