Originally Posted by
1QwkSport2.5r
My ST S90K gets revved up a bit (tuned muffler) which makes it vibrate a good bit more... I advocate well balanced props (blades AND hub) and bubbleless tanks for them. No chance for bubbles then. Jett, and Tettra are two that come to mind. I have a Tettra 14oz that works well with the .90 and my 1.20 4-stroke.
I race Club40 and I use to race a lot of quickies, and Jett & Tettra bubbleless were the way to go. I have over a dozen Super Tigers and don't normally have problems with them.
The tank is the most important part of the whole set-up. The race planes rev anywhere from 16,500-17,200. Foam, balancing, and the bubbleless are why I never had a deadstick
in the last 5 years. Bubbleless are a little pricey and not everyone gets how to pump the fuel in, but a regular tank thats not leaking air or fuel will do just fine on any sport plane.