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                   GMAC Installation Guide

                                            Rev 1.0

The final stage is to align the Frame Holder for the best fit to the torque arm. The 
holder is made deliberately asymmetric so that it can be flipped 180 degrees in 
order to accommodate a wide range of frame geometries with 4 different 
alignment planes. Select the one that fits most closely with the plane of the 
torque arm, and then secure them together with the M5 bolt and flanged nyloc 
nut. 

Finally, secure the Frame Holder to the chainstay using the two hose-clamps. The
black shrink tubing can be installed over each band in order protect the paint 
finish and have a more discrete look. 

The M10 washers and axle nuts must also be installed and thoroughly tightened 
on the GMAC motor axle. We recommend tightening to at least 40 Nm (30 ft-lb). 

Summary of Contents for GMAC

Page 1: ...so be eliminated as well Round 10mm Axle By using a round 10mm axle the hub fits properly inside the bicycle dropout slot and the disk rotor aligns properly with industry standard Integrated Torque Arm An integrated torque arm on the splined portion of the motor axle allows for zero play installations to handle forwards and regen torques without any slop It also eliminates torque transmission and ...

Page 2: ...disk rotor remove the installed torque plate to access disk rotor bolts This may require prying with a screwdriver Remove the disk spacer ring and replace it with the disk rotor Reposition the torque plate over the axle splines aligning the slot with the wire exit Align the splines of the axle into the torque plate and press or tap the plate down until the splines protrude past the plate ...

Page 3: ...f your frame has either a different angle on the dropouts for example a horizontal dropout you would need to remove the torque arm from the torque plate and rotate it such that the wire exit matches the angle of the dropout when the torque arm is rotated to meet the frame s chain stay The splined interface allows for rotation between the torque arm and torque plate in 30 degree steps Once the arm ...

Page 4: ...Select the one that fits most closely with the plane of the torque arm and then secure them together with the M5 bolt and flanged nyloc nut Finally secure the Frame Holder to the chainstay using the two hose clamps The black shrink tubing can be installed over each band in order protect the paint finish and have a more discrete look The M10 washers and axle nuts must also be installed and thorough...

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