Gianni, the Opperman Motorcart was fitted with either a J.A.P Douglas aircooled engine. There are a few around at vintage rallies in the UK.
Pete.
the Opperman Motorcart was fitted with either a J.A.P Douglas
Yes, Pete, I was wrong: the engine was a 350 cc mono, the same, I believe, of the famous trial bikes…
But, beside this, any news about the Oppermann brand?
Pagoda66:
the Opperman Motorcart was fitted with either a J.A.P Douglas
Yes, Pete, I was wrong: the engine was a 350 cc mono, the same, I believe, of the famous trial bikes…
But, beside this, any news about the Oppermann brand?
All you need to know in the link below Gianni, I also meant to write that they had either a J.A.P OR a Douglas engine! 
tractors.wikia.com/wiki/Opperman_Motocart
Pete.
Fantastic, Peter: I have looked into that link and now, after years, I know something about the Opperman that Mr. Hornby reproduced…
Yes, I still make mistakes about Bedford Os and Austin K2s. But I am not the only one, I presume.
Regarding to the little orange Dinky breakdown lorry, I think we can say it has been inspired by a Bedford WS…
Any news about its engine?
Greetings from Italy!
Hey, do not leave me alone, please.
What about AEC Mammoth Major MK I, II and III?
Years of production?
Engines?
