The Unofficial Mamod and Other Steam Forum

metalhead100

Compare this to the first post where the meths burner wanted to jump out of the firebox in the post linked here to the first video.

http://modelsteam.myfreeforum.org/about22887.html

I made bushings out of brass hose barbs (2 required ..I cut them off in the middle and retained the flange )

I shimmed the trunnion bolt with .005 Teflon wrapped around it to cover the shoulder it rides in...

I shimmed the crankpin with the same...

And I balanced the flywheel on my propeller balancer........

She runs allot smoother now ....got rid of the gravel crusher sound it had....video shot with same camera phone so compare the volume.

http://www.youtube.com/watch?v=JtdF6KKBC5I

I enjoy tweeking these engines and smoothing them out....

Jim
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redryder · Posted: Sat Oct 24, 2009 1:20 am Post subject:

That came out great.
The difference is huge.

Great work Jim !!!!

Gil
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Steam on,
redryder

johnreid · Posted: Sat Oct 24, 2009 1:23 am Post subject:

Another sooper smooth Metalhead engine.
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Non Impedite Raditioni Cogitationis

27ace27 · Posted: Sat Oct 24, 2009 1:29 am Post subject:

at first I wondered if it was even running! you could run that in the middle of the night right next to the person sleeping and not wake them! AMAZING!

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Ahhhhhh... The smell of esbit in the morning!

Insert Bowman here.......

Junkers; someone has to love them!

johnreid · Posted: Sat Oct 24, 2009 1:30 am Post subject:

You should hear or should I say not hear his D20
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Non Impedite Raditioni Cogitationis

metalhead100 · Posted: Sat Oct 24, 2009 1:47 am Post subject:

John the second D-20 (your old one) is a kitten now.....She runs so well.

Jim
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Les · Posted: Sat Oct 24, 2009 7:37 am Post subject:

That is so quiet and it doesn't want to dance anymore.

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Les - Nolo Servile Capistrum

www.freewebs.com/lesmarsh

Steve_S · Posted: Sat Oct 24, 2009 8:59 am Post subject:

What a difference that makes!

Sandman · Posted: Sat Oct 24, 2009 9:36 am Post subject:

Jeez. You'd swear that was two different engines.

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ozsteamdemon · Posted: Sat Oct 24, 2009 9:53 am Post subject:

Great work there Jim .

With the reduction of noise , efficiency and output must be up , too .

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IndianaRog · Posted: Sat Oct 24, 2009 11:36 am Post subject:

Jim, you ought to think about offering a "rehab shop service"...folks could send you their noisy, rattling engines and you could turn them into precision machines.

The difference is amazing !!!

Rog
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Stilldrillin · Posted: Sat Oct 24, 2009 12:52 pm Post subject:

Well done Jim!

Makes a big difference. Satisfying too!

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David...... Widgets R us.

metalhead100 · Posted: Sat Oct 24, 2009 12:59 pm Post subject:

I would be glad to re-furb anyone's gravel grinder!...

Just send a PM....?

jim
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Les · Posted: Sat Oct 24, 2009 7:28 pm Post subject:

Wallace · Posted: Mon Oct 26, 2009 5:58 am Post subject:

That's really neat

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