MTB Crankset Help!

russtini

Hi Boardies:

My son just smashed off a pedal and destroyed the thread on the crankarm 😣 - this is he's bike:

https://www.halfords.ie/cycling/bikes/all-bikes/carrera-titan-mens-full-suspension-mountain-bike---s%2C-m%2C-l-frames%2C-green%2Fgrey-850633.html

My question is - will any 36/22T 2*chainring with square taper fit that bike as a replacement? Any Gotcha's?

e.g. I have got the old crank off and found a relatively reasonable Shimano Altus on Ebay:

https://www.ebay.co.uk/itm/284795171519?epid=7038046044&hash=item424f1d72bf:g:NF8AAOSwdT5ibzyq

Thanks for the help!😀

mad turnip

Hi,

While this does look to be correct I think it may have some issues with shifting. This crankset on ebay was made for a boost hub as indicated in the title and in the description:

• With a 51.8 mm (boost) chainline for use in conjunction with 148 mm O.L.D.

The Carrera titan has the rear hub size listed as:

Alloy, 10x135mm quick release, 8/9/10 speed freehub body

While it will fit in the bottom bracket I think, there may be shifting problems. I'll see if I can find a reasonable replacement.

russtini

ah so thats what boost means!

Found another on amazon thats non boost:

https://www.amazon.co.uk/gp/product/B07DJ2833Z/ref%3Dox_sc_act_title_1?smid=A3P5ROKL5A1OLE&psc=1

Would this do the job?

Appreciate the help😁

mad turnip

Hmm, no I don't think so as your bottom bracket itself contains the spindle. In this case a square tapered one like so:

https://www.ebay.co.uk/itm/184948141980?hash=item2b0fc4af9c:g:O4MAAOSwaKZg8rPW

So if you want to move off a square tapered bottom bracket a different type like BSA may be able to be fitted but at this point I'm unsure as to what to advise you to do.

My searches of the sites I know didn't turn up any results that were suitable at a reasonable price I'd pay. Tapered, 2x and correct chain length.

Getting a part that fits and works as expected does seem to be troublesome even while looking at chinese websites. Your best bet is probably to go to a bikeshop and they can better advise you what will fit and halfords may even have replacements for things like this.

This will avoid you buying an item that does not fit correct. Not to mention the crank puller tool itself to remove them.

russtini

OK I was worried that this may happen - theres a very good reason why local bikeshop is busy