chain conversion

[LarsLykkegaard]

Whats the easiest way to convert the KZ1000A to 520/525 chain - would like to have a smaller rear sprocket the orig. (cant remember what it is)

Thanks

[Garn 1]

Lars, I'm pretty sure your original 92 link 630 chain would have 15T front sprocket and a 35T rear (maybe 33).
This converts to an 18T front sprocket and a 45T rear on a 110 link 530 chain.
Hence, if you wanted to go with a smaller rear sprocket it would be a 43T.

Z1 Enterprises have a good conversion table on their site.
RegardZ.

[buzzard]

15 front 35 rear sprocket 630 chain, actually converts to 18 front and 42 teeth rear sprocket 530 chain x 110 links long.

[Garn 1]

Thanks buzzard, Yeah! It should be 42T rear, making a smaller rear 40T.
And I know both are available.
RegardZ

[LarsLykkegaard]

Thank you...but which model runs those rear sprockets??

[buzzard]

15t front x 35t rear sprocket on Z1, Z1A and Z1B's, this give a final drive ratio of 2.333. 15t x 33t sprockets on Z900 and Z1000, this gives a final drive ratio of 2.200. 18t x 40t sprockets in 530 chain would give a final drive ratio of 2.222 which is the same as your Z1000 setup. A smaller back sprocket will give you more top end assuming you have the power but less acceleration. Buzzard.

[jimmock]

Guyz,

This kinda thread gives me an 'ardon !!!

[zed1015]

If you are using the 6 bolt cush drive then most of the later Kawasaki 530 and 525 rear sprockets will fit e.g zxr750 / zx9r / zx10r etc as they kept the same stud spacing.
The front sprocket uses the 'Z13' spline pattern and a lot of Kawasaki's and Suzuki's use this so it shouldn't be difficult to find the combo you need

Check out the JT website below as all the info can be found there.
http://www.jtsprockets.com/catalogue/model/5342

[LarsLykkegaard]

thanks-'ill look into it
Run with 1197cc

[LarsLykkegaard]

Would a 18/38 530 be a killer for a KZ1000A -1200cc with ported head and k410 cams???

18/38 Is ratio 2.11
Orig its between 2.20 and 2.33......

Would it be highway ratio for that engine setup or allround??

/Lars

[zed1015]

You are in the right area with the gearing ( you are running 18" rear wheel ? ) but every engine is different and I would aim for as close to the 2.2 to 1 as possible .
Personally I would start with 18/40 and see how it goes.

[LarsLykkegaard]

Running 150/80-16, and if i calculate the orig one as 130/80-18 my new tire is arround 3% smaller than orig also meaning that the ratio will be a bit higher than 2.11 (closer to 2.2)

Lars

[zed1015]

I run 180/55/17 and 1.92 to 1 is the equivalent ratio of 2.2 with the 18"s.
Sound like you are in the right area.
I divided the circumference of the 18" tyre by number of sprocket teeth to get cm's travelled per tooth.
Then divided the circumference of the 17" (or in your case a 16") tyre by CM measurement found above to find the amount of teeth needed for the smaller wheels new sprocket.
You end up with a smaller rear sprocket that gives the same distance travelled per tooth.
Obviously you mostly end up with an odd fraction of teeth so have to decided whether to round up or down a tooth.

[LarsLykkegaard]

quit good webpage
http://gearingcommander.com/