Endless Sphere

Not just the Chinese, not just ebike components; that's a problem around the world with all sorts of devices and stuff.

How long does he say it's been making this noise? Just started before loaning it to you, going on for years, or he's never heard it before?

Difference in the time might indicate different problems, especially if the noise has changed over time.

Some of the threads in these lists are relevant; should be easy to tell by title. Hopefully they help. https://endless-sphere.com/forums/search.php?keywords=bike+computer&terms=all&author=&sc=1&sf=titleonly&sr=topics&sk=t&sd=d&st=0&ch=300&t=0&submit=Search https://endless-sphere.com/forums/search.ph...

I connected it to a battery but it was a 36 volt nominal battery and the controller minimum voltage on the label is 48 volts. A very full 36v battery is around the same voltage as a very empty 48v battery, so it *might* let the controller turn on if it's fully charged. But if the controller LVC is ...

HK12K wrote: ↑

Dec 15 2019 7:05pm

If anyone needs parts there is a used ST2 on my local Craigslist.

Too bad we have no idea where that is. :/

A one inch difference from one side to the other is very severe. 1+3/4 from fork to motor on one side and 3/4 on the other side I haven't seen a front hubmotor with that much difference. Rear motors, yes, because of the freewheel allowance on the drive side. If the spokes are at the same angle on bo...

Those cases are the best way to keep them housed; they make packaging and connection VERY easy and reliable. Though they do add bulk to the resulting pack, they also protect the cells. These are a good reliable brand and model cell. If I had any money to spare for it, I'd buy as many as I could affo...

There is also a setting for phase current limit! This also is between 50-100% what should I set that at? That depends on your motor. The lower the phase current, the lower the torque. If it has a default setting for the motor it comes with, that should be safe. Otherwise, you should probably ask th...

Basically in order for this to work safely under "any" conditions, the "Auxiliary battery pack" (ABP) would have to be a portable battery-powered battery charger, not just a simple battery. So the actual battery inside the ABP could be any voltage or capacity that gives you the extra total capacity ...

Is the motor itself not centered? Or is it just the rim/tire that is not centered? If the motor itself is not centered, then it sounds like a rear motor being used in front. Maybe somehow it's a rear stator inside the covers for a front wheel? If it's just the rim/tire not centered, then maybe someo...

Sorry to tell you this, but none of this is news on this site. I think you might want to read around here a bit. One disadvantage to this system is that the old battery, that has much less capacity and capability now than it used to, is now extra weight and volume on the bike, which you may not be a...

Assuming you have a DD hubmotor (or non-freewheeling middrive), you could just change out your non-regen controller for a simple cheap regen-capable controller. Cheaper, simpler, and potentially more reliable. Not that I'm against DIY :lol: , just that most DD hubmotor bikes *DO* already have regen ...

You wouldn't happen to have any pictures of a skirt bearing would you? Would be interested to see how that works inside the motor. Some of these posts have some pics of skirt bearings in various motors, if it helps: https://endless-sphere.com/forums/search.php?keywords=%22skirt+bearing%22&terms=all...

If you can give details, people might be able to help you find one that already exists that does what you're after. Or, if there isn't one, to help you design one. (or see if they are able to design one for you). Without knowing what exactly it is that you need, it's difficult to do that. So, if you...

The charger shows 84.0v on my DMM and the voltmeter on my throttle input. When I disconnect the charger the voltmeter my battery read 78.0v on my DMM from it’s posts and on the voltmeter on my throttle. Ok, then the BMS in the battery is shutting off it's charge input when it reaches 78v. The charg...

jimbob01 wrote: ↑

Dec 14 2019 10:05am

Depends how big your bike is... people are running them..and at 10c they are nice for high power applications.

That's 10C burst for a few seconds, only 5C continuous.

(I use this model of EIG cells on my SB Cruiser trike, used, from a different source).

Ok I'm currently riding 11miles each day. <snip> I didn't want to limit myself to such a short range. I would like to be able to get 22 miles + so I don't have to charge battery every evening. <snip> I was wanting to reach up to 30mph + Keep in mind you'll likely need better tires, wheels and brake...

Anyways, since I just got it together in the last week, when I charge the battery the charger shows 84v on the lines but the battery has never reached over 78v at startup. What exactly does "at startup" mean? I would assume that the 84v means that at the end of charging, it is resting at 84v before...

I tried this, thinking there was a voltage drop somewhere, but my potentiometer on my throttle is surprisingly accurate. Only off by 0.1v. I don't understand what your throttle has to do with the battery voltage or the multimeter being used to measure the battery? You should make sure first that th...

Dual-ended support of the bell has been done on some of the friction drive motors, and some of the other RC-motor-driven middrives. I don't recall a hollow axle, but there have been several that use a large ID bearing on one end of the shaft, with a spacer between it's ID and the shaft, and then hol...

Most of the RC motors I've seen disassembled here on ES have bells that you could replace with a kurled roller.

I didn't think running the motor at a lower wattage it's rated for would be a good idea. I think you have at least one misunderstanding on how systems work. Almost always the motor will be running at much lower wattage than it's rating. Only at peak demands (startup from a stop, hill climbing, etc)...

Might seem like it, but if it's still the same battery pack for the same project being decided upon, it's better to have one thread to figure out exactly what needs to be built. ;) Otherwise the OP has to keep several separate threads updated with all the information all the time, and answer questio...

Yep, that's the wiring, as described in the CA info pages.

If you're using a hall sensor, you do use the 5v to power the sensor, though.

So is there a difference between what you're saying with the IGH in the front and an Internally Geared Crankshaft like the Patterson, Efneo or Schlumpf? Yes. look at my SB Cruiser thread for the IGH in frame pics. I think this is the original post where I first installed it http://www.endless-spher...