Crank Length

Workshop tales, trials and disasters.
Maintenance tips, techniques and myths.
Technical discussion, description and outright lies

Crank Length

Postby CoffeeNut » Mon Jun 16, 2008 9:31 pm

Just noticed I have 170mm cranks on my Shimano 105 53/39

Is 170mm typical? Thought 175mm was more common ??
CoffeeNut
 
Posts: 233
Joined: Thu Aug 02, 2007 11:43 pm
Location: Toowoomba

by BNA » Mon Jun 16, 2008 9:33 pm

BNA
 

Postby nzdans » Mon Jun 16, 2008 9:33 pm

170mm is the common size for road bikes as it promotes spinning more. The common size for MTBs is 175mm...
User avatar
nzdans
 
Posts: 119
Joined: Thu Apr 24, 2008 7:53 pm
Location: Belconnen, ACT

Postby Kalgrm » Mon Jun 16, 2008 9:34 pm

If you've only just noticed, don't worry about it. ;)

Cheers,
Graeme
Think outside the double triangle.
---------------------------------------
My web site: www.scenebyhird.com
---------------------------------------
The Bicycle Transportation Alliance
User avatar
Kalgrm
Super Mod
Super Mod
 
Posts: 9236
Joined: Fri May 25, 2007 5:21 pm
Location: Spearwood, 9km SE of Fremantle, WA

Postby nzdans » Mon Jun 16, 2008 9:45 pm

Sorry, am multi tasking (on marathon call with Mum), what size frame do you ride, how tall are you?
User avatar
nzdans
 
Posts: 119
Joined: Thu Apr 24, 2008 7:53 pm
Location: Belconnen, ACT

Postby CoffeeNut » Mon Jun 16, 2008 9:51 pm

Doing a lot of hills up here in Toowoomba. Contemplating compacts or a triple - so was measuring up some options.
I'm 173cm short, and frame is 52cm Trek - seems to fit well.
CoffeeNut
 
Posts: 233
Joined: Thu Aug 02, 2007 11:43 pm
Location: Toowoomba

Postby 531db » Mon Jun 16, 2008 10:27 pm

CoffeeNut wrote:Doing a lot of hills up here in Toowoomba. Contemplating compacts or a triple - so was measuring up some options.
I'm 173cm short, and frame is 52cm Trek - seems to fit well.


If your leg length is in proportion to your height of 173cm, 170mm is plenty long enough.

531db (184cm and 165/170mm 'cranker').
531db
 
Posts: 969
Joined: Mon Nov 20, 2006 6:25 pm
Location: Riding a real steel bike - somewhere!

Postby Parrott » Mon Jun 16, 2008 11:29 pm

Have a go at this site.
User avatar
Parrott
 
Posts: 2960
Joined: Wed Apr 18, 2007 8:45 pm

Postby CoffeeNut » Tue Jun 17, 2008 8:25 am

calculator says 163mm would be ideal.
CoffeeNut
 
Posts: 233
Joined: Thu Aug 02, 2007 11:43 pm
Location: Toowoomba


Return to The Shed

Who is online

Users browsing this forum: Duck!



Popular Bike Shops
Torpedo 7 Torpedo7 AU
Ground Effect Ground Effect NZ
Chain Reaction Cycles CRC UK
Wiggle Wiggle UK
Ebay Ebay AU



InTouch with BNA
“Bicycles BNA Twitter
“Bicycles BNA Facebook
“Google+ BNA Google+
“Bicycles BNA Newsletter