Duplex Vacuum, (Heinrici type stirling)

[Deanofid]

Thanks again for the comments, guys. Glad some of you found the fan 'lift off' as funny
as I did.

I got that fixed, and fired it up for another go. Ran out of batteries after about 15 seconds
and the camera shut down. It's long enough to see that it works well, though. Actually, it
blows more air than I thought it would, and was puffing the flame on the burner around quite
noticeably. Usually, the flame is pure blue, but the extra air going into the hole in the firebox
was turning it yellow.

You can see my hand trying to reach into one of the bottom arches to reach the air mixture
on the burner, but couldn't quite see to get it and run the camera at the same time.

Short 'n sweet, here's another one:



For those who missed it, there's another new video in the previous page!





[ame]http://www.youtube.com/watch?v=B1m1h506Dv0[/ame]



Dean

 

[Blogwitch]

What a great runner Dean, and a great build as well. :bow: :bow: :bow:

As with all things we experiment with, it is far better to have the fan fall off, rather than have the s**t hit it.


John

 

[b.lindsey]

Thanks for the vids Dean....both of them. So can you tell yet how much improvement you get in run time with the fan vs. no fan? Im sorry to see this one come to an end but will be looking forward to the next build. Just a super job all the way around!!

Bill

 

[zeeprogrammer]

Beautiful engine Dean.
Great thread too. Very enjoyable, fun, and educational.

Thanks!

 

[SAM in LA]

Dean,

I knew you would figure it out.

What a nice running engine and its easy on the eyes too.

Regards,

SAM

 

[4156df]

Dean,

Beautiful engine and a sweet runner. Well done.

The fan coming off during the video is part of a common natural phenomenon known as the "Demo Effect".

Dennis

 

[walnotr]

Dean, your fan flying off reminded me of a short video I did while working on a tool changer for my mill. I couldn't help adding sound effects.

[youtube=425,350]http://www.youtube.com/watch?v=K6lsIhTQAc8[/youtube]
[ame=http://www.youtube.com/watch?v=K6lsIhTQAc8]http://www.youtube.com/watch?v=K6lsIhTQAc8[/ame]

Let's see if I did the link the right way.

Steve C.

 

[Twmaster]

Hope that didn't leave a mark!

 

[Deanofid]

John, Bill, Zee, Sam, Dennis, Steve, Mike, thanks again for checking it out!

Bill, I don't know how much longer it will run. Before the fan, after about three minutes it started slowing
down. Last time, with the fan, it went six minutes on a timer when I just decided it was good, and
shut off the burner. That's probably long enough between oiling the crank bearing.

The fan coming off during the video is part of a common natural phenomenon known as the "Demo Effect".

Dennis

Now, that's a good one, Dennis. I wonder if it means "Demo-nstration" or "Demo-lition" ? ;D

Steve, now that's machinist comedy! I think you need to show us more of that when it's
not flinging parts!


Dean

 

[walnotr]

One of these days I'll get back to the tool changer. Once I quit making Whittle scrap. Too many boo-boos today and lots of bad parts came off the mill. :wall:

 

[kustomkb]

Congratulations Dean.

A great runner/looker for sure.

Great thread too,

Thanks.

 

[joe d]

Dean

This finished up nicely. By the fact that you are posting here, I can assume that you have recovered from working with that woodstuff? Enjoyed following along, as has become the standard with your threads. Sooooo what's next?

Cheers, Joe

 

[Deanofid]

Well Steve, when the Whittle lets you rest a bit, the tool changer would be a neat thread.

Kevin (KB) and Joe, thanks!

Sooooo what's next?

Cheers, Joe

Oh, I just don't know. Almost surely tooling projects, and may even spend some time
earning some dough! What a novel thought!

Dean

 

[SBWHART]

Great looking engine Dean and a great build thanks for taking us along

Stew

 

[NickG]

Brilliant Dean, anyone would be proud of that achievement. Do you think the fan actually provides some cooling and prolongs running then?

Nick