Pointy v Curvy gearbox - SV650.org

22-11-11, 10:50 PM

Does anybody know wether the gearbox is the same on a curvy and pointy? The reason I ask is that I race a minitwin (badly) and noticed that some (very quick) curvys run a tooth or two different rear sprockets. I have been told that the curvy boxes are different but have not been able to get a definitive answer.
Thanks

Sid Squid · 22-11-11, 11:13 PM

They're not completely identical, but the ratios are the same. At least all the ones I know are anyway.

23-11-11, 12:15 PM

From K5 onwards the selector star (or whatever its call cant remember exactly) is updated to reduce false neutrals but I have never had that problem on my normal curvy gearbox.

I dont believe there are any other differences apart from bearing upgrades.

They are probably running different gearing because they are carrying more speed out of the corners onto the straight.

andrewsmith · 24-11-11, 07:26 AM

It sounds like the final drive is running something like 14/47.

22-11-11, 10:50 PM	#1
thmjo1 Guest Posts: n/a	Pointy v Curvy gearbox Does anybody know wether the gearbox is the same on a curvy and pointy? The reason I ask is that I race a minitwin (badly) and noticed that some (very quick) curvys run a tooth or two different rear sprockets. I have been told that the curvy boxes are different but have not been able to get a definitive answer. Thanks

22-11-11, 11:13 PM	#2
Sid Squid No, I don't lend tools. Mega Poster Join Date: Jul 2003 Location: Skunk Works, Nth London Posts: 8,680	Re: Pointy v Curvy gearbox They're not completely identical, but the ratios are the same. At least all the ones I know are anyway. __________________ If an SV650 has a flat tyre in the forest and no-one is there to blow it up, how long will it be 'til someone posts that the reg/rec is duff and the world will end unless a CBR unit is fitted? A little bit of knowledge = a dangerous thing. "a deathless anthem of nuclear-strength romantic angst"

23-11-11, 12:15 PM	#3
hardhat_harry Guest Posts: n/a	Re: Pointy v Curvy gearbox From K5 onwards the selector star (or whatever its call cant remember exactly) is updated to reduce false neutrals but I have never had that problem on my normal curvy gearbox. I dont believe there are any other differences apart from bearing upgrades. They are probably running different gearing because they are carrying more speed out of the corners onto the straight.

24-11-11, 07:26 AM	#4
andrewsmith Member Mega Poster Join Date: Apr 2010 Location: Newcastle upon Tyne, Just south of salad dodging country Posts: 7,750	Re: Pointy v Curvy gearbox It sounds like the final drive is running something like 14/47. __________________ RIP Reeder 20/07/1988 - 21/03/2012. Always missed squire!!! Every year we meet old friends, gain some new ones, lose old ones and you always remember them all. “Live as if you were to die tomorrow. Learn as if you were to live forever.” Mahatma Gandhi

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