Weight Weenies
* FAQ    * Search    * Trending Topics
* Login   * Register
HOME Listings Blog NEW Galleries NEW FAQ Contact About
It is currently Wed Aug 24, 2016 7:54 am
Recently the board software has been updated and there are some known bugs/failures:
- Avatars are currently not being displayed ✔ FIXED
- Tapatalk connection is currently broken ✔ FIXED
- Avatars cannot be uploaded ✔ FIXED

Please note that we will soon do some changes in WW board template design in case to get a fully mobile/desktop responsiveness board!
If you find more errors please post it here: http://weightweenies.starbike.com/forum/viewtopic.php?f=7&t=139062


All times are UTC+01:00




Post new topic  Reply to topic  [ 21 posts ]  Go to page 1 2 Next
Author Message
PostPosted: Thu Jan 16, 2014 5:35 pm 
Offline

Joined: Thu Apr 08, 2004 6:19 am
Posts: 590
Location: nr Derby, UK
Has anyone seen/held these at all? As best I can tell they're not the same as found in any of their wheelsets. I'd prefer actual experience--I can make up all the conjecture and so-on I like on the basis of a few images and a cross-section!
I was considering getting some new wheels this year and had pretty much settled on something with the Pacenti SL23s, but these looked like a potential alternative.


Top
   
PostPosted: Wed Apr 09, 2014 10:07 pm 
Offline
User avatar

Joined: Wed Mar 05, 2014 12:26 am
Posts: 47
I think the only information about this rim on the whole world wide web is one builder's opinion in this thread:
http://forums.roadbikereview.com/wheels ... 16125.html
One other user on that forum also posted a picture of their cross bike running these rims.

These seem like they would be an upgrade all around from Kinlin XR19W and the only sub-400g alternative to Stan's Alpha 340 which have thin brake surfaces and don't hold tires securely.


Last edited by pam on Sun Apr 13, 2014 2:37 am, edited 1 time in total.

Top
   
PostPosted: Fri Apr 11, 2014 9:20 am 
Offline

Joined: Thu Apr 08, 2004 6:19 am
Posts: 590
Location: nr Derby, UK
Interesting. As you say, that makes them sound like a decent alternative. The lower profile works for me aesthetically, so now I'll have to see if I can find some!


Top
   
PostPosted: Thu Apr 17, 2014 11:57 pm 
Offline
User avatar

Joined: Thu May 21, 2009 6:32 am
Posts: 13
Location: Cumming GA
We have built about 20 pairs of them since they have been released. They are better than the Stans Alpha 340's as they are torsionally stiffer. The only down side to them are the lack of a welded seam. For there weight I give them a thumbs up. However they will not be a super durable rim and they will give you a fair amount of vertical compliance which is great for rough surfaces but not great for high corner power scenarios such as Crits. I would not recommend building them with a super light spoke such as a CX Rays unless you are 160lbs or less and would not put a rider over 200lbs on them. Hope this helps.

_________________
"If the frame is the heart of the bicycle, the wheels are its soul". Richard Craig

www.prowheelbuilder.com


Top
   
PostPosted: Fri Apr 18, 2014 1:06 am 
Offline
User avatar

Joined: Wed Mar 05, 2014 12:26 am
Posts: 47
Thanks, that is helpful. Compliance is good for what I want, I'm not racing, and the extra tire volume for no weight over a XR19W should be nice. I realized these are almost exactly the same dimensions as the Mavic A119 rims I have on my touring bike, just ~375g instead of 540g.


Top
   
PostPosted: Fri Apr 18, 2014 1:11 am 
Offline
User avatar

Joined: Thu May 21, 2009 6:32 am
Posts: 13
Location: Cumming GA
Just to be clear, these are not in any way good for touring. Would not want to see you stranded in BFE :).

_________________
"If the frame is the heart of the bicycle, the wheels are its soul". Richard Craig



www.prowheelbuilder.com


Top
   
PostPosted: Fri Apr 18, 2014 5:00 am 
Offline
User avatar

Joined: Wed Mar 05, 2014 12:26 am
Posts: 47
I thought about clarifying that but decided against it previously. I'm definitely not touring on these, hopefully putting them on my light fixed gear build in the gallery.


Top
   
PostPosted: Fri Apr 18, 2014 11:29 am 
Offline
User avatar

Joined: Thu May 21, 2009 6:32 am
Posts: 13
Location: Cumming GA
All the better as the rear wheel will be built more symmetrically helping to add the torsional rigidity.

_________________
"If the frame is the heart of the bicycle, the wheels are its soul". Richard Craig



www.prowheelbuilder.com


Top
   
PostPosted: Fri Apr 18, 2014 6:58 pm 
Offline

Joined: Thu Apr 08, 2004 6:19 am
Posts: 590
Location: nr Derby, UK
Sounds alright as I'm a shade under 150lbs. How would you compare them to the Velocity A23?


Top
   
PostPosted: Fri Apr 18, 2014 8:23 pm 
Offline
User avatar

Joined: Thu May 21, 2009 6:32 am
Posts: 13
Location: Cumming GA
Although the A23 may be a bit stiffer both vertically and laterally I prefer the tubeless profile of the AC 2218 and the 2218 is much lighter (by about 60 grams per rim which is roughly equal to 18 lbs per climbing mile in moment of inertia weight). Both are not that great when it comes to the seem as both are not welded. I am not as concerned about strength but more concerned about the seem shifting (which typically occurs during the stress relieving process). Its more of a pet peeve than a serious concern.
So my conclusion is if it were between those two rims I would pick the A23 for daily use and the 2218 for a great climbing wheelset or rough rough road wheel set (given your 150lb weight).

