xenodius said:
Approximately, probably a few over now, with rack and bags and whatnot. Don't have a scale anymore and my last wasn't accurate anyway but it came to 95.
95 is a good weight. You'd only need to lose 5 lbs to fit a good shell...
That CroMotor is 24 lbs.
I've tried to time acceleration, but the watching the display and riding can be hard, plus the display doesn't update fast enough to be accurate. 0-30 in under 3 seconds is just possible.
That's faster than most cars.
OVS increases torque before you even hit your "top" speed. 43mph in my case, but with OVS... I passed 70mph on a downgrade and old firmware. I'm using a Pirelli ML75 in the rear, and similar thickness 14" slicks up front.
From where did you obtain these slicks? Any special wheels needed to accommodate them(Make? Model?)?
24s A123 pack (80v nominal, virtually no sag) and 150A, I've pulled 14kw peak.
That's f***cking awesome. Any videos to share of it being ridden?
For my first prototype, I'm thinking somewhere around 48v, but that will really be determined by the availability of, operating range of, and peak/continuous power ratings of motors 10 lbs and under. I want a 10 lb or less motor capable of 10 hp peak and 2 hp cont. The Astroflight 3220 definitely meets the peak power requirement at 15hp with 44.4V, and weight requirement at only 5 lbs(add a little extra for the mid drive components), but what is its continuous rating? Any other motors that meet this need? I'm still searching.
25wh/mi definitely requires throttle discipline =)
I expect that condition! A steady 30 mph in a vehicle capable of almost twice that speed that will require that throttle discipline anyhow. Without it, I don't get the needed range, and can become a target for law enforcement to harass. With it, I plod along at 30 mph all day long on some country road, and make it to my destination.
I guess I got it in my head that you'd be doing a mid-drive (which are definitely better for low-speed efficiency)
Yes, I am heavily leaning towards one, but only for the efficiency and weight reduction.
If there is a < 10 lbs hub motor out there which can make at least 10 hp peak for ~20 seconds, and 2 hp cont, with good efficiency at low speeds, and costs under $600, I would be very interested. I like the simplicity and silent operation that a hub motor can allow, it will make it easier to get on the road as an ev, and the regen would help with range. However, the hub motors I've seen so far that are capable of meeting my power requirements are too heavy.
My first motor will only see 1 kW electrical input, but when I put it in the 2nd prototype, I want to simply re-program the controller and voila, be pumping 10+ kW peak electrically to the motor and making 10+ mechanical horsepower.
I want to be able to re-use all of my EV parts on the first build prototype for the second final build. This keeps cost down.
Does the texas weight limit include cargo?
None that I'm aware of.
It seems unreasonable to include cargo. Yet, if it does, in the case that an officer actually stops you to weigh your ebike (which sounds like you have reason to expect, but I've never heard of in the USA) then that could serve as an excuse.
Yes, but I want the operating bike by itself, with everything needed to make it go, including body, to have a dry weight of not more than 100 lbs, to the ounce, preferably with a good 2-3 lb margin.
If weight becomes too much of an issue, I can always "store" a replacement battery in my backpack to "re-fuel" in the middle of a long trip, without having to plug in. Covering 300 miles in one day is the goal. Austin is ~220 miles from me, and I'd like to be able to make that trip in < 9 hours on one charge. A 300 mile range at 30 mph with some pedaling is preferred, but I could settle for a 150 mile range instead, if I had to, and swap a fresh battery when my first one was depleted, and charge the depleted one at a restaurant or something when the opportunity arose.
The battery also has to be removable so that I can legally ride it as a pedal-only velomobile in states where the vehicle would be illegal as an ebike in any capacity at all(like Missouri, Connecticut, or New York), without having to take the vehicle apart.
