Top speed question, GEARING for street use.


30 replies to this topic
  • wickedsprint

Posted February 19, 2006 - 04:41 PM

#21

Its interesting that the new 05 and 06's come with 15/45 stock now .



I havn't double checked cause I hadn't heard this but I am pretty sure mine still has the 14/48, it feels geared very short.

  • Mudshark

Posted February 19, 2006 - 05:03 PM

#22

I havn't double checked cause I hadn't heard this but I am pretty sure mine still has the 14/48, it feels geared very short.


Painkilla's from New Zealand... over here in the States theyre still 14/48 stock

  • 2000 xr650r

Posted February 20, 2006 - 03:09 PM

#23

I also tried tracking a 16 tooth cs down with no luck. Good idea with th 16, but I am going with 15/48 to keep my good low end. 15/45 may be the best for dual sport. Not sure but i like the power with 14/48 and want to keep it somewhat.

  • Mudshark

Posted February 20, 2006 - 03:18 PM

#24

Cool... I'm running 15/48 now and it wants longer legs still.... It'll still power
wheelie in 3rd... 45 might be a bit too long though, I'll try a 46. just one tooth
but it'll make a difference.
JT makes all sizes and you can pick one up for about 28 bucks through
Cycle Depot.

  • BIGGITY

Posted February 20, 2006 - 03:22 PM

#25

Cool... I'm running 15/48 now and it wants longer legs still.... It'll still power
wheelie in 3rd... 45 might be a bit too long though, I'll try a 46. just one tooth
but it'll make a difference.
JT makes all sizes and you can pick one up for about 28 bucks through
Cycle Depot.


15/48 is the gearing for Score International Races....(Baja). You'll have plenty of speed with that gearing and still have enough low end for the slower stuff. :thumbsup:

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  • Mudshark

Posted February 20, 2006 - 03:42 PM

#26

15/48 is the gearing for Score International Races....(Baja). You'll have plenty of speed with that gearing and still have enough low end for the slower stuff. :thumbsup:


Yup, they say:
"Final drive gearing of 14/45 for BITD and 15/48 or 15/47 (Mexico) for SCORE events offering a smoother power delivery and the best (forwards) wheel placement."

What's BITD stand for? .....

  • BIGGITY

Posted February 20, 2006 - 04:44 PM

#27

Best in the Desert... :thumbsup:

  • 2000 xr650r

Posted February 21, 2006 - 02:33 PM

#28

Found a 16 tooth cs sprocket for 650r. Sprocketspecialists.com Part# is 617-16.

  • Mudshark

Posted February 21, 2006 - 05:29 PM

#29

Found a 16 tooth cs sprocket for 650r. Sprocketspecialists.com Part# is 617-16.

Dude.. youre the man! ..... but heck for $40 I could get a Aluminum
rear 46... Then again it is easier swapping out the front than the rear.
Thanks 2000 xr650r, you'll not belive how I've searched for that 16 :thumbsup:
Plus it'll "shorten" the chain and not make it longer like a 46 rear would. Plus 1 for you! :thumbsup:
I wonder if there's room inside the sprocket cover for a 16T ?

  • LotsOfBikes

Posted February 21, 2006 - 09:42 PM

#30

For those of you who like to see numbers and graphs:
(The numbers are exceptionally close to Max Power's numbers)

XR650R with 15/48 sprockets

XR650R with 15/45 sprockets

Looking at the slight difference in lower speeds, and the outrageous torque of the 650R, 15/45 probably won't feel any different at the lower first gear speeds.

  • Mudshark

Posted February 22, 2006 - 02:56 PM

#31

For those of you who like to see numbers and graphs:
(The numbers are exceptionally close to Max Power's numbers)

Looking at the slight difference in lower speeds, and the outrageous torque of the 650R, 15/45 probably won't feel any different at the lower first gear speeds.


Thanks LotsOfBikes.... 70mph at around 5000rpm sounds sweet to me. :thumbsup:
now that you could do all day and the motor will fall asleep. :thumbsup:





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