or perhaps the crankset is a replacement for a (perhaps) stock single chainset, and whoever replaced it swapped the chainwheels to get better chainline?
ray said he has the original alloy guard for the chainwheel - if this is what i think it is, its an alloy disc that would be mounted where the small chainwheel is. perhaps since this is removed, some former owner saw fit to fill out the resulting space on the chainwheel bolt with a chainwheel...
most of the duravias ive seen pics of, like the mecadurals and avaics as well, seem to be single-chainwheel town bikes and light tourers...
-joel
At 16:09 -0800 02.13.2007, Fred Rafael Rednor wrote:
>Dale,
> I was so intrigued by this bike - and so surprised by the
>crankset - that I spent a long time studying the photos. Which
>is to say that the chainrings _appear_ to be assembled in the
>correct sequence. You have to look very closely as the shape
>of the mounting "tangs" on the rings, as well as the munting
>bosses on the inside of the crank arms.
> Here's my theory: since there's no front derailleur on this
>bicycle, the chain is moved from ring to ring - by hand - when
>the bike is stationary. In this sort of situation, I think the
>task would be more easily performed when the smaller ring is on
>the outside. Also, is it possible that the crankset came with
>only a single chainring and that the smaller ring was added
>later? Or was there once a front derailleur that has been
>removed and misplaced over the years?
> Cheers,
> Fred Rednor - Arlington, Virginia (USA)
>
>--- oroboyz@aol.com wrote:
>
>> Very, VERY neat bike, Ray! Thanks for showing it to us.
>>
>> I have never heard of that marque but obviously a pretty
>> unusual early aluminum model.
>>
>> Looks like maybe the chain rings were reassembled at some
>> point in reverse?
>>
>> No obvious marks from f. der mounting so I have no idea on
>> that count.
>>
>> I am interested to see what others say.. (I love this list
>> just for such moments!)
>> Dale Brown
>> Greensboro, North Carolina USA
>>
>>
>> -----Original Message-----
>> From: rgoudey@mac.com
>> To: classicrendezvous@bikelist.org
>> Sent: Tue, 13 Feb 2007 4:32 PM
>> Subject: [CR]Metal Aviation Duravia
>>
>> Newbie question here.
>> I primarily collect Balloon Tire bikes from the late 30's to
>> the early 40's.
>> But I am becoming interested in the touring bikes that era
>> (approximately).
>>
>> Getting to my question. I recently picked up a "what appears
>> to be" a
>> French touring bike. The head tube badge reads Metal Aviation
>> Duravia.
>> The seat and the grips were replaced as the brake cables and
>> shoes.
>> Any information about this bike would be greatly appreciated.
>> Year made? It looks like early 50's ?
>> Correct seat? Ideal...if so what model?
>> Type of grip?
>> Light? Is it missing a bezel?
>> Would it have had a Simplex Front Derailleur?
>> I have the aluminum guard that mounts to the chain ring.(not
>> pictured)
>>
>> Click on link for pictures.
> > http://homepage.mac.com/
>>
>> Thanks for time,
>> Ray
>> --
>> Ray Goudey Illustration
>> 4017 Crescent Point Rd.
>> Carlsbad, Ca 92008
>> 760-729-8173
>>
>>
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>>
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>
>
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--
joel metz : magpie@blackbirdsf.org : http://www.blackbirdsf.org/
bike messengers worldwide : ifbma : http://www.messengers.org/
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portland, oregon
==
i know what innocence looks like - and it wasn't there,
after she got that bicycle...