Endless Sphere

No controller for vehicles is going to do what you're asking. ie a fixed amount of torque with rpm varying with load. Then on top of that you want it to be able to handle a duty of 5-7min at a time at 70% of max torque while turning low rpm, while somehow acting as a brake. Our vehicles aren't ridde...

I have motors with 13" rims and the lowest profile tire I've ever been able to source ends up a 19.25" OD, which I don't think there's any way to fit where a 10" wheel was. It's not just the diameter, but the width too, since the lower profile 13's end up 5"+ in width. If you get any more of those b...

+1 on forgetting the starter motor. Even some cordless powertool motors would be more appropriate. As far as car parts go, an alternator is just the ticket.

Looking at the 1500w 45a 48-84v controller How strong is the regen? Is there any soft start in the firmware or is it hard off the line? Or do i need to specify this when ordering the controller? I'm not sure what the standard settings are. Ask Leo. I've always specified regen strength along with so...

The solution to being able to get better exercise with an ebike is quite simple...choose more appropriate routes. The non-simple solution is an ebike I've planned for some time. That is a high powered ebike capable of safely mixing with traffic, which I'm sorry isn't riding slower that traffic, but ...

I use that type on large wires. First I bare just enough of the wire to fit in the connector. Then I grab one with the open side up with a vice or vice-grips, fill the cup with unmelted solder, and with a cheap can type torch melt the solder and add more until full. Then stick the wire in and hold i...

Solar panels for the shade creator would be just the ticket. Also, if you do another conversion, get the same kit with a 20" wheel instead. It will run significantly more efficiently with better performance. Erwin is probably eating the same amount he did before. Once he gets that back to an equilib...

Unless you already have the cells, I'd suggest going with a different battery. Leaf cells aren't up to the task...too saggy for a proper motorcycle build, which means a much shorter life due to higher current draw than they're made to deliver. Better ecar batteries will also fit in a better looking ...

Skeetab, If you add mass, you want to decrease diameter and increase voltage to get to the speed you want. With electric bicycle weights many can get away with large diameter wheels, but with hubbies on electric motos the smallest diameter you can live with is always the way to go unless ice-wagon p...

My buddy has a few Honda Expresses and we'll definitely go with an RC type outrunner rpm and keep the original reduction system. The small size and steering geometry make it something I wouldn't want to exceed 30mph on. It would be short distance errand runner, so enough RC lipo to get to the necess...

Rovii wrote: ↑

Jan 20 2019 12:43pm

...My daily cycle has only pedals, I am my own motor

Sorry to hear that unless you live where there's great cycling infrastructure. No way I'd pedal here...far too dangerous.

As far as I know you own the top speed of any hubmotored 2 wheeler. The highest I ever recorded with my daily rider was 172kph, and it had a bit more since it was still accelerating when I let off the throttle. Plus it wasn't at full charge. My newer ebike is running the same motor with a 6% larger...

As far as I know you own the top speed of any hubmotored 2 wheeler. The highest I ever recorded with my daily rider was 172kph, and it had a bit more since it was still accelerating when I let off the throttle. Plus it wasn't at full charge. My newer ebike is running the same motor with a 6% larger ...

I too am in the no connector camp. The only connectors on most of my bikes are charge plugs, though 2 have bolt together ring connectors on the power mains and phases just because I didn't want the heat of soldering heavy gauge wires too close to other wiring. The initial wiring takes only slightly ...

Any accurate discussion of what a motor can run at without including the gearing (wheel diameter for hubbies), total load, and terrain, isn't worth its pixels displayed.

...OP wasn't so serious, so we were free to roam. Obvoiusly some of us WANT to. . . . Exactly, I'd like to be out of the rain this rainy season, so 4-5 months to go is plenty of time for me if I get started soon. Sleek through the wind and easy in-n-out are my priorities, since pedals aren't a requ...

Bill, Where did you find the info that superconductors also have great thermal conductivity coefficients? Some quick research indicates that the opposite is true for know superconductors, ie they're good thermal insulators. Whether or not it's a good thermal conductor isn't important though, since a...

I didn't realize Twike came out with a sportier more eye candy version. I'd like to do something with the looks of the one on the right as a leaning delta, so it could be higher and narrower. For passengers, I have no issue with going inline seating. I want narrow enough to split traffic, and 3 whee...

I wish I had their electric, or even the 49cc version to start, because most of the components I used from the factory bike, the swingarm, and front end are particularly heavy. The headtube, bars, forks, fork tree, brake, and front wheel weigh something like 35kg. If I recall correctly the whole thi...

"Dereliction of the common interest", what a bunch of BS. Your typical liberal stance on everything that somehow bigger government and more regulation is good couldn't miss the target more. Gag me. Overt, over-the-top, mean-spirited politics belong elsewhere. With so much angst against your fellow ...

Here's one of the ebikes I've been riding for the past 9 months. I posted here in the ebike photo section, since here this legally qualifies as a motorized bicycle despite having moto components, no pedals, and being capable of well over 100. The battery pack is 31s or 115V nominal, 128 fresh off th...

Here's what she looks like after 9 months of running with only the one mistake going slow up a crazy steep hill with an extra 100lb or so aboard. I pegs were a bit high and forward, so I modded that bracket when I opened the bottom up to change the blown controller. I'm pleased with it so far, and s...

Solder the nickle strip to your copper wire and then tab weld to the cells. Why build a pack with 250 cycle cells anyway? I went to automotive grade cells years ago. I did the soldering stuff for a long time and would never go back. Higher power, longer life, much better safety, and either already a...

All that work and money to build a battery, so get a tab welder to make the final connection to the cells. More than likely it's heat damage from soldering that hurt performance of your original pack. I certainly wouldn't go to all that time and expense to build a pack that is suspect from the start...

I put 30-31kw into a 50 wide 273 with a Kv of 18+rpm/v in a 19.5"OD wheel with a 20s lipo pack. That's minimum voltage (74V when fully charged at 84V) X peak battery current (420A). Even with the 6" extended swingarm and a low bike, I had to hang my 275lbs (down to 210lb now thank goodness) out over...