Bike Forums - View Single Post - Allegro database ... does one exist?

10-07-20 | 07:46 PM

#66

rustystrings61

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Joined: May 2013

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From: Greenwood SC USA

Bikes: 2002 Mercian Vincitore, 1982 Mercian Colorado, 1976 Puch Royal X, 1973 Raleigh Competition, 1971 Gitane Tour de France and others

J

Quote:

Originally Posted by capnjonny

Just got this donated to the Bike Exchange . purported to be a 1974 Allegro Special. I was looking for info on it and found this thread . I am sure it is a repaint . It looks like it was none recently. The lettering doesn't look quite right on the decals. They are applied over the paint and look new. It has a serial no. plaque on the side of the seat tube 259846. It has Campi dropouts and fork ends. I don't see any chrome on either. Was told it had swiss thread on the bottom bracket cups. It does have Campi shift levers and the cable guide near the bottom bracket. Since I don't have any campi wheels or derailleurs it will probably get a mash up of parts , Super champion wheels, weinman levers and brakes, a stronglight crank and an interesting rear der that I am going to keep a secret for now . Please let me know what you think of the frame. Even if it is a bit pretentious to call it a Special It looks pretty nice.

h
Those look like the Bocama Professionals that replaced the model 14 pattern II c.1974-75. The headset stack height of the steerer would be a useful clue as to which variant you have. The only stock braze-on fittings I see are the diver’s helmet stop on the chainstay and (presumably) the ingot with the serial number. The top tube cable guides are later additions. Check to seeif the seat tube takes a 26.6 or a 26.4 mm seat post. I suspect it will be 26.6.

I would also check the steerer with a good digital caliper. I suspect that is NOT the original fork but is instead a British replacement that also has Campagnolo tips and a Vagner PL crown. Stock would involve a Nervor metric steerer, 25.0 outer diameter with 25.0 x 1 metric/French threads vs. 25.4 with British threads. Not so long ago I sold a LeJeune with what appeared to be its stock fork, only for it to turn out to be a British threaded replacement that featured the same PL crown. It happens.

Allegro 531-tubed frames appear to have come in A, B and C parts mixes. A was full Campagnolo with a Campagnolo headset. B was Campagnolo hubs and derailleurs, Stronglight V4 headset, Weinmann centerpulls, Stronglight 118 BB and crankset. C was alluded to in catalogs but not pictured and appears to have had the steerer cut to accommodate the shorter stack height of a Stronglight P3 and was fitted out with Weinmann sidepulls and lesser parts. I have one of those that came to me with a serious mishmash of parts that I have steered closer to period, if not stock.

Last edited by rustystrings61; 10-07-20 at 07:53 PM.

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