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  [ 108 posts ] 
Go to page Previous  1, 2, 3, 4, 5, 6, 7, 8  Next
Author Message
PostPosted: Tue Feb 12, 2013 6:41 am 
Offline

Joined: Sun Feb 10, 2013 5:11 pm
Posts: 84
fdegrove wrote:

What is however a fact is that an exposed rim edge is going to catch wind resistance.

Pace, ;)



I agree wholeheartedly. A too narrow tire on a wide rim IS going to expose the rim edge... So, just because it is narrow don't make it aero. In fact, if it is tooooo narrow it is unsafe for use, especially in crits or really any hard cornering.

So watch out. If the rim has an outside width of 24mm, and you want to use a tire a lot smaller than 24mm, just know your risks.


Top
 Profile  
 
Posted: Tue Feb 12, 2013 6:41 am 


Top
  
 
PostPosted: Tue Feb 12, 2013 9:13 pm 
Offline

Joined: Wed Feb 06, 2013 11:57 pm
Posts: 15
Got some 28h versions of these on route (well as soon as they arrive with the supplier), for some Hope Pro3 hubs. Going 2 cross front and rear with Sapim Laser/Race spokes.
How consistent is the ERD figure? Can they be trusted or is it best to measure for yourself?
Looking forward to it after reading this thread!


Top
 Profile  
 
PostPosted: Tue Feb 12, 2013 10:02 pm 
Offline

Joined: Sun May 16, 2010 7:28 pm
Posts: 628
Does aero on a 26mm rim matter at all? I get that the tire/rim discussion is important because mavic did that plastic aero strip thingy to smooth it out. Their claim was that it was worth1.5 Watts at 50KM/H. So does that mean the discussion of 21mm vs 23mm tires is something along the lines of 0.2W?


Top
 Profile  
 
PostPosted: Wed Feb 13, 2013 2:06 am 
Offline
User avatar

Joined: Tue Apr 18, 2006 3:03 am
Posts: 1882
Location: Islip, NY
I've been working with 587mm instead, but it's very consistent. I'm a proponent of measuring myself. I might round differently when choosing spokes.

Weights are all between 442-448g with the decals (mostly 446 448).

Sent from my DROID RAZR HD using Tapatalk 2

_________________
www.ergottwheels.com


Top
 Profile  
 
PostPosted: Wed Feb 13, 2013 2:17 am 
Offline
Tubbie Guru

Joined: Tue May 03, 2005 2:20 am
Posts: 5793
Location: Belgium
Hi,

kulivontot wrote:
Does aero on a 26mm rim matter at all? I get that the tire/rim discussion is important because mavic did that plastic aero strip thingy to smooth it out. Their claim was that it was worth1.5 Watts at 50KM/H. So does that mean the discussion of 21mm vs 23mm tires is something along the lines of 0.2W?


When paying attention to all the small details even a relatively shallow rim can be made surprisingly aero.
How much difference in Watts is there between a truly aero wheel and a shallow rim anyway? Can't be all that much but whatever is there to be had should not be dismissed.

Ciao, ;)

_________________
Being a snob is an expensive hobby.


Top
 Profile  
 
PostPosted: Wed Feb 13, 2013 5:59 am 
Offline
in the industry
User avatar

Joined: Sun Jul 29, 2012 2:59 pm
Posts: 634
Location: Ruidoso, NM
kulivontot wrote:
Does aero on a 26mm rim matter at all?


Yes. Rim depth is only one small part of the drag equation. Some U shaped 24mm Corima wheels performed very well in Tour's test. So did a lot of "everyday" wheels that had <30mm deep aluminum rims, so long as the yaw wasn't extreme. Very shallow rims with lots of round spokes always have high drag.

The nice thing about these PL23s is that they are rounded on the back, which is good for crosswinds as well.

_________________
formerly rruff...


Top
 Profile  
 
PostPosted: Wed Feb 13, 2013 9:48 am 
Offline
User avatar

Joined: Mon Nov 02, 2009 8:38 pm
Posts: 292
Very interested in this. I notice JRA is now listing them but the price is £88!

http://www.justridingalong.com/pacenti-sl23-rims.html

It might actually be cheaper to get them from the US at that price. :|

_________________
Blog: http://thesetbackpost.com/


Top
 Profile  
 
PostPosted: Wed Feb 13, 2013 10:31 am 
Offline

Joined: Wed Feb 06, 2013 11:57 pm
Posts: 15
MajorMantra wrote:
Very interested in this. I notice JRA is now listing them but the price is £88!

http://www.justridingalong.com/pacenti-sl23-rims.html" onclick="window.open(this.href);return false;

It might actually be cheaper to get them from the US at that price. :|


I thought this as well. However once you add shipping and the charges by customs I think you wouldn't be far off or maybe even over the price from JRA.
Plus if there happened to be an issue with them it's a lot lengthy process to rectify.


