类似于Yokomo或MST变速器设计

Yokomo/MST like gearbox

2023-06-22 15:34:46

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Summary

Yokomo / MST 2.5 like 3d printed gearbox.

DM2 drift chassis compatible gearbox.
I would not recommend consider this gearbox as permanent solution. Use it temporary before purchase factory one from MST.

Operational, tested - works well but noisy. Optimized to print with ABS (if you print with PETG - highly likely all holes will be oversized, plus you can't install insert nuts. For 3mm holes i set 3.2mm in the model, and after print i pass through with 3mm drill). For gears I recommend to use nylon as alternative, but be sure to use nylon with shrinkage close to ABS shrinkage. Fill up insert nut's holes with abs-acetone solution(liquor) after installing nuts. Gears itself are not compatible with MST gears, so you can't mix.

To assemble you need bearings, m3 embeded nuts, 2x 20mm 4mm steel shaft, m4 0.3mm washers, some m3 screews and HSP diff (flyingfish, 02024). In addition you need one 55mm M2.5 screw (plus nut and washer).

Partlist:

MXS-310101R - MST RMX Aluminum motor mount - highly recommended (~7$). Plastic one is included, but better buy this one. Link
Bearings (use ABEC-5 or better to eliminate any play):
1. 6700 RS - 2pcs
2. MR105 RS - 2pcs
3. MR84 4x8x3mm - 2pcs
4. MR104 4x10x4mm - 2pcs
M2.5 screws:
1. 55mm - 1pcs (plus nut and washer)
M3 screws and nuts:
1. 16mm Hex Socket Head - 1pcs
2. 10mm Hex Socket Button Head - 2pcs
3. Insert Nut m3 length 3-4mm - 20pcs
80t sakura spur
20t- 24t 48p pinion