Member postings for Peter Benning

Thanks Brian, sorry for delay in answering, but have been fine tuning (fixing) and tarting up to put on a presentation plinth, with brass plaque!!

I think a Triple Expansion Steam Engine maybe a bit too advanced and I would have to use real steam. I still find it difficult to understand that the largest cylinder, works on negative pressure... I have looked at modern videos of the Waverley and it seems to have been modified from when I was on it. At that time it had a large "banana" link, which allowed the crankshaft to change direction from "Ahead" to "Astern" almost in one revolution! Since the Paddles were fixed it was the only way of stopping and sort of steer... I see now it has "Feathering" Paddles, which would allow greater control.

I may try and go to one of the Model Engineering shows to get an idea for my next project. The trouble with living in West Wales, you are a long way from everywhere!

Peter

Thanks again Jason. Yes I have it running now and after seeing your video, I'm trying to upload a short video, via YouTube...

I think the picture here is before I had adjusted the eccentric strap and added the two missing steam chest bolts!

Once I realized that the steam should be starting to be cut off half way on the stroke and be ported to the other end of the cylinder, adjustment became easier. Of course had I been using real steam, that would keep expanding within the cylinder, as the piston transited.

A keen eye may have noticed that on the exploded view of the steam chest, I have missed the two ports to the cylinder. I had to send off for two 1.5mm and 2.0mm end mills from Japan to complete...

In the early 70's I was on a training course up on the west coast of Scotland and had a day trip on PS Waverley - I spent most of the sea journey in the engine room looking at the Triple Expansion Steam Engine! - Now that's a proper steam engine!

Thanks JasonB. Have created & Uploaded photos of how the steam engine progressed...

How do you create an album and put pictures in?

Peter

The Link was a great help and I have been able to adjust the eccentric strap to get the timing correct. I have tested with compressed air and it runs quite well...

I'm quite pleased that after nearly 59 years I have managed to complete it! It tested my engineering skills somewhat and I'm not sure they have improved much since I was 15; even though my whole working life I was employed as an "Engineer"

I'll post a few pictures next...

Hi Robbo, Thanks a lot - The original plans by Edgar T. Westbury showed the valve gear at 90 degrees - I thought it was a mistake! I'll have a play tomorrow and report back...

Peter

Apparently this may not be a record! Anyway I have now completed it and mechanically it works, but I'm trying to run it on compressed air and it will not turn. The slide valve timing via the eccentric strap has been adjusted so that when the piston is at the far end, the slide valve is at the far end, so that as the piston starts to go up the cylinder the valve will open the port to allow air into the end of the cylinder to complete the stroke. When I add the compressed air (No particular pressure) to the top of the steam chest, it comes straight out of the exhaust port! I have taken the end cylinder cover off and air does come out the port... At the right time?

Does the slide valve timing need to be advanced (like in a car engine)?

Any help would be appreciated.

Peter Benning - New email: [email protected]

Hi all,

Thank you for your quick responses. Not sure if I have to respond to individual posts, but I'll try all this time...

Thanks JasonB; I have never heard of Grafite Yard, so will check on the link and I did need it for the rod glands as well. For the flywheel - a complete or just a rough cast will do.

Thanks Neil: I have been reading your magazine (MEW) for the last few months. I used to discribe myself as a "real" engineer - Now I'm not so sure, having seen and read the articles discribing amazing engineering skills!

Hi Windy, yes I went to Secondary Modern School in Harwich (1957 -62) and half day metalwork lessons were a joy and set me up for a Halton Apprenticeship.

Now approaching 70 (next month), I thought I better get a move on to finish this steam engine!

Peter

I'm getting close to finishing this steam engine (Which I started in 1959-60!! - Is this a record?).

What should I use for a piston ring/seal and I can't find a flywheel - 4 1/4" diameter to fit a 5/16" crank.

Any help or advice appreciated