Sorry to hear about the k-nee Colin🤔
Life seems to consist of more and more Workarounds these days! GWS👍
I ain't driving nowhere at the moment, car's in the shop getting it's snout straightened.
Bent last week by a lady, hurrying to a bus apparently, appearing out of the dark, dressed all in black(!) and crashing into my right front wing. Somewhat traumatic experience, but getting back on an even keel now.
Ref the mini steam engine; Coulda saved meself the effort (shoulda known with you😁)
You and your mates were spot on. Mark's engine is seemingly certain a Bing.
Made by the Brothers Bing (not Grimm!😮) probably in the 1930s.
They continued on producing until 1945 apparently. Not sure what they actually made during WW2 though.
Pic shows a selection of their little Standing Engines.
Link leads to a lot more. There is apparently a 'Bing Dampfmaschineum', a museum full of Bings!
Cheers All, Doug 😎