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Can’t launch in second


_arttt

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I know I know another gearing post but I’m at wits end

 

421 cub ported

35mm pwk carbs

172 main 52 pilot needle at 2nd clip

One turn out on the air screw

Gear ratio is 14/44

+8 swinger

22” 9 paddle at 5psi

And I’m 245-255lbs

 

I can’t launch in second for shit I tried 14/43 and idk if it’s just my body weight and gearing set up or my jetting at this point… any help would be appreciated.

 

 

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  • 2 weeks later...

@arttt Try changing your gearing. I’m somewhat on the heavy side at 230-235 lbs and I’m running a 15 tooth front sprocket and a 40 tooth rear sprocket with 20” rear tires. When I launch in 2nd gear it doesn’t matter if I’m on hard pack or in soft sand my front end will rise off the ground. 

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