HOT: Active* forum members generally gain 5% discount at starbike.com store!
Weight Weenies
* FAQ    * Search    * Trending Topics
* Login   * Register
HOME Listings Blog NEW Articles FAQ Contact About




Post new topic Reply to topic  [ 28 posts ] 
Go to page 1, 2  Next
Author Message
PostPosted: Mon Feb 11, 2013 2:55 am 
Offline

Joined: Mon Feb 04, 2013 10:04 pm
Posts: 54
Hi.
I'm building a dedicated hill climb bike for Mt. Washington where the time penalty is about 30 seconds per pound.

I'm going to run either a single 20 or 22T chain ring which requires 64mm BCD. Obviously shift quality and bearing durability are not issues. loose or broken cranks would be.

Frame will be a PF-30

The Extralite e-bones W (479 grams advertised) look pretty good to me.

Any experience as far as quality?

Any better alternatives?


Top
 Profile  
 
Posted: Mon Feb 11, 2013 2:55 am 


Top
  
 
PostPosted: Mon Feb 11, 2013 8:11 am 
Offline
User avatar

Joined: Sun Jun 12, 2005 10:56 am
Posts: 2650
Location: New Zealand
They are not extralite's finest work. The company builds good gear but the e-bones are quite an old design. See madcow's review on cranks...it is VERY comprehensive.

_________________
Used to race....got too wrinkly and old ;) Updated: Racing again! Thought this was unlikely! Eventually, I may even have a decent race!
Edit: HAD a decent race! 16/08/2014 :)


Top
 Profile  
 
PostPosted: Mon Feb 11, 2013 8:55 am 
Offline

Joined: Sat Jun 06, 2009 7:28 am
Posts: 479
no


Top
 Profile  
 
PostPosted: Mon Feb 11, 2013 9:43 am 
Offline

Joined: Mon Feb 04, 2013 10:04 pm
Posts: 54
theremery wrote:
They are not extralite's finest work. The company builds good gear but the e-bones are quite an old design. See madcow's review on cranks...it is VERY comprehensive.


Tried the search but can't seem to find the review. Could you link me please


Top
 Profile  
 
PostPosted: Mon Feb 11, 2013 6:27 pm 
Offline

Joined: Wed Feb 02, 2011 3:48 am
Posts: 1064
The MTB E Bones have a Qfactor more than 20mm wider than the road version. Is that an issue for you? Other than that, nothing to worry about.

Have you thought about Lightning or Specialized road cranks and using a Lightning 104/64 spider?


Top
 Profile  
 
PostPosted: Mon Feb 11, 2013 6:57 pm 
Offline
User avatar

Joined: Sat Aug 05, 2006 2:29 am
Posts: 1376
Location: Mountain View, California
http://fairwheelbikes.com/forum/viewtop ... =77&t=7916

_________________
http://www.hackracer.com/


Top
 Profile  
 
PostPosted: Mon Feb 11, 2013 8:11 pm 
Offline

Joined: Mon Feb 04, 2013 10:04 pm
Posts: 54
jooo wrote:
The MTB E Bones have a Qfactor more than 20mm wider than the road version. Is that an issue for you? Other than that, nothing to worry about.

Have you thought about Lightning or Specialized road cranks and using a Lightning 104/64 spider?


I hadn't- traditionally I just use Shimano stuff for my road and mountain bikes- but I'm inspired to build a ~10 pound bike for this ride.
Q factor isn't an issue- I use MTB triples on everything pretty much.

I'll look into those- thanks for the reference.


Top
 Profile  
 
PostPosted: Mon Feb 11, 2013 8:20 pm 
Offline
User avatar

Joined: Wed Oct 31, 2007 10:32 pm
Posts: 7412
Location: Los Angeles / Glendale, California
Necessary research:
viewtopic.php?f=3&t=76357

_________________
Exp001 || TeamLACBC


Top
 Profile  
 
PostPosted: Mon Feb 11, 2013 8:33 pm 
Offline

Joined: Mon Feb 04, 2013 10:04 pm
Posts: 54
prendrefeu wrote:
Necessary research:
viewtopic.php?f=3&t=76357" onclick="window.open(this.href);return false;


Thanks!


