Thread: SloMo Wobbler

Not really but whatever rocks your boat.

What does it do? Why?

Hi Dave'H
Well I like it.
One of these days when I can see some floor in my shed I'm going to make me one.
Whens it going to run on steam?

Stuart

It really doesn't do any thing, except go around and the clyinder rocks.

Just some thing I made thats all, normally they run quite fast so it is hard to see what is happening. So I thought I would show it in slow motion.


Dave'H

Nice bit of work there Dave, she seems to run very smoothly.
Is the flywheel fabricated or fully machined?
Cheers,
Greg.

Originally Posted by Dave'H

I think you are right, wasn't worth posting.

It really doesn't do any thing, except go around and the clyinder rocks.

Just some thing I made thats all, normally they run quite fast so it is hard to see what is happening. So I thought I would show it in slow motion.


Dave'H

Well I think it was worth posting, As it shows all of us your machining skills.
Good work there mate..

Wow, tough crowd today, you make something in your shop and post it up, only to be knocked down when you post it.

I think you did a good job on that Dave, I like it. I would be interested to know a bit more about it as well, and as Greg said is the flywheel cast or from solid?
Engines are something I want to get into in a few years time, they wont do anything but will look good on the mantle piece, but you get the enjoyment from building it.

Dave

Originally Posted by kwijibo99

Nice bit of work there Dave, she seems to run very smoothly.
Is the flywheel fabricated or fully machined?
Cheers,
Greg.

Thank you Greg, fully machined on a small Sherline mill. Made from a 30mm dia piece of brass.

Dave'H

Nice work
I love gizmo's that don't really have any function but to exist.
Love that flywheel

Ewan

Yeh nice bit of work, something about motion that facinates me, when I was a mere youngun I had a small steam powered stationary engine, used to watch it for hours,
What is actually powering it?


Pete

Thank you Pete, Ewan, Dave, Matt, Stuart, for you nice words

Running on air about 1.8 psi - any lower it doesn't run.


Dave'H

Outstanding Dave
There is a serious amount of satisfaction in getting inert lumps of metal and machining them to exacting sizes, fitting them all together and making an operating machine.
Well done

Phil

Having another look at this and I reckon there's more going on than we can see, some sort of valving/porting to get the air in then the same to get the exhaust air out, plus a rotary seal of some sort between cylinder and housing plus sealing on the cylinder rod or a very close fine finish, however it's done it's a good job, perhaps Dave might expand a bit more on the inner workings


Pete

Originally Posted by Dave J

Wow, tough crowd today, you make something in your shop and post it up, only to be knocked down when you post it.

I think you did a good job on that Dave, I like it. I would be interested to know a bit more about it as well, and as Greg said is the flywheel cast or from solid?
Engines are something I want to get into in a few years time, they wont do anything but will look good on the mantle piece, but you get the enjoyment from building it.

Dave

Amen to that. I'm personally not much into modelling, too busy making life sized parts. Having said that I have 3 low temperature Stirling engines about half finished I hope to one day get complete and give them away to friends. One thing I will say to those who seem to do nothing but come up on this forum and look down their noses at other members, is that there is a remarkable amount of machining in these little engines. Things like accurately laying out the flywheel spokes and then machining them isn't as easy as it looks until it it's time to do it. In my case I also have some flat plate that I'm still somewhat scratching my head as to how I'm going to secure it for the machining operations needed.

Good on you Dave (H) for putting this up and Dave (J) if you do decide to do some engines yourself, these are the ones I'm doing. I may reserve my recommendation for when they're actually running though Jan is a really nice guy though and if you email him he'll send any plans. The low temperature versions are especially intolerant of any friction, so any machining needs to be spot on.

hand_stirling

[ame=http://www.youtube.com/watch?v=R_dHhGOXkKo]Low Temperature Stirlings - YouTube[/ame]

Pete