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Rear Max45 All-Axle High Voltage SuperH Kit

Grin Rear Max45 All-Axle High Volage SuperH Conversion Kit for Fast Offroad Fatbike Applicataions. Options for 72V Battery, Graphic Display, Phaserunner Controller, and Integrated PAS/Torque Sensor. Supports 135mm Slotted and 150mm Thru-Axle Fatbike Dropouts.

 

From USD$1,370.00

To USD$3,475.20 Regular Price USD$3,650.20

In stock

SKU
KIT-GrinR-Fat_HV_SH
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Customize Rear Max45 All-Axle High Voltage SuperH Kit

The Rear Max45 All-Axle motor is available in 2 different winding speeds; a slow 7.2 rpm/V option and a standard 9 rpm/V model. In general we recommend the slow 7.2 rpm/V winding for 72V systems in order to get the most torque output at the 90A controller phase current limit. 

There are three cassette driver options for each winding. The PAS-only Shimano cassette is the lowest cost option for those who don't need a built-in torque sensor. For those wanting a torque sensor, both a Shimano HG and a higher end SRAM-XDR driver option are available. The SRAM-XD is used in 1x12 drivetrains with small 9 or 10 tooth cogs for better pedaling at high speeds. The axle adapters sets are available for conventional slotted dropouts and for 12mm thru-axle dropouts, for both ~170mm (4" tire) and ~190mm (5" tire) frame standards.

Torque Sensing Rear Max45 All-Axle Hub Motor for Fatbikes. Slow 5 turn (~7.2 rpm/V) Winding. Shimano HG Freehub.

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Torque Sensing Rear Max45 All-Axle Hub Motor for Fatbikes. Slow 5 turn (~7.2 rpm/V) Winding. Shimano HG Freehub.

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V3 Rear Grin All-Axle Torque Arm Kit

CNC Machined Torque Arm and Frame Clamp Assembly for V3 Rear All Axle Hub Motor (Not Compatible with V2 Hubs)

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CNC Machined Torque Arm and Frame Clamp Assembly for V3 Rear All Axle Hub Motor (Not Compatible with V2 Hubs)

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V3 Fat All-Axle Motor Adapter kit for Frames with 170mm Slotted Dropouts

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V3 Fat All-Axle Motor Adapter kit for Frames with 170mm Slotted Dropouts

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You can get a bare hub and lace it into a suitable 32 hole rim yourself, or choose to get a professional wheel build done here at Grin using our stock rim selections and quality Sapim butted spokes.  Our head wheel builder Robert has decades of experience and is renowned for building wheels that are nearly bombproof. 

If you want Grin to do the wheelbuild, be sure to select either the Silver or Black spoke option from the dropdown menu, along with your preferred rim. By default all wheels will be be dished with the rim dead center between the dropouts, if you require some special dishing offset for an oddball frame please mention that in the order comments.

If you are doing your own wheel build into your own rim, be sure to specify the required spoke length in the order comments to match your selected rim ERD and lacing pattern. If you require a wider rim than the ones we carry, you're welcome to source your own 32 hole fatbike rim and send it to us for your wheel build. Please get in touch with us to get an RMA # for the rim shipment.

At the moment the only 72V compatible controller that Grin offers is our Phaserunner. This mounts easily to the bicycle frame tubing and supports peak phase current of up to 90A, with continuous current of 45-50A.  

Grin Phaserunner Field Oriented Controller, New V6 Model Waterproof 8 pin CA-WP /9 pin Mains / 6 PAS plugs Molded L1019 Motor Connector 90V Max and 90 A Peak Phase Currents (~45A Continuous) Comes in Stainless Silver or Black Metal Shell Full Product Information Page  

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Grin Phaserunner Field Oriented Controller, New V6 Model Waterproof 8 pin CA-WP /9 pin Mains / 6 PAS plugs Molded L1019 Motor Connector 90V Max and 90 A Peak Phase Currents (~45A Continuous) Comes in Stainless Silver or Black Metal Shell Full Product Information Page  

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6 Pin HiGo MiniB Extension Cable, 44cm

44cm Long Extension Cable with 6 Pin HiGo MiniB Compatible Connectors, for Optional use with our Superharness

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44cm Long Extension Cable with 6 Pin HiGo MiniB Compatible Connectors, for Optional use with our Superharness

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Several display options are available to show basic information like bicycle speed, motor power, trip distance etc. through communication with the motor controller. The displays also provide the on/off power switch for the system and have up/down buttons to cycle through between 3 to 9 levels of pedal-assistance.

Colour Display with Integrated Up/Down and Power Buttons for Grin Super-H Kits.  Mounts Beside Hand Grip. Customized Version of 600C for Grin Tech, Works up to 72V and Shows Regen Current. 

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Colour Display with Integrated Up/Down and Power Buttons for Grin Super-H Kits.  Mounts Beside Hand Grip. Customized Version of 600C for Grin Tech, Works up to 72V and Shows Regen Current. 

