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PostPosted: Wed Jan 09, 2013 4:26 pm 
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Joined: Mon Apr 19, 2010 10:33 pm
Posts: 167
As far as latex I've just used normal sized tubes in big tires without an issue. I've found the Grand Bois tires to be tough to get on, so if you find the Eroicas to be harder than those they must be tough.

Still Im not understanding how the tube is and issue. I put one bead on then bput the tube on and stuff it into the tire, rim channel, then put the other bead on. Not quite picturing your problem.


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Posted: Wed Jan 09, 2013 4:26 pm 


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PostPosted: Wed Jan 09, 2013 4:34 pm 
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Joined: Tue Feb 08, 2011 10:28 am
Posts: 112
Location: North Bend, WA
BTW, Have been using the same set of Challenge Paris-Roubaix 27mm tubie for 2 seasons on multiple Kermesse type races and no issues with punctures. I ride them at the minimum recommended psi. performed really well.

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PostPosted: Wed Jan 09, 2013 4:40 pm 
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Joined: Tue Apr 12, 2011 8:08 am
Posts: 2012
Location: Pedal Square
Martin, which bike (and brakes)? Do they clear easily?

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Bikes: Raw Ti, 650b flatbar CX


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PostPosted: Wed Jan 09, 2013 5:14 pm 
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Joined: Wed Jun 25, 2008 6:08 am
Posts: 224
I couldn't get my 27mm PR to mount onto some DT 1.1 rims, stretching, and days of effort and still nothing. I swapped them onto a set of Roval wheels, and though they were hard, they went on decently well. I'm sure the actual rim size had something to do with it. Glad I didn't get them onto the 1.1s, I'd shudder to think what a roadside flat fix would be like!
My 27mm tires inflate to 30mm wide on the Roval wheels, which are 22mm wide external, 17mm wide internal...and plenty of clearance on my S-Works Roubaix.


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PostPosted: Fri Jan 11, 2013 1:25 am 
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Location: North Bend, WA
wassertreter wrote:
Martin, which bike (and brakes)? Do they clear easily?

2009 Jamis Xenith SL with Sram Red brakes and Reynolds MV32 tubies is my Kermesse bike. There was a micro touch of the tire against the front brake so I filed the caliper a bit.

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PostPosted: Fri Jan 11, 2013 7:10 am 
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Joined: Mon Jan 10, 2005 10:47 am
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Location: somewere floating between here and the other side
I have a set of paris roubaix lying in the cupboard they dont fit my colnago ep or my merckx mx !);


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PostPosted: Fri Jan 11, 2013 11:17 am 
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Joined: Fri Jun 17, 2005 4:11 pm
Posts: 463
Challenge also has the new Strada tyres in 25mm width.


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PostPosted: Mon Jan 21, 2013 9:50 am 
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Formerly known as wassertreter

Joined: Tue Apr 12, 2011 8:08 am
Posts: 2012
Location: Pedal Square
Finally some new info from the horse's mouth regarding puncture protection:
challenge wrote:
[...] Eroica and Almanzo tires and these are equipped with PPS 2.
PPS 2 (Puncture Protection System) is a double protection that is placed on the inside of the tire
and visible to the eye. An extra layer of our puncture proof material protects the tubes from penetrating
objects.
Under the tread there is also another strip of puncture protection.

They are slightly smaller than Grifo XS but still a good volume. Section of Eroica and Almanzo are 30.

http://www.challengetech.it/products/ro ... 0/00521/en

The Erocia has the same tread pattern as the Paris Roubaix.

viewtopic.php?f=4&t=106642#p953039

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