Hi All
After a summer of running a B&B interspersed with plodding up and down the Canal du Midi on an 80 year old barge I finally got back into the shed and on with the CS project
As I've posted before the basis is a '34 ish hopper cooled 3.5 hp bottom end with a 6.5 hp cylinder and a strange iron piston.
I've no idea what the flywheels came off or if there is any difference in the cast in balance weights between the models, so, following this link
http://modelenginenews.org/etw/etw_bal/p2.htmlI set up test rig with a pair of ball bearing rollers borrowed from a mate, they run very nicely.
The calculation suggested that a weight of 4.744 kg - 10.45 lbs should be hung from the crank pin
I discovered that the flywheels, are around 800 grams - 1.75 lbs - short of counter weight.
As the smaller piston for would weigh less, and there's every chance these may be the original flywheels, this doesn't seem too far out.
If anyone has a smaller piston, rings and gudgeon (wrist) pin they could pop on the wife's scales whilst she's watching Jerry Springer, I'd be interested to know what the weight is. mine was 4.026 kg - 8.75 lbs.
As usual, any help, comments, suggestions and advice will be welcome.............
Many thanks
Stef