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  • GMAC Motor System
  • GMAC Motor System

GMAC Motor System

$2,095.00
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The GMAC motor system was developed in conjunction with Grin Technologies and Mac motors, and is the premier lightweight, high-powered, regenerative-capable electric assist system. Featuring:

  • An 8.6 lb rear hub motor with up to 100 N-m of torque - higher than any hub-motor (and almost any mid-drive) e-bike on the market!
  • 28mph top speed, up to 40 mph for speed-unlimited software settings.
  • Variable regenerative braking - increase your range by 10-15% while virtually eliminating brake pad wear.
  • A 750 watt-hour frame-locking battery with cells from Tesla, with an upgraded even higher-capacity Sanyo battery available.
  • The Phaserunner/Baserunner motor controller, a state-of-the-art motor controller from Grin Technologies that provides immense power, top speed boost, and customizable motor response in a tiny package
  • Cycle Analyst V3 for unprecedented diagnostic and control precision
  • Sempu Torque Sensing Bottom Bracket (Square Taper - Inquire for Other Options)
  • A revolutionary motor axle that fits modern bicycles perfectly, with no risk of the motor's torque damaging your frame (not thru-axle compatible)
  • A 2-year warranty on the motor and battery, and a 3-year warranty on all other parts
    Price includes professional installation at our Seattle shop. If you're outside of the Seattle area, we can ship it to a local bike shop for professional installation at no additional cost, providing detailed instructions and phone support.
Motor 1,000 watt (2,000 watt peak) planetary geared brushless DC hub motor with cassette freehub body, locked clutch, and 10mm (135mm OLD) axle with splined torque arm interface. 8.6 lbs, 36 spoke hole, manufactured by Mac Motor. 10T/8.1 rpm/V winding speed (8T
Battery Weatherproof, locking enclosure 52V 15 amp-hour frame mount (Hailong) with Tesla 5.00 Ah 21700 cells (14S 3P cell configuration). 30A max discharge/15A max charge. Upgrade available: 52V 21 amp-hour Panasonic 18650GA 14S 6P battery with, 35A max discharge
Display Grin Tech Cycle Analyst V3 WP; shows precise system diagnostics and allows for advanced control schemes like pedal cadence sensing, cruise control, power limiting based on motor temperature, etc
Controller Baserunner/Phaserunner Field Oriented Controller from Grin Technologies. 40A/50A max battery current, 80A/96A max motor phase current for maximum torque (Baserunner/Phaserunner). Field weakening for unlimited top speed. 0.6 lbs
Charger 2.5A 58.8V (100%) charger with ST3 plug, UL certification. Upgraded Cycle Satiator available (up to 8A charge current, user programmable)
Cables CUSMADE waterproof 1910 motor connector, XT60 battery connector, JST crimpable control connectors
Spokes & Nipples 13G/14G Single Butted Pillar Stainless Steel (Sandvik T302+ Wire)
Rim Sun Ringle Rhyno Lite (20”, 26”, & 29er sizes), SR25 (700c sizes), Helix TR25+ (650b + 700c sizes), eyeleted, brushed or black sidewalls, black body
Pedal Sensor Sempu Torque Sensing Bottom Bracket (Sq. Taper - Inquire for other options)
Brake Cutoff Single glue-on reed switch or inline cable switch
Throttle Slim thumb throttle
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