Endless Sphere

If determined, You could grind away the BB shell to form fit the motor placement. If its a bit too thin- breaks though, you could always lay in a few layers of carbon fabric to stabilize it and make it custom form fit.

My late electrician would save a bunch of wonder bread bags for this type of insulation duty. He would wrap lugs and larger connections as much as needed (voltage, vibration, and impact) to protect sharp edges from cutting through and cover with a layer of ele tape to keep it in place (shrink tube w...

Agree Tom. They should have added thermal roll back on this setup. Interesting to see the phase runner and ca setups on the HD. That would be a big improvement to the stock setup. Not sure the BBS02 is worth trying to retro fit with all it's mechanical shortcomings. New style stock controller and at...

It has a 46 tooth chain ring on it and a 32 rear. May need to go up to a 42 or bigger rear to have avoided the controller overheat. My 110 pound grand son was on it pedaling some 50 -55 rpms next to me when it went dead. Just on low pas level settings, maybe 40% power. Center leg again. We were abou...

I have a early BBS02 with another blown controller. It lost a leg on a steep climb while on a low (30 -40% current) pas setting but was steep enough to slow the cadence significantly even with significant rider input. Total weight was under 170 pounds but enough. Unfortunately, finding they changed ...

The chassis wire -switches- lights are 12v, and share many of the Ice components. I most likely will leave a second- 12v battery in it if easier. May make it easier to have a onboard LI battery heater connected for those times it may be needed and no outlet is near by for the overnight ac heater set...

It’s consistent across the entire range I’m aware of. But to your point, now that I looked it up in a table, I find that the difference in gauge for a 2:1 cross-sectional area ratio is in fact 3, not 2. :oops: And the 2:1 ratio is exact, not approximate. Yes the 3x rule works, but that leaves you p...

the approximate ratio of cross-sectional area is 2:1 Yes, and if your into approximates, that is suitable. Unfortunately that only holds relatively consistently for part of the range. Fine multi Stranding, also makes it difficult to compare physically and the open metal wire gauges difficult to use...

ZeroEm wrote: ↑May 11 2020 10:09am The leafmotor from leafbikes Called "black magic" comes with 3mm phase wires, between 8-9 gauge awg Which gauge converter are you using? The term "Gauge" varies with materials. To my understanding, Tradition is from firearms making balls from a pound of lead. Shee...

14S, 7 of the leaf modules should be a direct drop in. You may need check the stock controller programing for a suitable low voltage cut off for Li packs. Put a voltage indicator or alarm on the pack so you don't get too low if your exploring. The BMS I am waiting for will take care of that issue. I...

+1 on the stronger / heavier rim. Glad to see your replacing all the spokes. Any of the ones not broken, would most likely have been compromised structurally. The limiting factor to building the most stable wheels is the rim in most cases. It is what limits how tight you can string it also. It is al...

I posted some of the motor choices in another thread. https://endless-sphere.com/forums/viewtopic.php?f=28&t=68950 The 20KW would make a good flying motor IMO. Listed at 5KG It looks to be able to run on reasonable low voltage. http://mymobilemms.com/OFFTHEGRIDWATER.CA/images/238-50b.jpg With a free...

Flying ebike?

Two 6 - 12 foot propellers? How fast are they turning? Looking like a rc style outrunner would be it as mentioned before if your not needing to spoke or tire it for wheel use. Freewheeling crank set will allow you to direct mount a second sprocket if your planning on adding human power and using cha...

When your tension comes out of the wheel, you end up with one or two of the tighter spokes taking huge loads rather than spreading the loads out about the wheel through many spokes. As most here now understand, the thicker spokes allow for much less stretch and easier to become unsprung with minimal...

It does look like maybe the hole is a bit too big and or thick flange is helping ripping the caps off. All look like that? Is there room for washer? You want the spoke to start load transferring at the spoke bend and not bend and load at the cap base. Your healthy spokes and hole dents should lend s...

For Trials, the pegs are offset to the rear and set high and as inward as you can get for clearance. Crank puts you at potential disadvantage in both aspects. Fresh build could be set near anywhere you wish. Ideal would be a crank set that folds out of the way, and pegs that fold down for segment use.

This one is hard to put a rule of thumb on. Agree, it depends on a bunch of factors and your motor efficiency plot. Wishful that most of the common low cost motors are like a prius motor, but if we use the common plot, we can understand it a bit more IMO. Let say that a moderate target cruising spe...

I sometimes wonder why there seems to be a bit of a black and white division between mechanical / electronic. It has often seemed to me that electronics oriented people want to solve every problem electronically when there can be a perfectly reasonable mechanical solution Thinking most have not fal...

Rotors on most of the electric motors per KW are near equal in rotational mass to ICE race motors. Overshoot! :shock: A bit of clutch mass will mate well. Long term, no doubt that throttle only, with brake and reverse (with the help of more advanced controller brain and proper programing of motion c...

Jr class Gokarts run 28hp 125cc rotex 2 strokes and stall carts movement with the motor revving with gobs of throttle with brakes on and off for some time in the pits before heading out to race and still get many hours on clutch drums. It would not take much pressure to lock them up relatively tight...

Friction is good simple torque limiter for certain. Centrifugal also has the ability to freewheel, roll backwards a bit easier. A combination of the two on a clutch lever could be setup to release motor or engage it if springs were just reversed (compression vs tension) and cable pulled -(compressed...

standard for what? where does it go? is it possible to say "limit torque to 150 N.m ?" Sorry, if you could link to some basic learning resources I'd greatly appreciate it. Sorry, hard to judge where folks are starting from at times. Tons of google results on them, so best to get that at where your ...

Best to give it some extra current to get to cruising speed quicker than to gingerly creep up to it over a much longer time in general within some limits. At starting RPMs you have very low efficiency in the motor, so dumping too much current,will result in a significant amount of it going into heat...

A standard centrifugal clutch with a weaker spring would be a easy way to keep peak torque out and still have some lower rpm torque.