Endless Sphere

It says vcc near the positive power lead

Here is the inside

Hi Can't figure this one out. Its brushless. It has 3 phase and 5 wire hall sensors all normal so far... But Can't get it to fire up? There are 3 other connectors Black/white which i thought was brake or on switch. Red/black/green/yellow which i thought was throttle plus brake but could be pedal sen...

If a magnet sticks to it, its steel. Otherwise its aluminum. If its steel, you might be able to slide a thick box section down the tube. Then you can weld it without worrying about blowing holes through it. You need to cut the folding mechanism off first. Test the frame by jumping up and down on it....

I see no padding in these pics. Without foam padding the battery will bang into the frame and errode the cell insulation causing a short circuit through the frame. And fire

We need more info to even guess the cause of the fire.

What battery?
BMS?
Was it Charging?
How was it mounted?
Hard case?

It's worse than that. The cheap bms just cut off when first cell reaches 4.3v. There is no cell balance.
They are just to prevent fire.

When there is so much power that even the slightest touch of the throttle sends you on your back.

Maybe now that boris is in charge it will be different?
He rides bikes

Rim brakes are super annoying because there is so much to adjust. disc brakes are fixed and cant rotate hitting the tyre like rim brakes do. Rim brakes need to be adjusted on so many axis to kiss the rim e.g. up/down, rotationally, in/out. They have to be reguarly re-adjusted cos the adjustment bits...

Yes sorry mate. I think i got a bit carried away. Looks like i will have to open it up after all.

Looking at your pictures, the pack seems very close to the frame. I would be a little worried about the battery insulation being worn away by the frame banging into it on the bumps.

You could get have a meltdown if it shorts out!

Ah its not shorted there is resistance across the power leads

Oh and there is a broken blue wire at the axle entrance too?

So im guessing red is +5v, yellow is ground, and brown and orange are sense for throttle or pas?

What do you think?

so those 4 small wires im guessing are for a throttle or PAS?
maybe its working but i just didn't supply the right throttle input to make it spin?


This is a weird bike cos it had a massive controller shapped thing in the frame too.
and one in the motor it seems...

ah found this

viewtopic.php?f=2&t=30050

thanks ypedal

Hi Bet you've never seen a hub motor like this before? I looks like a bruched motor with temperature sensors. but when i connect it to a battery it doesn't move just draws a big current. so i figured it must be shorted, but how do i open it? there are no bolts to undo? i tried taking half the spokes...

Hi is there a way to by-pass a computer controled on switch to switch on with a normal switch? its the 5 wire display shown. I can't get the bike to switch on and i've tried a controller swap with a duplicate controller sent from the manufacturer. I've checked the throttle, halls and battery all ok....

Maybe all the short circuit tests i did killed it?

Attached

Yer im just using that to test this BMS.

I've tested another one now and that one was ok. Cut off at 4.3v

So maybe i just broke the last one as i was removing it from the pack to test?
-i didn't want to wreck a good pack just to test the bms. So i stuck it on a week battery.

Ha ha you must be joking! I've dealt with bestech before they are the worst.

Give you 2 working then all the rest are rejects.

Funny thing was, it managed to do short circuit protection and overdischarge protection ok...

I found this one in a pack i bought on ebay