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Main9 Superharness

Advanced Harness for Connecting Standard Displays,  Throttles and Ebrakes to V6 Phaserunner / Baserunner Controllers. Supports Multiple Modes of Regen Braking, and Front and Rear Light Control. 

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Advanced Harness for Connecting Standard Displays,  Throttles and Ebrakes to V6 Phaserunner / Baserunner Controllers. Supports Multiple Modes of Regen Braking, and Front and Rear Light Control. 

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Throttles, ebrake levers, pas sensors, and torque sensors all play a roll in how you interact with the ebike. The Torque or PAS sensor plugs in directly to the motor controller and provide assistance based on the assist level of the display, while throttle and ebrakes hook up to the Main9 Superharness.  If you are confused about the PAS and Torque sensor options, please see our pedal sensor info page.  Regenerative braking can be controlled either with a digital brake sensor and modulated with the throttle, with an analog brake sensor that produces a varying signal directly, or without a brake sensor using one of the bidirectional throttles instead. 

Universal Lever Thumb Throttle with Clamp On Handlebar Mount and 3 pin HiGo style connector

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Universal Lever Thumb Throttle with Clamp On Handlebar Mount and 3 pin HiGo style connector

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Most 72V batteries you find are rectangular packs held together by shrinkrwrap, but we've got some options for 72V batteries with proper molded enclosures that fit on your downtube or inside your frame triangle. 

There are a optional accessories that can help flush out the build, but be warned that most ebike electronics are only designed for up to 60V max operation. The items in the list below are all 72V compatible and will not fry from the high voltage battery. 

Handlebar Phone Mount with both Wireless and USB Charging, Wide 12-95V Input Range.  

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4 Pieces of Snap Together Black Plastic Cable Raceway, 15 and 20mm Wide, 50cm long. Self Adhesive Tap Bonds to Bicycle Tube, Perfect for Hiding Cable Runs. 

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Cable Bundling Kit, includes Spiral Wrap, Zip Ties, and Velcro Sleeves

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3m Long TTL-> USB programming cable for Satiator, Baserunner, Phaserunner and Cycle Analyst. *Note: All kits come pre-programmed, and most system behaviour is configurable with the Cycle Analyst buttons. But this cable is necessary if you plan to change more advanced controller settings or update device firmware* Full Product Info

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Laser Engrave 250 Watt Continuous Power Rating on Motor Side Plate.  This is Truthfull. ALL Hub Motors Offered by Grin Have an Operating Point (RPM and Allowable Temperature) Where They Can Only Sustain 250W. 

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Schwalbe Big Apple 26" x 2.15 Puncture Resistant Tire. 

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Rear Max45 All-Axle High Voltage SuperH Kit
Rear Max45 All-Axle High Voltage SuperH Kit

In stock

USD$1,479.00

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Actual cruising speed/perfomance under any loading conditions is well modeled in our simulator.
Launch Motor Simulator with Rear Max45 All-Axle High Voltage SuperH Kit

Summary
  • Rear Fat Motor Model:
    1 x Rear Max45 All-Axle, Slw HG
    SKU#: M-AA4505R_THG
  • All-Axle Rear Torque Arm:
    1 x V3 Rear Grin All-Axle Torque Arm Kit
    SKU#: TA-GrinR_V3
  • Rear Fat AA Adapters:
    1 x 170mm Slotted Dropout Rear Fatbike Adapters V3
    SKU#: MP-RQR_170
  • 72V L10 Controller:
    1 x V6 Phaserunner L10 - Silver
    SKU#: C-PRLV6_Sv
  • Motor PAS Extension Cable (Recommend 240mm for Baserunner, 440mm if using Phaserunner):
    1 x 6 Pin HiGo MiniB Extension Cable, 44cm
    SKU#: W-HiGo6_Ext_44
  • Display Model:
    1 x 600C Integrated Handlebar Display and Switch
    SKU#: DSP-600C
  • Display Harness:
    1 x Main9 Superharness
    SKU#: W-M9SHarness
  • Throttle Style (Higo):
    1 x Thumb Throttle with Clamp (40cm Cable, Higo Plug)
    SKU#: T-CLever_HG3

Grin Rear Max45 All-Axle hub motor SuperH Conversion kit with your choice of UART display, battery pack, and PAS/Torque sensor options. The basic display kits have a modern-looking screen but are not as customizable as our Cycle Analyst systems. Please see our Kit Types page for more details.

  • Motor is compatible with both 170mm and 190mm quick release slotted dropouts, and 177mm and 197mm thru axle dropouts, by selection of the right inserts and weighs 6kg.
  • Features 0.35mm laminations.
  • Statorade injection port.
  • L10 connector with internal thermistor.
  • V3 Motor includes a torque-sensing freehub with an extension cable reaching right up to the Cycle Analyst.
  • Options for either standard Shimano HG or SRAM XD driver Cassette freehub body. 
  • Torque-based assistance control and backpedal regen with no additional sensors to install.