TA Chainrings - What’s this spacer for?

[Spiderweb]

I fitted 2 new TA chainrings today, with the 48t chainring there was a small bag with 2 spacers and a hex screw, you can see I fitted the longer one on the large chainring behind the crank arm, could you tell me what the smaller spacer is for?

 

[Darius_Jedburgh]

Isn't that to stop the chain dropping into the gap? Narrow one for different crank arms?

 

[Spiderweb]

Isn't that to stop the chain dropping into the gap? Narrow one for different crank arms?

That’s what I thought but I should have mentioned that the smaller Spacer isn’t threaded.

 

[Darius_Jedburgh]

Maybe it's to extend the one you fitted. Is the bolt long enough?

 

[Spiderweb]

Maybe it's to extend the one you fitted. Is the bolt long enough?

You could be right, the bolt is long enough.

 

[Ajax Bay]

It would be a neat design tweak if they offer two more locations on the ring where the little bolt could be fitted (screwed in) so that after (say) 10,000km, the ring could be rotated 72/144 degrees and even out the wear a bit.

 

[ColinJ]

It would be a neat design tweak if they offer two more locations on the ring where the little bolt could be fitted (screwed in) so that after (say) 10,000km, the ring could be rotated 72/144 degrees and even out the wear a bit.

I was thinking that a couple of days ago when swapping rings on my singlespeed bike, and noticing uneven wear on the ring that I took off!

 

[C R]

It would be a neat design tweak if they offer two more locations on the ring where the little bolt could be fitted (screwed in) so that after (say) 10,000km, the ring could be rotated 72/144 degrees and even out the wear a bit.

It is probably an easy DIY fettle to drill and tap a hole in the right position, provided the mounting points allow for rotation, I seem to remember seeing some rings that looked like they could only be mounted in one position due to asymmetric spider arm location.