Welcome, and I'm sure we are all interested in your archive stuff.

IIRC you need to have a few posts under your belt before the site will accept photos and downloads.

There appears to be a slip behind the Paper Mill Lock Tea Rooms at Little Baddow, but whether it is just private you'd need to investigate.

A visit to the P.S. Waverley web page shows that her boilers are now extinct. They are quite obviously looking for donations. There is plenty of 'gum bumping' about the problem on other sites.


https://www.waverleyexcursions.co.uk/

Cant got wrong, with your name.

Lopez Mike wrote: ↑

Wed Apr 17, 2019 6:44 pm

Which brings up another question. Since cutting down the reciprocating mass is generally a good idea, how about aluminum pistons? It's been a lifetime since I.C. engines used cast iron.

Already made some for my twin. If I can ever find some time to get back to it.

"Will the steam not have to expand at twice the usual rate" ANS: Not really, the piston(s) displacement, whatever it is, will still fully occur over 180 degrees of crank rotation, no different from a conventional engine running if at the same RPM as the one illustrated here. The difference is that ...

"Will the steam not have to expand at twice the usual rate" ANS: Not really, the piston(s) displacement, whatever it is, will still fully occur over 180 degrees of crank rotation, no different from a conventional engine running if at the same RPM as the one illustrated here. The difference is that ...

Random thought, having watched the motion on that. Will the steam not have to expand at twice the usual rate? Would that not cause a much more rapid temperature drop and therefore greater condensation in the cylinder? 'Tis only a late night thought, and I could be totally up a gum tree. Off to bed!

Basicaly, the ones I've seen are a ring round the crank with 36 notches the one at TDC is larger as calibrator. The notches are read by a small coil with a magnetic core. Don't ask about the attatched electronics, that's beyond my ken, but I believe they can calculate the crank position to better th...

Crankshaft rotation/postion sensing is nothing new or difficult on motor vehicles. The usual method is a magnetic reluctor. If it can be done for 1000s of rpm 100s shouldn't be too hard.