25 Central Park West suite 12E
NY, NY 10023
Published go-hubTM newspaper article click here
Retro 7 (now named the Kruizer 7) shown with optional chrome fenders and 2008 topeak trunk
click to enlarge
go-hub low profile trunk shown above
New 2009 Topeak MTX EX trunk
The go-hub electric motor kit features:
#408 500 watt (750 watt peak) brushless hub motor with powerful rare earth magnets laced to a 26" DOUBLE WALL alloy wheel with heavy duty stainless steel spokes.
20 amp instant start controller with 80C thermal cutoff protection. Motor, throttle and battery wires are connected inside of the controller. This new controller has just been released by the manufacturer and utilizes all of the latest upgrades. The internal motor, throttle and battery connection design is a go-hub exclusive!!
20 + mph and up to 30 mile range
36 volt 12ah battery pack with (3) high quality 12V12ah batteries installed and wired inside of trunk. All of the battery pack wiring is 12 gauge wire crimped AND soldered and covered with heat shrink tubing. Battery connection from the controller is heavy duty 10 gauge wire.
Deluxe Topeak MTX EX Trunk that slides and clips onto the heavy duty Topeak Explorer black alloy rear rack with track for easy on and off OR go-hub low profile trunk with alloy rack. The low profile trunk is expandable. It is held to the rack with built in velcro straps.
30 amp inline fuse inside the trunk.
On/Off Key Switch access at the front of the trunk.
Crystalyte 36 volt 2.5 amp charger with XLR plug (equivalent to 4 Amp heavy transformer charger in charging time)br>Thumb Throttle with battery power gauge.
Anderson 30 amp Powerpole battery connectors.
allen and spoke wrenches included for easy installation!!
90 day warranty.
The go-hub step thru Retro 7 e-cruiser bike plus the go-hub 26" hub motor conversion kit will be shipped to you partially assembled. All you have to do is mount the front wheel, controller, throttle, and rear rack. Slip the handlebars into the frame, screw in the pedals, tighten and adjust the front brake cable, put in seatpost and seat, put air in the front tire, slide the trunk onto the rear rack, plug in the batteries and you are ready to ride!!
There is no competition for the go-hub Retro 7 bike.
We use only the highest quality components available to make go-hub the best in the business!!
Order your go-hub step thru Kruiser 7 today!
go-hub......The Silent Ride!!
go-hub Motor Technology
The go-hub motor has three phases, or power supply wires (think of this as a 3-cyclinder automobile engine.) Each of these phases fires in succession with the others, determined by the "Central Brain", or what is called the "PWM (pulse width modulation) Controller." Inside the motor on the outer perimeter there are many "rare earth magnets". Closer to the center of the motor are the wire coils, also wired in three phases. As a pulse of electricity is sent to the motor from the controller the coils create a strong magnetic field, which repulses them from the magnets and causes the motor to advance (rotate) away from the magnets. The controller then sends another pulse of electricity and the next phase fires, rotating the motor even further. It's helpful to think of our automobile engine example: 3 cyclinders - each firing one after the other.
There are three power (phase) wires going into the hub motor, and five Hall Effects Sensor wires coming out of the hub motor. The Hall Effects wires are used only to help the motor start from a dead stop.