Got my new C2W bike back in June and have managed to cover about 135 miles on it so far.
It's the first time I've had a 1*12 bike, my old one (2009 GT Avalanche) is a 3*9. For the last couple of weeks I've felt like the new bike is just a little too low geared, I don't use the very bottom gear even on the steep uphill bits, I feel like I could do with another gear on the flat.
On the Giant website it says that the crankset is "ProWheel MPX, 30t or 32t". I haven't counted the teeth to see which one I've got, but to get what I want I'm not sure if I need more or less teeth on the front? I'm assuming that changing the crankset is the best way to alter the gearing - or is there a better way?
Any recommendations wise ones?
More teeth on the front makes all the gears harder.
Cheap to do aswell. Buy a new chainring with the number of teeth you want. Slap it on.
Have a look at this
Alter the values at the top for wheel size, tyre size and chainring sizes (It is based on double chainset) and rear cassette...then look at what it produces. A high number is a harder gear, low number is easier (climbing gear)
Should give you an idea of what chainring will work best (and whether with that size in mind, you are able to simply get a new chainring based on bolt centres of the crank arms)
https://www.bikecalc.com/gear_inches
Just check there is clearance between the current chainring ad the chain stay.
If its already tight with 30 or 32 then a bigger ring might not fit.
But if there is room then its an easy job. You just need to know the BCD (the distance between the chain ring bolts) and you can buy a bigger compatible chain ring
Thanks all. It looks like the chainring and cranks are one piece - so I guess it's a new crankset required?
I don't think it will be one piece. They are just direct mount rather than using chainring bolts. Look up how to remove direct mount chainrings. I think the tool is an old style bottom bracket tool
It looks like the chainring and cranks are one piece
They won't be.
Edit: As above
Looks like the chainrings are a sram style fitment helod with 3x torx bolts
https://www.mtbr.com/threads/prowheel-vs-sram-direct-mount-chainring.1158575/
Now you need to decide if the bike is boost spacing or not, that will tell you if you need a 0mm / 3mm / 6mm offset chainring.
Tell us the bike and it's easy to work out.
Then take your pic of bigger chainrings:
https://www.superstarcomponents.com/en/shop/?q=sram+direct+chainring
https://www.ebay.co.uk/sch/i.html?_from=R40&_nkw=sram+direct+mount+chainring&_sacat=0&_sop=15
Ah, that looks so much cheaper and less faffy than I was expecting!
And you can get anodised shell suit colours too! Happy days.
@wzzzz it's a Giant Talon 0 29er - does that help?
This is what my chainring looks like - am I right in thinking that it's a 6mm offset?
Thanks,
Chris.
have managed to cover about 135 miles on it so far.
I'm surprised nobody's suggested buying a new bike yet.
thols2
Free Member
have managed to cover about 135 miles on it so far.I’m surprised nobody’s suggested buying a new bike yet.
Posted 5 minutes ago
You're right, it's dirty and everything.
If it hadn't already taken ages to persuade someone to take my c2w voucher out of my grubby hands and swap it for a new bike I might be tempted.....