Atlbanshee Posted August 6, 2015 Report Share Posted August 6, 2015 Need some help . Currently im running 19-39 On a 421 cub 1/8 mile With 180 lbs jokey Bike is slow but runs good thru all the gears If a put a 36 or 34 in back it will help or will make it slower ? Sent from my iPhone using Tapatalk Quote Link to comment Share on other sites More sharing options...
Bennett131 Posted August 6, 2015 Report Share Posted August 6, 2015 That would give you more top speed, I don't think you're going to fit that small of a sprocket on the back though. What kind of hub are you running? If it's a stock hub I think the smallest you can go is 38 or 39 tooth. Quote Link to comment Share on other sites More sharing options...
Atlbanshee Posted August 6, 2015 Author Report Share Posted August 6, 2015 I bought a Honda hub that way i can go with a36 or smaller Sent from my iPhone using Tapatalk Quote Link to comment Share on other sites More sharing options...
Bennett131 Posted August 6, 2015 Report Share Posted August 6, 2015 You have some pretty serious gearing already. What is your tire size in the rear? Quote Link to comment Share on other sites More sharing options...
Atlbanshee Posted August 6, 2015 Author Report Share Posted August 6, 2015 20s Sent from my iPhone using Tapatalk Quote Link to comment Share on other sites More sharing options...
Bennett131 Posted August 6, 2015 Report Share Posted August 6, 2015 With 20 inch tires it should hit just under 100 mph (if internal gears are stock) I'd say you have another issuie. Quote Link to comment Share on other sites More sharing options...
Atlbanshee Posted August 6, 2015 Author Report Share Posted August 6, 2015 Top speed now is at 96 in 1/8 Sent from my iPhone using Tapatalk Quote Link to comment Share on other sites More sharing options...
sheerider11 Posted August 6, 2015 Report Share Posted August 6, 2015 Change them. But slow is a vague word. Acceleration slow? Top speed slow? Clutch set up? Tire pressure? Bike set up? There's a few guys here that take drag racing serious. Maybe you can get some info from them. Quote Link to comment Share on other sites More sharing options...
Atlbanshee Posted August 6, 2015 Author Report Share Posted August 6, 2015 Top speed is slow Sent from my iPhone using Tapatalk Quote Link to comment Share on other sites More sharing options...
Atlbanshee Posted August 6, 2015 Author Report Share Posted August 6, 2015 I have 2.86 ratio stock straight cut gears Sent from my iPhone using Tapatalk Quote Link to comment Share on other sites More sharing options...
Atlbanshee Posted August 6, 2015 Author Report Share Posted August 6, 2015 Thanks zillafreak & sheerider11 Sent from my iPhone using Tapatalk Quote Link to comment Share on other sites More sharing options...
Bennett131 Posted August 6, 2015 Report Share Posted August 6, 2015 So you're doing 115 in an 8th and that's slow? Quote Link to comment Share on other sites More sharing options...
Bennett131 Posted August 6, 2015 Report Share Posted August 6, 2015 So you're doing 115 in an 8th and that's slow?Sorry I guess you said you were doing 96...I'd try going the other way with gearing. Maybe go up a few teeth in the rear. Quote Link to comment Share on other sites More sharing options...
Atlbanshee Posted August 6, 2015 Author Report Share Posted August 6, 2015 Yes 96 top speed thats what it does now . I know it need to do around 104 whit stock chassis Sent from my iPhone using Tapatalk Quote Link to comment Share on other sites More sharing options...
Atlbanshee Posted August 6, 2015 Author Report Share Posted August 6, 2015 Really ? like 40 tooth Sent from my iPhone using Tapatalk Quote Link to comment Share on other sites More sharing options...
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