I have watched quite a few of his videos in the last few weeks. To watch him get a hacksaw out and cut a big 3 cyl 750cc engine into three pieces and then weld another cut engine up to give IIRC 5 cylinders is just amazing. He then builds a crank from scratch. Doesn't really appear to use drawings he just knows what he needs to do.

One of his engines used a pair of cylinders from a Pratt and Whitney radial engine and he ended up with a 5 litre V twin. All made to look old.

Colin

The piston/turbine compound was the Nomad, the Dagger and Sabre were the H24s.

Some great info on these and many others here:

https://oldmachinepress.com

The Sabre was a beast. This is from Wiki;

"Development continued and the later Sabre VII delivered 3,500 hp (2,600 kW) with a new supercharger. The final test engines delivered 5,500 hp"

This was from a 37 litre engine. To get that power ratio with aircraft reliability? Then along came the jet….

allan millyards bikes look fantastic but i wonder how they handle on the twisty roads?

They do seem to. I particularly admire the fact that he creates useable vehicles rather than 'engineering sculptures' what would fall to pieces if started.

Here's his little 4 cylinder 350 being revved to 7k RPM and hustled around some bends (towards the end of the video)

Here he's riding his V10 Dodge Viper engined bike (In part 2). He reckons to have put over 9000 miles on it since it was built.

Part 1:

Part 2:

I find it frankly astonishing that anything so monstrous could be engineered to be usable.

The fact that he's prepared to rest his nuts on it and open the throttle to hit 200mph also speaks of man who is confident in his engineering ability.

He also claims to have over 9k miles on the Pratt & Whitney 5 litre V twin

Part 1:

Part 2:

Edited By Andy Gray 3 on 25/11/2020 17:23:41

5 comments from a non engineer

The fork head races look tiny.

He uses 1/4 throttle to reach 189mph.

It's begging for wheelie bars and a trip down the salt.

The P&W twin pinks on his advance setting, naughty boy.

All that said they run, you can ride them, well he can, very carefully .

Funnily enough, this just popped up elsewhere:

(I'm a fan, in case you hadn't realised! )