sl-mechanical
5bb5c7f863
fix: update baseplate with real battery dimensions (420x88x56mm)
Replaces placeholder 185x72x52mm battery spec with caliper-verified
pack dimensions. 2 packs side-by-side is the default config.
Geometry impact:
- PLATE_DEPTH reduced to 210mm (2x88mm + 17mm margin each side)
- Battery zone: 420x176mm centred between motor forks (fits 600mm wheelbase)
- Mount holes repositioned: 4 per pack x 2 packs = 8 M4 holes
at (±(BATT_L/2 - 18), ±BATT_W/2)
- Velcro strap slots: 25mm wide, pierce full plate depth at x=±BATT_L/4
- 4-pack expansion: optional M5 shelf bolt holes when BATT_PACKS=4
(only viable 4-pack layout is 2+2 underdeck — analysed in BOM)
- Battery ghost in assembly preview shows 2-pack deck layout
4-pack analysis (added to BOM):
in-line 840mm > wheelbase, side-by-side 352mm > plate depth
→ 2+2 underdeck shelf is the only viable 4-pack configuration
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>