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Old 04-02-2008, 10:38 AM   #1
CarbonJames
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KX 85 gearing for Track days

what do you guys think i should be running out back on the 85 for these longer tracks??

I'm thinking a 38-40 rear gear with a 14, 15 front..
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Old 04-02-2008, 10:39 AM   #2
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what is stock?
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Old 04-02-2008, 10:49 AM   #3
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do whatever gearing lets you go all the way up in gears and topped out on the longest straight of the track, if you have to gear it for too much top end, sometimes you might have to compromise and gear down a notch so you can have good drives out of corners still....or you can just carry mad cornerspeed.

if you have a 15/40 stock.....try 15/38 or 16/38....you might lose a significant amount of drive though.
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Old 04-02-2008, 10:50 AM   #4
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15/38 for the longer tracks for sure
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Old 04-02-2008, 11:26 AM   #5
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14/54 ON IT NOW
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Old 04-02-2008, 11:28 AM   #6
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Going from a 54 to a 38 is a HUGE difference. Will the chain hit the bolts on the sprocket at that size? Maybe oughts try a 44?
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Old 04-02-2008, 11:39 AM   #7
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I'd go with the biggest front sprocket you can find and the smallest rear sprocket you can find (given that they fit your current chain). In my opinion its not worth changing out the chain and doing all that work on your minis (if well setup already) just to ride one big track.
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Old 04-02-2008, 12:28 PM   #8
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I'd go with the biggest front sprocket you can find and the smallest rear sprocket you can find (given that they fit your current chain). In my opinion its not worth changing out the chain and doing all that work on your minis (if well setup already) just to ride one big track.
that's why you're so slow Moe!!!!
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Old 04-02-2008, 12:40 PM   #9
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Going from a 54 to a 38 is a HUGE difference. Will the chain hit the bolts on the sprocket at that size? Maybe oughts try a 44?
trying a 44 is " trying out a $50 maybe" i think i'll just get the 39 which is between the 38 and 40 and i'll prolly be satisfied with that.. IF not then i'll change..
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Old 04-02-2008, 01:00 PM   #10
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Quote:
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trying a 44 is " trying out a $50 maybe" i think i'll just get the 39 which is between the 38 and 40 and i'll prolly be satisfied with that.. IF not then i'll change..
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Old 04-02-2008, 01:10 PM   #11
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Quote:
Originally Posted by CarbonJames View Post
trying a 44 is " trying out a $50 maybe" i think i'll just get the 39 which is between the 38 and 40 and i'll prolly be satisfied with that.. IF not then i'll change..
that is a HUGE amount of teeth reduced, i don't think you'll be pleased with the way it will ride afterwards.

My suggestion would be a +1 for the front, and maybe something along the lines of a 48/49 rear.....

going down near 20 teeth is a little outrageous. as i said earlier, sometimes you're just gonna have to sacrifice some top end for a good drive. unless you are a madman with cornerspeed, than by all means change the sprockets for top end.
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Old 04-02-2008, 01:34 PM   #12
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Quote:
Originally Posted by houseofpain View Post
that is a HUGE amount of teeth reduced, i don't think you'll be pleased with the way it will ride afterwards.

My suggestion would be a +1 for the front, and maybe something along the lines of a 48/49 rear.....

going down near 20 teeth is a little outrageous. as i said earlier, sometimes you're just gonna have to sacrifice some top end for a good drive. unless you are a madman with cornerspeed, than by all means change the sprockets for top end.
i'd rather spend 10-12$ for different fronts than $50 on rears, i'll try it and see how it works..
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Old 04-02-2008, 02:05 PM   #13
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Quote:
Originally Posted by Godsuki View Post
that's why you're so slow Moe!!!!
Explain...
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Old 04-02-2008, 02:12 PM   #14
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to make our motards go around oakhill we dropped 8 teeth in the rear and went up 2 in the front.

Last edited by jodyhudson; 04-02-2008 at 02:16 PM.
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Old 04-02-2008, 02:13 PM   #15
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since we are on the topic ...

how is gss for mini motards ... i need to decide on a decent gearing for my 88 and 107

im thinking 15/37 for both
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Old 04-02-2008, 02:15 PM   #16
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Quote:
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since we are on the topic ...

how is gss for mini motards ... i need to decide on a decent gearing for my 88 and 107

im thinking 15/37 for both
what is stock gearing on them ?
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Old 04-02-2008, 02:21 PM   #17
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stock 50 is 14/37

but these are bigger motors

josh was telling me to run ... 15/34 on them
both motors already have a 15 front on them just wondering what i should put in the rear
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Old 04-02-2008, 02:38 PM   #18
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Quote:
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stock 50 is 14/37

but these are bigger motors

josh was telling me to run ... 15/34 on them
both motors already have a 15 front on them just wondering what i should put in the rear
if stock is a 14/37... id try a 15/31 or 32.
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Old 04-02-2008, 02:56 PM   #19
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i guess on the track these things must run wide most of time since track isnt made for minis... ill see whats up

thx
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Old 04-02-2008, 02:59 PM   #20
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Quote:
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i guess on the track these things must run wide most of time since track isnt made for minis... ill see whats up

thx
u have 2 straights there that i top out my 450 motards on. so yeah. the 50s will be strung out quite a bit
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