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Description
AndyMark EVO Shifter Short Hex Shaft, StageA 3 - 25.90:1 Ratio 1.14:1, StageB 3 - 18.71:1 Ratio 1.14:1
Features two-speed shift-on-the-fly gearbox
Supports two CIM or NEO motors
Includes robust 4-tooth dog shifting mechanism
Offers independent high and low ratios
Utilizes pneumatic spring-extend shift method
The AndyMark EVO Shifter Short Hex Shaft, StageA 3 - 25.90:1 Ratio 1.14:1, StageB 3 - 18.71:1 Ratio 1.14:1 represents a significant advancement in shifting transmission gearboxes. This two-speed, shift-on-the-fly gearbox is designed to accommodate two CIM or NEO motors, offering flexibility in motor input. The gearbox is engineered with two or three interior stages and features a selection of 1/2 inch output shafts. It is delivered assembled, though motors are not pre-installed.
This model incorporates several enhancements over previous iterations, including a robust 4-tooth dog shifting mechanism and a durable 1/8" diameter shoulder screw. The dog gear is crafted from AMPCO® 18 Bronze, providing enhanced lubricity and strength. A new shift block assembly with a larger bearing and threaded steel housing is also included. The gearbox allows users to independently select high and low ratios, offering greater customization. Additionally, it supports various encoder options, including the US Digital E4T and the CTRE SRX mag encoder.
The EVO Shifter employs a pneumatic shift method, utilizing a spring-extend pneumatic cylinder for seamless shifting during acceleration, pushing, or deceleration. The gearbox is compatible with an AM14U family chassis or a 2"x1" box tube frame, thanks to existing mounting plate holes. Weight ranges from 2.9 to 3.5 pounds, depending on the stage configuration.
Proper maintenance is crucial for optimal performance. It is recommended to run the gearbox for 30 minutes without grease for initial wear-in, followed by periodic application of Red Tacky Grease to the spur gears. The AMPCO® bronze dog gear does not require greasing. The encoder ratio for two-stage versions is 3:1 between the Output Shaft and Encoder Shaft.
1x AndyMark EVO Shifter Short Hex Shaft, StageA 3 - 25.90:1 Ratio 1.14:1, StageB 3 - 18.71:1 Ratio 1.14:1
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Build-it-yourself Robot Parts are not refundable once assembled. Robots & Kits requiring assembly or soldering are also not refundable once assembled, soldered or modified in any way. All sales of robotic software and apps are final and cannot be refunded or exchanged. Returns are not accepted on special orders and clearance items except when they are found defective, in which case the Product may be repaired or replaced at the Vendor’s discretion. 20% Restocking fees may apply if you are returning a large quantity of the same Product that was ordered specifically for you from the manufacturer.
Please note that all items will be reimbursed within 7 to 14 days of receiving the Product (shipping fees excluded). You must also cover the cost of returning the Product. Shipping fees will only be refunded if the return is a result of a shipping error on our part. Cleaning fees of USD 100 may also be charged if a domestic robot is returned and has not been properly cleaned.
