530 front sprox J / GPZ / Unitrak types

[Al]

Looking for a 530 front sprocket with or without off-set for J-type motors with 17 teeth on it please.

AL

[simon gilling]

530 is the way to go, my Z1 has had 5310 X-ring on for over 10 years, works much better thatn 630. I use either Z650 16 tooth or an 18 tooth of a kawasaki VN800.

I would suggest a trawl through :-

http://www.jtsprockets.com/catalogue

When I last started to put together a guide, I found quite a few options for the 'J' motor sprocket.

good luck

Simon

[Al]

Thanks Simon. Had a good look through. The early ones Z1 A B 900 A4 / Z650 use a Z13 format for the front spline, J / GPZ / Uni uses a Z12 format for the spline.

AL

[j.b]

i think zzr11 is the way to go for 530 with a little offset

http://www.jtsprockets.com/catalogue/model/1200

[Al]

Thanks j.b that may well be the answer.

AL

[floydsz1]

I got a 530 17 tooth offset sprox for my J from jeff at z1enterprises.
http://www.z1enterprises.com/530-SS635- ... t-398.aspx

[big green bus]

JTF527 this is the one I used on my Gpz1100

[Al]

ZX10 B1- B3 Tomcat
JTF 527 " with 19mm off-set"
http://www.jtsprockets.com/catalogue/model/1183

JTF 528 "with 24mm off-set"

Thank you gents plenty of suitable alternatives to be had if you know where to look.

Thanks again

AL

[zed1015]

ZX10 B1- B3 Tomcat
JTF 527 " with 19mm off-set" AL

Beware!

The true offset measurement is that 19mm MINUS the width of the actual teeth which would make it around 12mm ish ?

Offset should be measured from inner to inner or outer to outer face, not inner to outer as in pic.

[Al]

Youre right Rob and it was me that introduced the subject of off-set with regard to that measurement.

Also relevant is the thickness of the core as i have found out. Not all these sprockets have the same dimension there which leaves the splined stub protruding a little and the sprocket even when tightened slops about on the output shaft causing it to need a spacer behind it which is what i have had to do.

Have also discovered that my sprockets are not in line either.
Meaning; no amount of spacing at either end will put them in the same plane!!!

AL

[zed1015]

There should be a sprocket nut that is recessed at the rear allowing it to tighten on the sprocket and not the spline ( I have a couple on the GPZ and 1000a gearbox's)
There is usually also a corresponding tab washer in that situation which locates on the spline and folds on to the nut to lock it.
You can use more than one tab washer at a time to 'shim' out the nut if the spline still interferes with just the one washer on.

[Al]

The J has a bolt in the centre. The sprocket core must extend beyond the end of the splines. The bolt has a fixed broad shoulder washer and beneath it a large spreader washer.
The non J specific front sprockets appear to have a thinner section at the core hence the need to pull the sprocket outward, flush or beyond the spline shaft using a spacer behind it.

At least that is what i have found with the sprocket that i have.

All's well though as i can now get a wider rear section tyre in it

AL

[zed1015]

Ah! Yes.
Was forgetting about the J's bolt.
Would be a good idea to turn down an old sprocket and make a splined spacer washer to make up the difference.