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2013-14 Shelby GT500
Gear Effect On Dyno Results
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<blockquote data-quote="GNBRETT" data-source="post: 16331378" data-attributes="member: 111882"><p>Dyno results are most accurate when the final drive is 1:1. The further you go from 1:1 the less accurate your dyno results will be. It has to do with the frictional loss of gear sets.</p><p></p><p>The car really is faster. Higher gear ratio will make more rotational inertia visible as the dyno reads it. </p><p></p><p>Motor HP does not change when you change gear ratios. The only thing that changes is the torque. When you change gear ratios both RPM and torque readings will change but horsepower will not.</p><p></p><p>The dyno doesn't care about the gear ratio. It's not getting info from the drum its getting it from the engine. An inductive wire is attached to a spark plug wire to determine RPM. The Drum only measures TQ.</p></blockquote><p></p>
[QUOTE="GNBRETT, post: 16331378, member: 111882"] Dyno results are most accurate when the final drive is 1:1. The further you go from 1:1 the less accurate your dyno results will be. It has to do with the frictional loss of gear sets. The car really is faster. Higher gear ratio will make more rotational inertia visible as the dyno reads it. Motor HP does not change when you change gear ratios. The only thing that changes is the torque. When you change gear ratios both RPM and torque readings will change but horsepower will not. The dyno doesn't care about the gear ratio. It's not getting info from the drum its getting it from the engine. An inductive wire is attached to a spark plug wire to determine RPM. The Drum only measures TQ. [/QUOTE]
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2013-14 Shelby GT500
Gear Effect On Dyno Results
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