new chain when changing rear sprocket?
#1
Member
Thread Starter
Join Date: Jun 2011
Posts: 43

I recently bought a 2005 600rr with a 47 tooth on the rear.
The acceleration is fun, but it seems to respond less smooth on the throttle.
Im thinking of switching it back to stock or somewhere in between.
Is there a way to calculate when and if i need to adjust my chain.
Thanks!
The acceleration is fun, but it seems to respond less smooth on the throttle.
Im thinking of switching it back to stock or somewhere in between.
Is there a way to calculate when and if i need to adjust my chain.
Thanks!
#2
Senior Member & Lord of The Man Cave
Join Date: Dec 2009
Location: St. Louis, MO
Posts: 1,292

How many miles are on the old chain? If the chain is fairly worn and you install just a new sprocket the chain will wear it down somewhat faster than if you replaced both front and rear sprockets and chain.
You can find kits that have all 3 for less than buying each component individually.
You can find kits that have all 3 for less than buying each component individually.
#3
Member
Thread Starter
Join Date: Jun 2011
Posts: 43

The complete chain set is fairly new.
Really wanna know if I can use the same chain lenght of the 47t for a 42 tooth for example.
I guess there's some sort of formula for that right?
Really wanna know if I can use the same chain lenght of the 47t for a 42 tooth for example.
I guess there's some sort of formula for that right?
Last edited by bobobob; 06-06-2014 at 04:12 PM.
#4
Senior Member & Lord of The Man Cave
Join Date: Dec 2009
Location: St. Louis, MO
Posts: 1,292

There might be a formula but if you're going from a 47T to a 42T you could just install everything, move the chain adjusters to their shortest positions, wrap the chain around the sprockets and see if any links need to be removed.
Do you have a chain breaker/rivet tool?
Do you have a chain breaker/rivet tool?
#6

If your using the same chain then it would need a few links cut off. You might be able to by another master link, but if your replacing one sprocket why not just replace both sprockets and the chain and do it right? Its really not that expensive if you already have the tools to do it.
#8

You can cut the chain by carefully grinding down the rivets from the link to be removed with an angle grinder, just go easy on it so you don`t fry the seals. But on bikes this powerful it`s heavily recommended to NOT use a clip style master link, I`ve succesfully riveted one chain with a small vice and a ball head hammer but it` s really up to you can you do it or let a shop take care of it for you and have peace with it and know it`s done right.
There are numerous different calculators for the sprockets in the net
https://www.rbracing-rsr.com/chainlength.html
REBEL GEARS CUSTOM MADE MOTORCYCLE SPROCKETS ANY SIZE
Gearing Commander: Motorcycle Speed, RPM, Chain & Sprockets Calculator
Here`s a few, took me a minute to google and link.
There are numerous different calculators for the sprockets in the net
https://www.rbracing-rsr.com/chainlength.html
REBEL GEARS CUSTOM MADE MOTORCYCLE SPROCKETS ANY SIZE
Gearing Commander: Motorcycle Speed, RPM, Chain & Sprockets Calculator
Here`s a few, took me a minute to google and link.
#9
Member
Thread Starter
Join Date: Jun 2011
Posts: 43

So took the rear wheel out, unbolted the sprocket, put the "new" one on, put the wheel back on, slid the chain on....
and...
previous owner put on a 520 kit instead of the oem 525
Mattson: thanks for the links!
and...

previous owner put on a 520 kit instead of the oem 525
Mattson: thanks for the links!
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