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Sterling Diaphragm Engine

Posted: Fri Nov 11, 2016 12:18 am
by Trevor
Hi all - I am nearing the end of completing my diaphragm Sterling engine. I have seemed to have worked out the throw for the diaphragm and wondering if anyone else has tried this idea on the forum. I have looked at a couple of videos of Approtechi Utube ones and they seem pretty impressive.
I have finished making or I should say converting a kerosene burner into a methylated spirit one and it works fine.

Can any one help me on how to add pictures and or attachments to the forum, because when I try they don't seem to download and just leaves a [img] and nothing else.

Trevor

Re: Sterling Diaphragm Engine

Posted: Fri Nov 11, 2016 3:04 am
by Ian S C
Thank goodness Trevor, I thought it was just me, I'v been having the same trouble.
Ian S C

Re: Sterling Diaphragm Engine

Posted: Fri Nov 11, 2016 4:45 am
by Trevor
Whoops! looks like there will be no photos or attachments then.
I am into making the crankshaft now as all the rest is basically done. Painted even.
The crank is going to be difficult as I it is a beta Sterling and I am thinking of using a bell crank. Can't find an actual formula for it so I am going to make a cardboard mockup and get it right that way, and guess what Ian - going to use a stainless steel drink bottle heehee.
Trev

Re: Sterling Diaphragm Engine

Posted: Fri Nov 11, 2016 9:25 pm
by boydhouse
I figured out why it was doing this.

I did an upgrade of the software and I guess it changed the setting back to the default settings. It should work again.

Darryl

Re: Sterling Diaphragm Engine

Posted: Fri Nov 11, 2016 11:56 pm
by Ian S C
Always wondered who was running the show, Hi Buster.
Ian S C

Re: Sterling Diaphragm Engine

Posted: Sat Nov 12, 2016 2:01 am
by Trevor
Beautiful Cat. Thanks Darryl

Re: Sterling Diaphragm Engine

Posted: Sat Nov 12, 2016 2:06 am
by Trevor
OK! the image thing doesn't work. I will try the attachment and see if it will go in. At least you will see the diaphragms I hope.
Trevor

Re: Sterling Diaphragm Engine

Posted: Sat Nov 12, 2016 2:08 am
by Trevor
Hmm! Ok Ian - How did you put in the image. It didn't seem to work for me.
Trev

Re: Sterling Diaphragm Engine

Posted: Sat Nov 12, 2016 2:23 am
by Trevor
OK I think I have it. These are the diaphragm.
Trev

Re: Sterling Diaphragm Engine

Posted: Sat Nov 12, 2016 3:21 am
by Trevor
These are all the pictures as of tonight. Having problem making the crankshaft with a bell crank design so going back to the old way.
I have ordered the brass flat bar stock to make the the crank throws. Maybe a couple of weeks or so should see this up and running with luck.More photos will follow as I progress. Trevor

Re: Sterling Diaphragm Engine

Posted: Sat Nov 12, 2016 9:53 pm
by Trevor
Redoing my displacer for the engine. Looks a bit rough but it is only a cage to hold the stainless steel wool.
The one I had made earlier was made from two inverted tuna tins but had to much side clearance which was going to be a lot of dead space, hence, the redesign.
Has anyone else used this cage idea for a displacer?
Trevor

Re: Sterling Diaphragm Engine

Posted: Sun Nov 13, 2016 5:55 pm
by boydhouse
This photo is a "linked photo".




Casey and Riley.
Image

Re: Sterling Diaphragm Engine

Posted: Mon Nov 14, 2016 10:26 pm
by Trevor
Oh! What beautiful Dogs Darryl. Very inquisitive I think.
Trev

Re: Sterling Diaphragm Engine

Posted: Tue Nov 15, 2016 2:38 pm
by Trevor
Have finished the new Displacer complete with its stainless steel wool. It seems to fit snugly in the displacer tube without too much friction.
When the brass stock arrives will then finish the crank and fire her up. Will post photos when she is running in a couple of weeks I hope.
Trevor :razz:

Re: Sterling Diaphragm Engine

Posted: Thu Nov 17, 2016 2:43 am
by Trevor
Thanks Kong. I only hope it will work! I have nearly finished the radiator cooler for it and just finished readapting a gear pump for the water pump.The ratio for the drive will be 3:1 gear driven.
Trevor