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PostPosted: Fri Dec 17, 2010 8:33 pm 
rider | rBoTM Winner
rider | rBoTM Winner
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Joined: Fri Jan 25, 2008 1:42 pm
Posts: 5133
Location: Wakefield, Yorkshire
Image not showing unfortunately (well, not for me at any rate :cry: ) Looking forward to seeing the frame, sounds great.

EDIT - it's appeared now!! Looks terrific - has he got any more!?

Stick to the Brooks Pro saddle, lots of Italians used them. Are there any decent Italian Leather saddles?


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PostPosted: Fri Dec 17, 2010 8:52 pm 
Dirt Disciple

Joined: Sun Dec 05, 2010 9:22 am
Posts: 21
Na Sorry old ned :(
No more of the Alans
He has this though, Nice if the time was spent restoring it
http://cgi.ebay.nl/EDDY-MERCKX-CORSA-EX ... 5addacb260


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PostPosted: Mon Dec 20, 2010 11:41 am 
retrobike rider
retrobike rider
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Joined: Tue Jan 29, 2008 11:04 pm
Posts: 1802
Location: A wretched hive of scum and villainy...
Leeh wrote:
Quote:
also some Glue. Now this should be fun, I'Ve never fitted tubs , I've heard that if you haven't fitted them before , you could get in a right mess, is this true? I dont want to make a right pigs ear of it.


It's not properly retro, I suppose, but I always use tub tape rather than glue. I have a selection of makes:

Image

Maybe French Jantex is the closest to original, and right for a French frame. One roll=2 wheels £3-4...Good retro packaging too :wink:

Velox and Nutrak sell a very similar product, but personally I use the Tufo extreme, which sticks like s*** to a blanket straight away, and has the plastic carrier tape, which makes it far easier to use than the paper systems...a bit more expensive though (1 pack = 1 wheel £6 ish).

Plenty of YouTube stuff on fitting tubs... www.youtube.com/watch?v=uUlFn4lpFQo

All the best,


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PostPosted: Mon Dec 20, 2010 1:57 pm 
Dirt Disciple

Joined: Sun Dec 05, 2010 9:22 am
Posts: 21
Hello Dan, thanks for that!
I did see some YouTube post on fitting tubs, what ever happens I'll give a go with the tape, it certainly looks easy enough
Did you say my Alan is french? Alan's are pure Italian (Alberto Falconi) is owner of the company, unless you were whining me up :lol:


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PostPosted: Mon Dec 20, 2010 2:35 pm 
retrobike rider
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Joined: Tue Jan 29, 2008 11:04 pm
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Location: A wretched hive of scum and villainy...
Sorry. of course Alan is Italian. :shock: I always get them mixed up with the Vitus 979 Duralinox frames.

mmm...I don't know any Italian tub tape...it'll have to be Vittoria glue instead :wink:

All the best,


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PostPosted: Thu Dec 23, 2010 3:10 pm 
Dirt Disciple

Joined: Sun Dec 05, 2010 9:22 am
Posts: 21
I have now got those super champion wheels, one thing I did noticed was how slim the Rims are, I put a ruler on them, inside dish looks to be about 15mm, out side edge to edge 20mm, I have never had experience with tubs, the tyres I have, 'Schwalbe Milanos' that Dan suggested are 22mm,

Will these fit OK ?


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PostPosted: Sun Dec 26, 2010 1:38 pm 
retrobike rider
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Joined: Tue Jan 29, 2008 11:04 pm
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Location: A wretched hive of scum and villainy...
Leeh,

Your 20mm rim width is probably about right for a 22-23mm or larger tub. Remember that the rim doesn't go 180 degrees around the tyre. Because they don't have the hooked flanges of a tyre rim, the tub rim actually covers less of the tyre section than a conventional rim.

With tubs, the rim width has less effect than normal tyre/inners, where the rim width affects the shape and cross section that the tyre/tube forms. Even the 2.2"/56mm mountainbike tubs around now are fitted to only 25mm wide rims.

With tubs, the most important measurement is the diameter of curve of the tyre seat. You should find that a circle approximately the size of your tub cross section ie 22mm should sit nicely on the curve of the rim tyre seat without any gaps, allowing for the thickness of any adhesive. Try a mountainbike handlebar, 1" quill stem, wedding ring, or 7/8" 22.2mm copper pipe. Alternatively, pump up the tub a little and offer it up to the rim section to check. Don't worry about the pressure turning it inside out. It can take full pressure even off the rim.

If the tub is too small for the rim, there wil be gaps at the sides. This stops the glue/tape working at the sides, and the tub can roll. The tubs will also be far harder to get sat straight. Fit the tub on the rim without adhesive and see what it looks like, a sheet of paper should be a nice tight fit in the gaps around the sides.

Less serious is a big tub on a small rim, where the centreline of the tub isn't in contact with the rim, but there's still not really enough adhesive in contact to be safe.

This is why, even though those Assos rims were really narrow at 16mm wide, the curve of the tyre seat was still shaped to take up to a 22mm tub.

I hope that helps....All the best,


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