AndyMark's Summer Hours: Monday - Thursday, 8:00 am - 5:00 pm ET. Closed Fridays through July 31, 2026.
20% OFF! Use code SAVE20 to save 20% on select products!

AndyMark's Summer Hours: Monday - Thursday, 8:00 am - 5:00 pm ET. Closed Fridays through July 31, 2026.
20% OFF! Use code SAVE20 to save 20% on select products!

Dual 775 Gearbox - am-2MotorSportShaft_1 - Image-1 - migrated

Dual 775 Gearbox

by AndyMark

$35.00 USD - $53.00 USD

$35.00 USD

$35.00 USD - $53.00 USD

$35.00 USD - $53.00 USD

$35.00 USD

Use this gearbox with one or two AndyMark RedLine motors for a more powerful option.

Quantity

SKU

Description
Specifications
Documentation

This gearbox is designed to take one or two AndyMark RedLine Motors (am-3775) and combine them with a 52:16 (3.25:1) reduction to give you a total package of about the same size and weight of one CIM motor, but with 6000 rpm and almost 700 watts of power! Use this most places you would use a CIM with its optional CIM shaft and mounting geometry or pick a 3/8 hex output shaft to directly drive a large variety of motion components. There is even an option to replace the shaft with the input pinion for a Blue Sport gearbox to replace your current motor with 2 RedLines for at least double the power.

This gearbox ships unassembled with hardware to attach one or two AndyMark 775 RedLine Motors (am-3775). Build it yourself with just 4 screws and an arbor press to install the pinion gears onto the motors. Want the pinions for this gearbox pre-installed on your motors? We have that too! Just note if you get motors with pre-installed pinions you'll have two pinions left over.

Product Usage:
All AndyMark gearboxes require grease for proper operation and long life. We suggest using our Red Tacky Grease, am-2768.
- Motor Input: 775
- Motor Quantity: 1, 2
- Ratio: 3.25:1
CAD Files
am-3987 Sport 2 Motor Gearbox With CIM Shaft And Plate.STEP
am-3986 Sport 2 Motor Gearbox With 375 Hex Shaft.STEP
am-3985 Sport 2 Motor Gearbox With Pinion Shaft.STEP
am-3984 Sport 2 Motor Gearbox With No Shaft.STEP
Layout Prints
am-3985 Sport 2 Motor Gearbox Exploded.PDF
am-3984 Sport 2 Motor Gearbox Layout.PDF

Purchase options

Select a purchase option to pre order this product

Countdown header
Countdown message

DAYS

:

HRS

:

MINS

:

SECS