Search found 1725 matches

by Voltron
Jun 22 2019 12:00pm
Forum: Battery Technology
Topic: 18650 Insulator Rings - Redundant?
Replies: 20
Views: 352

Re: 18650 Insulator Rings - Redundant?

Use the rings if you're a home builder. Maybe they're overkill if you have an integrated system where the controller can't be hot rodded, and the pack has built in temperature sensors, and the welds are robotically done for uniformity, and the cells are highly quality controlled, and the connecting ...
by Voltron
Jun 15 2019 2:20pm
Forum: Alternative Energy
Topic: washing machine 12 inch bldc outrunner
Replies: 23
Views: 415

Re: washing machine 12 inch bldc outrunner

They just need to add a flux capacitor and they'll be ready to go! 😜
by Voltron
Jun 15 2019 12:28pm
Forum: Alternative Energy
Topic: washing machine 12 inch bldc outrunner
Replies: 23
Views: 415

Re: washing machine 12 inch bldc outrunner

Maybe explain what you mean by self looping then... Because it sounds a lot like perpetual motion.
by Voltron
Jun 15 2019 12:23pm
Forum: E-Vehicles General Discussion
Topic: EV Global upgrade
Replies: 19
Views: 890

Re: EV Global upgrade

The frames of an EVG make a great platform for upgrading. With modern battery, motor, controller, bigger crank, and upgraded brakes (I added a disc brake mount to the rear) they're fun to race around, esp in pairs. The frames are incredibly stiff... Never a hint of wiggles no matter how hard they're...
by Voltron
Jun 15 2019 11:42am
Forum: Alternative Energy
Topic: washing machine 12 inch bldc outrunner
Replies: 23
Views: 415

Re: washing machine 12 inch bldc outrunner

You know there no way to run a generator from an electric motor, and run that motor off the generator, right? That it would violate the basic laws of energy conservation, and that perpetual motion doesn't exist, right? Because as soon as you mention something like that it makes people ignore what ot...
by Voltron
Jun 05 2019 10:26am
Forum: E-Bike General Discussion
Topic: Ok, I bent the new rim... Looking for a stronger rim.
Replies: 10
Views: 588

Re: Ok, I bent the new rim... Looking for a stronger rim.

Just be ready for the effect the extra wheel weight will have on the handling.... Those steel rims are heavy, and wheels are just about the worst place to add unnecessary weight with the way the spinning magnifies the weight difference.
by Voltron
May 27 2019 11:24am
Forum: E-Bike Technical
Topic: What is the advantage to a 19" front and 17" rear rim setup?
Replies: 9
Views: 321

Re: What is the advantage to a 19" front and 17" rear rim setup?

As soon as you go internally geared motor with clutch, you introduce a lot more failure points off-road, esp on landings if the throttle is still on. Stripped gears, sheared keystock, broken clutch plate, etc. I've failed a couple just riding power wheelies off curbs for example... Plus harder to co...
by Voltron
May 27 2019 11:15am
Forum: Stand-up E-scooters and E-skateboards
Topic: Test The Brake Lever Switch help
Replies: 81
Views: 1388

Re: Test The Brake Lever Switch help

I don't know what 1 means on your meter.. Is that perfect continuity or perfect resistance? If it's the same thing as touching the meter probes together gets you, and the brake light is on without the lever being pulled, then the wires are probably pinched and shorting the 2 wires together somewhere...
by Voltron
May 25 2019 7:22pm
Forum: E-Bike Technical
Topic: What is the advantage to a 19" front and 17" rear rim setup?
Replies: 9
Views: 321

Re: What is the advantage to a 19" front and 17" rear rim setup?

It's a generalized thing that direct drive hub motors tend to running too low an rpm, especially when starting to bog down on hills. One quick way to change that is to run a smaller diameter wheel, which now has to run a higher rpm for the same mph or kph. But it only really helps if you also up the...
by Voltron
May 25 2019 1:34pm
Forum: Stand-up E-scooters and E-skateboards
Topic: Test The Brake Lever Switch help
Replies: 81
Views: 1388

Re: Test The Brake Lever Switch help

What I meant was some brake switches have 3 wires going to them (Hall sensor type... Harder to test).

Even though it's only one lever, yours is two wire type.
by Voltron
May 25 2019 1:03pm
Forum: Stand-up E-scooters and E-skateboards
Topic: Test The Brake Lever Switch help
Replies: 81
Views: 1388

Re: Test The Brake Lever Switch help

You could either set it for volts (usually should be about 5 volts) or continuity (open circuit with the lever not pulled)
If you have 2 wire type brake switches, and if they plug in at the other end you can unplug them to test too
by Voltron
May 25 2019 12:51pm
Forum: E-Bike Technical
Topic: What is the advantage to a 19" front and 17" rear rim setup?
Replies: 9
Views: 321

Re: What is the advantage to a 19" front and 17" rear rim setup?

