ZX9R sprockets

SocialSecurity · Post by **SocialSecurity** » Sat Jul 01, 2006 11:20 am

i did a little shopping around and my prefered supplier only had +1 and +3 sprockets in their catalogue, i only wanted a very slight change in gearing so went the +1 ...

it fit easily under the chain, ended up being about 1 notch looser than the stock 41 tooth

the gain is noticeable, very subtle tho... i like it

hopefully my speedo isnt too far out of whack

wisc · Post by **wisc** » Mon Jul 10, 2006 3:58 pm

i was thinking 100/110km/h at 4200RPMish/4400RPMish was a bit high and wanted to change that so it was a little more cruizer on the freeway...

Question is 4200ish to high, would it be better to sit at a lower RPM (say something like 3500) or is it already at the best mix of power/economy?

anyone have any ideas?

Maty10 · Post by **Maty10** » Mon Jul 10, 2006 7:35 pm

wisc wrote:i was thinking 100/110km/h at 4200RPMish/4400RPMish was a bit high and wanted to change that so it was a little more cruizer on the freeway...

Question is 4200ish to high, would it be better to sit at a lower RPM (say something like 3500) or is it already at the best mix of power/economy?

anyone have any ideas?

4200 too high

Stock '02 6rs run 5000 @ 100ks, and its worse on the barras (5400 or something?)

I-K · Post by **I-K** » Mon Jul 10, 2006 9:16 pm

Maty10 wrote:4200 too high Stock '02 6rs run 5000 @ 100ks, and its worse on the barras (5400 or something?)

'02 ZX6 redlines at 14500rpm, '03 ZX6 at 15500rpm, ZX9 at 12000rpm.

SocialSecurity · Post by **SocialSecurity** » Mon Jul 10, 2006 11:37 pm

i agree that the 9R can be alittle bit buzzy on the highway in 6th, but you wouldnt want the gears to be any longer in the earlier cogs... and going +1 on the rear definately makes it more fun, im sure +2 would be better but wouldnt wanna go much more than that personally... still bareable on the freeway with +1

if you find its harsh on the hands during cruise, try turn your pilot screws out half a turn

wisc · Post by **wisc** » Wed Jul 12, 2006 11:38 am

thanks for those replies

I was thinking about making 6th taller and leaving the rest alone, not sure if i could fit the larger sprocket up there and wondering how much of a difference it would make as most of of the journey to work is on the freeway. so I'm sitting on 100 without accelerating/changing to much, if i really need to i could flick to 5th...
yeah its a 9...so that RPM range is normal.
thinking about best economy and whats best for wear and tear on the engine.
anyone got any ideas?

Thanks

Daniel.

SocialSecurity · Post by **SocialSecurity** » Wed Jul 12, 2006 4:06 pm

i would say the modifications to the gearbox would be ... an experience

it wont make much different to economy, certainly not enough to warrant the sluggish take offs in first gear (if you just changed sprockets)...

wear and tear, it would make absolutely no difference that you could measure.