125 desmo

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Bevel bob
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Location: Bromley Kent UK.

125 desmo

Postby Bevel bob » Fri Dec 21, 2018 10:15 am

Does anyone know when the 125 desmo was fitted with a duplex frame? 1957 , 58 or59? I'm trying to fathom out a 125 that has a duplex frame but a DOHC V/spring motor.

HMBAtrail
Posts: 93
Joined: Wed Aug 16, 2017 4:07 am
Location: Indpls, IN

Re: 125 desmo

Postby HMBAtrail » Fri Dec 21, 2018 3:01 pm

According to Falloon, the duplex cradle frame for the 125 desmo was developed mid-1957 for Spaggiari. The double cradle frames continued for 1958.

Not sure if that helps you or not but there you go.

Bevel bob
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Location: Bromley Kent UK.

Re: 125 desmo

Postby Bevel bob » Fri Dec 21, 2018 3:12 pm

Hi, What was the publication?, may see if I can get a copy.

Eldert
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Joined: Sun Nov 01, 2009 3:23 pm
Location: Hazerswoude Rijndijk Netherlands

Re: 125 desmo

Postby Eldert » Fri Dec 21, 2018 5:07 pm

the 1971 125 scrambler has a duplex cradle frame . it was fitted witm a 5 speed Mototrans engine


Image



Eldert

Bevel bob
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Joined: Thu Apr 15, 2010 8:01 am
Location: Bromley Kent UK.

Re: 125 desmo

Postby Bevel bob » Fri Dec 21, 2018 6:31 pm

Hi Eldert, I am particularly interested in the works racer frames as used on the GP and desmo 125's , Trying to trace the history of a late 50's bike that could have been a desmo and is now a DOHC springer. The above frame does show some similarities with the lineage coming through a decade later.

Eldert
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Joined: Sun Nov 01, 2009 3:23 pm
Location: Hazerswoude Rijndijk Netherlands

Re: 125 desmo

Postby Eldert » Sun Dec 23, 2018 9:48 am

nothing wrong with a twin cam valve springer

Image


Eldert
Last edited by Eldert on Sun Dec 23, 2018 12:07 pm, edited 1 time in total.

DBDBrian
Posts: 197
Joined: Mon Mar 30, 2015 11:29 pm

Re: 125 desmo

Postby DBDBrian » Sun Dec 23, 2018 10:40 am

Absolutely beautiful, but I could not live with those plastic oil pipes and jubilee clips.
Brian
Made in England

Bevel bob
Posts: 1043
Joined: Thu Apr 15, 2010 8:01 am
Location: Bromley Kent UK.

Re: 125 desmo

Postby Bevel bob » Sun Dec 23, 2018 11:00 am

The one I have seen has the same motor but in a full duplex frame which makes me wonder if it was once a works Desmo. Would really enjoy the ownership but security worries are holding me back. Plus so noisy that opportunities for exercising the beast would be very restricted.

Eldert
Posts: 771
Joined: Sun Nov 01, 2009 3:23 pm
Location: Hazerswoude Rijndijk Netherlands

Re: 125 desmo

Postby Eldert » Thu Dec 27, 2018 3:27 pm

Hi Bob

in 1958 the 125 Desmo's had double cradle frames .

here a picture of Dave Chadwick at the start on the isle of Man in 1958

Eldert
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double diamond
Posts: 555
Joined: Thu Apr 28, 2011 1:20 am

Re: 125 desmo

Postby double diamond » Fri Dec 28, 2018 4:10 am

Have a look on philaphoto.com. Phil has files on several 125 GP models. One file suggests that the full cradle frame was introduced on the factory desmo and was subsequently carried over to customer bialbero specification. I also seem to recall statements that the factory would replace the heads on desmos (which were typically not released) with a bialbero and sell to customers. A more definitive answer is possible but would take hours of researching the documentation.

Matt


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