Search found 1675 matches

by Voltron
Jan 18 2019 11:46am
Forum: E-Bike Technical
Topic: How Many Amps 2 Pole Speakon Socket handle?
Replies: 9
Views: 155

Re: How Many Amps 2 Pole Speakon Socket handle?

No hard numbers, but prob enough for bike charging. Some of the Speakons are actually four wires inside, so worth checking.
by Voltron
Jan 15 2019 11:53am
Forum: E-Bike General Discussion
Topic: Converting folding bike to mid-drive, is it safe?
Replies: 3
Views: 158

Re: Converting folding bike to mid-drive, is it safe?

At your size, maybe one of the 26" wheel folders might ride better but still be storable.
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by Voltron
Jan 12 2019 12:33pm
Forum: Motor Technology
Topic: Waterproof your controller connectors on the cheap
Replies: 4
Views: 170

Re: Waterproof your controller connectors on the cheap

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.
by Voltron
Dec 21 2018 2:48pm
Forum: Battery Technology
Topic: 3s or 4s for 12v battery
Replies: 25
Views: 587

Re: 3s or 4s for 12v battery

Inverters turn DC into house voltage AC typically.
by Voltron
Dec 17 2018 11:25am
Forum: Battery Technology
Topic: Is better to charge the battery only to 80%?
Replies: 20
Views: 772

Re: Is better to charge the battery only to 80%?

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...
by Voltron
Dec 13 2018 4:05pm
Forum: E-Bike General Discussion
Topic: TROUBLESHOOT BAD BATTERY PACK
Replies: 6
Views: 221

Re: TROUBLESHOOT BAD BATTERY PACK

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...
by Voltron
Dec 12 2018 11:30am
Forum: Battery Technology
Topic: Alternative to soldering - How is this done?
Replies: 4
Views: 267

Re: Alternative to soldering - How is this done?

That one sort of has the look of ultrasonic welding. Like this one...
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by Voltron
Dec 10 2018 10:28am
Forum: General Discussion
Topic: Switching my shifters
Replies: 6
Views: 326

Re: Switching my shifters

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...
by Voltron
Dec 09 2018 3:20pm
Forum: E-Bike General Discussion
Topic: TROUBLESHOOT BAD BATTERY PACK
Replies: 6
Views: 221

Re: TROUBLESHOOT BAD BATTERY PACK

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.
by Voltron
Nov 27 2018 10:34pm
Forum: E-Bike Technical
Topic: Ford GoBike Bafang G320 BLDC motor wiring?
Replies: 2
Views: 114

Re: Ford GoBike Bafang G320 BLDC motor wiring?

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.
by Voltron
Nov 25 2018 5:12pm
Forum: Electric Watercraft
Topic: E-foil Foil Wing Design Discussion
Replies: 9
Views: 1330

Re: E-foil Foil Wing Design Discussion

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...
by Voltron
Nov 22 2018 11:33am
Forum: Electric Aircraft
Topic: First-ever plane with no moving parts
Replies: 15
Views: 540

Re: First-ever plane with no moving parts

They claimed 2.6 % efficiency in the article I read... So a ways to go on catching up to propellers.
by Voltron
Nov 14 2018 9:19am
Forum: Battery Technology
Topic: Taking prebuilt pack out of casing to fit in smaller space?
Replies: 10
Views: 337

Re: Taking prebuilt pack out of casing to fit in smaller space?

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...
by Voltron
Nov 11 2018 1:19pm
Forum: E-Scooter and Motorcycle General Discussion
Topic: Motorbike Conversion - 1985 Nighthawk 750S - From Junk
Replies: 38
Views: 2404

Re: Motorbike Conversion - 1985 Nighthawk 750S - From Junk

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...
by Voltron
Nov 10 2018 1:15pm
Forum: Battery Technology
Topic: Anyone actually used the Boston Power 5300mAh cells?
Replies: 17
Views: 1371

Re: Anyone actually used the Boston Power 5300mAh cells?

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


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by Voltron
Nov 06 2018 10:23pm
Forum: E-Bike Build Threads / Photos & Video
Topic: Your Creation's Before & After Pics
Replies: 1767
Views: 553623

Re: Your Creation's Before & After Pics

Functionality has an aesthetic all it's own... But there's many traditionally beautiful gems lurking in there too.
by Voltron
Nov 04 2018 3:31am
Forum: General Discussion
Topic: 18650 golf cart battery build (14s40p)
Replies: 5
Views: 435

Re: 18650 golf cart battery build (14s40p)

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...
by Voltron
Nov 02 2018 9:50pm
Forum: Items Wanted
Topic: Charger for Pedego
Replies: 1
Views: 125

Re: Charger for Pedego

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.
by Voltron
Oct 31 2018 1:29pm
Forum: E-Bike General Discussion
Topic: Secure Braking
Replies: 36
Views: 748

Re: Secure Braking

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.
by Voltron
Oct 31 2018 11:06am
Forum: E-Bike General Discussion
Topic: Loving the ebike life but wishing for a full suspension bike...
Replies: 149
Views: 6191

Re: Loving the ebike life but wishing for a full suspension bike...

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 ...
by Voltron
Oct 31 2018 10:50am
Forum: E-Bike General Discussion
Topic: Secure Braking
Replies: 36
Views: 748

Re: Secure Braking

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...
by Voltron
Oct 31 2018 1:25am
Forum: E-Bike General Discussion
Topic: Secure Braking
Replies: 36
Views: 748

Re: Secure Braking

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?
by Voltron
Oct 31 2018 1:18am
Forum: E-Bike General Discussion
Topic: Secure Braking
Replies: 36
Views: 748

Re: Secure Braking

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.
by Voltron
Oct 30 2018 10:12pm
Forum: E-Bike General Discussion
Topic: Secure Braking
Replies: 36
Views: 748

Re: Secure Braking

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.