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[Chris Tindal]

If you have the Clipper crankcase then I'd use that, the Bullet gearbox and clutch case should go straight on. Is the frame 250 or 350?

[enfield_trials]

Hi Chris

It is 1957 clipper 250 frame. as shown below ,i did some measurement with my friend royal enfield trials .. frame doesnt need too much of work.

Thanks & Regards
ET

[Chris Tindal]

The 250 and 350 Clippers had very different crank cases. You'll have to modify some Bullet engine plates or make some custom ones for the front down tube as the 250 has a completely different down tube end.

[enfield_trials]

Yes chris .. you are right , i need to make engine mount plate or modify it. 250 frame have curve like end.

Thanks

[enfield49]

I presume this is the 250 clipper from about 1955. The engine / gearbox were not bolted up and were connected with steel plates. There was a 350 version of this bike often called the model G deluxe made in 54/55 . Any model G engine will fit your frame not the later G2 engines used in the Bullet and, confusingly, in later 350 clippers. You will need the separate gearbox engine gearbox plates and a suirable primary chaincase to suit your engine gearbox configuration. Graham

[Adrian]

It might just be easier to use a Bullet frame. Is this project intended to be registered for the road?



http://www.hitchcocksmotorcycles.com/frames-frames



A.

[enfield_trials]

Thanks for yr reply enfield49 adrian
The frame is lighter than bullet it seems for sure lighter than bsa c15 frame i have. I have logbook with frame.

[Adrian]

No bottom rails under the engine on these Royal Enfields, that will save a lb or two! A.

[enfield49]

I googled enfield model g trials and some nice pictures of a rigid frame bikes came up . Bonhams apparently sold a very ratty swinging arm trials G back in 2013 and pictures of this come up which should give you some idea of the parts you need . Don't start me on C15 frames , that swan neck steering head is appalling . Graham

[Adrian]

The factory also thought better of that design, the 1963-on C15T frame was also good enough for the Starfire, B44 Victor and Army B40 with a few lug and bracket changes. A.