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PostPosted: Sat Nov 24, 2018 10:49 pm 
rBoTM Winner
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Joined: Thu Dec 13, 2012 6:54 pm
Posts: 389
Bespoke wrote:
...
ALTEC were produced by a smaller company in Villeurbanne near Lyon. At first glance they looked much like Duralinox frames but on closer inspection they were more refined in that the ends of the tubes were profiled to give a splined appearance, and the seat-stay tops were more elegant - a type of wrap-over. The Spanish team BH used them both in aluminium-tubed and carbon-tubed versions for a couple of years.

...


...here it is a rebuilt replica of such an ALTEC carbone used end of 80s by Spanish Team BH Sport for
climbing stages like arrive to Lagos Cavadonga

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here a pic from Vuelta 1989 left side Fede Etxabe on a ALTEC
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PostPosted: Sat Nov 24, 2018 11:33 pm 
rBoTM Winner
rBoTM Winner

Joined: Thu Dec 13, 2012 6:54 pm
Posts: 389
Bespoke wrote:
...
However other smaller French manufacturers had made bonded alloy frames before Vitus and possibly before Alan, firms such as DURAVIA and CMP..both based in the Lyon area. Certainly the Duravia looked very much like an Alan..or vice-versa ! In the mid-70s Vitus had a project underway to produce a bonded frame, in the first instance using their steel tubes bonded into steel lugs, following a series of frames made by a St Etienne-based builder called MIOSOTIS. Then VITUS teamed up with him to produce a frame using steel external lugs with aluminium tubes bonded into them..this tended to look a little like an ALAN. A variation on this frame made in about 1976/77 had aluminium tubes bonded into large aluminiun lugs..a bit like an ALAN

...


one of this smaller French companies was C.M.P. a company of a French engineering couple M Claudius Masson and Mme Claudine Masson born as Mlle Poyet with seat in Lyon

here a pic of an earlier cadre C.M.P. Dural - C.M.P. present their frame set in line with Italian company ALAN - both got their lugs from French Aluminium foundry CLB so anyone can think about … technical knowledge transfer from where to where…
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PostPosted: Sun Nov 25, 2018 12:36 am 
Retro Guru
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Joined: Thu Jun 23, 2011 11:25 pm
Posts: 2098
Location: It's not easy being a dolphin.
Still a lovely read thanks to the great past input and now with picture examples. A short question with a comprehensive reply at it's best :D

I still have a scratch for a Alan CX. In the meantime, my trusty Miyata MTB hack (bonded AL maintubes, Cro-Mo stays) keeps me going.


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PostPosted: Sun Nov 25, 2018 1:51 am 
rBoTM Winner
rBoTM Winner

Joined: Thu Dec 13, 2012 6:54 pm
Posts: 389
last not least ...here the ALTEC's bonded AL version … it was build in 80s like Vitus 979 Dural
Please look this beautifull combination of Pechiney Aluminium and CLB lugs … but I sold it in meantime

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PostPosted: Mon Nov 26, 2018 4:45 pm 
rider | rBoTM Winner
rider | rBoTM Winner
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Joined: Fri Jan 25, 2008 1:42 pm
Posts: 5344
Location: West Yorkshire
Very nice, love the seat cluster design. How is the seat pin held? Is there an allen key grub screw built into the frame or does the seat pin have an internal expander like the carbon Vitus?


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PostPosted: Mon Nov 26, 2018 9:49 pm 
rBoTM Winner
rBoTM Winner

Joined: Thu Dec 13, 2012 6:54 pm
Posts: 389
here… same principle as a classic stem
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