What crank to Buy?

[Scott2luvit]

Hi guys, I bought a Axis ar20 carbon frame,with 8 speed older parts on, the guy who sold it bought the bike for the parts, so I want to upgrade the 39/52 Truvativ Crank to a compact 172,5mm 34/50t beacause I am to fat and struggle on the climbs. I am unsure of what crankset to buy, the one I am looking at says 110mm BB recomended, So the question is, Is most of the stuff std side, in other words, can I buy the crank, or will I have to search for a 110mm bb and also I dont know if it will fit the Axis

 

help die dom vettietjie asb man

[Scott2luvit]

anyone can answer.......

[Paul Ruinaard]

Have a look at the Axis site for the type of thread that the bottom bracket of the frame takes.

 

http://www.axis-bikes.com/bikes/mountain-series/a20

 

from the site:

CRANKSET

SHIMANO - FCM552 - 42/32/24T

BB

SHIMANO

 

Once you have that you can decide which BB to use. 110 mm BCD sounds pretty standard. You can use any external cup Shimano crank.

 

This frame - on their website it is an MTB which uses triple cranks. Why are you looking at doubles. If you are a fat boy use a triple if its an MTB. If its road go a compact crank with an external BB cup Shimano crank - lots on the classifieds.

[Scott2luvit]

Have a look at the Axis site for the type of thread that the bottom bracket of the frame takes.

 

http://www.axis-bike...tain-series/a20

 

from the site:

 

 

CRANKSET

SHIMANO - FCM552 - 42/32/24T

 

BB

SHIMANO

 

Once you have that you can decide which BB to use. 110 mm BCD sounds pretty standard. You can use any external cup Shimano crank.

 

This frame - on their website it is an MTB which uses triple cranks. Why are you looking at doubles. If you are a fat boy use a triple if its an MTB. If its road go a compact crank with an external BB cup Shimano crank - lots on the classifieds.

thanks, but the AR20 was the road bike, which is not on their site anymore

[Scott2luvit]

Have a look at the Axis site for the type of thread that the bottom bracket of the frame takes.

 

http://www.axis-bike...tain-series/a20

 

from the site:

 

 

CRANKSET

SHIMANO - FCM552 - 42/32/24T

 

BB

SHIMANO

 

Once you have that you can decide which BB to use. 110 mm BCD sounds pretty standard. You can use any external cup Shimano crank.

 

This frame - on their website it is an MTB which uses triple cranks. Why are you looking at doubles. If you are a fat boy use a triple if its an MTB. If its road go a compact crank with an external BB cup Shimano crank - lots on the classifieds.

do you recon this will work? http://www.ebay.com/itm/310882628259

[Paul Ruinaard]

until you know what type of thread your bottom bracket is you are just guessing. It could work but there are thousands of better local options.

Your thread will either be English or Italian - likely English if its an old frame. Then you buy based on that. There are lots of old cranks on the hub.

[Scott2luvit]

until you know what type of thread your bottom bracket is you are just guessing. It could work but there are thousands of better local options.

Your thread will either be English or Italian - likely English if its an old frame. Then you buy based on that. There are lots of old cranks on the hub.

thanks, the frame is actually new, it had 105 groupo on which they removed so I just bought the frame and put my old 8 speed parts on it from a shwinn fastback I had, unfortunately I suck at climbing, so changing the crank seems to be the easiest option rather than changing the whole groupo or rule#5

 

http://www.bicycling.co.za/bike-buyers-guide/ar20c/ link to the bike

Edited February 28, 2014 by Mr.E

[Paul Ruinaard]

Hmm - 8 speed is really old and that frame uses external Shimano BB cups so its unlikely you will find an 8 speed crank that will fit this BB. your 8 speed is from a generation prior to this. youy can maybe get a 9 speed crank with external cups that will work - a normal 105 crank may work. i know 9 speed and 10 speed chainrings are compatible, but 8 was a lot wide so to get 8 speed to work with 9, i am not sure.

 

Other people here who know more about it will know.

[Scott2luvit]

Yeah dont know, currently got the truvativ crank on there that was on the Schwinn, 10 speed105 fd, tiagra 8 spd rd, , sram 8 speed casette, 10 speed chain, and everything works 100%, allthough the bike is heavy and I am crap, drag myself uphill to fly down the other side, for now I'll have to be happy with sub4 at the Argus