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PostPosted: Sat Oct 12, 2013 6:10 pm 
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Joined: Tue Sep 11, 2012 6:07 pm
Posts: 668
Location: The Taint of the USA!
Gentlemen, welcome to the Great State of Texas! They chip-sealed almost every road we ride on down here in S. Texas. It was so bad that we contacted TxDOT, who told us that the reason the rough grade stuff was used (and not finish rolled, as normal) was that it would save about 20% of the cost, and last about as long as the stuff they used to use. Some of the roads that were covered weren't in the best of shape, but even the cracks in the road surface that were there are still there, and have reappeared on the new surface (except now they're harder to see, since it's a dark crack on dark surface).

Needless to say, we have found new routes to ride on, until those get resurfaced next year. This is the primary reason I switched back to tubeless tires, and I'll probably go with a Domane next year.

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2013 Madone 5, Superfly
2012 SpeedConcept 7, Cobia


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PostPosted: Sun Oct 13, 2013 6:55 pm 
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Joined: Sun Jul 29, 2012 2:59 pm
Posts: 634
Location: Ruidoso, NM
When I was researching chipseal, Texas seemed to be the worst... called "boulder seal". There is a huge variance in how bad chipseal is depending on the size of aggregate and how it is finished. I think the riders who don't believe chipseal is that bad are blessed to have road departments that are using small aggregate.

If riding on that stuff was going to be my only option, I'd seriously look into a good frame with really fat tires. Probably a cyclocross or gravel bike. This guy a big proponent of 42mm wide 650B tires for riding on all road surfaces, and he sells fast tires for that purpose: http://janheine.wordpress.com/2013/09/2 ... on-losses/

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Posted: Sun Oct 13, 2013 6:55 pm 


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PostPosted: Mon Oct 14, 2013 5:54 am 
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Joined: Wed Sep 26, 2007 1:57 pm
Posts: 7371
Location: San Francisco, CA
In the latest edition of his magazine, he test-rode a 650B Calfee Adventure bike by riding it 600+ km on a mixed paved/gravel route climbing 10 km of vertical without sleep.... now that's a test ride!

And the day before he took out a drill, balpeen hammer, and file to reposition the front rack lower.

Needless to say, if you lend Jan Heine a test bike for review, don't expect to get it back in pristine condition.

In any case, he certainly backs up his views with real riding.

Here it is:
Image

His assessment, BTW, was that the brakes worked well but they caused some fork flex which resulted in a slight sterring moment during braking. It was an interesting observation, something I suppose mountain bike designers already figured out with through-axles. But his assertion is that you want road bike forks to flex to absorb shock, but then for the disk brake you want to make them stiff to absorb braking torque, so these conflict. With rim brakes the braking torque is not transmitted through the fork, so there's no such conflict.

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PostPosted: Mon Oct 14, 2013 5:10 pm 
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Joined: Sun Jul 29, 2012 2:59 pm
Posts: 634
Location: Ruidoso, NM
Yes... lots of beefed up modifications on MTBs are a direct result of the switch to disc brakes. And when I see how much time the guys at the local shop spend bleeding brakes I wonder what the point is... definitely not seeing it for road bikes.

Have you ever roller tested Jan's tires? Panaracer tires in the past have usually done poorly, but those Grand Bois Supers look promising.

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PostPosted: Thu Oct 17, 2013 9:19 pm 
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Location: San Francisco, CA
I've ridden Grand Bois on my Ritchey Breakaway and I like them. I've not done any roller tests, however.

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