Office of Steam Forum for Model & Toy Steam Gas & Hot Air Engines

The MSM Pevensey Steam Engines are sure running nice
and you a nice air set up.

So what did you do to it ? Only change  the valves ?
 Did you pack the  pistons ?

Cheers
Dennis

Jim, that must be such a relief after having messed with them for so long.  I don't think I have ever seen an engine run on such a low air pressure.  Wow, they are like paired sewing machines they are so smooth.

Rog

you have them running "spot on" now Jim, were they assembled at the factory incorrectly ?I do like twin engines running together. often times I like an unpolished presentation....lol every-time you think you have it all figured out, something silly would happen, I remember you had started a thread about video bloopers , i really enjoyed that as well.I really have been wanting to buy some of these engines & will pull the trigger on them eventually.

Thanks everyone, appreciate the replies.
Some might remember that (like Mike Mazarowski's) one of the Pevensey's arrived built back to front and upside down And Geoff (Demon) gave me the help to get that sorted out. They ran ok, but never had much power (a slight touch on the flywheel would stop them) but they looked great at least. Not knowing a whole lot on timing engines, every time I tried it just led to failure and I'd put them aside again. I wrote to MSM and asked for instructions, the first set they sent I tried to follow them and couldn't get anywhere. When Geoff read them, he said that they were all wrong. I told MSM and they apologised and said that there were wrong and rewrote them. I still couldn't time them and always had air leaking out when turning the flywheel (there was no position where there was not air leaking out).

My MSM Echuca has always ran well and had LOTS of power. I took it down and took the cover off and noticed that the slide valve was slightly different from the Pevensey's but still oblong 13mm x 10mm, but it was orientated a different way???
I took the Pevensey's apart and put the slide valves in orientated the opposite way. After watching heaps of Keith Appleton's timing videos I attempted again to set the valve timing and then small adjustments on the eccentric.
Two TOTALLY different engines now. When turning the flywheels there's two distinct places where no air escapes and two where air escapes and they have power enough that I cant stop them with my fingers. Its been a long time getting here, but I am glad that its sorted out.

That’s a very interesting story. When I told the Demon about my engine being assembled upside down, I remember his exact words were. “Silly MSM!”.
I’ve reassembled mine in my head many times over the last few months and I’m confident I can do it when I have the time.
I’m glad to see your two are running so well now Jim. They look and sound terrific. 😀👍
It’s good that you were persistent and kept trying new things.
I asked MSM for help and they really do try to help but I was sort of scolded for running mine on air when they saw the video. 😂 I have an in-line oiler so I know I didn’t damage anything.