Bike Stuff > Two Wheel waffle for all

yet another. ... chain and sprocket thread

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Dermo:
Right ninjas I'm going changing the chain and sprockets on my 04 zx10r road bike. I'll probably wait till the end of summer and strip it down.
I'm thinking of changing the gearing too. I'm not sure whether to go down one or up two or both.
If I was to just go down one on the front sprocket would my chain adjuster give me enough slack to put back the standard front sprocket without replacing the chain?
If I change the gearing ill also have to get a speedo healer. Are any of the brands better than others? I think Healtech has a list of bikes on their website with altered sprockets and you program this information into the unit to suit. Can anyone confirm how accurate this method is?
Also I'm looking at a cheapo chain breaker/riveting tool on geeebay. Anyone here pick one up that they could recommend?
Thanks
Dermot.  :occasion14:

ZedThou:
I am -1 on the front and +2 on the rear and I find it perfect.  It is not for everyone though, so you may want to get a chain with an extra link or two in it and get both a standard size and -1 front sprockets so you can swap them about.  I use a Healtech speedo healer and it is perfect.  I had it on my Z1000 and swapped it to my ZX10R by just buying the loom as they are separate, so you can swap it from bike to bike.  With standard gearing the speedo is about 5% fast, for standard front +2 rear, the correction factor on mine is 9.6% and with the -1 front as well is 14.9%.  The Healtech calculator just needs you to put in your standard gearing and tyre size and new gearing and tyre size and gives you the correction factor.  You can store two correction factors in the unit so if you change the front sprocket, it takes a few seconds to change the speedo healer.  I taped my mobile phone to the bike with a GPS speedo program running and the speedo was reading spot on compared to the GPS speedo. 

If you want to see what differncve the gearing will make to the speed of the bike, try using this.  You can put in standard plus two other choices and compare the three.
http://www.gearingcommander.com/

I had also bought a Healtech XTRE to fit, but with the lower gearing, I don't find the lower power setting in the lower gears an issue and haven't bothered to fit it.

Dermo:
Cool.
Ok well if I go -1 on front the speedo should be reading accurate! Lol.
Was it much of an effort to fit the healtech? Is it hard to program?

ZedThou:

ZedThou:
Here is the gearing for each version of the ZX10R, front sprocket is 17 for all I believe.  So a stock rear sprocket from a Gen 3 will give you plus 2

2004-2005 Kawasaki ZX10R Stock Rear Sprocket Teeth: 39
2006-2007 Kawasaki ZX10R Stock Rear Sprocket Teeth: 40
2008-2010 Kawasaki ZX10R Stock Rear Sprocket Teeth: 41
2011-2014 Kawasaki ZX10R Stock Rear Sprocket Teeth: 39

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