mx1986 Posted March 14, 2013 Report Share Posted March 14, 2013 I got a 10mil cub on alky. Is the 2.68 ratio to much for the bike would stock gear ratio be better Quote Link to comment Share on other sites More sharing options...
Finch Posted March 14, 2013 Report Share Posted March 14, 2013 2.68 is close to the same as running a tooth smaller on the front. If that helps any. Quote Link to comment Share on other sites More sharing options...
m671054 Posted March 14, 2013 Report Share Posted March 14, 2013 Other way. Stock gear and 17 counter and 2.68 16 counter are about the same right? Quote Link to comment Share on other sites More sharing options...
sleeper06 Posted March 14, 2013 Report Share Posted March 14, 2013 I run the 2:36 primary on a few stock and cp 4 mils,I'm sure that 10 mil can handle it Quote Link to comment Share on other sites More sharing options...
Finch Posted March 14, 2013 Report Share Posted March 14, 2013 Other way around Quote Link to comment Share on other sites More sharing options...
SlowerThanYou Posted March 14, 2013 Report Share Posted March 14, 2013 Other way around This is the way we figure our gearing changes, especially when we do a primary ratio change. The stock ratio was mentioned 2.86 & a 2.68 ratio. That's a change of .18 gearing difference. Now a 17 front sprocket was mentioned, but no front (comparison) & no rear was, but we'll use a 16/41 = 2.56 ratio rounded down. So, let's take a 1 tooth front sprocket change like mentioned, 17/41 = 2.41 ratio. One tooth is .15 difference, That's a pretty good comparison. The one tooth comparison doesn't work the same when getting to the bigger front/smaller rear sprockets. Let's take the 17/41. 2.41 ratio & a 18/41 = 2.28 ratio rounded up. That's a difference of .13, so, it starts to become bigger difference. This is what we prefer to do & gives the exact math for the gearing change. This really helps when you have a known baseline gearing set-up. Then you want to change the primary gear, but can work with other scenarios also. We just did this drill for our DMX for a starting baseline. Our old primary 1/4 mile set-up was a 17/36, 2.12 ratio with a 2.86 primary. We take the sprocket ratio & add it to the primary ratio, 2.12 + 2.86 = 4.98 ratio. That gives us a known MPH at a certain rpm with our tires & our overall combination. Now, we changed our primary ratio on our DMX to a 2.54, add that to our known combo 2.54 + 2.12 = 4.66 ratio. We used a gearing/mph calculator to figure the mph for a given rpm. It gives us around 12 mph more that the old set-up, but at a lower rpm. It puts us close to what we are trying to run & will fine tuned from there. Quote Link to comment Share on other sites More sharing options...
possum Posted March 15, 2013 Report Share Posted March 15, 2013 slower knows what hes talking about! Quote Link to comment Share on other sites More sharing options...
sleeper06 Posted March 15, 2013 Report Share Posted March 15, 2013 if it wasnt for slowers input and tedder i would still be in the high 11s they really helped me step my game up Quote Link to comment Share on other sites More sharing options...
SlowerThanYou Posted March 15, 2013 Report Share Posted March 15, 2013 Thanks guys! Quote Link to comment Share on other sites More sharing options...
rubberneck Posted March 16, 2013 Report Share Posted March 16, 2013 when comparing overall gear ration wouldnt you multiply the primary x the sprocket ratio rather than add them together? Quote Link to comment Share on other sites More sharing options...
SlowerThanYou Posted March 16, 2013 Report Share Posted March 16, 2013 when comparing overall gear ration wouldnt you multiply the primary x the sprocket ratio rather than add them together? I stand corrected, you are right. The last 2 paragraphs are incorrect. You multiply the primary ratio x the sprocket ratio. Plus, you can throw in the transmission ratio also for whatever gear is being used. Quote Link to comment Share on other sites More sharing options...
stroking Posted July 25, 2013 Report Share Posted July 25, 2013 if the straight cuts numbers are 59tooth on basket what ratio is that ? smaller gear is 21tooth Quote Link to comment Share on other sites More sharing options...
J-Madd Posted July 25, 2013 Report Share Posted July 25, 2013 2.81. Sounds like Hinson. Quote Link to comment Share on other sites More sharing options...
stroking Posted July 30, 2013 Report Share Posted July 30, 2013 yeah its hinson ...trying to sell and wanted to know the correct ratio gears and basket for $400 shipped Quote Link to comment Share on other sites More sharing options...
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