Front Sprocket

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SDN
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Front Sprocket

Post by SDN » Mon Mar 02, 2015 11:34 am

Can anyone confirm please which way the front sprocket goes, mine has a boss machined on one side does this face the engine or outwards?

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Excalibre
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Re: Front Sprocket

Post by Excalibre » Mon Mar 02, 2015 11:51 am

I'm away from my bike at the moment but the usual rule of thumb is that the side with the size (no. of teeth) stamped on it faces outwards.
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Re: Front Sprocket

Post by andyaber » Mon Mar 02, 2015 1:24 pm

Hi Simon

Looking at your bike, you have a yzf rear end fitted.

The std front sprocket is flat, so i would say you have an offset front sprocket fitted to align it with the yzf rear sprocket.

If this is the case, the boss faces the gear box.


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Re: Front Sprocket

Post by cobbadiggabuddyblooo » Mon Mar 02, 2015 2:22 pm

Std trx sprocket has from memory a 3mm raised offset on both sides . A quick check on a sprocket site will give you the exact offset. Scrolled through for a few hrs when tracking down a 520 set up.
The 520 r6 front sprocket I'm using has the same trx offset on the side facing the engine and flat on the other side facing outwards.
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Re: Front Sprocket

Post by NWS870R » Tue Mar 03, 2015 1:01 am

It's usually flat side facing outwards on most bikes - why would you need a raised face/boss if it wasn't to correct offset?
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Re: Front Sprocket

Post by SDN » Tue Mar 03, 2015 2:23 pm

Cheers guys I was having a problem with the rear wheel binding, I loosened off the rear wheel spindle and it improved then started worrying that I had put the sprocket onn wrong - I was pretty tired and it had been a long day. I looked into it again last night and it turned out the rear caliper was seized on the disc so problem solved.

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