This is the quest to finally build the engineering marvel that humankind has dreamed of since the dawn of time — the incredible:
I’ve been working on this on and off this year, but it’s 2 months till TEF1 Atlantic so it’s time to buckle down and actually build it, unless I want to stay on the underpowered board I was riding last year.
Objectives are as follows:
- Use 10 inch kart tires like all the cool kids
- Use the 4WD 6385 Reacher 245Kv / SKP Solo combo I’ve already got
- Comfortable handling at highway speeds, not just survivable handling
- Have a large available lean angle for comfy turns on-track
- Fit my 201cm ass on the board without a cramped stance
To fit points 1 and 2, the large tire diameter and high revving motors require a gear reduction at least 7:1, which would require 11T pinions on a stooge setup. I’ll be making laser cut 109T gears and matching motor mounts so I can enjoy longer service life with 15-17T pinions. Wheels are ready to go:
Taking care of points 3 and 4, I’m going to make my own trucks with a fully constrained pivot with about 45 degrees of lean, because I like Dualities but wish they went even farther. The rear will have no steer, and the front will have an ackermann steering knuckle system, go kart style. I think that lacking stable steering geometry (i.e. contact patch trails the steering axis) is really what’s holding boards back after you get rid of all the mechanical slop that normally causes speed wobbles. All of our conventional trucks get increasingly reactive as speed increases, which eventually forces you to choose between making the board rideable at high or low speeds.
Point #5 just requires a long ass deck. Already done, and it’s 45", 11-ply maple, fiberglassed, 3D print winged, W-concaved, black stained, fritted, and schmexy:
The belly pan has been cut, but needs processing.
The goal is to finish the work in Fusion this week so I can order all the laser cut parts, since that’s the current order-of-operations bottleneck. The printed parts for the enclosure sidewalls, cable, and bus bar management are ready to go, but the brackets need to be welded to the belly pan and the frame needs to be painted before the enclosure work can start.
