Traction Engine Safety Valves
by John
Some videos of showing the safety valves functioning, boiler pressures etc.in my Fowler 3″ scale R3 traction engine.
Warrick Sandberg safety valves. Substantially bigger holes. “pop” action.
And one of the Fowler being driven by my brother.
johnsmachines 
Well worth the new safety valves it seems. To me it is also good that the valves blow off at slightly different pressures although some may think the the second at 102PSI too high. I think it should fall well within the safety margin and the boiler inspector will soon tell you either way.
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13/11/17 Passed! Inspector happy! Me too!
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So nice to see your brother cruising on the little snorter. Maybe you can hook up a mower to it and give him engineer status and a timetable.
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Haha.
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