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Hi I'm about to buy my first Ducati ! and need some help identifying the proposed bike..
Its advertised as a '75 250cc Desmo - its immaculate condition and quite expensive so I want to make sure its original and not a clone and i've noticed in the picture that it has Marzocchi forks with a Drum brake. I may be wrong but I thought that all singles from '73 onwards were fitted with a disc ?

Also how can I tell that its a Desmo and not an ohc ?

thankyou very much for any information you might be able to help me with..

and btw, a brilliant site - its helped me immensely

richard

hey richard, check out the brochure gallery, you won;t see too many singles with disk brakes, just a couple by the way.

http://www.bevelheaven.com/brochure-index.htm

I am no expert on singles but there are some out there who will chime in soon with info for you.

desmo vs OHC

desmo is the fact that there are no valve springs, there are opening and closing rockers for the valves

OHC is overhead cam

The outside cam bearing housing (above the sparkplug) is different between desmo and non. They are physically different and cannot be interchanged. DESMO will be clearly spelled out on the casting.

Hugh

I hope you were able to get your 250, Richard. I bought a new Desmo 450 in 1973. At the time, all Desmo's had Marzochhi forks and drum brakes, at least in Australia. The discs arrived when the yellow tank model came out, superseding the silver fibreglass tank. I still have a spare four-shoe front brake that I had better put on eBay. I'm not going to use it now.
regards
Robert