Search found 33956 matches

by dogman dan
Nov 21 2018 9:58am
Forum: E-Bike General Discussion
Topic: Where to buy geared rear hub motor kit?
Replies: 14
Views: 1109

Re: Where to buy geared rear hub motor kit?

Again, fine to run the ebikeling 350w rated motor on 1000w, but not up big ass hills if your ass is big. Cool they show in stock. Cooler if they are. ( good enough if they are just in US customs at the moment) Those smaller geared motors are great, do fine for most people. Just not the big guy towin...
by dogman dan
Nov 21 2018 9:56am
Forum: E-Bike General Discussion
Topic: Battery protection in the cold
Replies: 5
Views: 172

Re: Battery protection in the cold

Just leaving a warm garage will often do the trick, the with enough discharge rate, the battery will make heat. Just depends on how good a heat sink your battery box is. I was having trouble because I built my box for summer, making it a nice aluminum plate heat sink for the lipos. Not so great in w...
by dogman dan
Nov 20 2018 8:02am
Forum: E-Bike Technical
Topic: A portable gasoline generator for long range
Replies: 28
Views: 538

Re: A portable gasoline generator for long range

Got to agree with the get a motorcycle idea. I gave up the idea of really long range e biking, and got a 400cc scooter. FWIW, because I'm a safe bet for insurance, (old fart) including insurance its only costing me about 15 cents a mile. That's just about half the cost per mile of my 80 mile range e...
by dogman dan
Nov 20 2018 7:48am
Forum: E-Bike General Discussion
Topic: Rayvolt Cruzer upgrades help
Replies: 2
Views: 78

Re: Rayvolt Cruzer upgrades help

Screw PAS with that bike. Just learn to use the throttle right. Pick a gear, pedal in that gear, bring up throttle to make that pedaling easy. PAS can't react as fast as your brain and hand can, to keep the effort level. Just don't death grip the throttle, preferably a half twist, and you can ride a...
by dogman dan
Nov 20 2018 7:34am
Forum: E-Bike General Discussion
Topic: Where to buy geared rear hub motor kit?
Replies: 14
Views: 1109

Re: Where to buy geared rear hub motor kit?

Typically harder to find a real cheap deal on the 500w rated geared motor kits. These are the ones able to handle up to 1500w if you push them. The 350w kit can be found cheap, but often only in front hub for that cheap. Those are a bit weak if you are heavy, or worse, heavy and have a steep hill. T...
by dogman dan
Nov 20 2018 7:22am
Forum: E-Bike General Discussion
Topic: Battery protection in the cold
Replies: 5
Views: 172

Re: Battery protection in the cold

The battery will often heat itself in the cold, so insulation is the main thing. My worst cold performance was when using a tight metal box to hold not so great lipos. So they would start out from the home ok, then sag like hell after a short ride in the snow chilled them enough. Another time I had ...
by dogman dan
Nov 16 2018 6:26pm
Forum: General Discussion
Topic: List of small hatchback cars
Replies: 88
Views: 2005

Re: List of small hatchback cars

how a car fits IS important. the wifes focus cars always made my back hurt, both of em. I'm taller, so I saw out of them fine. But the foresters have been the car that fits me best. No back hurts with those seats. Van has the best seats though, long as gas stays below three bucks its now the choice ...
by dogman dan
Nov 16 2018 10:02am
Forum: E-Bike Technical
Topic: Top speed limited or torque-speed trade off?
Replies: 14
Views: 402

Re: Top speed limited or torque-speed trade off?

Your no load speed tells me you most likely have a slower wound motor. 350 at 48v is not killer slow, but its not the fast motor for sure. Sounds to me like a 7 turn, vs the 30 mph 6 turn. Maybe even an 8 turn, though they are rare. More speed at 48v is unlikely IMO. But the good news is it will mak...
by dogman dan
Nov 16 2018 9:55am
Forum: E-Bike Technical
Topic: mid drive+geared hub motor - same battery?
Replies: 2
Views: 74

Re: mid drive+geared hub motor - same battery?

the battery would have to be very powerful, to handle the amps of two motors. Also, the torque of the mid drive could shear the cover off the rear motor, at the gears.

But the answer is yes, with some caveats.


If you want a motorcycle, buy a strong battery, and a big ass rear direct drive motor.
by dogman dan
Nov 16 2018 9:51am
Forum: E-Bike Technical
Topic: A portable gasoline generator for long range
Replies: 28
Views: 538

Re: A portable gasoline generator for long range

Pretty much limited to the 2 stroke 800w generators like harbor freights tailgator. Loud, stinky, and still fairly heavy, about 30 pounds. 30 pounds of battery will take you a LONG way, but it is small enough to drag along in a trailer if you are going where there are no plugs at all. Good little ge...
by dogman dan
Nov 16 2018 9:35am
Forum: E-Bike General Discussion
Topic: Black Friday Sales ?
Replies: 6
Views: 455

Re: Black Friday Sales ?

Just missed a 25% off sale at EBK. Likely that offer was just for those on their e mail list. There may be more sales, till he's sold out enough stock to close out the year. But certain things may go out of stock, particularly certain sizes of battery, soon. That's been the typical pattern. I don't ...
by dogman dan
Nov 16 2018 9:29am
Forum: E-Bike General Discussion
Topic: Carbon frame road bike - help required with 250W motor selection.
Replies: 5
Views: 139

Re: Carbon frame road bike - help required with 250W motor selection.