Off road the primary need is getting the front wheel over things and thru holes, so being able to wheelie over things is beneficial... That leans things towards bigger front wheel and smaller back. On pavement, it's the reverse.. no giant obstacles to get the front wheel thru, and tons of traction a...
by Voltron
May 25 2019 10:31am
Forum: Stand-up E-scooters and E-skateboards
Topic: Test The Brake Lever Switch help
Replies: 81
Views: 1388

Re: Test The Brake Lever Switch help

There should be no current with the brake released.
by Voltron
May 24 2019 4:39pm
Forum: Stand-up E-scooters and E-skateboards
Topic: Test The Brake Lever Switch help
Replies: 81
Views: 1388

Re: Test The Brake Lever Switch help

You should be able to test it right there, by poking the metal tabs with your meter... Just don't slip and bridge them together.
by Voltron
May 06 2019 11:57am
Forum: E-Bike General Discussion
Topic: hub motor identification
Replies: 4
Views: 195

Re: hub motor identification

Yup... And your logo picture is upside down...
by Voltron
May 05 2019 1:32pm
Forum: Motor Technology
Topic: Controller
Replies: 9
Views: 332

Re: Controller

If the labels are right, then yes it should make more power, and you should feel it unless the old controller was already driving the motor at saturation.... Is there a three speed plug coming out of the controller? If there is and it's not hooked up it defaults to medium power.
by Voltron
May 04 2019 1:11pm
Forum: E-Bike Technical
Topic: Rear aluminum dropouts bent
Replies: 15
Views: 578

Re: Rear aluminum dropouts bent

Was it actually installed like the picture implies, with the tabbed washer on the inside of the frame, with the tab not catching anything?
by Voltron
Apr 13 2019 12:21pm
Forum: E-Scooter and Motorcycle General Discussion
Topic: chinese e scooter missing battery pack
Replies: 24
Views: 984

Re: chinese e scooter missing battery pack

If the scooter comes on when the charger gets plugged in, then something is wrong with how the batteries are hooked up. Did you get the series connections right to where it's putting out the right pack voltage before it's connected to the controller? And it's not anything special having the charger ...
by Voltron
Mar 29 2019 5:13pm
Forum: Battery Technology
Topic: 18650 21s15p - 3 layers of 7s (balanced separately) advice
Replies: 29
Views: 1108

Re: 18650 21s15p - 3 layers of 7s (balanced separately) advice

The little slits make the electric current go thru the surface of the can more during spot welding, compared to no slit, for better penetration with less heating during assembly.
by Voltron
Mar 26 2019 7:10am
Forum: General Discussion
Topic: AWG amp rating chart, what about voltage?
Replies: 12
Views: 565

Re: AWG amp rating chart, what about voltage?

It does affect it. But they can't know what voltage you're going to run at. The point of using the chart is you need to know your system wattage. When you know that, you divide out your personal system voltage you'll be using to get the amps that will be flowing. Then you get the wire size you need ...
by Voltron
Mar 25 2019 10:55am
Forum: Battery Technology
Topic: Lead acid anyone?
Replies: 37
Views: 1239

Re: Lead acid anyone?

So much lead acid misinformation in one place! Some lead acid updates from the last decade.... While never matching lithiums power to weight, AGM (absorbed glass mat) lead acids have solved all the other complaints about lead. They can sit on a shelf for a year without self discharging or sulphating...
by Voltron
Mar 24 2019 1:30pm
Forum: Battery Technology
Topic: Lead acid anyone?
Replies: 37
Views: 1239

Re: Lead acid anyone?

Yep, when you need a reliable 2400 cranking amps lead still has a place, and also as a large cruising sailboat pack where fire safety is critical and you need some ballast anyway. That a Northstar AGM... super pure lead, virtually zero self discharge, and sent in matching serial number lots for clos...
by Voltron
Mar 23 2019 11:23am
Forum: E-Bike Technical
Topic: Rear Bafang hub motor speed hack?
Replies: 8
Views: 505

Re: Rear Bafang hub motor speed hack?

Does the controller have a pair of single, usually grey, wires that plug together?
by Voltron
Mar 05 2019 9:25am
Forum: E-Bike Build Threads / Photos & Video
Topic: Another "stelth bomber" build.
Replies: 32
Views: 2448

Re: Another "stelth bomber" build.

The fork steerer tube should stop about 4 or 5mm below the top of the plate if you're using direct mount stem... Not lower than the clamp bolt, but not flush with the top either.
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