_________________
"If the frame is the heart of the bicycle, the wheels are its soul". Richard Craig



www.prowheelbuilder.com


Top
   
PostPosted: Mon Apr 21, 2014 3:27 pm 
Offline
in the industry
User avatar

Joined: Sun Jul 29, 2012 2:59 pm
Posts: 846
Location: Ruidoso, NM
Image

http://amplewritings.blogspot.com/2013/ ... eless.html

Note he says it was a NDS spoke. Since it is triplet laced I'd expect the NDS side to be most highly stressed (lateral forces) and the angle is extreme. Ideally a triplet rim should have an asymetric inner wall.

It also appears to have a small bead lip like the 340, so I suspect it will suffer from the same issue of some tires not hanging on very well.

_________________
formerly rruff...


Last edited by WMW on Mon Apr 21, 2014 3:44 pm, edited 1 time in total.

Top
   
PostPosted: Mon Apr 21, 2014 3:35 pm 
Offline
User avatar

Joined: Thu May 21, 2009 6:32 am
Posts: 13
Location: Cumming GA
Have yet to see this happen with any of our builds using the 2218 rims. However it is very important that they not be built over 120 kgf.

_________________
"If the frame is the heart of the bicycle, the wheels are its soul". Richard Craig



www.prowheelbuilder.com


Top
   
PostPosted: Mon Apr 21, 2014 3:49 pm 
Offline
in the industry
User avatar

Joined: Sun Jul 29, 2012 2:59 pm
Posts: 846
Location: Ruidoso, NM
prowheelbuilder wrote:
Have yet to see this happen with any of our builds using the 2218 rims. However it is very important that they not be built over 120 kgf.


That one was built by AC. And it was a NDS spoke on a triplet, which surely wasn't too highly tensioned.

Lowering tension doesn't prevent fatigue on aluminum, but it can make it last long enough that you don't care.

How much does tension drop with a tire installed? On the 340s it's a lot.

_________________
formerly rruff...


Top
   
PostPosted: Tue Apr 22, 2014 3:11 am 
Offline
User avatar

Joined: Wed Mar 05, 2014 12:26 am
Posts: 47
The rim pictured is ~310 instead of 390g and 21 instead of 18mm deep, meaning thinner walls. The user also says they had trouble bringing the spokes back up to tension once the tires were mounted but never says what tension is, leaving the possibility of user error. AC claims they use the same tensions for all spokes in a triplet wheel, meaning the spoke that cracked the rim should have been at full DS tensions statically, but potentially seeing higher tension than the DS in use from lateral forces on only 8 spokes.

AC is the only one crazy enough to make ~300g rims and there are few people crazy enough to use them for everyday wheels.


Top
   
PostPosted: Tue Apr 22, 2014 4:23 am 
Offline
in the industry
User avatar

Joined: Sun Jul 29, 2012 2:59 pm
Posts: 846
Location: Ruidoso, NM
I have a set of early 340 rims that actually weighed 336g and 349g. 20f, 24r CXRays. Old Alchemy hubs that are ~20g heavier than the ACs. They weight 1185g... 1197 with Stan's tape. Versus the authors 1258g with tape. So let's call it about 70g heavier rims (pair). Which puts them at 377g each... roughly. Maybe the new ones are a little thicker at the spoke which would be nice.

And he increased the tension only to try to compensate for the large drop in tension with tires mounted, to keep the spokes from working loose. I'm not a big fan of tubeless rim design, especially with light rims. Tension always varies a lot depending on the tire that is mounted.

Rims like that are best for light riders anyway, and triplet needs a pretty strong and stiff rim to work well. I think it would be better with normal lacing and more spokes.

_________________
formerly rruff...


Top
   
Display posts from previous:  Sort by  
Post new topic  Reply to topic  [ 21 posts ]  Go to page 1 2 Next

   Similar Topics   Author   Replies   Views   Last post 
There are no new unread posts for this topic. american classic carbon tubular 46mm

in Everything wheels

lella81

1

437

Mon Jan 04, 2016 11:30 pm

smoby View the latest post

There are no new unread posts for this topic. American Classic Sprint 350's frozen spokes advice needed

in Everything wheels

oscarnz

2

164

Fri Mar 18, 2016 11:43 pm

Marin View the latest post

There are no new unread posts for this topic. Deep rims or shallow rims for cyclocross?

[ Go to page: 1 2 ]

in Cyclocross / Gravel / Touring

nickcube

22

1565

Fri Dec 18, 2015 11:43 am

rasmussloth View the latest post

There are no new unread posts for this topic. Tire size and aero rims: how almost every clincher user defeats the purpose of aero rims

[ Go to page: 1 2 ]

in Everything wheels

nemeseri

29

1546

Wed Aug 24, 2016 7:01 am

Stueys View the latest post

There are no new unread posts for this topic. Where is the Canyon North American Annoucement?

in Road

morrisond

5

555

Tue Feb 02, 2016 6:02 am

jimborello View the latest post


All times are UTC+01:00


Who is online

Users browsing this forum: No registered users and 1 guest


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