Bullet proof way to not fry a 250w hub motor up a killer hill is not do it. Otherwise, you could do a temp overheat switch like the Heinsmanns had. Overheating inside the motor opens the switch would turn off the throttle. Saves your motor, leaving you pedaling up the hill, since you chose too weak ...
by dogman dan
Nov 16 2018 9:22am
Forum: E-Bike General Discussion
Topic: Sparks flying: are my battery or charger damaged? Please help
Replies: 8
Views: 259

Re: Sparks flying: are my battery or charger damaged? Please help

Sounds to me like maybe there is a real short in the charger. Or they reversed polarity when they built the charger. Look at the charger first, plug it in, and see if the inner part of the plug is positive. it should have been. That assumes of course the charger is not fried. With luck, your battery...
by dogman dan
Nov 16 2018 9:14am
Forum: E-Bike General Discussion
Topic: Hub Motors for Cargo Bikes
Replies: 78
Views: 5909

Re: Hub Motors for Cargo Bikes

Love what you did. That chain line problem is why the batteries were mounted so high in back on my custom cargo bike. The one that burned. Finished cargo mixte..jpg In highest gear, the chain would scrape slightly on the bottom of the battery tray. I should have made it a half inch higher. In front,...
by dogman dan
Nov 16 2018 9:08am
Forum: E-Bike General Discussion
Topic: Test speed controller while awaiting throttle
Replies: 9
Views: 154

Re: Test speed controller while awaiting throttle

Well, starting to suspect you hammered that controller to death. Easy test without a throttle is this. Lick fingers, grab positive and and 5v return wires with wet finger. should resist enough to prevent a full throttle but run it. touch the two to each other would give you full throttle of course.
by dogman dan
Nov 16 2018 8:32am
Forum: General Discussion
Topic: Motor Burn Up at 32AMAX
Replies: 23
Views: 520

Re: Motor Burn Up at 32AMAX

To put it more simply, put 32 amps into that Ezee, and it wants to go a pretty high rpm. Prevent that from happening, with a loaded trailer and a steep hill, and what happens is the excess current turns your coils into a space heater. The lower the RPM, the more of your 1500w turns into heat. Again ...
by dogman dan
Nov 16 2018 8:09am
Forum: General Discussion
Topic: Successful ebike builds.
Replies: 20
Views: 852

Re: Successful ebike builds.

Whats the matter, you don't want to spend the next 3 years reading ES spew? Oh well, we did. :lol: Lots of build threads in here, but they are put almost randomly where the author put them. Anywhere in the E bike section, but the longest most detailed older build threads tend to be in E bike technic...
by dogman dan
Nov 16 2018 7:57am
Forum: General Discussion
Topic: List of small hatchback cars
Replies: 88
Views: 2005

Re: List of small hatchback cars

Let us know how you like the fit. I was real interested in them for awhile, to replace the wifes focus. Ended up replacing that focus that burned with a v8 half ton van. :roll: :lol: Two saint bernards fit in it much better than a fit, which would not I think, fit somebody that is 6 foot 4. Two buck...
by dogman dan
Nov 14 2018 9:06am
Forum: E-Bike General Discussion
Topic: Battery Shipping USA to New Zealand
Replies: 3
Views: 128

Re: Battery Shipping USA to New Zealand

Sell em here in the US, pickup only.
by dogman dan
Nov 14 2018 8:58am
Forum: E-Bike General Discussion
Topic: Tiny hub motor sucking the life out of my batteries.
Replies: 11
Views: 420

Re: Tiny hub motor sucking the life out of my batteries.

Well, all we can do it guess some shit. One,, your battery will die faster in winter, even new. And its not new at all. Its about when you expect it to die. So guess one is that the battery is more than half your problem. Yeah, it was perky last summer, that was then. this is now. I suspect that whe...
by dogman dan
Nov 08 2018 10:26am
Forum: E-Bike General Discussion
Topic: Is an e-bike defined as a recreational vehicle?
Replies: 23
Views: 728

Re: Is an e-bike defined as a recreational vehicle?

Amusing thread guys. One thing to remember is the enforcement of the laws depends a great deal on if you ride like a dick or not. I've been cruising posted no motors of any kind trails, and mup's for ten years now. Only one major problem, was with guys that thought all bikes were not allowed. Cops h...
by dogman dan
Nov 08 2018 10:08am
Forum: General Discussion
Topic: List of small hatchback cars
Replies: 88
Views: 2005

Re: List of small hatchback cars

Most of the choices are fine, though I would not pick the fiat, unless it was a crazy good deal. Hatchback for the win btw, or a full van. Haven't owned a car with a trunk since the 64 falcon. My wife loves her focuses, but believe me, you DO NOT want to wrench on one. We spend 700 bucks to replace ...
by dogman dan
Nov 08 2018 9:55am
Forum: General Discussion
Topic: WATT METERs be RAIN PROOF?
Replies: 3
Views: 220

Re: WATT METERs be RAIN PROOF?

Bear in mind the inventor of the CA lives in Seattle. Nothing is ever completely water proof unless dive rated, and I cannot recommend leaving e bikes outside in the rain regularly without covering some stuff. But riding in the rain with a CA is no problem at all. Same with many of the more modern d...
by dogman dan
Nov 03 2018 7:03am
Forum: E-Bike General Discussion
Topic: E-bike Generator Challenge
Replies: 22
Views: 571

Re: E-bike Generator Challenge

The limited efficiency is still worth it, in specific applications. Example, pedal your e bike to charge a small house battery, that gives you one light at night, and charges your cell phone or other small battery devices. This works well in the third world, where house power might not exist at all,...
by dogman dan
Nov 03 2018 6:53am
Forum: Battery Technology
Topic: DIY Lipo Pack - Running different voltages in parallel?
Replies: 2
Views: 153

Re: DIY Lipo Pack - Running different voltages in parallel?

To parallel two batteries, they MUST be the same voltage. Same number of cells, and close to the same state of charge. Best way to do this is never make the connection till both are full. So your two packs will have to run one, then unplug, and plug in the other to discharge it. It might blow your c...