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Description
AndyMark EVO Shifter Short Hex Shaft, StageA 3 - 45.33:1 Ratio 2:1, StageB 3 - 09.54:1 Ratio 2:1
Features shift-on-the-fly two-speed gearbox
Includes AMPCO 18 Bronze dog gear
Supports two CIM or NEO motors
Offers easy disassembly and customization
Uses pneumatic spring-extend shifting
The AndyMark EVO Shifter Short Hex Shaft, StageA 3 - 45.33:1 Ratio 2:1, StageB 3 - 09.54:1 Ratio 2:1 represents a significant advancement in shifting transmission gearboxes. This two-speed, shift-on-the-fly gearbox is designed with an improved 4-tooth dog shifting method, allowing for seamless transitions between speeds. It accommodates two CIM or NEO motors and offers flexibility with two or three interior stages, along with various 1/2 inch output shaft options. The gearbox is delivered assembled, though motors are not pre-installed.
The EVO Shifter incorporates several enhancements over previous models, including a robust 1/8" diameter shoulder screw and a dog gear made from AMPCO® 18 Bronze, which provides added lubricity for smoother shifting. The shift block assembly is reinforced with a larger bearing and threaded steel housing. The input stage features 32 DP gears and a 15-tooth pinion gear, enabling a high first stage reduction. Users can independently select high and low ratios, offering greater customization. The gearbox also supports multiple encoder options, such as the US Digital E4T and the CTRE SRX mag encoder.
The gearbox is designed with aggressive weight reduction features and allows for easy disassembly and reassembly without concern for gear orientation. It can be mounted to an AM14U family chassis or a 2"x1" box tube frame using existing mounting plate holes. The EVO Shifter employs a pneumatic shift method, utilizing a spring-extend pneumatic cylinder for shifting, which can be executed while a robot is in motion.
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 programming is 3:1 between the Output Shaft and Encoder Shaft for two-stage versions.
1x AndyMark EVO Shifter Short Hex Shaft, StageA 3 - 45.33:1 Ratio 2:1, StageB 3 - 09.54:1 Ratio 2:1
If you are not satisfied for whatever reason with a Product you bought on the Site, it is possible to return it for refund within 30 days from the date you received it unless otherwise indicated in the Product listing. You must first advise the Vendor associated with your order in your account to obtain a return authorization (‘’RA’’) number before returning a Product. (‘’RA’’) numbers are valid for 30 days, within which time the returned Products should be received by the Vendor. No returns will be accepted without having previously obtained an (‘’RA’’) number. The Product must then be returned in its original packaging (in perfect condition for resale) with its receipt and your (‘’RA’’) number. Reimbursement will be denied for any Products which do not conform to the above mentioned conditions.
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.
