AndyMark EVO Slim 7.56:1 Ratio, 3.875in Shaft Length
Offers customizable assembly kit
Utilizes lightweight aluminum plates
Supports up to three motors
Includes durable all-steel gears
Compatible with CIM and NEO motors
The AndyMark EVO Slim 7.56:1 Ratio, 3.875in Shaft Length is a high-performance, lightweight gearbox designed for competition robots. It offers a robust solution for creating efficient drive trains, sharing many components with the EVO Shifter, including weight-relieving features and durable construction with all-steel gears and aluminum plates. This gearbox is provided in kit form, allowing for customization and assembly to accommodate up to three motors, although motors are not included.
The EVO Slim gearbox utilizes a 15 Tooth 32DP pinion gear, which is included but does not use a key. For those who may find the installation challenging, it is recommended to purchase a motor with the pinion pre-installed. The gearbox is compatible with both CIM and NEO motors, with specific installation procedures for each. When using a NEO motor, a 3-ton arbor press is necessary due to the interference fit required. For CIM motors, the pinion may either slip or press fit, depending on manufacturing tolerances, and the use of red Loctite 271 is advised to ensure secure attachment.
The gearbox also supports encoder options, including the E4T Optical Encoder Kit and the SRX Mag Encoder, which require a 3D printed mount plate. Future versions will include appropriate holes in the motor plates to accommodate the Encoder Mount Pad. When using the SRX Mag Encoder, additional mounting hardware is required.
Note: Ensure proper installation procedures are followed to maintain safety and performance standards.
1x AndyMark EVO Slim 7.56:1 Ratio, 3.875in Shaft Length
This gearbox is shipped in kit form, not assembled, with hardware to accept 3 motors. Please note motors are not included with these gearboxes.
If you are not satisfied with a product purchased from the Site, you may request a return within 30 days from the delivery date, unless the product is listed under the Return Exceptions below or is subject to specific return conditions noted on the product page.
This return policy also applies, as a minimum standard, to products sold and fulfilled by third-party vendors through the Marketplace.
Returns under this policy concern non-defective products. In the case of a confirmed manufacturing defect, remedies are handled under the Warranty terms, at the Vendor's discretion. See the Warranty section.
Return Conditions
To qualify for a refund under the 30-day return policy, all of the following conditions must be met:
A valid Return Authorization (RA) number must be obtained prior to returning the product. Returns without an RA number will be refused.
The RA number is valid for 30 days. The returned item must be received within that period.
The RA number must be included with the return.
Products must be returned in unused, unmodified condition (e.g., no scratches, alterations, missing parts, or signs of installation/use) and in their original packaging, suitable for resale.
Shipping fees are non-refundable. Return shipping costs are the responsibility of the customer, except in cases of a product confirmed defective through RobotShop's troubleshooting process or of a verified shipping error by RobotShop.
Refunds are processed within 7 days after receipt and inspection of the returned item.
A $100 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 RobotShop'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 RobotShop and ordered specifically to fulfill a customer request.
While the same return policy applies, these orders require a separate contact process for returns.
RobotShop Fulfilled Orders → submit a support ticket from your account under My Support Tickets.
Marketplace Vendor Orders → submit a ticket from your account under My Marketplace Tickets to contact the vendor directly.
Note: Marketplace vendor products are normally labelled with SKUs starting with RM, and identified on the product page with the mention "Sold and fulfilled by [Vendor Name]".
