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by dogman dan
May 28 2020 7:08am
Forum: E-Bike General Discussion
Topic: Would like to make an eTrike less prone to tipping over
Replies: 30
Views: 441

Re: Would like to make an eTrike less prone to tipping over

Agree with that. Just haven't seen too many deltas with very low CG. So in general, the tadpoles tend to have the lowest seat, and lowest CG. It could be just that alone that makes them more stable at speed. I honestly never rode tadpoles enough to tell you if they also have the problem of jinking a...
by dogman dan
May 26 2020 7:35am
Forum: E-Bike General Discussion
Topic: Finalizing my build, a couple questions.
Replies: 11
Views: 397

Re: Finalizing my build, a couple questions.

Yeah, that seatpost is likely set too high. Won't break at the bend, but the frame itself may crack at the top, if not enough post is inside the frame. Mount that shark battery under the top tube. Perfect center weight, doesn't matter if its not on the downtube, just put that weight in the center. S...
by dogman dan
May 26 2020 7:31am
Forum: E-Bike General Discussion
Topic: controller inside motor?
Replies: 3
Views: 93

Re: controller inside motor?

It can be an ok idea to have the controller inside, where its dry.. But in reality, its easy for motors to ingest water vapor, which then condenses over night. In some really rainy climates, the motor actually fills up, then one winter day, freezes and won't turn. So there goes the one reason it cou...
by dogman dan
May 25 2020 6:49am
Forum: E-Bike Technical
Topic: 2wd hub motor build
Replies: 9
Views: 255

Re: 2wd hub motor build

The flaw in your original plan is this. No matter how powerful your motors are, they will run horribly in efficient, and possibly overheat if you run slower than about 15 mph, heavily loaded, up those hills. Sure, the build will do em at 22 mph, so no problem. WRONG. Unless you are on nice graded ro...
by dogman dan
May 25 2020 6:35am
Forum: E-Bike General Discussion
Topic: Anyone know any hacks for this 48v 1000w kit I got on amazon
Replies: 6
Views: 143

Re: Anyone know any hacks for this 48v 1000w kit I got on amazon

Shunt mod would get you to a faster 0-30 mph, but not a whole lot more top speed. And it would hurt your battery more too, which might not be worth it. The traditional 'hack" for that size motor, is to put it on 72v, with a 40 amps controller. New controller, and new, different type battery that is ...
by dogman dan
May 24 2020 6:00am
Forum: E-Bike General Discussion
Topic: Geared hub fat bike.
Replies: 12
Views: 314

Re: Geared hub fat bike.

Not cheap, but one US vendor that has a geared rear motor for a fat bike is e bike kit. https://www.ebikekit.com/collections/specialty-kits/products/e-bikekit-for-sunseeker-fat-tad The kit linked is a 20" wheel. Just call them up, and ask for it laced to 26" They will work with you on what you want....
by dogman dan
May 23 2020 6:13am
Forum: E-Bike Technical
Topic: Lightest and most compact E-Bike charger 14s(DIY GaN charger research)
Replies: 6
Views: 192

Re: Lightest and most compact E-Bike charger 14s(DIY GaN charger research)

Yeah, you need to do better than a huge, heavy, 1000w charger. But three like you have now is a bit of a pain to carry around. It would be very hard to beat a satiator for a long tour. Decent wattage, but not so likely to pop a heavily loaded plug at some convenience/ gas store. But most importantly...
by dogman dan
May 23 2020 6:02am
Forum: E-Bike General Discussion
Topic: Fast long-range cheap tourer[emoji2]
Replies: 25
Views: 706

Re: Fast long-range cheap tourer[emoji2]

Nicely done though, keeping all the weight in the middle. On a really long ride, I'm no so sure I'd like that top of the bar battery much, but I suppose it only bothers you when you actually stop. So better than on a commuter. It would handle almost as well, if that second battery could be two small...
by dogman dan
May 23 2020 5:52am
Forum: Battery Technology
Topic: Creative Cooling Ideas?
Replies: 41
Views: 806

Re: Creative Cooling Ideas?

