- Wed Mar 09, 2016 11:20 am
#56066
Apologies, Papasmurf, I jumped to the wrong conclusion from what you had written. The later machines had a cunning device operated by a wee lever mounted through the timing chest which when deployed kept the exhaust valve open for about half the compression stroke, thus you were only compressing a column of gas of about 53mm instead of the 106mm full stroke. If you forget to engage it you do run the risk of severe physical damage. If you ever find yourself near Swanage in Dorset with a bit of time to spare get in touch and come and have a play if you like, my current machine is a M120 solo mongrel. Best, Adam.