9 replies to this topic

[winchman]

Hello

We are struggling to identify this gear box, we think its from a pre war vehicle, it came with a 1905 Unic engine but isn't the correct box for the engine.

Its 3 speed and reverse

[Ray Bell]

What sort of threads are used?

 

That might give a clue...

[winchman]

What sort of threads are used?

 

That might give a clue...

Thanks never thought of that!

It was one of the things that helped identify the engine

[winchman]

Well just checked and its metric.

[Porsche718]

The photo you have shown us is probably the output side, can we have shot of the input end?

[winchman]

More photos

Edited by winchman, 14 January 2023 - 07:13.

[Porsche718]

I think the original photo is the input end. Belt driven from a stationary engine.

 

What you may have there is a variable speed power take-off.

 

Whatever it is from, the gearbox is mounted direct to a chassis of frame, remote from the power source.

 

But I could be wrong on all counts.

[winchman]

Some early cars had a transmission brake so we thought that was the purpose of the big cast flywheel?

It has 3 speeds and reverse, it also has what looks like a take off for a speedo, this is why we assumed its for a car?

[winchman]

This sort of lay out

[Charlieman]

I'm confused too.

 

The big flywheel, perhaps a pulley wheel, would make an easy way to start a single cylinder engine.

 

The remote gear selector looks way past 1914.

 

What is the pitch of the flat plates which would mount the transmission?