In practice the valve spindle length is adjusted to ensure this as part of setting the timing.
2.
The valve spindle crossheads were screwed to the ends of the valve spindles and secured with locknuts.
3.
The valve spindle crossheads were screwed to the ends of the valve spindles and secured with locknuts.
4.
Once again, the gabs were driven by the eccentrics and the pin drove the valve spindle.
5.
An eccentric between the two crankpins drove the centrally-mounted valve spindle by another short connecting rod.
6.
He did not wish to use an extension of the valve spindles, as on Gresley conjugated valve gear.
7.
By the time he located the correct handwheel, the valve spindle had been bent by the force of the flooding water.
8.
Soft grease lubrication was used throughout for the motion gear, except the piston rods, valve spindles and main crossheads, which were oil-lubricated.
9.
Holcroft continued to develop this mechanism by driving the middle cylinder gear of a steam locomotive from the outside cylinder combination levers, as opposed to Gresley's method of using direct transmission from the front valve spindles.
10.
Holcroft s valve gear design was also an attempt to address the problems associated with Gresley s conjugated valve gear, which was prone to variations in valve events caused by heat expansion of the valve spindles within the pistons.
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