XC wheelset options...

Discuss light weight issues concerning mountain bikes & parts.

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nickf
Posts: 758
Joined: Sat Mar 06, 2010 10:34 pm

by nickf

addict wrote:
Mon Oct 29, 2018 5:26 am
Good stopping power, no noise. Brakes sram level ult with organic pads.
Texjur1973 wrote:
Mon Oct 29, 2018 3:28 am
How do you find the stopping power on those Ashima rotors? I'm looking for lighter weight 6-bolt options to swap out for my XT's and have been thinking about these very rotors.
I just switched to the Ashima rotors also. Same stopping power as before and just as quiet. I'm running semi-metallic pads at the moment. They do seem to bend easily but that's not an issue once they are set up. I had a hell of a time getting them on my centerlock to 6 bolt adapters. The holes on the Ashima rotors are extremely precise.

by Weenie


alber84
Posts: 29
Joined: Tue Apr 09, 2019 11:03 am

by alber84

Do not you have vibrations when braking with the ashima?

02GF74
Posts: 587
Joined: Thu Jan 13, 2011 4:04 pm
Location: Sunny UK

by 02GF74

alber84 wrote:
Wed Jul 10, 2019 3:02 pm
Do not you have vibrations when braking with the ashima?
I did especially on the front and found they were poor for stopping. (I'm not a 60 kg racing whippet).

Got rid of them, I'm sticking with hope saw and Deckas brand.

scant
Posts: 165
Joined: Fri Apr 30, 2004 2:05 pm
Location: S.Wales UK

by scant

02GF74 wrote:
Wed Jul 10, 2019 7:14 pm
alber84 wrote:
Wed Jul 10, 2019 3:02 pm
Do not you have vibrations when braking with the ashima?
I'm sticking with hope saw and Deckas brand.
I normally use Hope without issue. I just googled Deckas as i'd never heard of them. do they perform as reliable as the Hope rotors?
ta

scant

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jcrr
Posts: 125
Joined: Wed Nov 30, 2011 4:36 am
Location: Seattle, WA

by jcrr

@addict and @Klaster_1 Nice wheel builds, both of you!

Seemingly cheap 29in wheels that can be seen on fleabay may be a consideration. For example:

1250g https://www.ebay.com/itm/Ultra-light-12 ... 2446600361
Basic specs:
Rim: non-descript, 28mm width, 28H
Hubs: Novatec D411SB D412SB J-bend
Spokes: Sapim CX-ray

1490g https://www.ebay.com/itm/29ER-light-car ... 2998013210
Basic specs:
Rim: non-descript, 30mm width, 28H
Hubs: DT SWISS 350 straight pull
Spokes: Pillar 1423

My question, and pardon me if it's obvious: For lighter XC riders (60kg) who aren't hucking things, what is/are the weak link in wheelsets like the above?
"If it ain't broken, it could be lighter"

TheRich
Posts: 314
Joined: Tue Jan 01, 2019 1:36 am

by TheRich

Rim width on the first set, and the hubs.

I'd gladly pay a small weight penalty for wider ID and DT Swiss hubs, even if they are the heavier 350s.

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jcrr
Posts: 125
Joined: Wed Nov 30, 2011 4:36 am
Location: Seattle, WA

by jcrr

@TheRich -thanks for the insight.

Just wanting to be better informed- What in your opinion is it about those novatecs that would make them less than ideal? That the bearings, even if replaced with quality cartridges, are too small for XC demands, regardless of rider weight and conditions?

I agree about the quality of DT Swiss- I have 180s/240s on a cyclocross set that just keep on working as new.
"If it ain't broken, it could be lighter"

02GF74
Posts: 587
Joined: Thu Jan 13, 2011 4:04 pm
Location: Sunny UK

by 02GF74

scant wrote:
Wed Jul 10, 2019 11:07 pm
02GF74 wrote:
Wed Jul 10, 2019 7:14 pm
alber84 wrote:
Wed Jul 10, 2019 3:02 pm
Do not you have vibrations when braking with the ashima?
I'm sticking with hope saw and Deckas brand.
I normally use Hope without issue. I just googled Deckas as i'd never heard of them. do they perform as reliable as the Hope rotors?
Firstly both have similar hollow rivet to hold the stainless steel rotor to the alloy carrier so it can catch on certain callipers, namely formula r1, it takes a bit of fettling with sram level ultimate.

As for performance, I find hope slightly better but at least 5x the price, the Deckas are a bargain. Not had any reliability issues yet.
There more metal missing from the braking surface the worse I find stopping power.

scant
Posts: 165
Joined: Fri Apr 30, 2004 2:05 pm
Location: S.Wales UK

by scant

thanks for info. I might try Deckas for the winter, wear them out, rather than the more expensive Hopes
ta

scant

TheRich
Posts: 314
Joined: Tue Jan 01, 2019 1:36 am

by TheRich

jcrr wrote:
Thu Jul 11, 2019 5:41 pm
@TheRich -thanks for the insight.

Just wanting to be better informed- What in your opinion is it about those novatecs that would make them less than ideal? That the bearings, even if replaced with quality cartridges, are too small for XC demands, regardless of rider weight and conditions?

I agree about the quality of DT Swiss- I have 180s/240s on a cyclocross set that just keep on working as new.

DT is just a known quantity. I've had problems with some hubs, but never with DT or CK. Ease of service gives them the edge over CK.

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