RE: Norvel Engine FAQ
Tsutomo,
I agree with what Andy says. Castor is important, but not essential in a norvel so long as you are not racing.
I have been tryng to buy all castor fuel here (Mie-pref) but I have not been able to find any appart from FAI 0%nitro fuel.
I have tried some different fuels here, blending high nitro fuel with methanol and castor oil to make my own synthetic/castor fuel.
I found a castor/synthetic blend fuel I have been using which I can recommend if you are interested.
Stefan