15 Tooth offset front sprocket for ZZR engine
Discussion
You could always fabricate one.
You would need a sprocket for a 1990 ZZR1100 (has the dish) and get a 15T sprocket for a later one (flat), machine the teeth off the 17T one and bore out the centre of the 15T one to suit and TIG weld them together?
I bought an ex-hillclimb ZZR1100 engine years ago and it had a 14T sprocket done like this.
Obviously accuracy of machining and quality of welding critical to make it work properly.
The 1990 ZZR engine has a shorter output shaft hence the dish outwards, the later engines had a longer output shaft and ran a straight sprocket on the bikes. On the Radical they reverse the dished sprocket on the later engines but if you have the shorter output shaft you can run flat sprockets (I ran an early ZZR1100 in mine for a while).
To run the reversed 17t type sprocket the lip has to be machined off to get the teeth in the right place (I used to use the reversed 17T sprocket on my turbo ZZRs.
You would need a sprocket for a 1990 ZZR1100 (has the dish) and get a 15T sprocket for a later one (flat), machine the teeth off the 17T one and bore out the centre of the 15T one to suit and TIG weld them together?
I bought an ex-hillclimb ZZR1100 engine years ago and it had a 14T sprocket done like this.
Obviously accuracy of machining and quality of welding critical to make it work properly.
The 1990 ZZR engine has a shorter output shaft hence the dish outwards, the later engines had a longer output shaft and ran a straight sprocket on the bikes. On the Radical they reverse the dished sprocket on the later engines but if you have the shorter output shaft you can run flat sprockets (I ran an early ZZR1100 in mine for a while).
To run the reversed 17t type sprocket the lip has to be machined off to get the teeth in the right place (I used to use the reversed 17T sprocket on my turbo ZZRs.
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