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PostPosted: Wed Oct 04, 2017 12:10 am 
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Posts: 159
Location: Santa Barbara
I'm looking to do a clincher build. Since magnesium rims are so hard to source, are any of the Chinese companies doing a (carbon) shallow clincher rim under 370g?

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Last edited by whydobearsxplod on Wed Oct 04, 2017 12:10 am, edited 1 time in total.

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Posted: Wed Oct 04, 2017 12:10 am 


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PostPosted: Wed Oct 04, 2017 9:26 am 
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"in the days" we had sub 400 gram rims and frankly they were awful... they turned into a Pringle at the first opportunity... I had a pair of Wolber that did just that. Aluminium extrusion techniques have not improved that much and I am inclined to think that the only way to achieve a decent sub 370 gram alloy rim is to shave off a significant portion of the brake track, which in turn means they will be dangerous (overheating the inner tube) and won't last.

I would look at carbon if you are that concerned about rim weight. A 350 gram clincher carbon rim will be solid

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PostPosted: Wed Oct 04, 2017 10:10 am 
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whosatthewheel wrote:
"in the days" we had sub 400 gram rims and frankly they were awful... they turned into a Pringle at the first opportunity... I had a pair of Wolber that did just that. Aluminium extrusion techniques have not improved that much and I am inclined to think that the only way to achieve a decent sub 370 gram alloy rim is to shave off a significant portion of the brake track, which in turn means they will be dangerous (overheating the inner tube) and won't last.

I would look at carbon if you are that concerned about rim weight. A 350 gram clincher carbon rim will be solid



Which is why the OP's title mentions CARBON clincher rims.
Nice 30th post.

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PostPosted: Wed Oct 04, 2017 11:07 am 
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mdeth1313 wrote:


Which is why the OP's title mentions CARBON clincher rims.
Nice 30th post.


Pretty sure I read alloy earlier this morning... maybe it was TOO early in the morning... :lol:

Are you one of the nice guys on here?

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PostPosted: Wed Oct 04, 2017 11:30 am 
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Location: Wilmington, DE
whosatthewheel wrote:
"in the days" we had sub 400 gram rims and frankly they were awful... they turned into a Pringle at the first opportunity... I had a pair of Wolber that did just that. Aluminium extrusion techniques have not improved that much and I am inclined to think that the only way to achieve a decent sub 370 gram alloy rim is to shave off a significant portion of the brake track, which in turn means they will be dangerous (overheating the inner tube) and won't last.


[off topic] In contrast, I commuted for years on 390 gram IRD Cadence rims, built with 32 DT Revolution spokes up front and 16/16 Revo/Comp in the rear, alloy nipples, American Classic hubs (disc up front) for a wheelset weight in the 1450 gram range. The only major issue I had was cracking my front hub on a pothole in the rain at night. Rims held up fine and I still ride that bike, just less than I used to (~7000 miles/year from 2009-2012).


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PostPosted: Wed Oct 04, 2017 12:08 pm 
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Joined: Wed Jan 22, 2014 11:48 am
Posts: 2424
Location: Vienna Austria
I had a 1220g 23x25mm clincher wheelset from Farsports - the rims must have been in that ballpark.

I never had problems over the 2 years I rode them, but the guy I sold them to - lighter than me & a driving instructor who should know how to use the brakes - melted the front on his 2nd ride.

I asked Farsports, but they couldn't source the same rim again :(

You can get 400g 25x25mm clincher rims from Light Bicycle though, my set weighs 1280 on Bitex hubs.


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PostPosted: Tue Oct 10, 2017 3:23 am 
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You get the LB 25mm rims that Marin mentioned. Then you take advantage of the good stiffness and only use 16/20 spokes. So what you don't gain at the rim you get back with the spokes.


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PostPosted: Tue Oct 10, 2017 5:38 am 
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Posts: 388
Kinlin xr200's really are 380gr. Alloy and dirt cheap taiwanese rims.

/a


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PostPosted: Tue Oct 10, 2017 8:50 pm 
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Posts: 159
Location: Santa Barbara
Looks like farsports has a 380g clincher rim in 38mm depth.

I suspect these could go under 1100g with extralite hubs and steel spokes.

Farsports offer extralite hubs on some tubular builds. I'm going to see if they would put them on a clincher.

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PostPosted: Wed Oct 11, 2017 5:42 am 
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Location: Melbourne, Australia
alcatraz wrote:
Kinlin xr200's really are 380gr. Alloy and dirt cheap taiwanese rims.

/a


I rode Kinlins (28h rear laced to DT240s, 20h front laced to Alchemy ELF).

Light yes, but super thin and very soft. Bought Shamal C17's a year ago and regret the last 4 years riding the Kinlin rims.

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PostPosted: Wed Oct 11, 2017 5:28 pm 
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robertbb wrote:
alcatraz wrote:
Kinlin xr200's really are 380gr. Alloy and dirt cheap taiwanese rims.

/a


I rode Kinlins (28h rear laced to DT240s, 20h front laced to Alchemy ELF).

Light yes, but super thin and very soft. Bought Shamal C17's a year ago and regret the last 4 years riding the Kinlin rims.


Not very easy to find light and great performing ones. Might need to compromise.

/a


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PostPosted: Thu Oct 12, 2017 1:08 am 
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Joined: Thu Jul 23, 2009 3:35 am
Posts: 140
Location: Melbourne, Australia
alcatraz wrote:
robertbb wrote:
alcatraz wrote:
Kinlin xr200's really are 380gr. Alloy and dirt cheap taiwanese rims.

/a


I rode Kinlins (28h rear laced to DT240s, 20h front laced to Alchemy ELF).

Light yes, but super thin and very soft. Bought Shamal C17's a year ago and regret the last 4 years riding the Kinlin rims.


Not very easy to find light and great performing ones. Might need to compromise.

/a


Agreed. What I'm stressing to OP here is that weight isn't everything (hope this doesn't get me banned from WW). Stiffness translates both to improved torque uphill, and width translates to improved handling downhill - not to mention comfort...

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PostPosted: Thu Oct 12, 2017 3:37 am 
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Posts: 159
Location: Santa Barbara
Robertbb, your point is well taken. I have widened my search for my perfect clincher build. Deeper, wider rims are looking better and better even at a bit of weight penalty.


Sent from my iPhone using Tapatalk

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PostPosted: Thu Oct 12, 2017 4:54 am 
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Posts: 1165
Pretty sure lateral stiffness has little to do with the rim material or width on a properly tensioned wheel. Wider hub bracing angles, heavier spokes and increased spoke counts are typically the recipe for stiff wheels.
There are legitimate reasons to opt for wide/carbon rims, but i feel like that has more to do with aerodynamics and tire volume than lateral stiffness.


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PostPosted: Thu Oct 12, 2017 5:00 am 
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Joined: Tue May 08, 2012 3:10 am
Posts: 159
Location: Santa Barbara
Edit: double post.

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Posted: Thu Oct 12, 2017 5:00 am 


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