Robinson engine help needed...

Bernie The Bolt · Post by **Bernie The Bolt** » Thu Sep 25, 2008 1:10 pm

I'm building a Robinson type engine and a bit stuck!
My engine has a power piston of 1.25" dia and a stroke of 2" the displacer cylinder is 4.5" dia and the stroke is 1.125" all these sizes were guessed as I have no drawings beyond museum pictures.
The displacer is a stainless cup filled with stainless pot cleaners (looks like swarf) with the open end of the cup facing down towards the heat.

It won't run! despite having quite a good power stroke.

Any help/suggestions would be appreciated.

Bernie The Bolt · Post by **Bernie The Bolt** » Sun Sep 28, 2008 8:30 am

IT WORKS!!! After some work on the displacer (dumping the pot cleaners) and making it almost airtight my lovely wonderful super duper Robinson type engine finally managed a full cycle and then slowly gathered speed to a continuous RUN. YESSS!
Time for a celebration glass methinks...

(brilliant way to mark my wedding anniversary what?)

Bernie The Bolt · Post by **Bernie The Bolt** » Tue Sep 30, 2008 12:37 pm

and .... if anyone would like a pic of my efforts to copy a Robinson engine please email me and I will try to send a couple.

Incidentally I have named the engine "Shufti" as it was made from looking at pictures!

Bernie