Search found 1662 matches

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: 204

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: 36
Views: 1691

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: 1124

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

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


viewtopic.php?f=6&t=93510&hilit=Boston
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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: 1761
Views: 540864

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: 197

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: 64

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: 511

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: 4487

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: 511

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: 511

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: 511

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: 511

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.
by Voltron
Oct 27 2018 6:49pm
Forum: Battery Technology
Topic: Any advantage of one layout over the other?
Replies: 13
Views: 564

Re: Any advantage of one layout over the other?

The one on the right should be able to flow more amps with copper soldered along the final strip, as there's lower series resistance than the left, and both leads come out the same side which is sometimes a plus.
by Voltron
Oct 26 2018 6:27pm
Forum: General Discussion
Topic: Wire: Fine threads vs Course threads
Replies: 6
Views: 228

Re: Wire: Fine threads vs Course threads

Agree with the above, less strands=earlier fatigue failure.
by Voltron
Oct 22 2018 1:23pm
Forum: E-Bike General Discussion
Topic: Hub Motor Freewheel Misaligned
Replies: 7
Views: 214

Re: Hub Motor Freewheel Misaligned

Sorry... just watched the vid. Looks like the magnet ring is running pretty true, and the wobble isn't much worse than lots of cheap regular back wheels. The freewheel itself is prob fine which is part of the problem, where putting a new one on won't change things much. Its because the little stub s...
by Voltron
Oct 22 2018 11:30am
Forum: E-Bike General Discussion
Topic: Hub Motor Freewheel Misaligned
Replies: 7
Views: 214

Re: Hub Motor Freewheel Misaligned

Are you spinning it with the tire mounted? Thats usually where the wobble is.. but if no tire.. maybe it is a weird sideplate...
by Voltron
Oct 22 2018 10:44am
Forum: E-Bike General Discussion
Topic: Hub Motor Freewheel Misaligned
Replies: 7
Views: 214

Re: Hub Motor Freewheel Misaligned

Thats usually more due to out of balance rear wheels.... the slight wobble of the freewheel shouldn't be throwing the bike around.
by Voltron
Oct 22 2018 10:39am
Forum: E-Bike General Discussion
Topic: Backpedaling-how important it is for an ebike?
Replies: 11
Views: 456

Re: Backpedaling-how important it is for an ebike?

Just an fyi since it got brought up... theres a big difference in behavior depending on if the freewheel is rubbing the frame, and whether its internally seized up. The second one is the dangerous one, as when the freewheel is rubbing the frame, it still stops when coasting, even though you cant bac...
by Voltron
Oct 21 2018 5:27am
Forum: E-Bike Non-hub Motor Drives
Topic: 2 controllers on BBS02B experiment.
Replies: 7
Views: 279

Re: 2 controllers on BBS02B experiment.

Yeah.. By the time I built the custom harness with all the paralleled etc etc and then learned you had to go into the board and then opened up the controllers and realized they were fully potted on those particular ones... well... I realized everybody that it hadn't worked for in all the threads I s...
by Voltron
Oct 20 2018 3:06pm
Forum: E-Bike Non-hub Motor Drives
Topic: 2 controllers on BBS02B experiment.
Replies: 7
Views: 279

Re: 2 controllers on BBS02B experiment.

No is the simple answer.

Maybe if you do a bunch of special wiring that would take longer and be worse and cost more in time than just buying one bigger better controller is the less simple answer. :)
by Voltron
Oct 20 2018 2:52pm
Forum: General Discussion
Topic: Three Speed Overdrive Torque ripple?? [cyclone 3000]
Replies: 3
Views: 220

Re: Three Speed Overdrive Torque ripple?? [cyclone 3000]

If its the basic 3 socket female plug on the controller end, you can use a piece of wire or a bent paperclip jammed into the plug for testing. its usually the center and one of the two outside sockets... I've had mine paperclipped on high for years now. I don't think it will change the feel much tho...
by Voltron
Oct 19 2018 12:08pm
Forum: E-Bike Technical
Topic: Throttle Issue
Replies: 5
Views: 201

Re: Throttle Issue

Something in the Regen settings maybe? It's sometimes set to Regen automatically after the throttle is released for scooters, and maybe it doesn't know what to do after that?
by Voltron
Oct 19 2018 12:04pm
Forum: Battery Technology
Topic: Powering a 6KW system: 60V or 72V?
Replies: 12
Views: 464

Re: Powering a 6KW system: 60V or 72V?

It more depends on what your target top speed is.... Upping the voltage is great for getting a slow motor spinning up faster, but if you're already ok with the top speed, then focus on upping the amps for hill climb.
by Voltron
Oct 19 2018 2:52am
Forum: E-Bike Technical
Topic: PAS disable
Replies: 33
Views: 554

Re: PAS disable

But of course once you start hacking connectors and adding throttles you never know where it will lead... :)
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by Voltron
Oct 19 2018 2:40am
Forum: E-Bike Technical
Topic: PAS disable
Replies: 33
Views: 554

Re: PAS disable

I'll mention again it's sometimes worth just getting a new controller, even if it means ditching the display, PAS sensor, and everything except the motor and battery. Even it's it's hanging outside on zipties, and hacked together with redone plugs... The time sink and mental energy of figuring it ou...