Endless Sphere

No hard numbers, but prob enough for bike charging. Some of the Speakons are actually four wires inside, so worth checking.

At your size, maybe one of the 26" wheel folders might ride better but still be storable.

Yup... Drip loops. I do boat electric, and it's really hard to seal several wires in a bundle. You sometimes see the box full of water that's gotten trapped in there.

Inverters turn DC into house voltage AC typically.

For what it's worth, I've sat there patiently explaining to new ebike users all about the charging, and how lithium doesn't like going real low, don't leave around fully charged etc... And had them come back saying I've been running the battery all the way down to dead before charging it and leaving...

Yes, that is a drawback of the parallel first setup.. hard to catch a bad cell in a group. In large car sized packs that's where cell level fusing gets important. But doing series first has drawbacks too. If you do a bunch of series ones that are then paralleled up just at the ends, not at cell leve...

That one sort of has the look of ultrasonic welding. Like this one...

I used to think that too, until my throttle wire shorted out, jumping my bike to full power in the middle of traffic heading towards a busy intersection. Its a powerful bike, so even with full braking it was moving pretty good until after dodging the bus and the cross traffic I was able to reach dow...

Yes, if one is self discharging, it could suck the others down with it, and ultimately would prob have gotten the forth one as well if you hadn't caught it.

The three big ones are for the phase wires, the little ones are the 5 Halls wires and one for a temp sensor usually, sometimes left disconnected.

You definitely don't want to be breaking the surface...I did that on my front foils right into a wave at top speed and went farther underwater than I ever have in a boat. What I meant was, if you stall the tail in a boat, it just noses up, loses speed, and settles back down into the water as you get...

They claimed 2.6 % efficiency in the article I read... So a ways to go on catching up to propellers.

It will be fine, as long as you really water seal it, with drip loops in the wires and whatnot. Its harder that it would seem to seal up the wire exits. I have several that were the wrong shape, that I took out of the cases, split in two, reconfigured and wired them back together. Starting with a pa...

It's harder on the cells mounting them vertically... It makes the central mandrel inside the can bounce up and down, compared to having them mounted on their sides. Not sure how much real world difference it makes depending on how fast you cycle thru a pack...

Not mine, but a recent thread on a build that used them..


viewtopic.php?f=6&t=93510&hilit=Boston

Functionality has an aesthetic all it's own... But there's many traditionally beautiful gems lurking in there too.

If you haven't bought anything yet, maybe consider some kind of prismatic cells. There's a lot of easy ways to do the interconnects, including bolt together type so you can replace a cell, and the reduction in balance wires, and the reduced need for cell level fusing (you're taking a pretty deeply p...

Just from memory they use an RCA type plug, and come in both 36v and 48v which it should say on the battery, and pretty much any generic charger should work in those voltages will work.

The motor is the same, as long as it's direct drive... It's the controller that makes the regen happen. But realise youre then getting into really really needing torque arms and non slipping axles once the alternating drive and regen starts making the axle rock back and forth.

I find that to be really satisfying riding... I used to be more out in the country, but now that's is lots of heavy city stop and go, that happens a lot! I loan my bike to many moto riders, and they're always blown away by the power delivery, light weight, the effectiveness in traffic, and the just ...

And just an FYI, depending on how much you value your time, if you have a whole working system you got cheap, a new rear motor is pretty cheap and easily gotten these days, by the time you grind lawyer lips, or more torque arms or switch forks etc, you could just go rear...

I don't do fronts much, anybody have any input on whether or not that's the direction of torque arm mounting that promotes it rotating the axle down out of the dropout?

Holding the motor washers in vice grips and taking them to the bench grinder until they fit in the recess worked for me. A cup of water for cooling them off for test fits is pretty handy.

Just a guess, but usually the washers that come with the motor are too big to fit in the circular recess around the dropout in a fork like normal bike axle washers do, and no matter how tight the nuts are it slips around a bit.