Weighshaft Bracket

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Weighshaft Bracket

Post  Heavyhaul on Tue 14 Mar 2017, 10:15 pm

Hi everyone,
I'm part of the second batch of builders, building the showman's engine, and was wondering if anyone else has had problems lining up the weighshaft bracket with the top and bottom slide bars. And if so how was the problem resolved.

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Steve (Heavyhaul)

Heavyhaul

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Re: Weighshaft Bracket

Post  lynnr on Wed 15 Mar 2017, 9:38 am

You should have plugs that go on the end of the valve spindles. These are used to get the initial alignment. On Crystal I had to grind some metal off the bottom of the weighshaft to allow it to fit to the boiler. DO NOT remove metal from the boiler.

Once you have the spindles inline then you put the slid bars on. I used all the packing supplied and a number of Guinness tin shims to get the "flatness" needed. Get the block end fitted and gaped with the weighshaft end floating. Then work on the other end. I also used the cross slide block off the piston to get a feel for the slides then put the piston on and removed any tightness and off angles once the slides were basically parallel to each other.
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Weighshaft Bracket

Post  Heavyhaul on Wed 15 Mar 2017, 10:21 am

Morning Lynn,

Many thanks for the information, I spoke to Steve at STW this morning and he said that they've had to machine upto 3mm off the bottom bracket in some cases. Going to recheck the valve spindle alignment and take it from there.

Regards
Steve (Heavyhaul)

Heavyhaul

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Age : 52
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Registration date : 2013-07-01

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