chainring bolts

seanorawe

I have sram rival compact chainring and getting a strange slight click sound when pedalling. Before seeing to.the bottom bracket i saw a video on what to tighten. What's with the chain ring bolts? My 5mm hex goes right through and out the other side of.both rings. When i put the tool in slightly it allows me to turn the bolts but one of them just keeps turning and turning. The other bolts make a tightening like sound but also keep turning and one bolt in particular takes a 6mm hex and the others 5. Any idea what's going on the bike is only 6 months old

grenw

From memory on my MTB X0 chainring you needed a hex key on each side of the chainring one to tighten and one to hold. Can't remember the sizes (5 and 6mm?) but different from each side and a smaller key will go right through.

wotnoshoeseh

Yes - or some of them actually require a chain ring bolt spanner....

http://www.wiggle.co.uk/shimano-chainring-peg-spanner/?lang=en&curr=GBP&dest=1&sku=5360326023&ci_src=18615224&ci_sku=5360326023uk&utm_source=google&utm_term&utm_campaign=UK_PLA_Accessories&utm_medium=base&utm_content=mkwid%7CseEyHaoYR_dc%7Cpcrid%7C67090793102%7Cpkw%7C%7Cpmt%7C%7Cprd%7C5360326023uk

Usually used on the inner part of the crankset, with your Allen key used on the outer..

seanorawe

I'll add that spanner to my to buy list

seanorawe

So no way of tightening with the cranks on?

StillGoing

seanorawe wrote:

So no way of tightening with the cranks on?

Yes, you just put a hex key in from both sides and tighten. If one of the bolts is behind the crank arm, you need an adapter to fit behind the crank arm.

svetty

Nothing that's been posted leads me to think that the chainring bolts aren't fine.

Pedal cleat retention mechanism would be my guess as source of clicks.....

ryanshattered

Grease and refit the seatpost too - I've had creaks develop a number of times now where I suspected BB and it turned out to be the seatpost.

Baron Ban Ana

Could be a stiff chain link? Depends if the click is every pedal revolution or every other....

seanorawe

Baron Ban Ana wrote:

Could be a stiff chain link? Depends if the click is every pedal revolution or every other....

Its not all the time, it just comes and goes

I have tightened down all bottle cage screws, tightened the screw under my saddle, put a drop of oil in the pedal springs. Ill try and see if I can tighten the nits on the chainring today. Im convinced its coming from the non drive pedal or crank so Ill see about making sure its on tight too.

If I take the pedals off, what am I looking to clean or grease?

seanorawe

Actually

I have looked at a few videos. I dont have a vice either so servicing these cheap pedals seems to be a big ask until I get all the right tools. I paid £20 for the pedals and they are in CRC for £17.50 ill just buy a new pair. Once changed ill tick that one off the list.