Noisy Front Sprocket

[V650]

What do you guys think

The bolt is tightening up against the shaft but not locking the sprocket in place 

I checked the old sprocket thickness and it is 17.2 mm and the new JT sprocket is 17.0mm 

Had problems on my old versys where the nut was not tight and did some damage to the output shaft

https://youtube.com/shorts/8V_lPwvI--8

 

Edited Friday at 15:49 by V650

[Simon Davey]

I'd be just popping a spacer behind the nut. 

 

[V650]

Yeah had a rummage through the odds n ends but didn't have a washer big enough to fit over the output shaft  

 

[bud]

That looks more than 0.2 mm of play. But I definitely wouldn't run it like that.

Could you not put a washer behind the head of the bolt? 

[V650]

9 hours ago, bud said:

Could you not put a washer behind the head of the bolt? 

The Big washer on the bolt hits the end of the shaft before hitting the sprocket leaving it free to slide a little

I think I would need a spacer / washer the slides over the shaft nearly the size of part no 21 to compress against the face of the sprocket 

which I don't have at the mo or take an angle grinder to the end of the shaft and try take .2 off it

 

Edited Saturday at 05:38 by V650

[V650]

This is a photo of my old Kawasaki Versys which the counter shaft locknut was loose ( before I got it )

I ended up replacing the gearbox on that with a gearbox from a low miles write off

You can see how the splines wore down

 

 

[husoi]

Sounds like you're missing the back shims (check the spelling please)

Having said that, the movement is lateral and wouldn't affect the wear of the sprocket.

It will be worn by the chain before any other damage is done 

[V650]

8 minutes ago, husoi said:

Sounds like you're missing the back shims (check the spelling please)

Having said that, the movement is lateral and wouldn't affect the wear of the sprocket.

It will be worn by the chain before any other damage is done 

There is no movement at all with the stock Sprocket

I reinstalled it to test

the JT sprocket is not as thick as the OEM one by 0.2mm

I am having a look online now to see if I can get an OEM sprocket but they are pricey but I think I will swap it out just for peace of mind

[husoi]

Time to take a picture of both OEM and JT side-by-side and return it 

[Punts]

My Honda Blackbird front sprockets have free play, my ZZR1400 doesn't. The Blackbird sprocket is held on by a flanged bolt and the ZZR sprocket is held on by a nut and a locking tab washer which fits over the splines on the shaft. If you clean up the splines on the shaft and the old sprocket, you might find that there is a bit of free play. You should apply some Molygrease to the splines when you fit the new sprocket, this will stop "brinelling", the red dust you find when you take the sprocket off.

[V650]

2 hours ago, husoi said:

Time to take a picture of both OEM and JT side-by-side and return it 

It was only about a tenner for the JT sprocket & would likely cost me a couple of euro to return it so I will bung it in the shed with all the other bike bits just in case

I found another OEM sprocket and have ordered same I will swap it out when it arrives 

Cheers 

J

[V650]

13 minutes ago, Punts said:

My Honda Blackbird front sprockets have free play, my ZZR1400 doesn't. The Blackbird sprocket is held on by a flanged bolt and the ZZR sprocket is held on by a nut and a locking tab washer which fits over the splines on the shaft. If you clean up the splines on the shaft and the old sprocket, you might find that there is a bit of free play. You should apply some Molygrease to the splines when you fit the new sprocket, this will stop "brinelling", the red dust you find when you take the sprocket off.

Thanks for the tip RE the red dust I thought it was corrosion

[bonio]

On 17/05/2025 at 10:06, V650 said:

so I will bung it in the shed with all the other bike bits just in case

My garage is like your shed.

[bud]

3 hours ago, bonio said:

My garage is like your shed.

Err, and mine. But you know if you throw it out. You will need it.

[V650]

6 hours ago, bud said:

Err, and mine. But you know if you throw it out. You will need it.

Yeah I am terrible for keeping stuff that will never get used

But throw it out and I will need it next week

[V650]

10 hours ago, bonio said:

My garage is like your shed.

I am probably lucky I only have a shed

Imagine the amount of stuff I could hang on to if I had an actual garage

I would never come out of it

[JRH]

4 hours ago, V650 said:

Yeah I am terrible for keeping stuff that will never get used

But throw it out and I will need it next week

I still have stuff for a bike I haven't had for about 10 years. 

[Grumpy Old Git]

I have an Amal carb dating back to the 60s as well as a 6v coil and condenser (as well as sundry other 'bits' that I will never need.

 

 

[Mississippi Bullfrog]

Lurking in my garage was an old parking lamp you used to attach to the driver's window and run a wire to the battery. 

 

So then I needed a car to go with it. 

 

Bought a literal barn find 1972 Viva. Bought a welder. Bought jacks, axle stands, full set of imperial sockets and spanners. Bought a sprayer and compressor. Bought angle grinder and powerfile.  Bought timing kit. 

 

Which led to hunting replacement panels, seats,  carpet, various engine and suspension parts. Then a full set of 4 brake drums which hadn't been manufactured since the last casting mould shattered.  New brake lines and cylinders. Master cylinder rebuild kit. New radiator, carburettor,  exhaust. A set of Rostyle wheels which I hid under the sideboard (not very successfully). 

 

So be wary of old parts lying around your shed. They can lead to great expense. 

[bud]

2 hours ago, Mississippi Bullfrog said:

Lurking in my garage was an old parking lamp you used to attach to the driver's window and run a wire to the battery. 

 

So then I needed a car to go with it. 

 

Bought a literal barn find 1972 Viva. Bought a welder. Bought jacks, axle stands, full set of imperial sockets and spanners. Bought a sprayer and compressor. Bought angle grinder and powerfile.  Bought timing kit. 

 

Which led to hunting replacement panels, seats,  carpet, various engine and suspension parts. Then a full set of 4 brake drums which hadn't been manufactured since the last casting mould shattered.  New brake lines and cylinders. Master cylinder rebuild kit. New radiator, carburettor,  exhaust. A set of Rostyle wheels which I hid under the sideboard (not very successfully). 

 

So be wary of old parts lying around your shed. They can lead to great expense. 

That escalated quite quickly.

[V650]

4 hours ago, Mississippi Bullfrog said:

 A set of Rostyle wheels which I hid under the sideboard (not very successfully).

Like she is not going to notice them  

[V650]

4 hours ago, Mississippi Bullfrog said:

Lurking in my garage was an old parking lamp you used to attach to the driver's window and run a wire to the battery. 

 

For the youngsters who don't know what a parking lamp is / sorry Was

 

Edited 22 hours ago by V650