AndyMark EVO Shifter am14u Family Hex Shaft, StageA 2 - 04.77:1 Ratio, StageB 2 - 22.67:1 Ratio
Advances in shifting with two speeds and smooth transitions
Features robust AMPCO® 18 Bronze dog gear
Allows independent high and low ratio customization
Offers pneumatic shift for reliable performance
Supports two CIM or NEO motors for versatility
The AndyMark EVO Shifter am14u Family Hex Shaft, StageA 2 - 04.77:1 Ratio, StageB 2 - 22.67:1 Ratio represents a significant advancement in shifting transmission gearboxes. This two-speed, shift-on-the-fly gearbox incorporates an enhanced 4-tooth dog shifting mechanism, 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 output shaft selection.
The gearbox features several improvements over previous models, including a robust 1/8" diameter shoulder screw and a dog gear made from AMPCO® 18 Bronze, which provides added strength and lubricity. The shift block assembly is reinforced with a larger bearing and threaded steel housing, enhancing durability. The input stage utilizes 32 DP gears and a 15-tooth pinion gear, achieving a high first stage reduction of 85:15. Users have the autonomy to select their preferred high and low ratios, with the option to swap ratios as needed.
The EVO Shifter is designed with aggressive weight reduction features and can be mounted to an AM14U family chassis or a 2"x1" box tube frame. It employs a pneumatic shift method powered by a spring-extend pneumatic cylinder, ensuring reliable performance even during acceleration or deceleration. The gearbox is shipped assembled, though motors are not installed.
Additional features include a 3:1 encoder ratio on two-stage versions and compatibility with various encoder options, such as the US Digital E4T. The gearbox requires periodic application of Red Tacky Grease for optimal operation, following a recommended break-in period. The design facilitates easy assembly and disassembly, with cluster gears featuring identical characteristics on both sides.
1x AndyMark EVO Shifter am14u Family Hex Shaft, StageA 2 - 04.77:1 Ratio, StageB 2 - 22.67:1 Ratio
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Returns under this policy concern non-defective products. In the case of a confirmed manufacturing defect, remedies are handled under the Warranty terms, at RoboItchi's discretion. See the Warranty section.
Return Conditions
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The RA number is valid for 30 days. The returned item must be received within that period.
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Refunds are processed within 7 days after receipt and inspection of the returned item.
A ¥10,000 cleaning fee may apply to domestic robots returned in used or unclean condition.
A 20% restocking fee may apply to large-quantity returns of items ordered specifically for the customer from the manufacturer or not part of RoboItchi's standard inventory.
Return Exceptions
The following products are not eligible for return or refund under this policy:
Used, damaged, or modified products — Items that show signs of use, wear, or alteration, making them unsuitable for resale.
Consumables — Use and wear-and-tear components, altered or depleted through use (e.g., batteries, belts, brushes, gears, filament, tires, disposable bags, lubricants, greases, waxes, etc.). Not eligible for return once opened or used.
Perishables — Goods liable to deteriorate or expire rapidly. Not eligible for return.
Sealed goods (health or hygiene) — Items sealed for health-protection or hygiene reasons (e.g., masks, gloves, odor-absorbing products). Not eligible for return once unsealed.
Build-it-yourself products and items requiring customer assembly — Including robots & kits, robot parts, and other products requiring assembly or soldering. Not eligible for return once assembled, soldered, or installed.
Digital Goods, Software, and Apps — Final sale only, due to licensing restrictions.
Clearance Items — Products identified as clearance or final sale, including end-of-life or discontinued items.
Custom-made, personalized, or special-order items — Products manufactured, configured, adapted, or built to the customer's own specifications and requirements.
On-Demand Items — Standard catalogue products not stocked by RoboItchi and ordered specifically to fulfill a customer request.
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