ORIGINAL: Flyboy Dave

I have two Tower .75's, they were the second to the tightest engines I've
seen. The tightest was a Jett 90L.

Now that I'm through cringing after reading your break-in story....I'll offer
my technique.....it's real simple. Heat the engine with a heat gun to take
away that awful pinch, and you won't hear that awful knocking. My first
Tower .75 knocked loudly on the first start-up, but it only lasted for a few
seconds. That's when I developed the heating technique. I sure works good,
and the engines will love you for it.

My Tower's turn the 11-7 1/2 MAS at 14,000 flat. That's the best prop I've
found for speed on my F-20. I tried a couple APC's at first....they were pathetic.

I do all my ABC engines now with the heat.

FBD.