Search found 1966 matches

by Voltron
Nov 26 2019 1:05pm
Forum: E-Bike Technical
Topic: hanging a battery
Replies: 11
Views: 1309

Re: hanging a battery

Full suspension and rear racks don't always go well together... And for actual off-road riding, having the battery weight that high and that far back really really kills the handling...

This is the kind of bike the OP was talking about btw.
2006 Kona Coiler.jpg
2006 Kona Coiler.jpg (378.11 KiB) Viewed 1069 times
by Voltron
Nov 25 2019 11:09am
Forum: General Discussion
Topic: Voilamart 1500w 26in rear hub install !
Replies: 13
Views: 1247

Re: Voilamart 1500w 26in rear hub install !

so much for stealth 8-) Yeah, there's no hiding that freakshow. But the ride is so fast and perfectly balanced that my eyes are glued forward and I forget real fast how it looks 👍 XShgunSoW5o Feel free to skip ahead if you don't love hypnotic back and forth s turns as much as I do, but the final mi...
by Voltron
Nov 24 2019 5:33pm
Forum: General Discussion
Topic: Voilamart 1500w 26in rear hub install !
Replies: 13
Views: 1247

Re: Voilamart 1500w 26in rear hub install !

Then there's this one for weekend fun... Modified Yuba Mundo cargo bike frame.
rolling heavy.jpg
rolling heavy.jpg (90.79 KiB) Viewed 1149 times
That one is fuuuuunnn.
by Voltron
Nov 24 2019 5:31pm
Forum: General Discussion
Topic: Voilamart 1500w 26in rear hub install !
Replies: 13
Views: 1247

Re: Voilamart 1500w 26in rear hub install !

The motor size is really the same... It's more of a controller side thing. My main ride is a recycled EV Global with modern battery, controller and motor... A giant plus was the dropouts are already deep enough for an ebike axle. IMG_20190222_122105.jpg That bike was made in 1998... That frame will ...
by Voltron
Nov 24 2019 2:58pm
Forum: E-Bike Technical
Topic: hanging a battery
Replies: 11
Views: 1309

Re: hanging a battery

Spine protector batteries are going to be a big market I think.. I personally didn't, but my battery was fairly flat.
by Voltron
Nov 24 2019 2:55pm
Forum: General Discussion
Topic: Voilamart 1500w 26in rear hub install !
Replies: 13
Views: 1247

Re: Voilamart 1500w 26in rear hub install !

I'm lucky enough to live somewhere slightly outdated 26 inch downhill frames are really common.. The right frame can save sooo much install time.
by Voltron
Nov 24 2019 1:25pm
Forum: General Discussion
Topic: Voilamart 1500w 26in rear hub install !
Replies: 13
Views: 1247

Re: Voilamart 1500w 26in rear hub install !

Hey, don't give up yet...I literally have two complete voilamart rear setups like that that I got given by a guy that gave up on installing them. It's real common that you have to hand file the dropout on a normal bike frame to get a motor axle to fit, or spread the frame a little to get a spacer in...
by Voltron
Nov 24 2019 12:53pm
Forum: E-Bike Technical
Topic: hanging a battery
Replies: 11
Views: 1309

Re: hanging a battery

On my Kona build, I just went with a backpack battery... It worked out great, less weight on the bike, and now I've used the same backpack on a bunch of different quickie builds. Getting the battery right turns out to be the hardest part of a home build, and on some I've realised after a couple of r...
by Voltron
Nov 24 2019 12:42pm
Forum: E-Bike General Discussion
Topic: How fast can my 250W chinese motor go?
Replies: 25
Views: 2099

Re: How fast can my 250W chinese motor go?

On flat ground, with an unlocked 72v 250watt controller (not that such a thing exists.. This is just hypothetical) you could go plenty fast.. It would just take forever to accelerate, and the speed would drop off like crazy on even tiny hills. It doesn't take much power for steady load speed until y...
by Voltron
Nov 24 2019 12:09pm
Forum: E-Bike General Discussion
Topic: Two questions on EVG 24v
Replies: 5
Views: 474

Re: Two questions on EVG 24v

Just throwing this out there, you'll realise soon an ebike is the best thing ever for what you want to do 😉, so if not totally strapped for cash try a test ride on a fat tire ebike... the 26 by 4 inch type. The big soft tires aired way down are very kind to muddy surfaces, and dont leave deep ruts l...
by Voltron
Nov 24 2019 12:01pm
Forum: E-Bike General Discussion
Topic: Two questions on EVG 24v
Replies: 5
Views: 474

Re: Two questions on EVG 24v

Re second motor, the easiest way is usually whole second controller and throttle, tied to the same battery if the amp rating is high enough so it doesn't melt down, or two separate batteries. Usually people go with a geared motor with a clutch in it, so it's freewheeling while not powered. Watch it ...
by Voltron
Nov 24 2019 11:53am
Forum: E-Bike General Discussion
Topic: Two questions on EVG 24v
Replies: 5
Views: 474

Re: Two questions on EVG 24v

Hi! Yes, like Dogman wrote, if it's cheap enough, get it and just scrap all the electronics. The frame is a great indestructible mule with a battery bay you can chuck lots of different shaped batteries into, and with modern waterproof electronics, you can get rid of the body panels that keep you fro...
by Voltron
Nov 24 2019 11:32am
Forum: General Discussion
Topic: Freewheel issue
Replies: 5
Views: 837

Re: Freewheel issue

They sell a couple of different thicknesses of these, one should fit without spreading the frame much, with the hook pointing out away from the freewheel. The one pictured is pretty thick, they also sell thinner ones. One consideration if you do use a washer, a regular round hole one isn't supported...
by Voltron
Nov 23 2019 6:38pm
Forum: E-Bike Technical
Topic: Can someone explain this to me?
Replies: 15
Views: 1726

Re: Can someone explain this to me?

