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You will have a new way to know if your car slowed down because of the brush tension or the pickup shoe spring force
Reversing the DC power input leads will not damage the dynamometer
Unlike the Dyno 2
The Ideal setup is to have both brush tensioners at the same force
0 the Positive + side of the power supply must be connected to the (Red) terminal of the Dyno
VRP SRM Tool You will have a newThe SRM Tool (Spring Resistance Meter) does two things; first it accurately measures in 1 10 of a gram increments the spring tension on the pickup shoes one at a time for all HO cars both Pancake and inline motor type cars. The SRM Tool (Spring Resistance Meter) does three things; It accurately measures the spring tension on the pickup shoes one at a time for all HO cars both Pancake and Inline motor type cars. See Pictures. It measures the brush arm
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