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by dogman dan
May 21 2019 6:46am
Forum: E-Bike General Discussion
Topic: Is it worth it?
Replies: 8
Views: 254

Re: Is it worth it?

Get a motorcycle to go that fast. Or at least, if you have not already, start running motorcycle/moped tires and rims. Its not that I dont get it. I do. That bike is very light, and feels different than a heavier motorcycle. Its that you can ride much funner with a motorcycle that goes 90 mph, havin...
by dogman dan
May 21 2019 6:32am
Forum: Battery Technology
Topic: Calling all battery surgeons! Have you seen this?
Replies: 21
Views: 387

Re: Calling all battery surgeons! Have you seen this?

Till you do chase this down, I hope you are charging it outside. Sounds like if you do have a problem, it could lead to an overcharged cell to the point the pack catches fire. Perhaps the bms did stop the charge, before fire, but then failed to discharge the group back to 4.2v? Id be seriously keepi...
by dogman dan
May 17 2019 9:34am
Forum: E-Bike Technical
Topic: wiring SNAFU (or short between the earlobes)?
Replies: 3
Views: 127

Re: wiring SNAFU (or short between the earlobes)?

Yeah, the spark is normal, as I'm sure you knew. But it sure got you going when the controller would not run. :mrgreen:

That e lock wire is usually there, but its a smaller red wire, often on the same plug. That orange wire would have fooled me too.
by dogman dan
May 17 2019 9:28am
Forum: E-Bike Technical
Topic: Very intermittent power
Replies: 6
Views: 146

Re: Very intermittent power

Its bad connections 99,9% of the time. The hours waiting is not doing anything. Its just randomly getting a poor connection back later on. Don't get me wrong though, controller could be toast, or throttle, so after you go through the wiring very closely, if it does not fix it, start doing some diagn...
by dogman dan
May 17 2019 9:08am
Forum: E-Bike General Discussion
Topic: 12 turn Hub-motor vs Mid-drive for hill climbing ??
Replies: 20
Views: 715

Re: 12 turn Hub-motor vs Mid-drive for hill climbing ??

Well, I can report that a bike and rider weight of 400 pounds, up 5% grade, melted down a 10 turn 5-1 geared motor easily. I did the testing for EBK, so they could state the limits of their motor warranty. So for that firewood, it would be more efficient to run a mid drive, than waste enough energy ...
by dogman dan
May 17 2019 8:39am
Forum: E-Bike General Discussion
Topic: Help me to create my solar panel trike with caravan trailer
Replies: 70
Views: 796

Re: Help me to create my solar panel trike with caravan trailer

You still want it all. You cant' have it. Yes, you can get speed with 72v instead of 48v. But you can't ride that thing 40 mph towing a huge trailer. You'll wreck. So you DONT WANT that speed. Wrecking in Mongolia will really f--c up your trip. And anyway, you'll blow all your battery capacity in 30...
by dogman dan
May 17 2019 8:22am
Forum: Battery Technology
Topic: Is it safe to seal batteries in a waterproof plastic food container?
Replies: 22
Views: 462

Re: Is it safe to seal batteries in a waterproof plastic food container?

Bottom line in my opinion, if heat on charging or discharging is a problem, your problem is not that the battery is in a pelican case, or a Tupperware. If its that hot, then you have a big safety problem all right, and nothing will make it safe if your charging and discharging is making it too hot t...
by dogman dan
May 17 2019 8:12am
Forum: General Discussion
Topic: Retirement Time
Replies: 216
Views: 17827

Re: Retirement Time

Been up at the lake on the Rio Grande this week kayaking, and the el nino runoff is spectacular this year. The lake went from 3% to 20% full in about three weeks. Its rising at a foot a day on the beach I'm at. In my dreams the lake would get to 50% this year, but it looks actually possible. In the ...
by dogman dan
May 17 2019 8:02am
Forum: General Discussion
Topic: Specialized levo 2017 500w ebike
Replies: 6
Views: 137

Re: Specialized levo 2017 500w ebike

A larger bike shop that sells specialized bikes might have the leverage with the supplier you need. But you'd need to have them like you first. Most of us here at ES, would just run the battery naked, or fix it to run another bike. that sort of thing easy for us that have lots of experience. For you...
by dogman dan
May 17 2019 7:46am
Forum: General Discussion
Topic: fat bike fork on non fat bike
Replies: 8
Views: 528

Re: fat bike fork on non fat bike

Main thing would be the type of head tube/ headset your bike has. You'd need the same type. there are three actually, with older, and or cheaper bikes still using 1" straight headset, higher quality bikes less than 20 years old have 1 1/8 in general, and high dollar bikes now using the tapered heads...
by dogman dan
May 17 2019 7:33am
Forum: General Discussion
Topic: ...And that's why I don't like Intersections....
Replies: 10
Views: 747

Re: ...And that's why I don't like Intersections....

I also like being the first vehicle in the intersection, first off, after a good hard look all three ways, and then ride with some space on the motorcycle, or car. On bikes and e bikes, I ride a bit different. I really prefer to be last through the light, and will hang back in a bike lane till all t...
by dogman dan
May 15 2019 7:08am
Forum: E-Bike General Discussion
Topic: Inter-Bike Communication
Replies: 8
Views: 208

Re: Inter-Bike Communication

Just follow her.
by dogman dan
May 15 2019 7:00am
Forum: E-Bike General Discussion
Topic: 36v vs. 48v Range Question.
Replies: 8
Views: 253

Re: 36v vs. 48v Range Question.

