Ducati Sporting Club UK > Model Specific - Discussion, Technical Problems and Help > 998 / 996 / 916 / 748 > Gearing for 996R / 998S / 998R?

[John W]

Originally posted by Rattler
In the meantime, I'll be collecting gravel on the R6 later this month at Brands and maybe next month at Cadwell!!!

Tim

So will it be sporting big 'for sale' signs as you overtake everybody ?
Might be worth sticking one on the bottom of the fairing

[Rattler]

...seems like a plan!!!

[muttsnuts]

Tim, when are you at Brands, if I am off I might come along for a laugh, I mean look..... !

[nathanhu]

im on a 999s with 14-38 and it works a dream. the only difference being that the 998 uses a short travel throttle assy. if your using the bike on the track then go for it as who needs that high top end other than on the autobahn

[pguenet]

Rattler -

the Testastretta engines are more powerfull indeed and are happier revving and have lost a bit of that all out grunt of the SPS long stroke engine.

So logically thinking you should indeed lower the gearing to make the most of that engine even more so on the Testastretta than any SPS and BPs that you might have changed before.
The impact on top speed down the straights shouldn't be as critical either because the engine revs better.

Please make sure you advertise your first day out on the bike. I don't want to miss that!!

[Rattler]

...it'll be a private test session somewhere in Europe!!!

I might do one of the CSS 2 day camps early next year in Spain or similar!!

Tim

[998Addict]

Tim

I've done quite a bit of experimentation with this on my 998S race bike.

I currently run a 14/39 combination and despite the comments made above, it's still eminently rideable, but obviously lifts the front in second. On standard gearing, the bike just wasn't fast enough out of corners.

14/39 is good because (with a new chain, anyway), it's the largest combination you can get with a 96-link chain. Above that, you need to go to 98-links, which is too-long for 14/39, so you end up being unable to back-track.

I should point out also that when I say "largest", I am referring to keeping the eccentric in a reasonable position.

I suspect that now my chain has begun to stretch a bit, that a 40T rear may be possible too.

I actually used to race my Mille-R with a 15/46 combination and a guy I race against uses a 15/48.

I'm not sure how everyone here thinks a low-geared combination is something uncontrollable - look at 1000cc Production Club racing and you'll regularly see tuned GSX-R1000's running lower gearing than this.

14/39 Tim - JFDI!

[Edited on 15-10-2003 by 998Addict]

[Rattler]

.....its easy to change ratios etc, I'll probably start with 14/38 and see how that goes....

Thanks for the comments.
Tim

[lapman]

On my 998R tried 14/38, too rev'y. Back to 15/38 now with a "sensible" top speed of around 175. maybe!

The original 15/37 was a bit too long

Lapman

[skidlids]

Dean whats your rev limit on the 998R, gearing is something I will be sorting out before to long, but my motor is only a 998Bp so I will have to check what the standard gearing and rev ceiling are and work from there.
Kev