Member postings for Alyn Foundry

It seems that my tablet couldn't handle the task. Here are a couple of photos of the Brayton Ready-Motor including the lovely flywheel casting that weighs a little over 30 Kgs.

Whilst convalescing I came across this thread, very interesting indeed but way over my head.

I am very grateful for the amazing work that Jason has done for me of late, I started on the Brayton model way back in 2004. It’s been a mainly off and on type of project but with Jason’s help I’m nearing the finish line now.

The flywheel has been cast and is ready for machining, just waiting for my number 2 son to get his 8-1/2” swing Le Blond up and running. I have a few pictures available but don’t know how to post them here. The model is really taking shape now putting all my equipment to the very edges of their capabilities.

The cylinder head photo, recently posted, shows the inlet valve to the left hand side with a very simple exhaust valve on the right. The inlet is mechanically pulled open to allow the fuel and air mixture, at around 60 PSI into the cylinder which will be ignited by a pilot light ( that’s the original method ) time will tell as to what I will use eventually. The inlet is then mechanically closed to allow for the expansion to occur. Just like a two stroke the exhaust is opened at TDC for the downstroke. The cycle then repeats. The top side of the cylinder is the air compressor. The fluted column is the air receiver.

Please feel free to ask any questions about this project, because of the many other “ Irons “ in the fire might take a little more time to finish.

Cheers Graham.

For clarification the CHUK range of engines are Vacuum engines, or flame gulpers. Specifically designed for novice or entry level modellers. Here are some links to the engines running.

https://youtu.be/S13wymzV0po

https://youtu.be/wIM7pErrFCc

https://youtu.be/CyouJxF6dpI

Cheers Graham.

Good morning Ron.

Perhaps you missed my earlier post on this thread? I'd also attached a link to a short video of CHUK 3 that uses my" improved " rotary valve arrangement. As Jason has pointed out the prototype had a rather small bore diameter but after meeting up with Bob Sier at an exhibition, he'd built one himself, he suggested a much bigger bore to get more power from the available atmospheric pressure.

Cheers Graham.

From the patterns....

To castings....

Errm, how do you attach a photo?

Good morning All.

I would like to thank Jason publicly for turning a thought into a reality.

CHUK was conceived for entry level machinists/modellers around 20 years ago when I was working for Chester UK. It's design is loosely based around the Victorian/Edwardian Vacuum engine toys made by Ernst Planck. CHUK 1 was a vertical, CHUK 2 an inverted vertical and CHUK 3 a horizontal. It's bore diameter can range from 30 mm to a maximum of 48 mm. The stroke is 50 mm. Up until CHUK " V " all engine kits were produced in Cast Iron with additional cast Brass embellishments. Here's a link to a recent video of CHUK 3 MK 2 with the new style rotary valve and " Chipmaster " exhaust.

https://youtu.be/CyouJxF6dpI

Cheers Graham.

Hello Richard.

lovely work! I can confirm that the thread size is M8 by 0.75 mm pitch. I used to make a Brass Banjo coupling to convert to the readily available 3/16" Copper pipe sold for brake pipe repair. This also helped because Wade made many 3/16" compression fittings.

Cheers Graham.

Hello Neil.

If you require any in depth information about construction please ask. I built several of my kits for customers who couldn't do it themselves. In fact I found this engine one of the quickest builds in my range. Piston to bore fit was the most critical, with the prototype we used a tool post grinder fitted with a Diamond lap to finish the cylinder however subsequent builds saw just minimal finishing with fine Emery cloth!! The large diameter bore made things so much easier.

I also have the original tracing done at A1 just like Gardner's in 1:1 ratio.

Kind regards, Graham.

Many thanks Jason.

Just to clarify the picture, No 33C, might be the thirty third size C engine built by Potts. Not built by AE & H Robinson.

Interesting air cooling and major owner modifications. David found many alterations, presumably the owners were looking to create a GT engine!!

Kind regards, Graham.

Hello All.

Jason told me about this thread, so I've joined up!!

Attached is a photo of a very early Robinson patent engine No 33C. Owned by Mr D Allen.

Kind regards, Graham.

Hmmm, I can't find a way of uploading a photo.......HELP!