Building/riding a front disc wheel with 20 holes

Everything about building wheels, glueing tubs, etc.
Post Reply
vanmatthew
Posts: 82
Joined: Thu Jul 14, 2016 5:20 am

by vanmatthew

So I'm thinking about rebuilding one of my Flo Cycling rims that's currently on a carbon TI front hub (non disc) into a disc brake on a DT Swiss 240 20 hole front hub.

Flo said it's ok to use their Brake rims for a disc build (I already have a set built and have used it for the last two years).

My question is safety. DT Swiss wouldn't sell a 20 hole disc front hub if they didn't have confidence in it right? Does anyone currently ride with a 20 spoke disc front wheel?

by Weenie


alcatraz
Posts: 2263
Joined: Mon Aug 29, 2016 11:19 am

by alcatraz

If you don't weigh over 75kg, build the wheel with good nipples and spokes at even proper tensions, I don't see why it wouldn't work.

I don't suggest to use huge rotors but smaller ones so that you kind of limit the torque you put through the hub.

DamonRinard
in the industry
Posts: 392
Joined: Fri Apr 29, 2011 8:32 pm
Location: Connecticut, USA

by DamonRinard

vanmatthew wrote:
Wed Aug 22, 2018 4:06 am
Does anyone currently ride with a 20 spoke disc front wheel?
Hi vanmatthew,

As an example, all Cannondale SystemSix Knot64 wheels are disc brake and have 20 spokes in front. New in the market, but early production wheels have been ridden lots.

If you cross all the spokes (not half-radial), then 20 are enough to transmit all the braking torque of a single bike (but not a tandem).

Other aspects of good wheelbuilding obviously still apply: tension, etc.

Cheers,
Damon
Damon Rinard
Engineering Manager, Road Bikes
Cycling Sports Group, Cannondale
Ex-Kestrel, ex-Velomax, ex-Trek, ex-Cervelo

vanmatthew
Posts: 82
Joined: Thu Jul 14, 2016 5:20 am

by vanmatthew

Awesome thanks a lot. Yeah I really take my time in my builds and get the tensions to be within 5% slightly below the max tension. I am at 80kg though. I guess I can wait and lose some weight while I wait for the hub to come in. Thanks

Post Reply
  • Similar Topics
    Replies
    Views
    Last post