supermoto gearing

aloha450x · Post by **aloha450x** » April 17th, 2008, 6:16 pm

what would be a good gearing for the street. 91 motor. very rare short blast to 85 or so. be able to sit at around 55\60 without strain and raise serious hell in town. thanks

ou812 · Post by **ou812** » April 17th, 2008, 7:55 pm

15/46

aloha450x · Post by **aloha450x** » April 17th, 2008, 8:11 pm

so my 14\45 i have already shoul work ok. might be a little too rowdy under 60. haha

dannygraves · Post by **dannygraves** » April 18th, 2008, 7:30 am

for those close ratio gears, I would definitly run taller than 14/45, hoofarted runs that same gearing on his '92 that he only rides in the dirt and my '86 with the wide ratio on 14/49 could walk all over it as far as topend is conserned.
I would run 15/45 minimum, probably seriously like 15/40, you don't need much out of first to get going on the street.

aloha450x · Post by **aloha450x** » April 18th, 2008, 9:38 am

do you think I can still get some wheel spin with 15 40?[/youtube]

dannygraves · Post by **dannygraves** » April 18th, 2008, 9:57 am

sure!!

aloha450x · Post by **aloha450x** » April 18th, 2008, 10:24 am

sweet ill order some renthals.

Post by **AlisoBob** » April 18th, 2008, 10:47 am

40 wont fit the rear , will it?

I thought 43 was the smallest ....

dannygraves · Post by **dannygraves** » April 18th, 2008, 10:58 am

dewayne does a custom 30 something

Post by **AlisoBob** » April 18th, 2008, 11:02 am

I'm talking "bolt on"...

aloha450x · Post by **aloha450x** » April 18th, 2008, 11:26 am

just got off the horn with renthal and 43 is the smallest the us imports. they do make down to a 38 as per there website. western powersports is the only one who imports the 43. so im thinking 15 43 on a 91 motor should be ok. who id duane?

dannygraves · Post by **dannygraves** » April 18th, 2008, 11:45 am

15/43 sounds good!
DeWayne is in the approved vendor section. Hes a kickass builder and a racer, here is a nice racing shot I've got of him

pstoffers · Post by **pstoffers** » April 18th, 2008, 12:30 pm

A 35t is the smallest that will fit the hub..

Sprocket specialties will have what you need..

Caseys500 · Post by **Caseys500** » April 18th, 2008, 1:29 pm

I just ran my bike with 13/40 and I am gonna put my 14 on it since I can tell it will pull it just fine!

aloha450x · Post by **aloha450x** » April 18th, 2008, 5:58 pm

ok how about this. my chain was almost new so will it be long enough? was 14 45 will be 15 43. im thinking it will be good.

redrocket190 · Post by **redrocket190** » April 18th, 2008, 8:33 pm

http://rapidshare.com/files/108620149/2 ... lation.xls

1 more tooth at the counter shaft is worth about 3 less on the rear sprocket. Go up at the front first, because larger sprockets stress the chain less. Try out this gearing calculator. You should be able to get all the variables from the Honda manual. My Husky is geared to run 70-80 mph around 6,500 rpm.

Acid · Post by **Acid** » April 19th, 2008, 7:06 am

curently building mt Sm atm and wondered what gearing you guys think would suit

I was thinking along the lines of 15 43 (what i can get hold of locally)

I have 14 48 on it's Mx wheels

kball1313 · Post by **kball1313** » April 23rd, 2008, 1:12 am

I run 14/40 on my supermoto. You can still run the chain guard up front and hit good speeds on the top.

BannedCR500Riders.com

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