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Have you got the engine properly earthed to the frame ?
Oh ok i though you already had the carb of when you put the 60 jet in. When you check look for gold colored plate with small holes fitted at the...
Is the bronze plate fitted to the mouth of your carb ? I'm guessing it's not, if its not your 60 main jet will be too small.
Jack your rollers are too heavy you should have around 5g rollers 6.3g is way too heavy. It should go fine with lighter rollers it may want...
I'd buy as much petrol powered garden equipment as i could and religiously use them every day at... maximum rpm with a 20:1 oil mix lawnmower...
The plastic transmission cover in not essential remove it and fit a typhoon air scoop. Alot of people (including me) remove the plastic cover and...
Where are you based mate ?
A 50cc exhaust will fit but the dimensions will be out of whack and it won't perform properly... Years ago I had a speedfight 50cc with a malossi...
Thinking about selling my c21 comes with bracket and flanges but no silencer if anyone's interested I'll put up pics ect
Look on google ect for pics of a runner 125 2 stroke frame mate
A 100 main is a ball park figure for a 25mm you may need to go up or down a few depending on your setup.
The brutal acceleration had me going is your "large bike" a cbf 125 or something ? haha, on a serious note as stated above put slightly heavier...
75 will deffo be too big i had a 70 in mine with a slightly higher spec and it ran like a dream.
Back in 2009 i used to take my converted runner to the old motorcross track everyday.
