gasmask34 Posted November 20, 2015 Report Share Posted November 20, 2015 in 1/8 mile drag im running a 19/34 f/r sprocket. its pulling well pass an 1/8 mile. do I need to go up on the rear sprocket or go down on the front sprocket. trying to get the most in 1/8 mile. after that the race is over. Quote Link to comment Share on other sites More sharing options...
Zillaguy Posted November 20, 2015 Report Share Posted November 20, 2015 17f will let it wind out quicker Quote Link to comment Share on other sites More sharing options...
m671054 Posted November 20, 2015 Report Share Posted November 20, 2015 Both things you mentioned change the ratio the same direction. Just in different amounts. Quote Link to comment Share on other sites More sharing options...
sleeper06 Posted November 20, 2015 Report Share Posted November 20, 2015 17-38, clutch tune will change with gearing changes a lil Quote Link to comment Share on other sites More sharing options...
gasmask34 Posted November 20, 2015 Author Report Share Posted November 20, 2015 Thanks Quote Link to comment Share on other sites More sharing options...
SlowerThanYou Posted November 21, 2015 Report Share Posted November 21, 2015 As you have figured out, 19/34 doesn't allow you pull the rpm needed in the 1/8. Sleeper pointed you in the general area you should be in. IMO, gearing is set for RPM you wish to achieve at the set distance you are running/racing. In most cases you want to be at minimum, the rpm your motor makes peak HP. Example: motor makes 100 hp at 9,700 rpm. The minimum rpm you should shoot for is 9,700 rpm in the gear you are crossing the finish line in. Now, on most of our motors we try to be above that minimum by a certain amount of rpm, to achieve the quickest/fastest times . Sometimes as much as 1,000 rpm higher depending on different factors like: rider/bike weight, motor size, distance, just to name a few. 1 Quote Link to comment Share on other sites More sharing options...
gasmask34 Posted November 22, 2015 Author Report Share Posted November 22, 2015 So start with 17/38 gearing. If I need more do I go up on the front sprocket or the rear sprocket? Quote Link to comment Share on other sites More sharing options...
possum Posted November 22, 2015 Report Share Posted November 22, 2015 First head to walmart and buy some clues Quote Link to comment Share on other sites More sharing options...
SlowerThanYou Posted November 22, 2015 Report Share Posted November 22, 2015 So start with 17/38 gearing. If I need more do I go up on the front sprocket or the rear sprocket? 17/38 gearing = 2.24 ratio, 38 divided by 17 = 2.2352941 gets rounded up to 2.24 If you need more rpm then the ratio provided (2.24). The ratio needs to be higher & just the opposite for less rpm. Get a ratio chart or do the simple math of rear sprocket divided by the front sprocket to get your ratio. Quote Link to comment Share on other sites More sharing options...
gasmask34 Posted November 23, 2015 Author Report Share Posted November 23, 2015 Thanks Quote Link to comment Share on other sites More sharing options...
gasmask34 Posted November 23, 2015 Author Report Share Posted November 23, 2015 Possum, keep ur thoughts any opinions to yourself. If u cant put out helpful information continue suck Dicks. That's all ur mouth is good for. U got something smart to alot of post. Keep out of people post if u can help. Quote Link to comment Share on other sites More sharing options...
possum Posted November 23, 2015 Report Share Posted November 23, 2015 I see your pussy lips got hurt Quote Link to comment Share on other sites More sharing options...
sleeper06 Posted November 23, 2015 Report Share Posted November 23, 2015 Lol Quote Link to comment Share on other sites More sharing options...
gasmask34 Posted November 23, 2015 Author Report Share Posted November 23, 2015 Yea that's wat bitches do. Quote Link to comment Share on other sites More sharing options...
trickedcarbine Posted November 25, 2015 Report Share Posted November 25, 2015 I see your pussy lips got hurtI've snagged my labia on the toilet seat. It kinda hurts... 2 Quote Link to comment Share on other sites More sharing options...
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