If you ride the same, same speed, same pedaling, same weather, etc, you can ride the 48v motor quite efficiently. Same energy used. But often, you will ride faster, take off from stops faster, and use more. Your choice to ride different, or not. I often ride a 2000w 48v bike, which uses a very heavy...
by dogman dan
May 15 2019 6:49am
Forum: E-Bike General Discussion
Topic: Buying e-bike with kaput hub motor - help!
Replies: 16
Views: 295

Re: Buying e-bike with kaput hub motor - help!

Real bad, if the battery holds 56v, but has 1/10 ah capacity. Used batteries are worth zero dollars, until tested for capacity under load. If you pay a hundo for the bike, and get a good charger, I suppose you got good enough deal. But really, 50 bucks is my top price for a non working e bike, unles...
by dogman dan
May 13 2019 7:46am
Forum: Battery Technology
Topic: Battery with this type of port help please
Replies: 6
Views: 176

Re: Battery with this type of port help please

Just keep making it smaller till its small enough to post the picture.


FWIW, I don't even try to take pictures for here with a 10 megapixel camera. Set it to 1 mp for here. Next time I mean, we know what connector you have now.
by dogman dan
May 13 2019 7:44am
Forum: E-Bike Technical
Topic: wheel diameter in display
Replies: 2
Views: 76

Re: wheel diameter in display

Depends on the display. If it gives you choices of rim diameter, you need to put in a larger rim in your display to get close to reality for a fat tire bike. Its got a big tire.
by dogman dan
May 13 2019 7:42am
Forum: E-Bike Technical
Topic: Motor weak power
Replies: 26
Views: 482

Re: Motor weak power

I have a suspicion that your problem is quite simple. Your new controller is defective. But before you complain to the vendor, do what you can to see if you can change any settings on the display. You might be just stuck in power level one or something, because they sent you a display that reverts t...
by dogman dan
May 13 2019 7:35am
Forum: E-Bike Technical
Topic: Rated power ?
Replies: 26
Views: 471

Re: Rated power ?

To get your 20, you do need 52v. Sorry if reality sucks. Do confirm your speed read out is accurate, like ride with a car going exactly 20 mph, or check your distance read out with a very accurately measured km or mile. You might be on the correct wheel setting, but have a tire that makes that inacc...
by dogman dan
May 13 2019 7:32am
Forum: E-Bike General Discussion
Topic: Geared VS Direct Drive: Pros & Cons?
Replies: 18
Views: 532

Re: Geared VS Direct Drive: Pros & Cons?

I like my states law a lot. Ebikes don't exist, all are mopeds. But nobody cares if you ride it on the trails that allow bikes, with reasonable courtesy. But it also means I can run up to 30 mph legal, and have as much power as I like. My bikes exceed class 3, and are completely street legal.
by dogman dan
May 13 2019 7:18am
Forum: E-Bike General Discussion
Topic: Help me to create my solar panel trike with caravan trailer
Replies: 70
Views: 796

Re: Help me to create my solar panel trike with caravan trailer

I always need a math check, but that was what I meant to say. I think I was taking 58v x4 to get 240w. 1 200w panel at 12v is same as 4 50w panels connected in series to make 48v. Both put out the same 200w. On a bright day at noon in the desert, I would not be surprised if I got 240w for an hour or...
by dogman dan
May 13 2019 7:12am
Forum: E-Bike General Discussion
Topic: Juicing Up Pictures
Replies: 19
Views: 892

Re: Juicing Up Pictures

When I toured, and always needed to find a hot plug, I carried a little led night light to test them. It was often hard to find a plug out here in the west. New buildings have zero outside plugs in general. Or, they have two ice coolers and two coke machines using up all the plugs, along with you ca...
by dogman dan
May 13 2019 7:05am
Forum: E-Bike General Discussion
Topic: Luna Wolf Battery mount mod
Replies: 6
Views: 193

Re: Luna Wolf Battery mount mod

That's a great idea. I just found the wolf mount to be amazingly trustworthy. But I did have an tiny bit of initial problem. In my case, I was mounting it on a wooden rear deck. The flange on the battery is a bit long, and that meant that on the first try, the magnet was not fully contacting the bot...
by dogman dan
May 13 2019 6:55am
Forum: E-Bike General Discussion
Topic: Ebike vs Escooter
Replies: 6
Views: 257

Re: Ebike vs Escooter

Pick the best tool for each job I always say. Along with you can never have too many tools. But yeah, why not unless cost is the deterrent? For some things, ideal to pop in in the trunk of any car however small, and have some wheels wherever you go. Sure, the bike would work too, but it may just be ...
by dogman dan
May 13 2019 6:51am
Forum: E-Bike General Discussion
Topic: What hub motor is this
Replies: 4
Views: 201

Re: What hub motor is this

Picture of the whole motor might help. We could then tell by the look of it if its a geared motor or direct drive.

But its clearly a small motor, looks like 200w rated. If only two wires come out of it, then its brushed. If three large power wires come out, its a brushless.
by dogman dan
May 11 2019 7:23am
Forum: E-Bike General Discussion
Topic: Help me to create my solar panel trike with caravan trailer
Replies: 70
Views: 796

Re: Help me to create my solar panel trike with caravan trailer

300w is a lot of panel in area. It can be done to carry a lot of panel area, but it gets more and more expensive, AND, it gets very hard to ride into any wind if you put a huge roof on your trike. My idea was to make my trailer 8 foot long, and 30 inches wide, and a foot or less deep. It could possi...