If you are running them that hard, you would just about need a heat sink between each cell. I mean a sheet of aluminum sandwiched in the pack between each foil pouch. Then perhaps run water cooling in contact with each heat sink. On the other hand, if you run shit that hard, its kind of a racing dea...
by dogman dan
May 23 2020 5:46am
Forum: General Discussion
Topic: Suggest someone other than Hobbyking
Replies: 46
Views: 921

Re: Suggest someone other than Hobbyking

Not sure about shipping from them to Canada, but Buddy RC used to be where I got all my wire, connectors, and such. More for getting it quick than for price, but back then the prices were not too bad there either.
by dogman dan
May 20 2020 6:58pm
Forum: E-Bike General Discussion
Topic: Cheap ebike kit for paragliding retrieve
Replies: 12
Views: 326

Re: Cheap ebike kit for paragliding retrieve

Agree with that. An inexpensive rear motor kit on a decent, but old bike will do. Spend the battery though.
by dogman dan
May 20 2020 6:41pm
Forum: E-Bike General Discussion
Topic: Would like to make an eTrike less prone to tipping over
Replies: 30
Views: 441

Re: Would like to make an eTrike less prone to tipping over

Well, there is the option of mastering the two wheel turn on one. not for everybody. Best advice on those trikes is buy the kit designed especially for them, which is sold by E-Bikekit. Its a slow wind motor, which gives the kit what you need, slow. 15 mph top speed, which is about as fast as you ca...
by dogman dan
May 20 2020 6:11am
Forum: E-Bike Technical
Topic: Help! Best conversion kit for GF 29er Full-Suspension bike?
Replies: 4
Views: 99

Re: Help! Best conversion kit for GF 29er Full-Suspension bike?

Hmm, to solve some of those problems I've had with off road e bikes for more than a decade, I just bought a honda. Its nice, to have better float in deep sand. The honda climbs hills that have melted motors on my e bikes. And I can ride it for several hours before the gas is gone. The e bike runs ou...
by dogman dan
May 20 2020 6:01am
Forum: E-Bike General Discussion
Topic: 2 wheel drive ebike with self charging
Replies: 14
Views: 323

Re: 2 wheel drive ebike with self charging

Re reading his original post, he could use a voltage converter to bump his voltage up, increasing his potential speed. The thing would make heat though, reducing his total usable watt hours, and then of course his wind drag at higher speed would cost him even more range. I'm not generally a negative...
by dogman dan
May 20 2020 5:52am
Forum: E-Bike General Discussion
Topic: Lesson learned in coiling motor power bundle
Replies: 5
Views: 149

Re: Lesson learned in coiling motor power bundle

So, you just ignored the part where I said you melted the plug, while running too much load up too steep hills. You cant see that damage, which then got even hotter as the contact got worse and worse. hell yeah, the whole wire got hot. Hotter near the problem too, which was inside the plug. That mel...
by dogman dan
May 19 2020 6:04am
Forum: E-Bike General Discussion
Topic: Fast long-range cheap tourer[emoji2]
Replies: 25
Views: 706

Re: Fast long-range cheap tourer[emoji2]

Long range e bikes essentially are trucks. Even more so, if you are carrying or towing the camping gear. But you can ride a long ride, a bit slower like you just concluded, on a fairly normaly loaded commuter. Start with a good frame bag, ( I really liked EM3ev's one) and pack it with at least 48v 2...
by dogman dan
May 19 2020 5:49am
Forum: E-Bike General Discussion
Topic: Ooh, the choice paralysis of DIYing
Replies: 12
Views: 341

Re: Ooh, the choice paralysis of DIYing

By all means, don't get paralyzed, just buy stuff as you can afford it, and keep building DIY. Its so fun! While I was pretty broke for a decade or so, I just kept sinking my tiny fun budget into it. That budget started out at the cost of a tank of gas a week, plus car repairs on a wore out, nearly ...
by dogman dan
May 19 2020 5:45am
Forum: E-Bike General Discussion
Topic: 2 wheel drive ebike with self charging
Replies: 14
Views: 323

