Welcome to ModelEngineMaker !If you have problems registering or logging in, please use the contact menu option to request assistance.
Thanks Andrew.When finished, I'm aiming for the hit n miss look. Using a pair of original diameter flywheels, which I've had cast specially for me.Thanks Ian.I'll remember that battery tip! I ummed an arred for a while. Then decided to make a new alloy piston, just to see if it would work....... Realising there was 4mm spare space below the piston, I made the new one 3mm longer. It stopped with a clunk, at the wear ridge made by the old piston! So, I shortened it....... It still insisted on hitting the wear pattern! So, I built the crank assembly, properly, while I thought about sleeving the cylinder........The cylinder is 10mm bore, and the bottom of the fins is around 14mm dia. So, I can only afford a sleeve with a wall thickness of1mm.I have ordered a length of cast iron. I think I'll try a cast iron piston, too! David D
Dean.Thanks for the nudge! I've just ordered a length, from CJW Steam.... http://www.ebay.co.uk/itm/120950241466?var=420084900656&ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1423.l2648Should go well, with a carbon piston.The ci hasn't arrived yet, and hobby things are at a bit of a standstill at the moment. I'll make my mind up, on the other side..... Thanks Dave!I already tried that, with the alloy piston. But, it must be a really weird shape down there, with the ci piston flapping as it changed direction........A drill out and re-sleeve, with a longer piston is the way to go, I think! David D