Grin Rear Max45 All-Axle CA3 Kit

Grin Rear Max45 All-Axle Cycle Analyst Based Fatbike Conversion Kit with Lithium Battery, Baserunner L10 Controller or Phaserunner Controller, and Integrated PAS/Torque Sensor. Supports Slotted and Thru-Axle Fatbike Dropouts.

Full Product Information Page

 

From USD$1,269.00

To USD$3,552.70 Regular Price USD$3,727.70

In stock

SKU
KIT-GrinR-Fat_CA3
Customize Grin Rear Max45 All-Axle CA3 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. If sustained torque is the main objective, then we recommend the slower motor winding and a 52V or higher battery pack since the maximum phase current of the Baserunner/Phaserunner motor controllers will otherwise be the limiting factor in how much power you get.

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.

Click Here for detailed product info page

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

Click Here for detailed product info page

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)

Click Here for detailed product info page

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

Click Here for detailed product info page

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

Click Here for detailed product info page

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

Click Here for detailed product info page

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.


The Baserunner controller is ideal if you are getting a downtube battery as we will mount it inside the battery cradle.  The larger Phaserunner is required if you need an option that can run up to 72V, or if you are using one of the other battery models. It will also produce slightly higher peak torque due to the 90A vs 80A max phase current. 


V6 Baserunner_L10 Field Oriented Motor Controller. Flat Profile Fits Many Downtube Battery Enclosures. L1019 Motor Plug. 80A Peak Phase Currents (~45-50A Continuous), for 24-52V Batteries (60V Max Input).  Full Product Information Page

Click Here for detailed product info page

V6 Baserunner_L10 Field Oriented Motor Controller. Flat Profile Fits Many Downtube Battery Enclosures. L1019 Motor Plug. 80A Peak Phase Currents (~45-50A Continuous), for 24-52V Batteries (60V Max Input).  Full Product Information Page

Click Here for detailed product info page

Aluminum Controller Mount for Reention Poly-DPxC Series Downtube Batteries, Machined to fit Baserunner Motor Controllers

Click Here for detailed product info page

Aluminum Controller Mount for Reention Poly-DPxC Series Downtube Batteries, Machined to fit Baserunner Motor Controllers

Click Here for detailed product info page

The V3 Cycle Analyst is an integral part of this kit system that ties together the throttle, ebrake, PAS, and torque sensor signals into a highly configurable platform that can be readily customized for a range of performance behaviors you can't get anywhere else. As a display it may look a tad clunky, but the functionality it offers is simply unparalleled and continues to increase with each new firmware release.


CA3-WPx

V3 Direct Plug Cycle Analyst with Waterproof 8 Pin HiGo CA Plug for Ready to Roll Kits.110 cm cable length. Mounting bracket not included. 

Click Here for detailed product info page

V3 Direct Plug Cycle Analyst with Waterproof 8 Pin HiGo CA Plug for Ready to Roll Kits.110 cm cable length. Mounting bracket not included. 

Click Here for detailed product info page

CA3_MFSwitch for CA3-WPx

Multifunction Switch for CA3-WP, with On/Off Power, Up/Down Digital Aux Buttons, and Screen Toggle. 45 cm cable length.

Click Here for detailed product info page

Multifunction Switch for CA3-WP, with On/Off Power, Up/Down Digital Aux Buttons, and Screen Toggle. 45 cm cable length.

Click Here for detailed product info page

Stainless Steel Mounting Plate for Attaching CA to Bicycle Steer Tube

Click Here for detailed product info page

Stainless Steel Mounting Plate for Attaching CA to Bicycle Steer Tube

Click Here for detailed product info page

PAS to CA Adapter Cable 120cm

PAS/Torque Sensor to CA3 cable - HiGo 6 pin Female and 5-pin JST-SM Male, 120cm. 

Click Here for detailed product info page

PAS/Torque Sensor to CA3 cable - HiGo 6 pin Female and 5-pin JST-SM Male, 120cm. 

