Endless Sphere

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...

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...

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...

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...

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...

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...

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...

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...

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...

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...

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...

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

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...

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,...

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...

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...

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...

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...

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...

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?

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.

If you don't answer questions, we can't help you.

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...

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...

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...