cb350, 520 conversion, primary sprocket without bolt holes?

[boomshakalaka]

Installing a 520 conversion from THR, but the primary sprocket doesn't have the two holes, but it comes with this e clip, similar to the picture below:




So I'm guessing that I just slip the sprocket on, then slip the E clip in the slot where the bracket that the stock sprocket bolts to slips in? The only thing is, if I do that the sprocket is only secured from moving away from the engine, but is free to wander towards the cases. Is the chain enough to keep it from doing this? If it is, it seems it would causes excessive wear on the chain/sprocket(s). Am I missing something?

For reference, the stock sprocket/bracket looks like this one:



... Also, the rear sprocket did not come with any spacer, so there is a gap between it and the retaining clip. Maybe there is some easy remedy to this? Maybe I'm missing something? But for $140, I'd expect a "conversion" 520 chain kit to be plug and play, or come with any additional needed spacers...

 

[DrJ]

... Also, the rear sprocket did not come with any spacer, so there is a gap between it and the retaining clip. Maybe there is some easy remedy to this? Maybe I'm missing something? But for $140, I'd expect a "conversion" 520 chain kit to be plug and play, or come with any additional needed spacers...

There's a spacer ring between the clip and sprocket in the stock set up.

 

[teazer]

That's how they come from sprocket Specialists and the front is free to float slightly and self align so it is less likely to wear than a fixed sprocket - In theory at least. The rear I would expect to need a thin spacer of some sort. If the rear sprocket moves around it tend to wear out the spigot it sits on and will tend to break studs as we found out on a loose fitting CB175 race bike rear sprocket

 

[boomshakalaka]

Awesome, thanks guys. I dug through my parts bins and found a spare cb350 rear sprocket spacer, with the two of them stacked it was a perfect fit. Rereading my post, it kinda sounds like I'm dissing THR, but I definitely did not mean to. I guess a lot of the guys buying from them already know how to apply the stuff, but for someone like me who hasn't worked on bikes for that long, non-stock parts without instructions can be a bit of a challenge.

 

[DrJ]

I just remembered I used to have an 18T 520 front sprocket from THR. It was a stock Honda part with the 2 bolt holes that was milled down to fit a 520 chain.

 

[boomshakalaka]

I just remembered I used to have an 18T 520 front sprocket from THR. It was a stock Honda part with the 2 bolt holes that was milled down to fit a 520 chain.

ya, I think this is how he used to do his conversions? But now it seems he just gets the sprockets made.