i have a moki (2.10) and a .61 that use 0% nitro. the no nitro approach is a lot less corrosive on your engines btw. the 2.10 runs great (8000 rpm) and the .61 is sold with a 17,500 rpm on 0% nitro claim. i have yet to run the .61. we will see about that high of rpm. most european engines are designed to run on 0% nitro. i think they have very restrictive rules on nitro in europe.

david