The more and more powerful your controller becomes, the closer and closer it gets to being like just hooking the two battery leads together in a short circuit... Hundreds of amps can flow at peak if it's a big enough load. But the controller has no way of knowing what is supplying the power, or if i...
by Voltron
Nov 18 2019 11:59am
Forum: E-Bike General Discussion
Topic: Can someone double check my torque arm installation?
Replies: 15
Views: 1338

Re: Can someone double check my torque arm installation?

On a different note, is that as far as the axle goes into the dropouts? Usually you have to file a bit off the frame to get a hub motor axle up in there far enough, which you would want to do before going crazy on the perfect torque arm, as it might move the holes needed. Besides trying to pry open ...
by Voltron
Nov 18 2019 11:49am
Forum: E-Bike General Discussion
Topic: Can someone double check my torque arm installation?
Replies: 15
Views: 1338

Re: Can someone double check my torque arm installation?

I'd even consider sawing off the slotted section, and drilling a hole in the plate that's left... It really doesn't need that long of a lever arm when it's bolted to the frame, and with the 3d cast dropouts you have, you might even be able to cut it right to nestle in there nice and flat everywhere....
by Voltron
Nov 18 2019 11:35am
Forum: E-Bike General Discussion
Topic: Can someone double check my torque arm installation?
Replies: 15
Views: 1338

Re: Can someone double check my torque arm installation?

They'll all work, but if I could make it happen easy enough, I would ditch the second part of the arm, and try to find a place where it lines up with a bolt hole in the frame already (even if it means a little hammer therapy, the steel arm can take some pre deformation without failing), or drill one...
by Voltron
Nov 07 2019 1:00pm
Forum: E-Bike Technical
Topic: "Big Cat" Bafang 8fun 26" Fatbike "kit" Troubleshooting
Replies: 2
Views: 269

Re: "Big Cat" Bafang 8fun 26" Fatbike "kit" Troubleshooting

Total guessing, but if it's doing it at that exact speed, some controllers switch from sensored to sensorless after getting rolling, so maybe something going on there?
by Voltron
Nov 03 2019 9:13pm
Forum: Battery Technology
Topic: Lipo vs "deep cycle" marine battery capacity question
Replies: 26
Views: 1068

Re: Lipo vs "deep cycle" marine battery capacity question

You can get by with less ah on the lipo pack. Lead acid at high c rate loses a lot of usable capacity to the Peukert effect. Re deep cycle lead... It depends on whether you're talking about level of discharge, or rate of discharge. Deep cycle lead is built with thicker plates, which inhibits it's ab...
by Voltron
Nov 03 2019 6:16pm
Forum: E-Bike Technical
Topic: Need Help With Stuck Higo Connectors
Replies: 3
Views: 537

Re: Need Help With Stuck Higo Connectors

I would try contact cleaner first.. if it's pin corrosion jamming it, might wick in there better and be easier to clean up.
by Voltron
Nov 03 2019 3:29pm
Forum: Battery Technology
Topic: Common pack design mistakes, how to avoid?
Replies: 280
Views: 46287

Re: Common pack design mistakes, how to avoid?

And didn't mean to not give photo credit on those nice packs Tom. And I didn't say more buss bars are necessary. In a mass production pack, when saving a few cents on materials adds up over thousands of packs it might be a consideration, but I'll take overkill on conductivity any day... It sure isn'...
by Voltron
Nov 03 2019 3:20pm
Forum: Battery Technology
Topic: Common pack design mistakes, how to avoid?
Replies: 280
Views: 46287

Re: Common pack design mistakes, how to avoid?

You've got that backwards... Series provides the voltage, and more parallel lets you draw more amps.
by Voltron
Nov 02 2019 5:20pm
Forum: Battery Technology
Topic: Common pack design mistakes, how to avoid?
Replies: 280
Views: 46287

Re: Common pack design mistakes, how to avoid?

Yes... More buss bars are better... Some just skip the strips and do full sheets. The only downsides are more materials and time costs, but for a boutique battery designed to be abused, worth it.
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IMG_0573.JPG
IMG_0573.JPG (47.46 KiB) Viewed 1003 times
by Voltron
Nov 02 2019 12:35pm
Forum: E-Bike Technical
Topic: Cyclone Motor doesn't turn, (with 2000W KT Controller)
Replies: 3
Views: 517

Re: Cyclone Motor doesn't turn, (with 2000W KT Controller)

Yes.. It might be the color codes don't match. The white is usually a speed sensor and shouldn't stop it from working. You have to switch the bigger phase wires, and the corresponding Hall wires. Making an actual written chart of combos already tried helps a lot. I think with a Cyclone if it runs ba...