22johnq

what % fuel should i use on a 21 engine ..thanks

cooldriver385

I'd recommend the most common fuel at your hobby shop. Most people run 20% nitro. That's probably where you wanna go. Tunes well, good power, good engine life.

22johnq

thanks

lez1troubles

Look for sole thing around the 20°-25° nitro contents. If you can get it in the U.K try SideWinder 25°.[8D]

lez1troubles

By the way, the more nitro in your fuel the faster your engine is going to run but then again your temperatures will also go higher.
Your engine temps want to be some where around the 120°C range. Need any more help just ask.

The_Shark

i run 30 in my jammin turbo plug engine, its very forgiving in poor weather and has ton of pep, its just a bit overkill for bashing. 20% will work, make sure it has good lubes and about 15-18%