Gearing change difference - 1 tooth F&B very noticeable?

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RichUK
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Gearing change difference - 1 tooth F&B very noticeable?

Postby RichUK » Thu Jul 27, 2017 8:16 am

When I bought my bike it came with a spare set of chain and sprockets, which was nice I thought.

Now I've looked into it a little I've realised that the front is 1 tooth down and rear is 1 tooth larger.
Firstly I realise how gearing changes affect things, and that the -1 on the front will have much more of an effect than the +1 tooth rear.

Easiest thing for me to do would be to just swap out the front.
Any negative effects from going down 1 tooth on the front - does the chain start eating the sliders for example?
I appreciate there will be a larger gap between the sprocket and the case saver afterwards but I'm not too bothered about that.

Finally, is it worth doing?

speedfiend41
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Re: Gearing change difference - 1 tooth F&B very noticeable?

Postby speedfiend41 » Thu Jul 27, 2017 8:49 am

-1 on the front is almost +3 on the rear, so that's a big change from standard. It must be a wheelie monster!

The good thing is sprockets are cheap and easy to change.
Superduke 990R single seater, MIVV's, tail tidy, LSL bars
MV Agusta 2011 F4, dripping with carbon, titanium Bodis exhaust, sounds like Armageddon

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bic_bicknell
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Re: Gearing change difference - 1 tooth F&B very noticeable?

Postby bic_bicknell » Thu Jul 27, 2017 9:20 am

Back in the day everyone who owned a 990 went one down on the front. I think it was to a 16 tooth (but can't be sure)

It was just accepted that this offered a better balance for rapid acceleration and top end speed. I'm still running a 16 tooth front but with a standard back.
Past: Honda CB125J, Honda TL125, 1963 Triumph Tiger 90, Yamaha RD250, Kawasaki KH250, Kawasaki 400 S3, Kawasaki KH400, Kawasaki Z400J, Suzuki GS750, Suzuki GS1000, Ducati SS900 Superlight, KTM LC4 Supermoto, Honda VFR 800i, KTM Superduke '07.

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jambox
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Re: Gearing change difference - 1 tooth F&B very noticeable?

Postby jambox » Thu Jul 27, 2017 10:23 am

Yeah the old bike came with a 17t, hence everyone went to a 16 to help the snatchy throttle. When the redesign came, it had a 16t as standard.
05/06 SD, too raw for the journos!


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