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Description
AndyMark EVO Shifter Short Keyed Shaft, StageA 2 - 04.77:1 Ratio, StageB 2 - 16.37:1 Ratio
Incorporates a refined 4-tooth dog shifting mechanism
Supports two CIM or NEO motors with flexible stages
Features AMPCO® 18 Bronze for smooth, durable shifting
Allows independent selection of high/low gear ratios
Employs pneumatic shift method for on-the-fly changes
The AndyMark EVO Shifter Short Keyed Shaft, StageA 2 - 04.77:1 Ratio, StageB 2 - 16.37:1 Ratio represents a significant advancement in shifting transmission gearboxes. This two-speed, shift-on-the-fly gearbox incorporates a refined 4-tooth dog shifting mechanism, allowing for seamless transitions between gears. It is compatible with two CIM or NEO motors, and offers flexibility with two or three interior stages and various 1/2 inch output shafts. The gearbox is delivered assembled, though motors are not pre-installed.
Several enhancements distinguish this model from previous iterations. The dog gear now features four dogs per face, enhancing durability by providing more material around the dog gear screw. The use of AMPCO® 18 Bronze for the dog gear material offers properties akin to stainless steel, with added lubricity for smoother shifting. A robust shift block assembly with a larger bearing and threaded steel housing is included, and the input stage utilizes 32 DP gears with a 15 tooth pinion gear, facilitating a high first stage reduction.
The gearbox allows users to independently select high and low ratios, providing flexibility beyond fixed spreads. It supports multiple encoder options, including the US Digital E4T and the CTRE SRX mag encoder. Weight reduction features have been integrated into the gears and plates, and the design allows for easy disassembly and reassembly without concern for gear orientation. An optional third stage offers additional ratio choices, and the gearbox can be mounted to an AM14U family chassis or a 2"x1" box tube frame.
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. The cylinder defaults to "Ratio A" in the absence of air pressure, ensuring continued operation. Proper greasing is essential for optimal performance and longevity, with a recommended break-in period before applying grease. The encoder ratio for programming is 3:1 between the Output Shaft and Encoder Shaft for two-stage versions.
1x AndyMark EVO Shifter Short Keyed Shaft, StageA 2 - 04.77:1 Ratio, StageB 2 - 16.37:1 Ratio
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.
