Quote:
Originally Posted by samwichse
So what are you doing with your homemade velo?
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I'm going to re-build it.
It's getting a rear suspension to compliment its front suspension, 16" motorcycle rims all around laced to stronger hubs with cotter pin axles, solar race car tires, the seat reclined further back(allowed by a smaller rear wheel), a roll cage, hydraulic disc brakes, a Schlumpf drive to greatly extend my gearing range, 6" ground clearance, and I'm going to make a greatly more aerodynamic carbon fiber body shell around it. The Milan I bought is being studied to guide my design choices. I'm going to set my custom velomobile up for 10+ kW and a 100+ mph top speed with PAS, BUT it will hopefully still retain enough efficiency to be pedaled to 40+ mph in a sprint on flat ground with the electric drive disabled as well as have low enough gearing to go 3 mph up a steep hill with a 60 rpm cadence. This is going to serve as a prototype to something that will then be built based off of that design.
I'm hoping to develop a platform that can accommodate a range of vehicles, from a 70 lb 100% human powered velomobile, to a 100 lb all wheel drive electric vehicle that has the bicycle drivetrain removed and an accelerator and brake pedal in their place with a powerful enough drive system to make more than 1 horsepower per pound of vehicle weight, or anything in between(racing kart, street legal 750W electric velomobile, illegal insanely fast electric velomobile, ect). By doing such, it can expand the potential market for the platform to justify increased production volume to keep per unit costs down.
I'd very much like to make a ridiculously fast/efficient ultralight sports car that weighed in around 120 lbs, and had at least that amount of horsepower. With a good body design, it could perhaps be stable to about 120 mph without lifting off the ground, and could be done using off the shelf cheap Chinese ebike motors/controllers with some LoneStar batteries, which might allow 0-120 mph acceleration in under 5 seconds. If it is as slippery as a velomobile, it would only need a 2-3 kWh pack to get acceptable range. Other than the chassis, every part on it would have a replacement cost in the hundreds of dollars or below, instead of tens of thousands of dollars as plagues modern EVs.