H Plus Son TB14's in a Colnago Extreme C

Everything about building wheels, glueing tubs, etc.
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Sjoerd
Posts: 272
Joined: Fri Jan 15, 2010 7:22 pm
Location: Les Pays Bas

by Sjoerd

Hi all,

I'm thinking of having a set of wheels built with H Plus Son TB14 rims, but I have some concerns that they will not fit my Colnago Extreme C (with a Star-fork). I know the tolerances are tight. Is there anyone with any real life experience? I plan to ride the wheels with 23c tires.

I ride Continental 4 Seasons in the "off season" and Veloflex Masters when the weather permits is. Both run pretty true to their size on my Campagnolo Neutron Ultra wheels.

Thanks for your comments!

by Weenie


dudemanppl
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Joined: Fri Feb 22, 2013 5:09 am

by dudemanppl

Fit my Extreme Power fine with 25mm (26-27mm measured) tires.

AJS914
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Joined: Tue Jan 28, 2014 6:52 pm

by AJS914

My C59 easily fits 25mm tires (GP5000TL) on 25mm wide rims (19mm internal).

23mm tires should be more than fine on your Colnago. Weren't 23mm wide tubulars the standard when the frame was made?

The tire that people seem to have trouble with on older Colnagos is the 25mm GP4000 primarily because it's a very tall tire. The width is usually not the issue.

alcatraz
Posts: 2673
Joined: Mon Aug 29, 2016 11:19 am

by alcatraz

If the country of origin is any indication of the real width then german tires (conti) run wide and italian (vittoria, maybe veloflex) run narrow.

What's the fork's inner width?

Slammed
Posts: 156
Joined: Sun Feb 01, 2015 12:32 am

by Slammed

You should be fine. Wider rims are actually better because they flatten out the tire a bit. My friend's lightweights with 23mm Vittoria tubulars don't fit on his extreme c because they're too tall.

petromyzon
Posts: 438
Joined: Mon Apr 05, 2010 4:14 pm

by petromyzon

Slammed wrote:
Tue Dec 17, 2019 6:30 am
You should be fine. Wider rims are actually better because they flatten out the tire a bit. My friend's lightweights with 23mm Vittoria tubulars don't fit on his extreme c because they're too tall.
This is not usually true unless the rim is too wide for the tyre to be safe on it. Wider rim = taller AND wider tyre, by a small degree.

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Sjoerd
Posts: 272
Joined: Fri Jan 15, 2010 7:22 pm
Location: Les Pays Bas

by Sjoerd

Thanks for the replies all!
alcatraz wrote:
Tue Dec 17, 2019 12:26 am
What's the fork's inner width?
I measure it at around 37 mm. It's not so much the width I am concerned with, but the height. Didn't Eupberg (hope I'm getting his name right) made a small modification to his C50 or EP-fork to accomodate 25 mm tires?

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Sjoerd
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Location: Les Pays Bas

by Sjoerd

eurperg is his user name!

alcatraz
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Joined: Mon Aug 29, 2016 11:19 am

by alcatraz

If you could shim the dropout you could maybe gain a mm or two of clearance.

DolanDriver
Posts: 15
Joined: Sat Feb 08, 2020 11:14 pm

by DolanDriver

I am going to get a pair of 32 hole TB14s built up for my Colnago C40. The hubs will be Campagnolo C Record (2004, I think) and I will initially run them on Kenda Kontach 23mm tyres. I weigh 76KG so not too much of a heavyweight. The bike will be used in dry conditions only but will probably encounter the best and worst when it comes to road surfaces here in Ireland. I want to fit stainless steel spokes. I am looking for advice on what spokes to use with regard to building a solid wheel but at the same time using relatively light spokes. Discussing lightweight wheels and the TB14 is a bit of a contradicition in terms :D but when I assessed the rim-and-tyre weight of the TB14 versus the rim-and-tubular weight of a Nemesis or Crono F20, the difference was not going to be all that great. The weight saving using an Ambrosio rim was negated by using tubulars that weigh more than a folding tyre. Plus the convenience of the tyre-and-tube format just makes the decision a no-brainer.

Heart said 28 hole F20s, head said 32 hole TB14s!

What lightweight spokes can I safely use in the front wheel?
What spokes should I use on the rear drive-side?
Can I use a lighter spoke on the non-drive side in the rear?
Is it actually worth the hassle of sourcing different spokes and how much more expemsive is it likely to be if I mix spokes versus using 64 of the same model of spoke?

Thanks for any advice anyone can offer. :beerchug:

DolanDriver.

P.S. I test-fitted a pair of TB14s with 25mm Schwalbe Durranos fitted to my C-40 and clearance on the front fork and the rear brake bridge were no problem.

AC0
Posts: 24
Joined: Mon Aug 02, 2010 2:33 am

by AC0

DolanDriver wrote: What lightweight spokes can I safely use in the front wheel?
What spokes should I use on the rear drive-side?
Can I use a lighter spoke on the non-drive side in the rear?
Is it actually worth the hassle of sourcing different spokes and how much more expemsive is it likely to be if I mix spokes versus using 64 of the same model of spoke?
I build early 2000 chorus hubs with TB-14 rims using Lasers on the front and NDS rear, Race on DS. With 32 spokes it should be no problem at your weight.

The only hassle of using different spokes front/rear and NDS/DS is buying a few more extra as spares if the required spoke lengths happen to match. All Laser is $10-$15 more than all Race.


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DolanDriver
Posts: 15
Joined: Sat Feb 08, 2020 11:14 pm

by DolanDriver

Thanks. I'll say it to the guy in the shop to build the wheels up this way. Hopefully he doesn't tell me to clear off with this idea to lace them up with different spokes!

DolanDriver

alcatraz
Posts: 2673
Joined: Mon Aug 29, 2016 11:19 am

by alcatraz

Those rims are really shallow. Better not try your luck with fewer than 32. The front being 28 or 32 could be debateable I think.

If the spoke lengths come out the same it would be tempting to just use the same spoke.

If the spoke count is low then the wheel merits a stronger spoke but seeing as you have 32 I'd consider the range of possible choices quite wide.

AC0
Posts: 24
Joined: Mon Aug 02, 2010 2:33 am

by AC0

alcatraz wrote:
Tue Mar 03, 2020 2:29 am
If the spoke lengths come out the same it would be tempting to just use the same spoke.
I used Laser 298mm front and NDS rear, Race 296mm DS rear. I think the chorus hub has the same geometry as record if they are the same vintage.

by Weenie


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