Author Topic: Elmer's horizontal mill engine. (Read 52369 times)

modeldozer · « **on:** December 21, 2014, 02:55:12 PM »

For my first try at building a steam engine I have opted for Elmer’s no33 horizontal mill engine. To make it easier to do I have doubled the scale and adapted it to metric.

Shaft part of the crankshaft.

The crank pin

Setting up a piece of material for the crank web.

Drilled and turned the boss end.

Then turned around, and turned the outside and faced off.

The milling work has to wait until my mill is fixed.

Next were the eccentric, first faced and drilled and then offset to turn the journal.

More to follow.

Cheers
Abraham

vtsteam · « **Reply #1 on:** December 21, 2014, 03:04:26 PM »

Great, Abraham, looking forward to this!

krv3000 · « **Reply #2 on:** December 21, 2014, 04:44:50 PM »

brill keep it up

mexican jon · « **Reply #3 on:** December 21, 2014, 10:08:32 PM »

Looking forward to following this 1

modeldozer · « **Reply #4 on:** December 22, 2014, 06:00:01 PM »

Thanks to all for following.

The piece of stainless steel that I wanted to use for the valve pushrod had a slight bend in it so I had to do a makeshift drive arrangement to turn it between centers.

Once true it was chucked in a collet chuck for a bit more rigidity while turning.

Ready for milling.

Next was the connecting rod, here turning the radii with a form tool.

Turning done.

That’s all for now.

Cheers
Abraham

vtsteam · « **Reply #5 on:** December 22, 2014, 06:03:11 PM »

Looking good!

SwarfnStuff · « **Reply #6 on:** December 23, 2014, 01:16:45 AM »

Well this is another project I will keep tabs on and keep my mind off my non working lathe. (Blown diode in the controller, waiting for replacement parts and hopefully it will be a simple repair.

) Great work so far.

modeldozer · « **Reply #7 on:** December 23, 2014, 08:39:57 AM »

Thanks guys, Might slow down a bit as i am still waiting for my mill's bed from the machine shop.

Cheers
Abraham

modeldozer · « **Reply #8 on:** December 24, 2014, 08:39:15 AM »

Next up were the 4 spacers for the crosshead. Turned the outsides, drilled and cut off 4x.

Then set up a backstop.

And clean them up to the same length.

Then it was time for a cleanup as next I will be turning brass.

Turned the two main bearings.

More to follow.

Cheers
Abraham

modeldozer · « **Reply #9 on:** December 26, 2014, 05:00:40 PM »

Hi all,

The packing nuts were machined from hex stock.

The cutoff ends were faced and the holes reamed to final size.

Finished.

A piece of flat bar was centered to a punch mark.

A hole was drilled.

And bored.

The piece was then reset.

And faced, then flipped over and faced on the other side.

Ready for some milling work to turn it into the eccentric strap.

Until next time.

Cheers
Abraham

Stilldrillin · « **Reply #10 on:** December 27, 2014, 04:28:40 AM »

Well done, and nicely shown, Abraham!

It's nice to see you're back with us, again.....

David D

modeldozer · « **Reply #11 on:** December 27, 2014, 09:43:49 AM »

Hi David,

Thank you for the encouragement. Am glad to be able to carry on with the hobby for a while longer.

Abraham

vtsteam · « **Reply #12 on:** December 27, 2014, 12:55:55 PM »

CrazyModder · « **Reply #13 on:** December 27, 2014, 04:27:36 PM »

Well done. Might I ask which lathe that is?

Meldonmech · « **Reply #14 on:** December 28, 2014, 03:34:58 AM »

Abraham
A very well presented project, looking forward to more.

Well done
Cheers David

modeldozer · « **Reply #15 on:** December 28, 2014, 05:26:19 AM »

Hi to all,

Thanks for looking and encouraging.

Crazymodder,

It is a highly moddified Realbull 7x14 sold here under the Einhell brand.

Cheers
Abraham

modeldozer · « **Reply #16 on:** December 29, 2014, 06:58:13 PM »

Hello to all,

Hope everybody had a nice Christmas and Santa was very generous.

Next up was the valve chest and, as the mill is still out of commission, a piece of brass was fly cut to size.

It was then centered lengthwise,

and the boss for the packing seal turned.

It was drilled and taped.

For the deep hole I had to make a long drill by soldering a drill bit into a length of bar.

Test fitting the packing nut and valve pushrod.

The part was then turned around and the boss on the blind side turned,

and parted off.

The round over was done by file.

The piston pushrod was cut to length and threaded.

Tuning the pin for the valve pushrod.

Cheers
Abraham

modeldozer · « **Reply #17 on:** December 30, 2014, 06:58:46 PM »

Hi all,

Next a slice of cast iron was marked and cut.

A layout was stuck to the slice and some further cuts made. The off cuts will be used later.

The main piece was centered in the 4-jaw chuck,

the outside turned to size and the gland boss turned.

Ready for drilling.

The left over piece had to be turned over and machined from the other end to make the blind head.

Being cut off.

To hold the blind head for facing the outside an ER40 chuck was used. A slug of 25mm bar was placed in the back of the collet so it could close.

The finished pair.

That’s all for now.

Cheers
Abraham

krv3000 · « **Reply #18 on:** December 30, 2014, 07:13:14 PM »

thats rely shaping up nice

Stilldrillin · « **Reply #19 on:** December 31, 2014, 04:04:19 AM »

Coming along nicely!

The saw marks on the c/i, took me back to aching young muscles, in the apprentice school..... 1960.

It's going to be larger than I first thought......

Nice work Abraham!

David D

modeldozer · « **Reply #20 on:** December 31, 2014, 08:26:29 AM »

Hi KRV and David
Thank you for the encouragement.

Unfortunately the only means for cutting things in my shed is elbow work and a hack saw.

Cheers
Abraham

modeldozer · « **Reply #21 on:** December 31, 2014, 08:55:51 AM »

Hi all,

A question for the collective, with a CI cylinder what material would be the best fo the piston, CI, brass or mild steel?

Abraham

vtsteam · « **Reply #22 on:** December 31, 2014, 09:12:18 AM »

I'd vote for CI.

Graphite containing, same rate of expansion as cylinder, less tendency to rust (with steam oil coating) than steel (for steam), no tendency to electrolytic action with cylinder. (as brass would, if damp).

DavidA · « **Reply #23 on:** December 31, 2014, 11:06:03 AM »

Abraham,

An interesting collection of tool holders you have hanging on the wall.

Dave.

modeldozer · « **Reply #24 on:** December 31, 2014, 02:19:01 PM »

vtsteam,
Thank's for the quick response, will make it from the same as the cylinder.

Dave,
all based on Ralph Patterson's designs.

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Author Topic: Elmer's horizontal mill engine. (Read 52369 times)