Top
 Profile  
 
PostPosted: Tue Feb 12, 2013 1:36 pm 
Offline

Joined: Thu Feb 03, 2011 2:28 pm
Posts: 381
I have the road version and can't fault them. Madcow's test doesn't seem too critical of them to me - they are among the lightest in the test, and while the stiffness to weight ratio doesn't seem very impressive I don't notice any flex in mine.


Top
 Profile  
 
PostPosted: Tue Feb 12, 2013 5:52 pm 
Offline
in the industry
User avatar

Joined: Sun Jul 29, 2012 2:59 pm
Posts: 634
Location: Ruidoso, NM
bobqzzi wrote:
I'm building a dedicated hill climb bike for Mt. Washington where the time penalty is about 30 seconds per pound.


Thought about fixed gear?

_________________
formerly rruff...


Top
 Profile  
 
PostPosted: Tue Feb 12, 2013 7:12 pm 
Offline
User avatar

Joined: Fri May 12, 2006 2:11 pm
Posts: 1225
Location: Bergen, Norway
Hollowgram SiSL with a one-piece chainring?

_________________
/jonas l
http://cerrol.wordpress.com (my cyclingblog)


Top
 Profile  
 
PostPosted: Tue Feb 12, 2013 10:22 pm 
Offline

Joined: Mon Feb 04, 2013 10:04 pm
Posts: 54
WMW wrote:
bobqzzi wrote:
I'm building a dedicated hill climb bike for Mt. Washington where the time penalty is about 30 seconds per pound.


Thought about fixed gear?


Yes, but rejected it immediately- the grade varies enough (8% to 22%) to require different gears. Any time gained from weight reduction ( 1 rear cog and no brakes, rear derailer) you (or at least I) more than give back with less than optimal gears at certain spots.

I'm going to run the 4 top cogs from a 9 speed XTR cassette (34/30/26/23) which shoudl give me the proper range of speeds with a 20 or 22T front.

Good thought though


Top
 Profile  
 
PostPosted: Tue Feb 12, 2013 10:37 pm 
Offline

Joined: Mon Feb 04, 2013 10:04 pm
Posts: 54
cerro wrote:
Hollowgram SiSL with a one-piece chainring?


I assume that I would have to have such a chainring custom made or is there one currently produced?


Top
 Profile  
 
PostPosted: Tue Feb 12, 2013 10:59 pm 
Offline
User avatar

Joined: Wed Oct 31, 2007 10:32 pm
Posts: 7412
Location: Los Angeles / Glendale, California
They're available via HomeBrewed Components (or Fibrelyte, but contact them)

Homebrewed Components.

_________________
Exp001 || TeamLACBC


Top
 Profile  
 
Posted: Tue Feb 12, 2013 10:59 pm 


Top
  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 28 posts ] 
Go to page 1, 2  Next


Who is online

Users browsing this forum: 9734344, Google [Bot], kaaos, TonyMM and 40 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:  

   Similar Topics   Author   Replies   Views   Last post 
There are no new unread posts for this topic. replacement crank decals? Or sprucing up a plain crank

in Road

davidalone

2

1018

Tue Mar 11, 2014 8:52 am

davidalone View the latest post

There are no new unread posts for this topic. Differences Rotor crank and Rotor SRM crank - swapping arms

in Road

Timmetje

0

184

Wed Nov 12, 2014 2:09 pm

Timmetje View the latest post

There are no new unread posts for this topic. Extralite OctaRamp MC 52/36

in Road

dereksmalls

0

305

Tue May 27, 2014 10:35 am

dereksmalls View the latest post

There are no new unread posts for this topic. Attachment(s) Ultrasonic Parts Washer?

in Road

freemyheel

14

937

Sun Nov 09, 2014 11:28 pm

WheresWaldo View the latest post

There are no new unread posts for this topic. XRD Racing parts or Ravx??

in Road

anaerobic

1

252

Sun Feb 16, 2014 7:54 am

michel2 View the latest post


It is currently Mon Dec 22, 2014 11:09 am

All times are UTC + 1 hour




Advertising   –  FAQ   –  Contact   –  Convert   –  About

© Weight Weenies 2000-2013
hosted by starbike.com


How to get rid of these ads? Just register!


Powered by phpBB