classic motorcycle forum

Hello can someone tell me where this one was used?
And what is roughly the value of such a complete gearbox?
I am located in the Netherlands so if someone is interested….

Does anybody know where this gearbox (2 gears?) was used?

As it is not equipped with a kickstarter it might be a stationary engine.

Thanks!

Thanks!

Is there any overview of the dimensions of the centre piece and needle?

I noticed that from the top at 60% of the total length of the centre piece the internal diameter is less than above and below for roughly 5mm length.
So the internal hole of the centre piece becomes narrower slightly below the middle of the total length for only 5mm. After that the diameter looks the same as from the top.

Is this correct?

I also saw this at centre piece 3.

All thanks!

Indeed the bush on the right side is worn.

Any option to buy new ones to be fitted on the polished main shaft?
Or just have a copy made?

Need help!
My Villiers XIIC 148cc long stroke engine has been running briefly and then it has no stroke. I have already done all sorts of things; replaced gaskets, new spark plug, reset timing, had cylinder loose, disassembled carb etc.
What is striking is that even after many start requests, the spark plug is not wet. Carb is a 1 1/8" Villiers with needle adjustment, needle 4.5 and nozzle 2, so should get quite a bit of petrol.

But what am I overlooking? Is it sucking in false air through the bronze bushings on the crankshaft?

Any tips welcome as I don't know any more.

Thanks again!

Sorry I misunderstood the preference of an alloy piston compared to a cast iron.

What is in your view the biggest advantage of having an alloy?

Indeed I also have cast iron ones found only so far.

Thanks all!

I already noticed these paired numbers.

Unfortunately there isn’t