Search found 25417 matches

by amberwolf
May 20 2019 1:06am
Forum: E-Scooter and Motorcycle General Discussion
Topic: Greetings, care to help design a build?
Replies: 4
Views: 41

Re: Greetings, care to help design a build?

Just for grins, here is the grin tech simulator using a hubmotor (that coudln't actually do what you want, but I've pushed it with a custom setting to "change" it's winding to let it do ti for the simulation): https://www.ebikes.ca/tools/simulator.html?motor=MX4503_SA&mass=363&hp=0&axis=mph&batt=cus...
by amberwolf
May 20 2019 12:50am
Forum: E-Scooter and Motorcycle General Discussion
Topic: Greetings, care to help design a build?
Replies: 4
Views: 41

Re: Greetings, care to help design a build?

However, before I spend the money on that I'd like to get my feet wet with an old motorcycle I've got first. FWIW, because of battery capacity vs places to put them, motorcycles can be harder than cars to convert. Would there be an affordable motor that could direct drive the shaft its-self? One th...
by amberwolf
May 19 2019 11:58pm
Forum: General Discussion
Topic: Elecycles?
Replies: 1
Views: 25

Re: Elecycles?

Is Elecycles a trusted source? These are the posts about that vendor here, so all I know about them. https://endless-sphere.com/forums/search.php?keywords=Elecycles&terms=all&author=&sc=1&sf=all&sr=posts&sk=t&sd=d&st=0&ch=300&t=0&submit=Search Regarding trusted vendors, I'd say http://ebikes.ca (gr...
by amberwolf
May 19 2019 11:39pm
Forum: Battery Technology
Topic: 14s2p Minicube w/ 21700 batteries
Replies: 1
Views: 39

Re: 14s2p Minicube w/ 21700 batteries

Less parallel cells means less current delivery ability (vs a pack of the same cells with more parallel cells). If they're more energy dense, then they're also (generally) less power-dense, which usually means they are less capable of higher current discharge (or charge) than a similer more power-de...
by amberwolf
May 19 2019 11:06pm
Forum: E-Bike General Discussion
Topic: Help me to create my solar panel trike with caravan trailer
Replies: 61
Views: 688

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

My English is not fluent too :oops: That's, ok, it's WAY better than my French (which is nonexistent). :oops: But one thing pretty sure : lifepo4 can charge quicker. Not true of every LiFePO4, vs every other chemistry. LTO (lithium Titanate) can charge even faster, in general, if you only want gene...
by amberwolf
May 19 2019 10:51pm
Forum: Battery Technology
Topic: Powerful inside-frame battery
Replies: 6
Views: 127

Re: Powerful inside-frame battery

It probably uses the same battery that's in the CeMoto folding bike, like the one I fixed up for Cvin here: https://endless-sphere.com/forums/viewtopic.php?f=3&t=81629 or the MATE here https://endless-sphere.com/forums/viewtopic.php?f=3&t=82761 That's a pouch-style battery, using 10 small pouches ba...
by amberwolf
May 19 2019 10:25pm
Forum: General Discussion
Topic: 12v vs 6v
Replies: 1
Views: 39

Re: 12v vs 6v

It's all there in the numbers you already have: 12V / 6V = 2 6V * 7Ah = 42Wh 12V * 7Ah = 84Wh 84Wh / 42Wh = 2 The only number you don't have is the efficiency of the "cable" that converts from 12v to 6v, which will waste some of the power. If it doesn't list it's efficiency, you can assume it's 70-8...
by amberwolf
May 19 2019 10:20pm
Forum: E-Bike Technical
Topic: Ebike bike Wheel pulling to one side
Replies: 34
Views: 317

Re: Ebike bike Wheel pulling to one side

Chalo is suggesting that if you have to rebuild the wheel anyway, that you use *smaller* diameter spokes, so that they hold tension better without damaging the rim. The 12g spokes that usually come on hubmotor wheels are usually paired with a bicycle rim that is not really capable of the tension tha...
by amberwolf
May 19 2019 9:58pm
Forum: E-Bike Technical
Topic: Ebike bike Wheel pulling to one side
Replies: 34
Views: 317

Re: Ebike bike Wheel pulling to one side

As for drilling new holes, I rather not. Where is anyone suggesting drilling new holes? If you're referring to this (which is the only post with the word "drill" in it): This would be an excellent opportunity to use good quality 14-15ga double butted spokes and a rim drilled for 14ga spokes, instea...
by amberwolf
May 19 2019 9:45pm
Forum: E-Bike Technical
Topic: Modifying a shunt with controlled results
Replies: 50
Views: 17034

Re: Modifying a shunt with controlled results

If all you want is a "soft start" then you can try just adding an "RC filter" to your throttle signal, between the throttle and the controller. What you want to do is choose a resistor (in series with the signal) and a capacitor (in parallel with the signal, at the controller side of the resistor) t...
by amberwolf
May 19 2019 9:07pm
Forum: E-Bike General Discussion
Topic: Help me to create my solar panel trike with caravan trailer
Replies: 61
Views: 688

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

I don't think we're communicating correctly, so there are repeats of important information in the reply below. If there is any part of it that isn't clear, please ask specific questions so that we can help you understand the parts you need to, to ensure you can find the right stuff for your system t...
by amberwolf
May 19 2019 1:07am
Forum: E-Bike Technical
Topic: Speed limit of a Bosch motor
Replies: 3
Views: 91

Re: Speed limit of a Bosch motor

Probably. Any circuit that divides by two would work, like a D-type flip-flop
https://www.electronics-tutorials.ws/co ... unt_1.html

https://www.google.com/search?q=smple+d ... se+counter
by amberwolf
May 19 2019 12:55am
Forum: E-Bike Technical
Topic: Ebike bike Wheel pulling to one side
Replies: 34
Views: 317