Top
 Profile  
 
PostPosted: Fri Feb 15, 2013 12:48 am 
Offline

Joined: Tue Jun 26, 2007 10:44 pm
Posts: 23
By any chance does someone have a close-up of the cross-section of this rim. I looks a little more pointy in the photos than it does in the rendering. I'm trying to decide between this and the Kinlin wide aluminum rim, and the Kinlin looks to be a little rounder...though it's hard to tell from the photos. Thanks!


Top
 Profile  
 
PostPosted: Fri Feb 15, 2013 7:17 pm 
Offline

Joined: Fri Feb 15, 2013 6:57 pm
Posts: 8
I'm getting a pair of Pacenti SL23 wheels built with the new Chris King Shimano 11sp compatible hubs as an anniversary present (great wife!) built by Ergott. I should have them in late March / mid-April, so will post a ride report then. I will also post pictures at that point.


Top
 Profile  
 
PostPosted: Fri Feb 15, 2013 7:34 pm 
Offline
in the industry

Joined: Sat May 12, 2012 7:25 pm
Posts: 1414
Location: Glermsford, Suffolk U.K
And JRA do not know if they will act as a distributor for shops. I am waiting to here from them. Superstar won't either so If I want to start using them I will have to import as well. Well I suppose they are new.

_________________
www.thecycleclinic.co.uk


Top
 Profile  
 
PostPosted: Fri Feb 15, 2013 9:21 pm 
Offline
Shop Owner
User avatar

Joined: Sun Feb 06, 2005 4:22 pm
Posts: 3538
Location: Tucson, Az.
JWTS wrote:
By any chance does someone have a close-up of the cross-section of this rim. I looks a little more pointy in the photos than it does in the rendering. I'm trying to decide between this and the Kinlin wide aluminum rim, and the Kinlin looks to be a little rounder...though it's hard to tell from the photos. Thanks!


The cross section drawings of the two rims in our review are both accurate, we made them from the actual cad drawings used to extrude the rims. http://fairwheelbikes.com/cycling-blog/ ... undup.html

_________________
Fair Wheel Bikes

Fair Wheel Blog

Friend me on Facebook for behind the scenes updates


Top
 Profile  
 
PostPosted: Sun Mar 10, 2013 2:29 pm 
Offline

Joined: Wed Feb 06, 2013 11:57 pm
Posts: 15
I've got a set of these hopefully all finished by mid week and am wondering what pressures to run. I'm 60kg in my riding gear and will be using Conti GP4000S tyres (23mm).
Can anyone help?


Top
 Profile  
 
PostPosted: Sun Mar 10, 2013 3:16 pm 
Offline

Joined: Tue Nov 11, 2003 9:47 pm
Posts: 1736
Location: Santa Cruz, California, USA
For wide rims and 23mm tires I use about 5psi less than I do for 23mm tires on normal width rims.
I have no idea if that is "right" but it seems to work ok.


Top
 Profile  
 
PostPosted: Fri Apr 05, 2013 5:57 am 
Offline

Joined: Tue Feb 19, 2013 6:24 pm
Posts: 11
Location: boston
is anyone carrying 32h yet, or are those coming later in the year?


Top
 Profile  
 
Posted: Fri Apr 05, 2013 5:57 am 


Top
  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 108 posts ] 
Go to page Previous  1, 2, 3, 4, 5, 6, 7, 8  Next


Who is online

Users browsing this forum: Bing [Bot], Exabot [Bot], fcabot, Google [Bot], Google Adsense [Bot], Method01, nlouthan, Yahoo [Bot] and 46 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. Pacenti rim tape

in Road

yongkun

2

557

Sat Nov 30, 2013 4:01 am

yongkun View the latest post

There are no new unread posts for this topic. Waiting for Campagnolo full carbon clinchers

[ Go to page: 1, 2 ]

in Road

poppiholla

19

2118

Tue Jan 07, 2014 4:50 pm

mriddle View the latest post

There are no new unread posts for this topic. And finally , BORA get fat?

[ Go to page: 1, 2, 3, 4 ]

in Road

tallicaboy

46

6562

Thu Aug 28, 2014 6:18 pm

Permon View the latest post


It is currently Wed Oct 22, 2014 1:48 pm

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