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Description
AndyMark EVO Shifter Short Keyed Shaft, StageA 2 - 22.67:1 Ratio, StageB 2 - 07.56:1 Ratio
Features smooth 4-tooth dog shifting
Includes US Digital encoder
Supports two or three interior stages
Utilizes pneumatic shift method
Reinforced with AMPCO® 18 Bronze
The AndyMark EVO Shifter Short Keyed Shaft, StageA 2 - 22.67:1 Ratio, StageB 2 - 07.56:1 Ratio 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 smooth and efficient transitions between gears. It is compatible with two CIM or NEO motors and can be configured with either two or three interior stages, offering flexibility in performance. The gearbox is shipped assembled, though motors are not installed.
Significant improvements have been made over previous models, including the use of AMPCO® 18 Bronze for the dog gear, which provides enhanced strength and lubricity. The shift block assembly has been reinforced with a larger bearing and threaded steel housing, contributing to the gearbox's robustness. The input stage features 32 DP gears and a 15-tooth pinion gear, facilitating a high first stage reduction. Users have the ability to independently select high and low ratios, providing greater customization.
The gearbox incorporates a pneumatic shift method, utilizing a spring-extend pneumatic cylinder for shifting. This allows for gear changes even during acceleration or deceleration. The gearbox is designed to be mounted on an AM14U family chassis or a 2"x1" box tube frame, using existing mounting plate holes. Weight ranges from 2.9 to 3.2 pounds for the two-stage version and 3.5 pounds for the three-stage version, excluding motors.
For optimal performance, it is recommended to run the gearbox for 30 minutes without grease to allow the gear teeth to wear in, followed by periodic application of Red Tacky Grease to the spur gears. The gearbox includes a US Digital encoder and a pneumatic cylinder, enhancing its functionality and ease of use.
Note: Ensure proper installation of pinion gears, especially when using a NEO motor, as a 3-ton arbor press is required due to the interference fit. Follow the NEO Press Fit Pinion Guide for safety and optimal performance.
1x Shielded, flanged ball bearing
1x US Digital encoder
1x Pneumatic cylinder
1x Red Tacky Grease, 14.2 gram
Various spacers, bearings, and hardware for assembly
Two-speed, shift-on-the-fly gearbox
Enhanced 4-tooth dog shifting method
Compatible with two CIM or NEO motors
Configurable with two or three internal stages
Selection of various 1/2 inch output shafts
Plates designed for mounting two motors
Pneumatic shift method with spring-extend pneumatic cylinder
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.