Re: Ebike bike Wheel pulling to one side

It is possible that even a small difference at the axle could result in what looks like a significant difference at the tire, and it would also explain why the spacing is closer to equal at the seatstays and more unequal at the chainstays, assuming the filing you refer to is at the flats of the drop...
by amberwolf
May 18 2019 11:09pm
Forum: E-Bike Technical
Topic: Ebike bike Wheel pulling to one side
Replies: 34
Views: 317

Re: Ebike bike Wheel pulling to one side

My roommate is in the Living room so I used my phone light to look, but it does seem like it's centered on the seat stay. I will try to measure it tomorrow to know for sure. This would indicated a wheel dishing problem if it's centered on the seat stay. No. If it is centered on either set of stays,...
by amberwolf
May 18 2019 10:58pm
Forum: E-Bike Technical
Topic: Ebike bike Wheel pulling to one side
Replies: 34
Views: 317

Re: Ebike bike Wheel pulling to one side

The wheel is closer to the frame on the left side. I have more of a gap between the frame and the wheel on the right, vs the left. If it's the same gap as you rotate the wheel around, then the wheel is at least true. But it is not dished correctly. If it can't be dished to be centered, then the spo...
by amberwolf
May 18 2019 10:32pm
Forum: E-Bike Technical
Topic: Ebike bike Wheel pulling to one side
Replies: 34
Views: 317

Re: Ebike bike Wheel pulling to one side

The problem is the way you've worded it is confusing (at least to me, probably to others). The phrase "wanting to pull", etc, implies the wheel is actually moving to one side after it's fixed in place, just sitting there not being touched. Or that it is causing the bike to move to one side while rid...
by amberwolf
May 18 2019 10:15pm
Forum: General Discussion
Topic: Lithium ion battery
Replies: 3
Views: 136

Re: Lithium ion battery

where can I get a replacement for this JBD SP055002-l 120amp battery iv looked everywhere can’t find it Well, there's the obvious--get another BMS just like the original from the place you bought the battery. Then you can just unplug the dead one, and plug in the new one, if ti's all plugs. If ther...
by amberwolf
May 18 2019 10:06pm
Forum: E-Bike Technical
Topic: Ebike bike Wheel pulling to one side
Replies: 34
Views: 317

Re: Ebike bike Wheel pulling to one side

The wheel will be centered as best as I can, and when I tighten it. The wheel will move towards the inside of the frame. Which side does it move toward? (there are two "insides"--the left, and the right) The drive side of the axle will raise up a tiny bit. Up as in toward the seat? Also, when wheel...
by amberwolf
May 18 2019 9:57pm
Forum: E-Bike General Discussion
Topic: Shunt suggestion
Replies: 6
Views: 133

Re: Shunt suggestion

As an example, I used the original 45A Grin SA shunt module on SB Cruiser. But since I was drawing 80-120A+ thru it for several seconds at a time, it was heating up noticeably, *and* there was noticeable voltage drop, as well as not seeming to read the right current during the peaks. I paralleled tw...
by amberwolf
May 18 2019 9:31pm
Forum: E-Bike Technical
Topic: Ebike bike Wheel pulling to one side
Replies: 34
Views: 317

Re: Ebike bike Wheel pulling to one side

What do you mean by "pulling to one side"?

Do you mean the bike drifts to taht side while riding because of the motor power?

Do you mean the wheel itself moves in the dropouts to that side?
by amberwolf
May 18 2019 9:28pm
Forum: E-Bike Technical
Topic: Speed limit of a Bosch motor
Replies: 3
Views: 91

Re: Speed limit of a Bosch motor

AFAIK, Two magnets means it gets two pulses for every actual revolution, so it will then think it is *already* going twice as fast as it is.

So any speed limit it has will activate when you are actually only going half the speed it would otherwise.
by amberwolf
May 18 2019 9:22pm
Forum: E-Bike Technical
Topic: MXUS 3000 Hub Motor - V1 V2 V3
Replies: 1886
Views: 40258

Re: MXUS 3000 Hub Motor - V1 V2 V3

If you don't answer questions, we can't help you.
by amberwolf
May 18 2019 3:05am
Forum: Motor Technology
Topic: Leaf / leafmotor / leafbike high efficiency 1500w motor
Replies: 1426
Views: 174182

Re: Leaf / leafmotor / leafbike high efficiency 1500w motor

Well, the *rim* is v-brake compatible, so that' sprobably what they meant. The wheel as a whole is disc compatible as long as it has the mount on the hub, if your frame or fork supports disc. There is a catch, though: not every disc caliper will fit with every motor, without using a rotor larger tha...
by amberwolf
May 18 2019 1:24am
Forum: E-Bike Technical
Topic: The SB Cruiser: Amberwolf&Dogman's 2WD CargoTrike&DogCarrier
Replies: 883
Views: 100978

Re: The SB Cruiser: Amberwolf&Dogman's 2WD CargoTrike&DogCarrier

plain old cup and cone, so I can adjsut them. it's a crappy old wheel off a "mongoose basher", which was a very heavy "bike". I used it before on the trike when I tried some crappy disc brakes (bso type) that basically didn't do a thing to slow me down even at walking speed. :lol: But otehr than thi...
by amberwolf
May 18 2019 1:17am
Forum: General Discussion
Topic: Specialized levo 2017 500w ebike
Replies: 6
Views: 114

Re: Specialized levo 2017 500w ebike

If the cells did not get wet, then they should be fine for use. If they did get wet, then they may have issues later from corrosion, unless they were quickly dried out thoroughly. (water gets under the caps on the + end, for instance) You may not see a voltage problem from this initially...but later...