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Bikes, Hints'n'Tips => FZS600 Fazer => Topic started by: mike26 on 16 October 2011, 11:22:20 am

Title: standard rear sprocket size?
Post by: mike26 on 16 October 2011, 11:22:20 am

anyone know the standard rear sprocket size and if so anyone used more or less teeth on the rear if so hows performance effected.
btw i do alot of motorway miles and high speed riding/filtering
thanks
mike

Title: Re: standard rear sprocket size?
Post by: Captain Haddock on 16 October 2011, 11:24:22 am

48 & 15 are standard sprocket sizes.

Title: Re: standard rear sprocket size?
Post by: mike26 on 16 October 2011, 11:46:52 am

so what do you think getting a 38t renthal sprocket will do ?

Title: Re: standard rear sprocket size?
Post by: Captain Haddock on 16 October 2011, 11:57:08 am

10 teeth is a big jump, it will make acceleration very sluggish and probably won't be able to pull 6th gear, I'd try 1 tooth extra on the front as the sprocket will be cheaper and you won't need to shorten the chain, 1 tooth on the front is about equal to 3 teeth off the rear.
If the engine can't reach the rpm it can't produce the bhp.

Title: Re: standard rear sprocket size?
Post by: limax2 on 17 October 2011, 10:18:30 am

Totally agree with all the Captain's comments. 10 tooth drop on back sprocket is way too much. You would probably have problems with chain rubbing on the swinging arm as well.
It would make 4th gear not much different to existing 6th gear with standard sprockets. Put another way, in top gear you would have approx 15 mph per 1000 revs instead of 12 mph per 1000 revs.

Title: Re: standard rear sprocket size?
Post by: mike26 on 18 October 2011, 11:53:53 am

ahh okay might go for a small change thought 44 on the back or something (i really need a new babe one however im gonna spin it round first)