Weight Weenies
* FAQ    * Search    * Trending Topics
* Login   * Register
HOME Listings Blog NEW Galleries NEW FAQ Contact About Impressum
It is currently Mon Jun 26, 2017 1:40 am

All times are UTC+01:00





Post new topic  Reply to topic  [ 11 posts ] 
Author Message
PostPosted: Fri Apr 08, 2005 10:25 am 
Offline
Resident Pro

Joined: Wed Jan 26, 2005 9:13 pm
Posts: 1919
Location: Australia/Czech-Rep.
So would it? be wrong to have a different crank arm on the left to the right?


Top
   
 Post subject:
PostPosted: Fri Apr 08, 2005 10:30 am 
Offline
User avatar

Joined: Mon Oct 20, 2003 7:11 pm
Posts: 350
zakeen wrote:
So would it? be wrong to have a different crank arm on the left to the right?


To compensate for a length difference in your legs ? Not a bad idea IMO but I am not an expert in ergonomics to give you an answer.


Top
   
 Post subject:
Posted: Fri Apr 08, 2005 10:30 am 


Top
   
 
 Post subject:
PostPosted: Fri Apr 08, 2005 10:44 am 
Offline

Joined: Tue Nov 30, 2004 4:25 am
Posts: 1140
Location: Tas, Aus
Only problem I could see is your foot moving forward and back further on one side. Might need to twist your saddle slightly to accommodate. This might hurt your back. Ive got no real idea though but it sounds fairly logical.


Top
   
 Post subject:
PostPosted: Fri Apr 08, 2005 12:28 pm 
Offline

Joined: Sat Oct 25, 2003 7:12 pm
Posts: 168
This idea does not make sense, first off all the tuanbility is not completely right you would be stuck to increments off 2.5mm.

When both pedals are at 0 and 180 degrees the difference would not be as pronounce as at 90 and 270 degree. This would make for and unsmooth stroke. By doing this you are creating a compensation for leg lenght difference at the bottom bracket, whereas using shoe wedges would create a compensation at the axle on the cleat. Seeing that your foot stays in generally the same position and there is never a full rotation the adaption would mostly stay the same through the motion, unless you angle your foot a lot, some angulation is normal anyway.

A cleat wedge system is a far better/safer solution. But then again if you want to try 2 different cranks...... just let us know how that goes


Top
   
 Post subject:
PostPosted: Fri Apr 08, 2005 1:00 pm 
Offline

Joined: Thu Sep 02, 2004 10:19 am
Posts: 354
Location: Germany
jus wondering zakeen, why do you want to do that ?


Top
   
 Post subject:
PostPosted: Fri Apr 08, 2005 1:18 pm 
Offline
User avatar

Joined: Thu Nov 04, 2004 10:56 pm
Posts: 3722
Location: Wichita, KS
I've heard of doing this to compensate for leg lengths not being exactly the same. Another option would be to use spacers on the cleats on one foot. That is IF indeed your issue is that you have one leg longer than the other. If that isn't your issue I don't know why you would do this.


Top
   
 Post subject:
PostPosted: Fri Apr 08, 2005 6:08 pm 
Offline

Joined: Tue Jan 06, 2004 5:12 pm
Posts: 1326
Spacers in the cleat area would be an easier and more effective way as you need your shorter leg longer at the bottom of the stroke as opposed to all the way around as a short crank would do.


Top
   
 Post subject:
PostPosted: Fri Apr 08, 2005 6:18 pm 
Offline

Joined: Thu Sep 04, 2003 6:33 pm
Posts: 1332
were does it say in the origional post different lengths? maybe the poster wants to use shimano one side & campag the other :shock:


Top
   
 Post subject:
PostPosted: Fri Apr 08, 2005 6:39 pm 
Offline
Resident Pro

Joined: Wed Jan 26, 2005 9:13 pm
Posts: 1919
Location: Australia/Czech-Rep.
PNuT wrote:
were does it say in the origional post different lengths? maybe the poster wants to use shimano one side & campag the other :shock:


Exactly!!!!!!!!!!!!

jozuph wrote:
just wondering zakeen, why do you want to do that ?


Well Dr. Lothar Heinrich(t-mobile) and ww.srm-sports.de kindly gave me a pair of SRM cranks. It is the older versions, so it uses a DA bottom bracket. I also have an old pair of DA cranks that were hardly ever used, so I was thinking... could I use the left side of a DA and the right side of SRM?

its a 35 grams save for zero cost! but my concern is, on is much stiffer then the other, would that matter or not?


Top
   
 Post subject: Re: SRM Cranks
PostPosted: Fri Apr 08, 2005 8:38 pm 
Offline

Joined: Sat Dec 13, 2003 2:25 am
Posts: 4872
Location: Canada
I have the same deal with SRM cranks on my bike. Rather than pull both sides of the cranks when I swap the SRM around between bikes, I leave the non-drive side crankarm on and just change the Powermeter. The Record and SRM "Q" factor is very close, so I have never noticed any difference. Additionally, the Record crankarm is lighter than the SRM, I am sure it is the same for the Dura-Ace.


Top
   
 Post subject: Re: SRM Cranks
Posted: Fri Apr 08, 2005 8:38 pm 


Top
   
 
 Post subject:
PostPosted: Fri Apr 08, 2005 8:40 pm 
Offline

Joined: Fri Oct 08, 2004 4:50 am
Posts: 119
Location: usa
I have seen this done with a campag arm on the left coupled with an srm on the drive side, and it worked perfectly for that person, so go for it. If i could afford an SRM thats what I would do


Top
   
Display posts from previous:  Sort by  
Post new topic  Reply to topic  [ 11 posts ] 

   Similar Topics   Author   Replies   Views   Last post 
There are no new unread posts for this topic. Attachment(s) spider for k-force light crank arms other than power2max?

in Road

lovemyway

1

220

Fri Feb 10, 2017 7:56 pm

lovemyway View the latest post

There are no new unread posts for this topic. Attachment(s) Cannondale SiSl2 Crank Arms - weight differences

[ Go to page: 1 2 ]

in Road

nonamed

17

2320

Mon Jan 09, 2017 10:05 am

nonamed View the latest post

There are no new unread posts for this topic. Weight of SRAM CX1/S900 GXP arms?

in Road

hmai18

0

154

Wed Dec 28, 2016 3:58 am

hmai18 View the latest post

There are no new unread posts for this topic. Crank Bearing Puller for SRM Campagnolo Crank

in Road

mrgray

14

641

Tue Apr 04, 2017 9:37 am

mrgray View the latest post

There are no new unread posts for this topic. Crank arm size

in Road

WhyZ

5

564

Sat Feb 18, 2017 10:20 am

Kayrehn View the latest post


All times are UTC+01:00


Who is online

Users browsing this forum: Baidu [Spider], dereksmalls, mrpillow, wheelbuilder and 34 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
Powered by phpBB® Forum Software © phpBB Limited