Re: [CR] 1981 rare motobecane team champion / 22.0 stems


Example: Events:Cirque du Cyclisme:2007

From: Arno Volkers <arnovolkers@hotmail.com>
To: <classicrendezvous@bikelist.org>
Date: Sun, 30 Jan 2011 19:05:05 +0000
In-Reply-To: <9636B5B487B44053894692FA8D1AC619@ddddPC>
References: <361948.39032.qm@web25901.mail.ukl.yahoo.com>
Subject: Re: [CR] 1981 rare motobecane team champion / 22.0 stems


has anybody seen the handlebar tape? it's quite unique it's made by hutchinson for Motobecane, it is one piece of rubber that looks like a leather stitched handlebar, when you look at the brake lever rubbers you can see that al is integrated, the handlebar "tape" and the brake lever rubber are made of one piece.

http://www.wooljersey.com/gallery/Arno/motobecane/DSC04741.JPG.html http://www.wooljersey.com/gallery/Arno/motobecane/DSC04739.JPG.html http://www.wooljersey.com/gallery/Arno/motobecane/DSC04740.JPG.html

this means in my opinion that the brakes are original, the 605 weinmann brakes

regards

Arno Volkers bredestraat 37 2000 antwerp belgium
> From: dddd@pacbell.net
> To: classicrendezvous@bikelist.org
> Date: Sat, 29 Jan 2011 09:37:44 -0800
> Subject: Re: [CR] 1981 rare motobecane team champion / 22.0 stems
>
> I believe that loose tolerances explain much confusion about this issue.
> I've seen stems labeled 22.2 that were much closer to, or actually were,
> 22.0, and the steerer in my Gitane SuperCorsa is also near to 22.2mm.
> When I decided to replace the Pivo Professional bars/stem on the Gitane with
> Cinelli (since the original bars on this 60cm bike were only 34cm wide), I
> selected a 22.2mm Cinelli stem because it required only light/moderate
> sanding to fit perfectly.
>
> More commonly, a 22.2mm stem will require lengthy, heavy sanding/filing to
> fit into a normal, say Peugeot, steerer, but this time it was a breeze, and
> I recall it was both steerer and stem quill in this case that were on the
> "loose" side of spec.
>
> As for steerer strength, no worries. Only the thickness up where it's
> threaded should be of much concern, as the lower end is heavily butted. As
> long as the stem expands below the threads I'd say it's plenty strong, tho
> many steerers have way more threaded length than is needed.
>
> On a related note, in searching for longer-extension stems for my Schwinn
> Super-sports, I've found several brands of stems that have 21.1mm quill
> diameters but which have the same I.D. (bolt hole size) as the similar
> 22.2mm model (GB, Nitto, SR and Compe) stems. All appeared forged, save
> maybe for the Nitto Young, but still plenty strong.
>
> David Snyder
> Auburn, CA usa
>
>
> Hugh Thornton wrote:
>
>
> Some bikes with 25mm French-threaded steerers do take 22.2 mm stems, but I
> have never been sure whether that was because of tolerances in the steerer
> tube or subsequent reaming or by intent from the factory. I have one such
> bike and take comfort from the fact that it has a wooden plug up the steerer
> to reduce the probability of a catastrophic failure. A standard French
> steerer tube has less wall thickness than a 1" one, and even less with a
> 22.2 mm hole down the middle.
>
> 22.0 mm Cinelli stems appear from time to time on French eBay, but you need
> to be a bit cautious - one vendor told me a stem was 22.0, but when it
> arrived I measured it at 22.2. I don't think he was trying to deceive
> because I asked him the non-leading question of whether it was 22.2 or 22.0.
> I think there is more chance that the vendor knows what he is talking about
> if the item description states 22.0.