Motoscrubs.com

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.

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.

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

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






Eldert

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.

nothing wrong with a twin cam valve springer




Eldert

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

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.

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

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