I thought i wanted to share my latest design improvements for my electric mountainboard.

Although probably not necessary, I used 100% infill for mount body and 20% for the rest.

What's new?
I changed from chain to htd5 belts. This makes the board more silent, slightly more efficient and easier to built. Another thing is that the new pully is 3d-printed and designed to fit the wheels and trucks perfectly making it much easier to center (this was a minor problem with the old board. at high speeds it would create speed wobbles).
The new design is also a lot prettier in my opinion.

Parts used
Hardware:

• a mountainboard (duh!)
  https://www.mbs.com/boards/10101-mbs-colt-90-mountainboard-constellation
• 12 tooth htd5 motor gear with 8mm bore (ebay) (2)
• htd5 500 teeth 15mm wide belts (2+spares)
• idler bearings 625ZZ 5x16x5 (4)
• m4 bolts 5cm (2+spares)
• m4 locknuts (10)
• m5 locknuts (32)
• m8 locknuts (6)
• m4 washers (10)
• m5 washers (32)
• m8 washers (6)
• m5 threaded rod ~26cm (5)
• m5 threaded rod ~30cm (1)
• m8 threaded rod ~20 cm (2)
• m4 bolts 6cm (10)
• m5 bolts 8cm (2)

Electronics:

• vesc (2)
  http://diyelectricskateboard.com/diy-electric-skateboard-kits-parts/vesc-the-best-electric-skateboard-esc/
  http://shop.faradaymotion.com/shop/18-electronics/4-vesc-motor-controller/
• Turnigy SK3 192kv (or any other 12s brushless ~200kv motor) (2)
  i got this one: https://hobbyking.com/en_us/turnigy-aerodrive-sk3-6374-192kv-brushless-outrunner-motor.html
  here is another option: https://www.aliexpress.com/item/Maytech-6374-190KV-e-bike-electric-motor-longboard-motor/32666982968.html?ws_ab_test=searchweb201556_7,searchweb201602_4_10017_507_401,searchweb201603_1&btsid=bac5c47f-cf08-4292-b0fc-a6355c35e43c

Battery: (I think my battery pack is kind of a mess so I'd recommend you design something yourself)

• 30x 18650 samsung 25r cells
• 10x 18650 Cell Battery Holder Box from ebay (3 slots)

Remember to get wires, charger and connectors for the batteries if you don't have any.
I also recommend an antispark xt90 between the batteries and electronics or as a loop key.

There will be a video at some point, but not before 2019.