The Unofficial Mamod and Other Steam Forum

Cam · Posted: Tue Apr 22, 2008 9:00 am Post subject: My newly restored MM1

my 1st restoration!!!

IT DOESNT WORK!!!

but i think the connection between the cylinder block and the steam pipe isn't flush...

when i bought it it was almost solidly black everywhere, with little paint where there should be...Thankfully the original mamod decals were still there however blackened they may be..

these are just after i tried to run it

Wallace · Posted: Tue Apr 22, 2008 9:58 am Post subject:

Nice engine Cam.

Is the engine showing any signs of running under steam.

The steam pipe could be blocked, or a more common problem is overfilling the boiler with water.
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Cam · Posted: Tue Apr 22, 2008 10:05 am Post subject:

hmmm maybe blocked pipe but if i push the piston away from it plenty of steam is released....maybe i should get out the old oilstone and make sure there is a flat surface

Wallace · Posted: Tue Apr 22, 2008 10:16 am Post subject:

I'll leave explaining lapping the surfaces up to those who have done it before, but I think fine emery paper and a flat surface is needed.

A oil stone could be too harsh.

Doesn't sound like a blocked pipe.

If everything is moving freely, then can't see why it shouldn't run.

Only fill the boiler to about 2/3 to 3/4 full (just keep an eye on things boiler doesn't run dry).

Good luck with it

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Cam · Posted: Tue Apr 22, 2008 10:19 am Post subject:

thanks for that, i'll try it out tomorrow and report back

cam

tmuir · Posted: Tue Apr 22, 2008 11:50 am Post subject:

If steam is coming out when you push the cylinder away but the engine won't run check the hole into the clyinder isn't gummed up with old oil and that the piston isn't binding in the cylinder.
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oldstuff · Posted: Tue Apr 22, 2008 3:07 pm Post subject:

Also, try adjusting tension on the spring...sometimes its something simple like this.
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Atticman · Posted: Tue Apr 22, 2008 3:59 pm Post subject:

I assume youve oiled the piston as well that often is the cause of non runners sometimes ones Ive bought have rusted up pistons

johnreid · Posted: Tue Apr 22, 2008 4:08 pm Post subject:

I love those that have Mamod cast into the Crank Eccentrics, one feature that makes yours stand out.
I am sure that you will get it sorted out, I had one that needed to be flattened on the Cylinder block, I blackened it with a Sharpie and then laid a piece of 800 grit Wet and Dry on a piece of plate glass and worked it in a figure 8 on the W&D, I then looked at the cylinder block and noted how much of the Sharpie markings were removed and could tell that it was flat.
Make sense? Remember it might not have to be perfect, and a little does a lot so keep trying it as you work, no use sanding it beyond what is absolutely necessary.
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IndianaRog · Posted: Tue Apr 22, 2008 4:10 pm Post subject:

In your third picture it looks like the cylinder is separating from the block of brass it is supposed to be soldered to. If this is the case, your steam could be escaping thru that seam and not getting to the piston.
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Cam · Posted: Wed Apr 23, 2008 4:47 am Post subject:

yeah, i'll W&D it, if it doesnt work i'll re-solder it...thanks guys

cam

toxx · Posted: Mon Apr 28, 2008 12:15 pm Post subject:

Minor1PJG · Posted: Mon Apr 28, 2008 12:52 pm Post subject:

I did also think that your spring looks very compressed and may be too tight. If you just put a light oil in the cylinder and on the port faces can you spin the engine by hand (without it being under steam)? If so it's probably not too tight

Good luck with this. I notice on yours the steam pipe goes to the top hole on the engine frame therefore it will run 'backwards'.

I hope you get it running soon. I'm a big fan of the little MM1

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Cam · Posted: Mon May 12, 2008 9:22 am Post subject:

Sorry i havent replied (to anything for that matter)

the engine works and works well....but since that run the Flywheel's thread has disintegrated so the screw no longer hold it onto the shaft....thus the engine will no longer run

any ideas anyone>?

Minor1PJG · Posted: Mon May 12, 2008 9:58 am Post subject:

Maybe try gluing the flywheel into the crank shaft.

Most of the MM1's I have seen have the flywheel attached with glue as standard from the factory. It tends to be only the larger engines that have the flywheel attached with a grub screw.

Good luck

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