Yeh my Mg66 runs 7mm venturi,25% fuel ,go T4 plug,alloy .3mm + one .1mm copper shim...4mm shims total (well it will once I run it in again anyway) and I get regular 12m40 runtimes.I'm fast but very smooth on the throttle though , however even in nutter mode I can get over 10 minuutes .
The fuel thing though..Pretty much all the guys here run the 33% but I hated it when I tried it.Negligible performance increase over the 25% but the tuning was way harder to get spot on and it ate plugs at a frightening rate if I was even a fraction on the lean side.I don't see the need for anything over 25% and according to our French federation they are limiting nitro content to 25% max anyway for 2011.So I guess there will be a lot of 33% part containers being given away this xmas over here
In my 808 with the MG66 I can leave guys running 33% with a 9mm carb,no insert and fuel stops every 6 minutes down the straight ..They don't much like it though!
should see the looks on their faces when I say 10 minute stops for me please.Muahahahahaaa