Re: 2 wheel drive ebike with self charging

The really impossible thing he asked for, is the motor has little or no drag. Sure, if its not in regen, and going slow enough, drag is low. But at faster rpm, and regen engaged, its going to feel like he's towing a few anvils. That drag, that's the catch 22 that makes it a perpetual motion idea. if...
by dogman dan
May 19 2020 5:41am
Forum: E-Bike General Discussion
Topic: Newbie needs advice on ebike kit please.
Replies: 13
Views: 272

Re: Newbie needs advice on ebike kit please.

You only need about 1000w, typical of 48 or 52v kits to go as fast as you ask for. For you, while a larger motor could be great fun, you simply don't need to have that much extra weight aboard. The bigger motors are for small motorcycle type performance, or towing trailers, or if you weigh 350 pound...
by dogman dan
May 18 2020 6:56am
Forum: E-Bike General Discussion
Topic: Fast long-range cheap tourer[emoji2]
Replies: 25
Views: 706

Re: Fast long-range cheap tourer[emoji2]

Yeah, pick two. Here's what worked great for me. Not the only choice, but similar to the choice of two people who rode tours of many thousand miles. Big hub motor, in my case an old crystalyte, capable of 3000w easy. I ran it on 52v, for a 30 mph ish top speed, what you are asking for more or less. ...
by dogman dan
May 18 2020 6:42am
Forum: E-Bike General Discussion
Topic: Lesson learned in coiling motor power bundle
Replies: 5
Views: 149

Re: Lesson learned in coiling motor power bundle

What that looks like to me, is the plug failed. Its getting excessively hot inside due to a poor connection buried inside. Then the coiling, it caused the outer sheath to melt on the wire. The hot part was not the wire sheath, it was the plug. The poor connections could have been caused by running w...
by dogman dan
May 18 2020 6:39am
Forum: E-Bike General Discussion
Topic: Ooh, the choice paralysis of DIYing
Replies: 12
Views: 341

Re: Ooh, the choice paralysis of DIYing

No, it will draw all it can, which is why the bike has a controller, to control that. Motors will pull till they fry, under a good stiff load. Controller might work on 48v, or not. It may just refuse, due to a high voltage limiting shut off. Or it might go pop, as low voltage capaicitors inside blow...
by dogman dan
May 18 2020 6:33am
Forum: E-Bike General Discussion
Topic: eZee vs MAC? Your thoughts?
Replies: 16
Views: 351

Re: eZee vs MAC? Your thoughts?

Both stellar vendors. But if the Mac is a slower wind, it will be better for riding slower, up the steeper bits. Not more power, nor more torque, just more efficient at the less than 15 mph riding, than a 10t mac, or similar wind in the ezee. If the Ezee comes in slow wind, then its always a no brai...
by dogman dan
May 18 2020 6:20am
Forum: Battery Technology
Topic: Requesting a BMS recommendation after fire: 8S LiPo
Replies: 24
Views: 446

Re: Requesting a BMS recommendation after fire: 8S LiPo

Well, here's what I learned after my bike burned down my garage, making the house uninhabitable for almost a year. OUTSIDE. And not on the bike / vehicle. NO EXCEPTONS. Otherwise, you were on the right track for safer use of lipo, you just picked some shitty lipo and then used it too long. Keep em f...
by dogman dan
May 15 2020 6:31am
Forum: E-Bike General Discussion
Topic: Question about making recumbent e-trike
Replies: 21
Views: 504

Re: Question about making recumbent e-trike

Too much money and hassle for the same thing. Well,, its not the same thing. That's why I keep telling folks that want to have a motorcycle, to get one. But go ahead, ride motorcycle fast in the street, with no license, no insurance, no armor, and no helmet. I can only say that when that oncoming ca...