Search found 24914 matches

by amberwolf
Mar 20 2019 8:20pm
Forum: General Discussion
Topic: la Nina rears her ugly head
Replies: 1215
Views: 53548

Re: la Nina rears her ugly head

I think it ws last week we had a pretty hefty storm; might'vbe been the week before. Since then it's been sunny and warm, in the 80s F. This morning not long after dawn we got quite a little surprise rainstorm, with intense winds (kept slamming tree branches against the bedroom windows and roof / wa...
by amberwolf
Mar 20 2019 7:50pm
Forum: Stand-up E-scooters and E-skateboards
Topic: Scooter on Norwottuck rail trail
Replies: 1
Views: 25

Re: Scooter on Norwottuck rail trail

https://www.mass.gov/locations/norwottuck-rail-trail Restrictions at Norwottuck Rail Trail No alcohol No motorized vehicles No horses No littering Seems clear enough that they don't want things with motors on the trail. However: If scooters like that are not considered vehicles in the transportatio...
by amberwolf
Mar 20 2019 6:51pm
Forum: Battery Technology
Topic: Battery power problems
Replies: 40
Views: 976

Re: Battery power problems

Ah, sorry, I missed that. I do still think that his point was as I noted above. And I still would recommend verifying the specifications of the PSU on the meanwell site. (same for any other PSU; I'd check with the manufacturer to make sure it's specifications are correct for your use before buying)
by amberwolf
Mar 20 2019 6:41pm
Forum: E-Bike Technical
Topic: Increasing controller power to my 1000W DD hub motor
Replies: 26
Views: 561

Re: Increasing controller power to my 1000W DD hub motor

80a thats some current on generic 1500w controllers. what motor did you dump it on and did you beef up traces replace motor phase wires etc. No, I didn't change anything except adding that shunt. I didn't really expect it to survive very long, but it has. It's on an MXUS 4504 in a 20" wheel (closer...
by amberwolf
Mar 20 2019 6:12pm
Forum: E-Bike Technical
Topic: Hub motor cracking noise
Replies: 8
Views: 125

Re: Hub motor cracking noise

It is not in sync with the wheel rotation (actually appears to be sometimes faster than the wheel rotation), but it is not nearly fast enough to be synced with the motor rotation either. (you can see the stickers on the motor in different places when the sound occurs, and sometimes they are not visi...
by amberwolf
Mar 20 2019 5:57pm
Forum: Motor Technology
Topic: APL's DIY axial-flux motor
Replies: 234
Views: 6587

Re: APL's DIY axial-flux motor

In that picture of it on the table, it reminds me of some of the buildings in the Jetsons. ;)
by amberwolf
Mar 20 2019 5:54pm
Forum: E-Bike Technical
Topic: Built my mom an ebike and it's destroying batteries
Replies: 18
Views: 579

Re: Built my mom an ebike and it's destroying batteries

If a BMS has just a charge/disharge port it doesn't matter. But... If a BMS has both a charge port and a separate discharge port, then: If charging, and the BMS shuts off the charge port due to a high cell, to keep charge current from flowing, but it is still connected via the discharge port to anot...
by amberwolf
Mar 20 2019 5:40pm
Forum: Motor Technology
Topic: Help Hookup MY1020 Motor & Controller for Go Kart
Replies: 7
Views: 117

Re: Help Hookup MY1020 Motor & Controller for Go Kart

Unfortunately the images are still not visible; apparently imgur is another of those sites that I can't access. :(

But even wihtout the images, providing the other requested information would still help.
by amberwolf
Mar 20 2019 5:09pm
Forum: Battery Technology
Topic: Battery power problems
Replies: 40
Views: 976

Re: Battery power problems

His point was not whether that specific PSU has adjustments. His point was that the BMS does NOT, and that any adjustments must be done on the PSU (or charger).

You can look at the Meanwell website for that PSU's specifications to see if it has adjustments or not.
by amberwolf
Mar 20 2019 1:18am
Forum: E-Bike General Discussion
Topic: Power assist not working all the time ITS FIXED !
Replies: 12
Views: 196

Re: Power assist not working all the time ITS FIXED !

