Worth a look

[silverfoxcc]

Now .just think how nice all your static models are, and then watch this and dream!!!
Whilst it is running on air, all it needs is a chap with a small enough carb and bobs your uncle.
The man is nearly at genius level, although if you have ever seen Como by Dr Bradbury Winter and consider that was built in the 1890's then you have to give the old doc the edge.
But it is worth spending a few minutes just marvelling at what this guy has done.

Me ,well when the inside connecting rod id fettled down there will be a pic of 'work in progress' along with the inside crank axle


http://handmade.hackaday.com/1200-hours-of-work-re...

[dr_gn]

silverfoxcc said:

Whilst it is running on air, all it needs is a chap with a small enough carb and bobs your uncle.

I don't think it works like that - it's running on compressed air, it's not a combustion engine. It doesn't have an ignition system for starters...

[silverfoxcc]

I realise it was running on air, but ignition systems that small have been done in the past

[dr_gn]

silverfoxcc said:

I realise it was running on air, but ignition systems that small have been done in the past

So have carburettors, but you'd still need both, plus completely different valve timing. Like this one in fact:

http://www.youtube.com/watch?v=mutb7KgA9NM

The one in your O/P is more like an external combustion (eg steam) engine than an i.c. engine. Still a beautiful bit of model engineering though.

[moreflaps]

dr_gn said:

silverfoxcc said:

Whilst it is running on air, all it needs is a chap with a small enough carb and bobs your uncle.

I don't think it works like that - it's running on compressed air, it's not a combustion engine. It doesn't have an ignition system for starters...

There is no guarantee that it would run as an ic engine. Piston tolerances etc. don't matter when running on air -because there is no efficiency requirement (friction losses don't matter etc),

Cheers

[dr_gn]

moreflaps said:

dr_gn said:

silverfoxcc said:

Whilst it is running on air, all it needs is a chap with a small enough carb and bobs your uncle.

I don't think it works like that - it's running on compressed air, it's not a combustion engine. It doesn't have an ignition system for starters...

There is no guarantee that it would run as an ic engine. Piston tolerances etc. don't matter when running on air -because there is no efficiency requirement (friction losses don't matter etc),

Cheers

Expansion issues too.