Bob Reeve's Differential Demonstrator

A short video of Bob Reeve's differential demonstrator using shop-made bevel gears as described in his recent articles in Model Engineers' Workshop.

Just beautiful !.

Nice job.

Very nice.

But I didn't get the point being demonstrated by engagement of the wooden wheels. I hope it's not obvious to everyone bar me !

The wooden wheel device was invented by Dennis Motors as a very cheap way of locking the diff so both wheels were constantly driven.

Going by the perceived passage of the bars drawn on the wooden wheels, I guess that's intended to demonstrate the diff's capability to cope with the tyred wheels running at different speeds - though I didn't readily see how that was achieved...

Ah, it must be the little cuboidal gearbox between the wooden wheels !

Edited By Mick B1 on 06/12/2022 21:14:32

So was this wooden wheel device ever fitted to a vehicle? (or anything else?)

Might be very cheap but does not look to be very practical on a road vehicle

I'm assuming you meant the Dennis motor company

Ian P

.

… Dennis Specialist Vehicles: **LINK**

https://en.wikipedia.org/wiki/Dennis_Specialist_Vehicles

… and I am assuming that the wooden wheel arrangement is simply a ‘Rolling Road’ for the purposes of demonstration.

MichaelG.

Edited By Michael Gilligan on 07/12/2022 05:36:13

The wooden wheels are geared (with conventional spur gears) to move at a 2:1 speed ratio to simulate driving in a tight circle.

Neil