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Step-down gearing for Chassis 1/10 Adaptable - DKS-Basic

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ambrmart

@ambrmart_1544729

Reduces the gear ratio from 1:3 down to 1:8.95

Rating: 5 / 5
Likes: 49
Downloads: 234
Makes: 3
Views: 1,681
Reviews: 3

Updated at source: Feb 18, 2025

Model information

Source: Printables
Category: RC & Robotics
License: Creative Commons — Attribution

Details Files (9)Makes & comments (Makes: 3) (Comments: 17)Remixes (0)Collections (47)

Summary:
After building a Robak 2 for my nephew using robaki's Reduction Gears, I was reminded of Duke Dok's chassis and my not-so-great decision to use a 3900KV motor.

This gear set is designed to reduce speed to approximately one-third. The additional bearings required are the same size as those already used on the rear of the original chassis. To accommodate printing inaccuracies and prevent binding, 0.4mm were added to the optimal center distance of the gears.

Thanks to Robaki for providing the STEP files for his design in the Robak Discord.

Onshape assembly:
https://cad.onshape.com/documents/efd634b925a8c3fb3f932cc1/w/752ca0fa2879f907ecae846f/e/91b3f1af997314ec04e679e9?renderMode=0&uiState=67b39f1cdc1ffe21f0b7d8de

Hardware:

Part	Size	Qty
Bearing	6701, 12x18x4mm	3
Hex brass standoff	M3x20mm	1
Socket head cap screw	M3x10mm	2
	M3x16mm	4
	M3x20mm	2
Set screw	M3x3-4mm	1

"Happy printing, and God bless, my friend."
— Bob Ross