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Makes And Models => Zero Motorcycles Forum | 2013+ => Topic started by: mistasam on May 01, 2017, 04:31:18 AM

Title: Where is the hp/torque measured?
Post by: mistasam on May 01, 2017, 04:31:18 AM

Does anyone know whether the power specs are measured from the motor or from the rear wheel?  For example, the 2017 SR has a bigger controller, but also a change in gearing.  Has anyone dyno'd straight from the motor, just out of curiosity?

Title: Re: Where is the hp/torque measured?
Post by: mrwilsn on May 01, 2017, 07:03:32 AM

Torque and horsepower listed in the specs are for the motor. To get torque at the rear axel you multiply by gear ratio.

2016 SR = 106lb-ft * (130/30) = 459 lb-ft
2017 SR = 116lb-ft * (90/20) = 522 lb-ft

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