Madfiber wheels in the house!!!

Questions about bike hire abroad and everything light bike related. No off-topic chat please

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wojchiech
Posts: 459
Joined: Thu Feb 24, 2011 6:33 pm
Location: bay area, california

by wojchiech

jwilliams wrote:Madfibers claim a 2nd in the PRO race in San Diego this weekend, the guy who took first was 17 years younger !!! and on a Time RXR.


ahh, the Pista Palace Team. The guy who won has a twin brother on the same team who I used to go to school with. Good to see him doing well. :beerchug: and cool to see a relatively new wheel doing well in real-world race situations.



also, here's a video of Madfiber that roadbikereview put up for NAHBS:

http://www.youtube.com/watch?v=g9pjSP97PNc

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djconnel
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Location: San Francisco, CA
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by djconnel

bluhorizan wrote:Still wonder why they went with a full 60 mm/ 66 mm wheel profile rather than a more all around 45 mm profile. Could the structure be inherently stronger with the shorter, flat spokes.


Pez already addressed this. Spokes are glued to the rim so the angle for attachment is better with deeper rims, he says. Unclear to me from this photo:

Image

by Weenie


rruff
Shop Owner
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Location: Alto, NM

by rruff

Yep, I'm not really seeing the angle being an issue... seems like gluing the spoke to the opposite side of the rim would be best if that was case.

Chipotle
Posts: 7
Joined: Wed Oct 27, 2010 3:09 am

by Chipotle

Spokes are glued to the opposite side of the rim, and the rim depth was chosen so that the spoke interfaces at the same angle as the rim. This results in a joint that is loaded in pure shear, as adhesive is strongest in shear. You want to avoid tensile stress, and more importantly, peel stress, in adhesive joints.

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CharlesM
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Location: Phoenix Arizona

by CharlesM

The spokes and rim are bonded in a very wide contact patch to the opposite side of the rim to the hub. They pull directly in line and the angle is an important part of the structure...

It's not really accurate to describe it as glued to the rim... There is a lot of material at the transition from rim to spoke spreading the load to a very large portion of the rim.

kdogg32
Posts: 92
Joined: Thu Oct 22, 2009 2:54 pm

by kdogg32

I think it's great that Madfiber is giving LW, Reynolds, and Mavic a run for their money because in the end, riders are going reap the benefits. $2,600 is a steal (relative of course) and will hopefully drive carbon wheel prices down. :P

maxima
Posts: 348
Joined: Fri Oct 17, 2008 9:37 am

by maxima

Should add a 1k or 3k fiber range to complete with LW Or Bora. The stickers are crap as well. They will get this right someday and move up the ladder of high end wheel

fleshpile
Posts: 33
Joined: Sat Feb 23, 2008 8:27 am

by fleshpile

Why'd they use a 90 degree weave pattern for the spokes? Tension is only being applied in one direction so it would be lighter to use unidirectional carbon for the spokes.

cmh
Posts: 449
Joined: Wed Oct 11, 2006 12:07 am
Location: San Francisco, CA

by cmh

Interesting review...not sure if it was posted or not...
http://www.bikeradar.com/gear/category/ ... lset-44586

rruff
Shop Owner
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Location: Alto, NM

by rruff

cmh wrote:Interesting review...not sure if it was posted or not...
http://www.bikeradar.com/gear/category/ ... lset-44586


Some observations:

Spokes seem to be under-tensioned if they are becoming unloaded during typical riding conditions. This will adversely effect stiffness.

Oscillations at 35-40 mph... caused by imbalance... and all light rims do this?

The WI hub design with the set screw and collar isn't inherently problematic, but I don't know about this application.

cmh
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Location: San Francisco, CA

by cmh

rruff wrote:
cmh wrote:Interesting review...not sure if it was posted or not...
Oscillations at 35-40 mph... caused by imbalance... and all light rims do this?


Are you asking this or stating this?

rruff
Shop Owner
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Location: Alto, NM

by rruff

Did you read the review? That's where I got it.

cmh
Posts: 449
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Location: San Francisco, CA

by cmh

I wasn't sure if you were agreeing with them or not.

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USofChay
Posts: 425
Joined: Tue May 25, 2010 11:24 pm

by USofChay

fleshpile wrote:Why'd they use a 90 degree weave pattern for the spokes? Tension is only being applied in one direction so it would be lighter to use unidirectional carbon for the spokes.

Cosmetic layer?

Zigmeister
Posts: 921
Joined: Mon Jan 24, 2011 8:09 pm

by Zigmeister

So what happens when a spoke or two gets mangled? Is is repairable like a regular tubular with spokes where a rebuild is just done and away you go? Or is it an expensive conversation piece now of what once was?

by Weenie


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