Alright after doing a little riding, I’m running into a significant issue with the pneumatics I’m testing, battery life. On the original hard wheels I have, I could go ~18 miles on full battery. With the pneumatics I’m testing right now, this range has decreased to about 3.5 miles. There are three main issues I think this stems from.
- I’m using pneumatics. I already know there’s increased rolling friction and was expecting to lose about half my battery life, but not 80% of it.
- The pneumatics have a really aggressive tread and they’re very flat at the contact point (all 1.5 inches of the tire is on the ground).
- Poor design in my hubs. It could very well be that my wheel hub designs are having an unforseen impact on this that I haven’t figured out.
For my commute, I need my board to safely go 6 miles (which is why I was hoping it would stay in the 8 or 9 mile range). I’m trying to figure out if I should drop the money on a bigger battery, scrap the pnuematics I was working on and go with one of the other designs above for scooter tires, or some other unseen option I haven’t thought of yet.
-Also, it may be worth noting that if I spin the wheels with my hand, they roll forever (good bearings working like they should). However, when I push myself on the board and roll to a stop, I stop after only about 5 feet of free rolling since there’s so much friction.