gear ratio comparisons

100hp honda · Post by **100hp honda** » May 25th, 2009, 11:00 am

for fun i compared 4 different bikes with 4 different trannys. all results for the 3 big bores were done with 14/49 sprockets and at 6500 max rpm and 18" wheel. the 250 was calculated with 14/49 and also the stock 13/50 with 19" wheel, at 8000rpm rather than 6500rpm.

'89-'92 cr500 14/49
primary reduction: 2.520
1st- 1.750 (32mph)
2nd- 1.388 (41mph)
3rd- 1.150 ( 49mph)
4th- 1.000 (56mph)
5th- 0.870 (65mph)

'93+ cr500 14/49
primary reduction: 2.250
1st- 1.750 (32mph)
2nd- 1.388 (41mph)
3rd- 1.150 (49mph)
4th- 0.955 (59mph)
5th- 0.792 (71mph)

'96 ktm 550 14/49
primary reduction: 2.621
1st- 2.200 (25mph)
2nd- 1.500 (36mph)
3rd- 1.166 (46mph)
4th- 0.950 (57mph)
5th- 0.777 (70mph)

'04 cr250 stock 13/50
primary reduction: 3.000
1st- 1.800 (31mph)
2nd- 1.470 (37mph)
3rd- 1.210 (46mph)
4th- 1.000 (55mph)
5th- 0.869 (63mph)

14/49

1st- 34mph
2nd- 41mph
3rd- 50mph
4th- 61mph
5th- 70mph

http://www.youtube.com/user/500bigbore · Post by **Roostius_Maximus** » May 25th, 2009, 11:48 am

how about whippin up a crf450 and crf250 into that chart

100hp honda · Post by **100hp honda** » May 25th, 2009, 2:43 pm

who cares about the crf

. i would assume the R model is similiar to the CR

http://www.youtube.com/user/500bigbore · Post by **Roostius_Maximus** » May 25th, 2009, 2:54 pm

I just wanted it posted up so i could forward a link to a dumbass uncle who was on the rev limiter in the field with his crf450r in high gear, and i was beside him screwing arround in 4th with the '88 on 14/51 gear. Somehow when i was busy messing with an open boot latch he passed me and got home that night all horned up about beeing faster than a 500. I heard it from dad and bro that he topended me on the field, WHAT? NFL! expecially when that '88 topends my other 500 bikes hardcore, even when bro is on the others at 50lbs lighter.
Some people are just a fist-magnet
You'd think that the guy would realize something when he and a dude on a crf250r leave ahead of us, and get passed by 3 500's on the back tire while they're PFFFFFFFFFFFFFFAPP'ing along in high gear and on the stop

http://www.youtube.com/user/500bigbore · Post by **Roostius_Maximus** » May 25th, 2009, 2:56 pm

Sorry about the rant, heres what gear i got figured out

those 450's are F's, some idiot for got that part

100hp honda · Post by **100hp honda** » May 25th, 2009, 8:10 pm

ya i didnt have any info on the 450. i have alot of tranny info for various year KTM 2stokes. i could post it tomorow, not that anybody would find it useful but ill probly post it.

dannygraves · Post by **dannygraves** » May 25th, 2009, 10:22 pm

that ktm trans looks to have a really nice gear spread with a much lower 1st gear, you could run some really tall gearing on it and not have to sacrifice much 1st gear control.

CR500R7 · Post by **CR500R7** » May 26th, 2009, 3:25 am

Good idea 100hp honda.

http://www.youtube.com/user/500bigbore · Post by **Roostius_Maximus** » May 26th, 2009, 6:14 am

that '08 ktm 450 the lil cuz has goes WAY faster than the honda

100hp honda · Post by **100hp honda** » May 26th, 2009, 8:16 am

dannygraves wrote:that ktm trans looks to have a really nice gear spread with a much lower 1st gear, you could run some really tall gearing on it and not have to sacrifice much 1st gear control.

that low first gear would be handy for alot people. where i live is pretty much open sagebrush so the 1st gear wont benefit me really.

BannedCR500Riders.com

gear ratio comparisons

gear ratio comparisons