@b264 Also thanks for the reply. I can see that your very experienced on this form and with electric longboards. I’m glad your first concern is safety. Electronic longboards are obviously not the safest hobbies/sport/mode of transportation in the world, thus we should strive to make them as safe as possible with proper pads, helmets, and technique. I’m not a physician, kinesiologist, or any other practice that’s qualified to recommend a helmet for any application whatsoever, but I think there’s some obvious concerns I can mention. Should the helmet be full faced with jaw protection? What should the mass of the helmet be (too heavy may increase the chance of a neck injury)? What is the certification of the helmet? With these concerns in mind, I think the best solution would be a light-weight, full-faced, longboard-specific, approved-by-a-physician helmet, but TBH those are kind of expensive. Instead, I will be going for an approved hard-shell brain-bucket helmet, that I have been using for years whilst flying downhill on conventional longboards. I will, however, start slow with my DIY electronic longboard. When I feel the need for speed (which is inventible), I will purchase a better helmet. While we’re on the topic of safety equipment, we should really be taking about pads. Knee pads, elbow pads, and wrist guards or sliding gloves. They are imperative to not getting hurt while going fast on a longboard. My 20+ years riding skateboards and longboards can definitely vouch for this. The saving-grace technique is when you get speed wobbles, keep low and transfer the momentum in horizontal direction using the pads to catch the fall and slowing down by creating friction with the pads. There’s other situations where pads can not help. In those situations it comes down to rider discretion and not being an idiot.
On the topic of boards, I am using a great board that I have a lot of experience on and trust at high speeds. It is an extremely ridged board with 2 layers of fiberglass. The board is a Prism HindSight Cop Caller. It’s made a hell of a freeride board and will hopefully make a decent electronic board. The enclosure I will make out of fiberglass. I am choosing fiberglass since it is an incredibly strong material and I know how to work with it. I can also bond the enclosure and bolt inserts (for the lid) directly to the board. It should be incredibly strong and impact resistant. Furthermore, since I am making the battery myself, I can design it’s spacers such that they can also mount with bolt inserts directly to the board. Mounting the battery directly to the board will be an additional layer of protection since there will be a gap between the enclosure lid and longboard (thinking impacts here, e.g. tree roots and other deformations in the pavement). I am not going into details about how I am manufacturing this enclosure (materials, quantities, gauges, techniques) here, since that would be a several page essay I don’t feel like writing down. Maybe if manufacturing this enclosure goes well and it proves to be a good enclosure, I will make a video or guide on how I made it. I will mention that safety should take precedence here. Some of these enclosures available on the market are just ridiculous vessels for lithium ion batteries a few inches of the ground at high speeds (think catastrophic failures i.e. punctured battery). Ultimately, I am going the DIY fiberglass route with the enclosure because there’s no board/enclosure that I like at a specific price point. Please do share any advice/wisdom you have on this topic.
You brought up a lot of things to consider, so I am not going to cover the full build. That should probably go in a different thread anyway. Hopefully I have addressed some of the points you brought up. Thanks again for the reply.
Edit: clarity ( I read my post again; thankfully I’m not a professional writer)