Click Here for detailed product info page

The kit will run with any battery pack from 24V to 52V nominal (and up to 72V with a Phaserunner).
We offer a range of batteries that will work well depending on the geometry of your bike, the range you need on a charge, and how fast you want to go.  Please see our battery info page for more details on the different pack options.  
Be sure to select a charger model that matches the voltage (36V, 48V, or 52V) and connector style (ST3 or XLR) of the chosen pack.  


Throttles, ebrake levers, pas sensors, and torque sensors all play a roll in how you interact with the ebike. Torque and PAS sensor automatically power the bike whenever you pedal with an assist level controlled by the CA3's MFSwitch, while a throttle gives manual control. Please see our PAS info page for more details on these options

Even if you choose a PAS or Torque sensor as the primary control, we always recommend having a throttle as well. It can be handy to accelerate in tight situations and is great as a back-up if ever the pedal sensor has issues.  

Regenerative Braking can be controlled with the addition of an ebrake lever, using the throttle to modulate the signal, or it can also be activated through back-pedal crank's rotation. 


There are a number of optional electronic and mechanical accessories that can help flush out the build. This includes front and rear bike lights, phone chargers, wire management, programming cables, and what have you. 


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

Click Here for detailed product info page

Bike tracker that works with Apple Find My  

Click Here for detailed product info page

Wide Voltage Range (6-60V), 3 watt Ebikes Light, Fork Fender mounting. 50cm cable, 5.5x2.1mm DC Jack. On/off Switch, Powers off Cycle Analyst/Anderson Tap. StVZO Compliant.

Click Here for detailed product info page

Super Bright (Max 1900 Lumen) Ebike Light with Handlebar Button and Hi/Low Beam Modes and Daytime Run Lights as Well. 12-60V Input Range with Reflective Cutoff Optics. Plugs Directly to Cycle Analyst.

Click Here for detailed product info page

Main9 to DC 5.5mm x 2.1mm Male Adapter, 1m long. Provides Convenient Power Source for Rear Bike Lights from Unused Main9 Plug in Controllers with V3 Cycle Analyst  

Click Here for detailed product info page

180cm DC Accessory Extension Cable

Click Here for detailed product info page

Rear Ebike Light, No On/Off Push Button, 6-60V Input Range with DC 5.5x2.1mm DC Jack. 

Click Here for detailed product info page

Parallel Anderson Cable for Baserunners Installed in Reention Case. Simplifies Dual Controllers or Dual Battery Systems.  Must be purchased with Baserunner and Reention battery

Click Here for detailed product info page

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. 

Click Here for detailed product info page

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

Click Here for detailed product info page

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. 

Click Here for detailed product info page

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

Click Here for detailed product info page

Schwalbe Big Apple 26" x 2.15 Puncture Resistant Tire. 

Click Here for detailed product info page

* Required Fields

Your Customization
Grin Rear All-Axle Ready to Roll Kit
Grin Rear Max45 All-Axle CA3 Kit

In stock

USD$1,383.00

Unable to add to cart because these items are out of stock:

Actual cruising speed/perfomance under any loading conditions is well modeled in our simulator.
Launch Motor Simulator with Grin Rear Max45 All-Axle CA3 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
  • L10 Controller:
    1 x V6 Baserunner_L10
    SKU#: C-BRLV6
  • Baserunner Controller Mount:
    1 x Reention battery baseplate, machined to fit Baserunner
    SKU#: CP-BPReen
  • V3 Cycle Analyst:
    1 x CA3-WPx
    SKU#: CA-CA3-WPx
  • Auxiliary Input and Power Switch:
    1 x CA3_MFSwitch for CA3-WPx
    SKU#: CAP-CA3_MFSwitch
  • CA Mounting Bracket Style:
    1 x Steer Tube Mounted Bracket for Cycle Analysts
    SKU#: CAP-CA_SteerBracket
  • Extension/Adapter Cable - Integrated PAS to CA:
    1 x PAS to CA Adapter Cable 120cm
    SKU#: W-H6FJ5M_120

Grin Rear Max45 All-Axle hub motor kit with downtube battery and integrated Baserunner_L10 or Phaserunner motor controller.

  • 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 6.2kg
  • 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.