15mm through axle vs QR for 29er?

[eddy]

What tyres are you running?

 

Crossmark LUST rear and Saguara front, both tubeless.

Edited May 8, 2012 by eddy

[Captain Fastbastard Mayhem]

 

ROFL. Damn, those are some good masking skills right there... Not!

[rock]

tune 15mm for the weennies

 

http://fairwheelbikes.com/images/tune_dc15_parent.jpg

[splat]

that someone like Johan could probably answer its about 40grams on the fork, then obviously your thru axles weigh more than your QR's, not sure about the internals on the hubs, vs having adapters.

 

 

From what I can gather from the interwebs, the QR15 fork is about 80 or 90g heavier

The through axel is about 15g heavier than a standard skewer

and I am not sure there is much difference in the hub as its usually an adaptor that is replaced.

[covie]

Honest question :

 

I rode my new 29er frame this weekend and for the first time was riding a through axle after a lifetime on QR.

 

Running my tires at 1.7bar in front and a bit more in the rear, I found that the (excuse the layman's terminology) sideways flex in the tire was masking any increase in noticable "stiffness" between the two.

 

What was I doing wrong ?

 

 

At first guess if its the "tyres" that are flexing i would assume your running your pressures to low, if it was the rims that are flexing, it could just be that the rims are not stiff enough like some lower end rims, or you might need to look at your spoke tension as they might not be running true.

[rpedro]

Build a new 29er and I enjoy the fact that my front rotor is always perfectly aligned. On the front I have 15mm tru-axels and NO rotor rub is a joy not evens rubbing when I am standing and putting down the power.

 

Rear wheel still 9mm and managed to shift the wheel twice already. I plan on replacing my normal 9mm with the DT Swiss RWS levers.

 

http://www.dtswiss.com/Products/Components/RWS/RWS-MTB-(1).aspx

[Iwan Kemp]

Crossmark LUST rear and Saguara front, both tubeless.

 

The sideways flex you refer to is most likely the tire rolling on it's carcass. Most likely cause for that is too low pressure for that particular tyre model and size. Go up in 5psi increments till it's fixed - chances are you're not far off.

 

Just remember that not everyone can feel the increase in stiffness as we don't all brake and corner the same, ride the same terrain or have the same riding style. Not to mention speed...

[rpedro]

From what I can gather from the interwebs, the QR15 fork is about 80 or 90g heavier

The through axel is about 15g heavier than a standard skewer

and I am not sure there is much difference in the hub as its usually an adaptor that is replaced.

 

Not if I look at the fox website:

 

32 FLOAT 29 100 FIT RLC

 

Weight

• 9mm open drop-out
  3.73 lb / 1.69 kg (1 1/8" steerer)
  
• 15QR (includes axle)
  3.92 lb / 1.78 kg (1 1/8" steerer)
  3.88 lb / 1.76 kg (1.5" taper steerer)
  

And please not the weight of the 15mm includes the axle weight ;-)

[arendoog]

I have both on two different bikes. Stiffness overated.Get proper wheelset instead

[mr HED]

So what frame have you decided on? Are you going Hope hubs if you decided Maxle?

no matter where i look the santa cruz tallboy carbon is calling me! its light enough for the climbs and soft enough for consecutive days of riding. what worries me about santa cruz is the 2 year frame warranty - how can the 'best bike in the world' have such a crap guarantee. other makers are at least 5 years

[splat]

Not if I look at the fox website:

 

32 FLOAT 29 100 FIT RLC

 

Weight

• 9mm open drop-out
  3.73 lb / 1.69 kg (1 1/8" steerer)
  
• 15QR (includes axle)
  3.92 lb / 1.78 kg (1 1/8" steerer)
  3.88 lb / 1.76 kg (1.5" taper steerer)
  

And please not the weight of the 15mm includes the axle weight ;-)

 

You are correct!

 

so weight difference is almost negligible (30g ?)

[sometime]

I'm willing to bet that in a "blind" test at least 95% of riders will not be able to distinguish which skewer system was fitted to two identical bikes in a back to back test. But like most "upgrades" done by most non-pro's the placebo benefits will justify the "upgrade".

[Iwan Kemp]

I'm willing to bet that in a "blind" test at least 95% of riders will not be able to distinguish which skewer system was fitted to two identical bikes in a back to back test.

 

...but only cause you'll smash into the first tree!

[Nimby]

I really don't think through axle's are a worthwhile upgrade i.t.o. either stiffness increases or weight savings. But, if you're buying new I don't see the harm in going to the new "standards" - unless you have an older wheelset that you want to use with hubs that can't be converted.

BTW, I did the "conversion" on my AM Classics - very simple job - slide the QR "axle" out and the 15mm sleeve in. You do need 2 cone spanners though.

[mr HED]

I really don't think through axle's are a worthwhile upgrade i.t.o. either stiffness increases or weight savings. But, if you're buying new I don't see the harm in going to the new "standards" - unless you have an older wheelset that you want to use with hubs that can't be converted.

BTW, I did the "conversion" on my AM Classics - very simple job - slide the QR "axle" out and the 15mm sleeve in. You do need 2 cone spanners though.

i currently have a steel 29er with xt 2012 and fox fork (qr). so wanted to move all of this onto me new bike and to build up the steel bike as SS.

 

if i want to go 15mm i need to buy new fork and keep the old one on my SS. (although i prefer to go rigid fork for front on my ss). can you convert your rear AM classic to 12mm rear?

[covie]

I really don't think through axle's are a worthwhile upgrade i.t.o. either stiffness increases or weight savings. But, if you're buying new I don't see the harm in going to the new "standards" - unless you have an older wheelset that you want to use with hubs that can't be converted.

BTW, I did the "conversion" on my AM Classics - very simple job - slide the QR "axle" out and the 15mm sleeve in. You do need 2 cone spanners though.

 

It all depends on how technical the stuff is that you ride, if you do normal XC with the odd peace of singletrack then no you wont notice a difference, If you like the rough stuff then you can see one hell of a difference.

 

Well in my humble opinion at least. I am now sitting with a choice to either get upgrades on the cheaper QR version wheelsets and forks, or pay more for customized wheelset and limited choice in 20mm forks for XC bikes. Im rather spending the money I can see a major differnece especially in rocky rough singletrack on how my front end tracks and behaves. Its worth the money in my opinon.