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




Post new topic Reply to topic  [ 3 posts ] 
Author Message
PostPosted: Sun Nov 18, 2012 12:34 pm 
Offline

Joined: Sun Jun 12, 2011 8:07 pm
Posts: 64
Hi, just seen a powertap G3 laced (20 cx-ray spokes) into shimano 7900-C24 clincher rim (approx 946 grams). For anybody who knows about wheels is this a good idea in terms of stiffness, durability and correct power readings.
I like the idea as I feel going down the powertap route is a compromise in terms of looks and weight if you don't want tubs or carbon clinchers.

Any feedback most appreciated.


Top
 Profile  
 
PostPosted: Sun Nov 18, 2012 5:09 pm 
Offline

Joined: Sat Jul 17, 2010 11:36 am
Posts: 170
Well, you need to supply a bit more background.

How much do you weigh? How much power do you make? Do you plan to use the wheel for racing or training? I would want a more resilient wheel for racing.

Strictly as a hub, not a power meter, the G3 is a *better* foundation for a wheel, but it's still nowhere near the quality of an Alchemy Orc, King R45, or even a White H3. The serviceability of the hub, which allows you to remove the power measurement assembly without having to dismantle or ship an entire wheel, is a major attraction relative to the previous Powertaps.

As a power meter, most seem happy with their Powertaps. As long as they aren't damaged and you pay attention to battery condition, it should give good service. Readings will be slightly lower than crank-based systems due to drivetrain losses, but the numbers will be consistent and representative of what you are actually putting through the wheel. That's all that counts.

It's 325 grams, which makes it the lightest Powertap yet (with the exception of the fractionally lighter and unreasonably priced G3 ceramic).

The C24 doesn't seem like a common choice for for custom builds, and I'm not sure that pairing a low-profile rim with a low spoke count and any Powertap hub could produce anything other than a relatively flaccid wheel. You'd be better off with something like a Kinlin XR270 or 300 to add some rim stiffness, extra spokes for bracing, and cheap replacement if you ever damage the rim. A Kinlin or H-Plus rim would cost less and, in all likelyhood, build a better wheel.

-Tim


Top
 Profile  
 
Posted: Sun Nov 18, 2012 5:09 pm 
  • PowerTap G3
  • 799.00 €   from 774.90 € (including 19% VAT)


Top
  
 
PostPosted: Sun Nov 18, 2012 6:20 pm 
Offline

Joined: Sun Jun 12, 2011 8:07 pm
Posts: 64
Hi, i weight 68 kg and the wheelset would be used for sportives in the UK and frequent holidays to the Pyrenees. I do not race competitively ie road racing, crits, but that does not mean I don't train hard. I thought it was an unusual pairing and i have a relatively unused set oh 7900-C24 in the garage so thought it would be worth investigating.

Ideally i am after a srm campagnolo, but their are a few other things I would also like to purchase such as ax lightness srt 42, so a powertap would be a good comprimise to start with.

I think if I go down the powertap route ambrosio excellight with a powertap or campagnolo front hub will be a safer option. The wheels would be built up in the UK.

Thanks for the advice :thumbup:


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 3 posts ] 


Who is online

Users browsing this forum: Faceman78, Google [Bot], Hastur and 31 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. Powertap SL+ hub change from Shimano to Campa question

in Road

livio livius

0

264

Sun Oct 06, 2013 10:20 am

livio livius View the latest post

There are no new unread posts for this topic. Shimano RS80-C24 vs Shimano WH-9000-C24

in Road

cyronix

14

13647

Sat Jan 11, 2014 11:34 pm

Twinning View the latest post

There are no new unread posts for this topic. Shimano 6870 or Shimano 9000?

[ Go to page: 1, 2, 3 ]

in Road

Ahillock

33

3781

Sat Aug 23, 2014 1:48 pm

Stats View the latest post

There are no new unread posts for this topic. PowerTap SLC+ - any good?

in Road

Bregnhoj

5

560

Mon Jan 13, 2014 7:45 pm

showdown View the latest post

There are no new unread posts for this topic. Powertap users: always or no?

in Road

loudtiger

11

725

Fri Apr 25, 2014 8:42 pm

Stoo View the latest post


It is currently Tue Sep 23, 2014 7:55 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