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Author Topic: HELP! Is My HOG Bent?  (Read 797 times)

Nick

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HELP! Is My HOG Bent?
« on: March 18, 2020, 10:32:02 am »
I am 99% sure this is bent, but I would sure hate to tweak it back into place if for some strange reason it is supposed to be the way... I have looked on Google images at others, but none of the pictures are at the right angle...

Also, this was a recent ebay purchase, at roughly half the cost of new ($100, $11.75 shipping) . It was sold with the description:

Quote
HOG Motor Stirling Steam Motor, produced in Germany, made in attractive pewter. I bought in the early 2000's. Excellent condition, hardly ever used. (Sold As Is), No paperwork. Thank you for looking.

What would you do in this case?? Bend it back and live with it? Ask the seller about the bend in the frame? They state "Excellent collection" (I knew there were minor finish blemishes) but also stated "Sold As Is"... The box was in perfect condition, so it was not damaged in shipping...

It seems to run perfect with the bend, I didn't see it till after I already had it running.

I have taken 4 pictures at slightly different angles/lighting, but it's kind of hard to capture the slight angle down to the right of the pedestal...









Nick

Steamloco

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Re: HELP! Is My HOG Bent?
« Reply #1 on: March 18, 2020, 10:46:35 am »
Looks bent to me. I don't have a HOG engine, but the stirling beam I have is straight across at the base.
Can't image it was made that way. Since it runs fine, it's up to you if you want to bend it straight.
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Hero

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Re: HELP! Is My HOG Bent?
« Reply #2 on: March 18, 2020, 11:35:15 am »
Somehow it seems that the net effect would be to alter the stroke just a tad, but if it ain't broke....
Bob

Nick

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Re: HELP! Is My HOG Bent?
« Reply #3 on: March 18, 2020, 12:24:25 pm »
Somehow it seems that the net effect would be to alter the stroke just a tad, but if it ain't broke....

But it's staring at me and in my head I hear "fix me! fix me!"  :D :D
Nick

Inge

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Re: HELP! Is My HOG Bent?
« Reply #4 on: March 18, 2020, 02:37:38 pm »
Hard to tell if the flywheel center is exactly on the center of the piston bore, but that's where I would put it (or leave it), just for the purposes of maintaining geometric concentricity with all of the moving parts involved, whether elliptical, linear or rotational, thus reducing inertial imbalance which could result in vibrations which could become resonant if the rotational frequency should approach the natural deflection frequency of the support beam.  Also, keep the stationary parts out of the way of the moving parts.

Ironhorse57

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Re: HELP! Is My HOG Bent?
« Reply #5 on: March 18, 2020, 02:38:09 pm »
Mine is straight - I too would be very tempted to fix it...

Dave
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txlabman

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Re: HELP! Is My HOG Bent?
« Reply #6 on: March 18, 2020, 04:53:02 pm »
Mine is straight.

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txlabman

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Re: HELP! Is My HOG Bent?
« Reply #7 on: March 18, 2020, 04:54:31 pm »
Maybe your Hog has Peyronie’s Disease? 🤠

Steam Technology

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Re: HELP! Is My HOG Bent?
« Reply #8 on: March 18, 2020, 05:05:28 pm »
G'day Nick
If it was mine I would firstly loosen the flywheel pedestal then pack the outer edge to bring the pedestal straight up.
Check if it all lines up and runs correctly, then you know it is safe to straighten.
Cheers. Dave.
Cheers. Dave.

Woe is me

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Re: HELP! Is My HOG Bent?
« Reply #9 on: March 18, 2020, 09:43:34 pm »
I'm like you, I know it's bent, it's not supposed to be bent, damn it's bent. I'd take it apart, flip it, turn it by hand to make sure there's no binding, run it if it will. If it runs take it apart, straighten it and put it back the way it's supposed to be, done. But that's just me.
To steam or not to steam, that is the questi,,,,,,Ah shut up and "Steam it, like you mean it."        Tommy.

Dr.Rev.DelmarMacReady

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Re: HELP! Is My HOG Bent?
« Reply #10 on: March 18, 2020, 10:00:02 pm »
Maybe your Hog has Peyronie’s Disease? 🤠
Dang near laughed loud enough to wake Marcy. Good one, Charlie
Bennydaheeb

parallelmotion

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Re: HELP! Is My HOG Bent?
« Reply #11 on: March 19, 2020, 05:59:07 pm »
Would definitely straighten if it were mine. Assuming it's easily dismantled, clamping that piece in a vice should do it, being careful to clamp between a couple aluminum or copper strips so as not to mar the finish. If that doesn't work try a few gentle taps with a rawhide or rubber mallet.

Woe is me

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Re: HELP! Is My HOG Bent?
« Reply #12 on: March 24, 2020, 12:19:26 am »
Maybe your Hog has Peyronie’s Disease? 🤠


About 30 years ago I knew these twin sisters. Let me tell you, they could straighten a dead mans hog, if you know what I mean.
To steam or not to steam, that is the questi,,,,,,Ah shut up and "Steam it, like you mean it."        Tommy.

Belugawhaleman

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Re: HELP! Is My HOG Bent?
« Reply #13 on: March 26, 2020, 09:49:40 pm »
Have you managed to straighten your engine yet?

PAUL
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