Author Topic: Places not to put your "Miser" engine  (Read 3249 times)

Offline Mainer

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Places not to put your "Miser" engine
« on: November 08, 2012, 01:29:46 AM »
Do not put your "Miser" engine on a woodstove. Although it will run flat out in grand fashion for a while, the foam displacer piston may melt:

Offline black85vette

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Re: Places not to put your "Miser" engine
« Reply #1 on: November 08, 2012, 02:35:17 AM »
Arrrrrrrrrgh!    :wallbang:     Sad to hear about that.

Offline Jo

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Re: Places not to put your "Miser" engine
« Reply #2 on: November 08, 2012, 07:11:10 AM »
Oh dear :facepalm:, Am I correct in thinking the miser is was a low temperature differential engine?

Jo
Usus est optimum magister

Offline tel

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Re: Places not to put your "Miser" engine
« Reply #3 on: November 08, 2012, 08:12:41 AM »
BUGGER!  :hammerbash:
The older I get, the better I was.
Lacerta es reptiles quisnam mos non exsisto accuso nusquam

Online steamer

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Re: Places not to put your "Miser" engine
« Reply #4 on: November 08, 2012, 10:06:21 AM »
Bugger is right!   I would appear the displacer piston is now a mere carbon footprint!.. :( :(

Sorry to see that bud!

Dave
"Mister M'Andrew, don't you think steam spoils romance at sea?"
Damned ijjit!

Offline b.lindsey

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Re: Places not to put your "Miser" engine
« Reply #5 on: November 08, 2012, 11:22:02 AM »
Oh man...sad to see...but as long as the acrylic displacer cylinder is ok, it should be repairable with some new foam. Had a similar incident with Jerry Howell's mini stirling fan last week which required making a new displacer stem and crank rod and the pesky little clevis joint connecting them...so I feel your pain. It was time for some maintenance anyway  :embarassed:

Bill

Offline rleete

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Re: Places not to put your "Miser" engine
« Reply #6 on: November 08, 2012, 02:18:50 PM »
Make a new displacer out of balsa wood.  Nearly the same weight, no melting.

Offline NickG

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Re: Places not to put your "Miser" engine
« Reply #7 on: November 08, 2012, 09:01:38 PM »
Oh dear :facepalm:, Am I correct in thinking the miser is was a low temperature differential engine?

Jo

Yep - is a complicated finger engine now

Offline Don1966

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Re: Places not to put your "Miser" engine
« Reply #8 on: November 08, 2012, 11:24:10 PM »
I did the same thing a few years ago. I had purchased a differential engine and it was suppose to run on 20 degree temperature different. Well it didn't so I place it on the stove to get more heat, bad mistake I hadn't realized the displaced was foam and melted. I had purchased it from scisupply.com and called and the owner sent me another. When I matched the two together they were different. The one that was on my engine had a slot Across one side of it, where the new one had a second layer to cover the slot. Yea, no wonder it wouldn't run.now it run with a cold PAC.

Don