Disc hub -- Centerlock vs ISO

[Bill Gobie]

I'm about to order a disc brake front wheel. I'd like to get opinions on ISO vs Centerlock discs.

Thanks,

Bill

[Roland Bevan]

Bill,

I feel that the ISO mount, while being slightly less convenient for installation and (supposedly) slightly heavier, gives a more secure attachment for the rotor. I've tried a Centerlock-to-ISO adaptor on a Centerlock hub (older SON hub) and while it worked there was a tiny bit of play on the rotor. For my recent dyno-hub disc brake wheels I have been building with the Shutter Precision hubs which are all ISO mount; no problems so far. For field issues it's easier and lighter to carry a Torx bit or wrench with you (if your multi-tool doesn't already have that) than the centerlock tool, and in a pinch a hex key can be made to work.

  -Roland

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[li...@jkassen.org]

I ride with both types frequently. I've been commuting daily on a Shimano Dynamo with a centerlock rotor for at least
five years though city traffic. I've got 38 traffic lights on my commute so I stop frequently. I've worn down a rotor and
gone though many brakes but I've never had a problem with the centerlock attachment.

Other bikes I own use the traditional ISO mounting and it too has been fine. It's not like I remove the rotor often so the
speed of installation isn't a concern.

I don't think there's anything to worry about or prefer one way or another in this regard.

Jake

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[Bill Watts]

I use centerlock disc brakes because I find they make it easier to pack and reassemble my bike when I travel (I have couplers and load my bike into a suitcase when I fly, and I have to remove the rotors from the wheels).  I have not had any problems in the three years I have used them.

Bill Watts

5365  

[AKThomas]

Actually, Shutter Precision does make center-lock hubs.
I had the same center-lock v. ISO dilemna a few weeks ago, and after much internetting came to the conclusion that either would be just fine.  Pretty much flipped a coin and ordered an SP center-lock hub.  Or at least I thought I did.  When an SP ISO hub arrived in the mail, I decided it definitely was not worth the hassle of sending it back.  (I had not yet ordered a rear hub, so there was no problem with mismatched hubs.)

[Paul Toigo]

IMHO, there is no close second to the Schmidt SONdelux for a rando front hub. No other hub can match the low weight, low drag, and infinite lighting run time afforded by this hub. If you agree, then note the SONdelux is available in a Centerlock, but not ISO, version. Also note the disc version is only available with 32 spoke holes. All just food for thought.

[Jake Kassen]

On Nov 15, 2014, at 5:19 PM, Paul Toigo <toig...@gmail.com> wrote:

> IMHO, there is no close second to the Schmidt SONdelux for a rando front hub. No other hub can match the low weight, low drag, and infinite lighting run time afforded by this hub. If you agree, then note the SONdelux is available in a Centerlock, but not ISO, version. Also note the disc version is only available with 32 spoke holes. All just food for thought.

IMHO, that isn't the least bit true. My SON20R has failed me electronically mid-ride, as has my partner's 20R, and the 20R of a number of local riders. There are a number of dynamo hubs which cost 1/2 the price, are the same weight, and have an equal if not higher electrical output for the same amount of resistance plus use a better connector. I see no reason to pay such a high premium for a component that has nearly left me nearly stranded and offers no real advantage over something far less expensive. Dynamo hubs have come a long way in the past few years, thankfully.

Jake

[Bankshot]

+1 to Jake's comment.
SP designs from Taiwan has a fantastic dyno hub and Victor & Wilfred share info regularly. The SP folks are coming out with a new hub that puts out the same energy but it's the size of a golf ball. Wilfred was pretty positive when he saw it.

Deb Banks

From the RivetPhone

[Paul Toigo]

Based on that report, I rescind my recommendation. There is only 1 SONdelux (AFAIK, identical to the SON20R) in my household and has only been in service for a month. There are 2 other bikes in my household with SON28 hubs. All have performed flawlessly, including my go to bike with over 11k km. So I erroneously extrapolated my experience into that recommendation. I'll also admit that I prefer installing the Shimano connector over the Schmidt.

I'm very interested in references showing a dyno hub that has the "same amount of resistance" as the SONdelux.

[Jan Heine]

At 7:55 AM -0800 11/19/14, Paul Toigo wrote:

>I'm very interested in references showing a dyno hub that has the
>"same amount of resistance" as the SONdelux.

When you look at the big test of generator hub resistance in Bicycle
Quarterly Vol. 11, No. 1, you see that while the SON Delux is
marginally the most efficient, all generator hubs are so efficient
that the performance differences are negligible.

Among the Bicycle Quarterly testers, we've had very good experiences
with the SON hubs over many years and tens of thousands of miles
(hundreds of thousands, if you combine all our mileage).

Disclosure: Bicycle Quarterly's sister company, Compass Bicycles
Ltd., sells SON generator hubs.

Jan Heine
Editor
Bicycle Quarterly
Seattle WA USA
http://www.bikequarterly.com

Follow our blog at http://janheine.wordpress.com/
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[AKThomas]

In my house right now are two dyno wheels--the Son Delux and the SP SD-8 iso disc brake.  In a completely unscientific test of putting them each in a fork, and giving them a spin, the SON will spin about 50% longer than the SP before coming to a halt.  But I really doubt this will be at all noticeable when riding.

[Bill Gobie]

Thanks everyone. As I suspected, ISO and Centerlock are each superior. Since my bike's rear wheel is ISO-ready, I am going to get an ISO front hub so I will only need one tool to remove and install the rotors.

Deb, thanks for highlighting SP hubs. I like the connector and choice of drillings. Schmidt's connectors are a bit ridiculous for the price of the hubs, and 32 spokes is overkill in a 20" wheel.

Regarding SON failures, the first SON20R I had failed. Its warranty replacement has run fine for about a decade now. 

Bill