Chain pitch and sprocket sizes

[Visitor Q]

Hey all, got a second hand bigger rear sprocket for my cbr, here, and ive just realised standard 'pitch' for my year of cbr is 530, and this one is

240 , 520 , 49 tooth

So... whats the crack. Can i buy a 520 front and chain and thats that? What will be the result?

Oh and i do realise with a 49 (+7 i think) rear the fronts gonna be lighter then kate moss's left breast, but... i still think the front sprocket should come down one, or possibly two.



Good job i hate motorways.
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[Visitor Q]

Oh and i forgot to add, how can i order a standard geared but smaller (520) pitch sprocket so it still fits where it should? And any good way to ascertain what chain length i need?
____________________
China traffic/travel bike vid - When I make a sweeping statement, please add the word 'statistically' in to the sentence before you bitch...
From September 2014 to January/February 2015 I will not be using any English, nor reading any. As such, I won't be on here. PM at will, but I won't be checking/posting unless in emergencies. Certainly not for the first couple of months. Please berate me savagely if I break that rule...

[?M?gg????]

You can buy a 520 front look at
https://www.moto-racing.co.uk/item--Renthal-Front-Sprockets-520-RACE-USE-Honda-CBR600-91-98--CBR600+Ren+Race+Sproc+Fr+91-98.html and a 520 chain (let you find that yourself) but they are meant for track use and you may find it expensive in the long run on new chains, the plus side is a couple of Bhp extra.

The standard sprockets on a 96 CBR are 15-43 giving a ratio of 2.8666666 to 1. With the 49 on the rear you gat a ratio of 3.2666666 to 1 which is quite a difference so I wouldn't go any smaller on the front unless you want to go everywhere on just the back wheel.

Chain length, the standard is 108 links so with this rear sprocket you want a 114.
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Bandit 600, TDM 850,Bandit 1200
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[Chriss]

I want to go up to 49 on my D6 on the back, but then the speedo would be miles out too right? My speedo runs off the gearbox (somewhere), which also means it'll clock up miles quicker. I was wondering if it's possible to get the speedo 'fixed'. I've also gone down a tooth i nthe front.
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TheShaggyDA: I've got 3 or 4 pairs that predate my wife, so at least 11.5 years old.

[?M?gg????]

[Kickstart]

Hi

With an electronic speedo you can get a speedo healer to which is adjustable for how much you need to correct the speedo.

A 520 chain will not last as long as a 530.

Also, given how cheap sprockets are I would just buy new. Not really much point in halving the life of a ~£60 chain (about right for a 530) to save a couple of quid on a £10~£15 sprocket.

Also watch out for the chain guard. You might land up having to remove or modify it to give clearance for the larger sprocket.

Suspect you will not need to go for a 114 link chain. The chain is only going round about half of the extra teeth at any one time, so a 112 link chain might do it. However given that you can remove links easily but not really add any, go for a few more that you think you need and chop out the extra when you fit it.

All the best

Keith
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[Kickstart]

[Visitor Q]

Yeh meant to reply last night but my computer wasnt letting me post. Which is retarded really.

Anyway ive bought a 520 frotn and chain. Keith i know you are right, but ive already bought the sprocket (and now the front and chain) so canni go back now.
____________________
China traffic/travel bike vid - When I make a sweeping statement, please add the word 'statistically' in to the sentence before you bitch...
From September 2014 to January/February 2015 I will not be using any English, nor reading any. As such, I won't be on here. PM at will, but I won't be checking/posting unless in emergencies. Certainly not for the first couple of months. Please berate me savagely if I break that rule...

[?M?gg????]

Keith, you are right of cause I just had a momentary lapse of reason
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Bandit 600, TDM 850,Bandit 1200
One by one the penguins steal my sanity.

[beckford]

Digging this old thread up but heres my scenario!

I currently have a 15/50 on my R1. Now ive just brought the standard 16/43 as my speedo is out by silly numbers, and the bike is a bit to lively for my likeing

Put the sproket back on and hey presto, chain is looser then a prostitute.

The chain is fairly new, so i was thinking of knocking a few links out? Do you think this is a bad idea, as i dont want to go for a ride and find the chain wrapped round my leg

Any ideas? dont really wanna fork out 100 notes for a new chain!