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2024-06-11, 20:02:05
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2024-06-08, 18:30:04
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xman has two very nice 1950's machines available - a green 1950 mk4 and black 1951 mk5 - both in good condition and running well.


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2024-06-03, 08:23:05
For Sale
Duncan has just listed his green and cream 1957 Dragonfly for sale with spares and documents.


2024-06-02, 08:34:05
Parts avalable
alistair still has parts available - barrels, carburettor, castings - see all listings.


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250 crankcase breather

Started by Parsnips, 08 Sep 2021 at 08:27

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Can anyone assist me with identifying what is the correct fitting to mate with the holes on the top of the timing gear case in the photo?

[embed image. 08Sep21 -Doug, Admin]



Many thanks Doug, it shouldn't be too difficult to make up something similar. You have also answered something else that has been puzzling me - how the primary covered is fixed is also shown in your photo.
Thanks again, Mark


Nice to see another 250 owner, I made one for mine out of some steel square section and some copper pipe.


Hi I have a spare 250 breather if you still require one.


Thanks but I managed to make one that does the job, I would be interested if you have any other 250 parts.


I also have a 250 which I'm trying to source enough parts to build a spare engine. Finding a good crank is hard work.

Image converted to linked file - Dave,26Nov2021


So remind us, why would you need a 'spare' engine.
That one looks superb enough as is ?

I always think that when you find every example is completely knackered,
they obviously had good use out of it  !


It's always nice to have a spare unit as it will be covering a fair few miles. They are not the best unit and are very prone to sieving up due to the thickness of the cylinders . I've looked at making it a larger capacity but it not that easy.