29er to be or not to be?

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Re: 29er to be or not to be?

Postby silentbutdeadly » Fri Dec 02, 2011 10:20 am

sblack wrote:Took for a short ride that afternoon with my daughter. First impression.. it's certainly a lot harder work than the roadie but to be expected with the extra weight and big offroad tyres and fine cruising along at her speed. The brakes are much better than when I tried some mechanical discs in their early days and have good modulation instead of just being on or off like they where back then. They really pull the wheel to the side though. Don't know if it's in the fork, wheel or combination of the two and I don't notice it in the ride but it's visable and with much wider tyres or under really hard braking I think the tyre would come into contact with the fork.


Well scored, sir.

I'll wager that the front brake issue is a combination of the fork and wheel. They probably aren't quite stiff enough to counteract the braking force delivered by the disc. It's unlikely that the wheel will torque enough to contact the fork but anything is possible I suppose.

This issue is why you often see QR15 front axles & hubs on the more high spec bikes. Instead of a 10 mm threaded tube and a traditional QR, the axle and QR are combined in a 15 mm tube that goes through the fork leg and wheel bearings and screws into a nut in the fork leg on the other side. Tighten up the QR cam on this axle and you have a very stiff front end that is very resistant to twisting forces from the brake and rough ground....
Ours is not to reason why...merely to point and giggle
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by BNA » Fri Dec 02, 2011 9:13 pm

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Re: 29er to be or not to be?

Postby sblack » Fri Dec 02, 2011 9:13 pm

silentbutdeadly wrote:I'll wager that the front brake issue is a combination of the fork and wheel. They probably aren't quite stiff enough to counteract the braking force delivered by the disc. It's unlikely that the wheel will torque enough to contact the fork but anything is possible I suppose.

This issue is why you often see QR15 front axles & hubs on the more high spec bikes. Instead of a 10 mm threaded tube and a traditional QR, the axle and QR are combined in a 15 mm tube that goes through the fork leg and wheel bearings and screws into a nut in the fork leg on the other side. Tighten up the QR cam on this axle and you have a very stiff front end that is very resistant to twisting forces from the brake and rough ground....
The current 2.1 tyre comes pretty close, I was thinking a 2.5 would probably touch, but then again the conditions I'd be considering a 2.5 for may see the tyre losing traction before that point, it has been on the road that I've noticed it getting close. QR15 definitely sounds worth considering in possible future upgrades but at this point in time, to get the component level on the Apollo and QR15 was out of my budget.

Stopped for a photo on the way home this arvo, click the image for full size pic in the gallery Image.
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