Crystalyte actually had a controller with two phase wire sets, and a toggle switch between htem. IIRC it was for a motor with two sets of windings (though I don't recall if it was just to get different speeds, or what). They also had a controller with two phase *and hall* wire sets, which actually p...
by amberwolf
Mar 20 2019 12:46am
Forum: E-Bike Technical
Topic: Hub motor cracking noise
Replies: 8
Views: 125

Re: Hub motor cracking noise

That video has a kind of thunking noise, but I don't hear any cracking. In your case, does it happen once per wheel rotation? Or is it less often? Or more often? Exactly how many thunks during each wheel revolution? Since it only happens when riding, and not offground, it implies a problem with the ...
by amberwolf
Mar 20 2019 12:16am
Forum: E-Bike Technical
Topic: Why plugs are these?
Replies: 7
Views: 176

Re: Why plugs are these?

dunno if it's in the usa but you can look up "ecat" 's posts in the for sale section and I think he has some.
by amberwolf
Mar 20 2019 12:09am
Forum: E-Bike Non-hub Motor Drives
Topic: MY 1020 Controller Issues
Replies: 3
Views: 87

Re: MY 1020 Controller Issues

1.)Power Cables: big red 3.)Electric Door Lock Cable: middle red If you get (or have) a brushless motor with hall sensors, then to use the controller you have, connect these together to enable the controller. I plugged the power cable into the middle red cable and it started smoking so I unplugged ...
by amberwolf
Mar 20 2019 12:05am
Forum: Motor Technology
Topic: Help Hookup MY1020 Motor & Controller for Go Kart
Replies: 7
Views: 117

Re: Help Hookup MY1020 Motor & Controller for Go Kart

Hey, I've linked the pictures through the imgur link. Could you let me know if it works? There is a single link to a site that gives me just a blank page except for thumbnails that couldn't be related to your post. I f you use the attachments tab below the text entry box when posting, and add files...
by amberwolf
Mar 19 2019 1:34am
Forum: E-Bike Technical
Topic: Hall Sensors'b'Gone
Replies: 211
Views: 9906

Re: Hall Sensors'b'Gone

The repaired axle survived today's work commute. I might have time Wed or Thu to work on rewiring it again.

I think I have a workable idea for a complete axle replacement using a tube with a tube clamp, and larger ID bearings with same OD. Gonna put it in my trike thread once I sketch it up.
by amberwolf
Mar 19 2019 1:23am
Forum: E-Bike General Discussion
Topic: Middrive Chain popping
Replies: 25
Views: 329

Re: Middrive Chain popping

I'd assume they start in the right gear. ;) Other ways to prevent it: Increase chain tension so it can't lift up over the teeth. This then wears the chain out faster at the pins. Increase derailer spring tension so it keeps the chain wrapped on the sprocket. This may make it harder to shift. (much h...
by amberwolf
Mar 19 2019 1:01am
Forum: Motor Technology
Topic: Development of a controller board for Electric vehicle.
Replies: 5
Views: 80

Re: Development of a controller board for Electric vehicle.

I don't want to dissuade you from trying, but to be realistic, it is quite a challenge to do this from scratch, with no knowledge at all of how anything works. Even people that already know quite a lot have had tremendous problems getting their controller designs working. It's not just about a schem...
by amberwolf
Mar 19 2019 12:44am
Forum: E-Bike General Discussion
Topic: How crazy am I
Replies: 5
Views: 186

Re: How crazy am I

No. Adding a set of charged cells in series with a discharged battery doesn't get you anything; the discharged battery is still discharged and still has to be recharged. EIther: Get a bigger battery (more Ah, same voltage) to replace the one you have, Or add a second battery in parallel with the fir...
by amberwolf
Mar 19 2019 12:38am
Forum: Motor Technology
Topic: Help Hookup MY1020 Motor & Controller for Go Kart
Replies: 7
Views: 117

Re: Help Hookup MY1020 Motor & Controller for Go Kart

This system seems to have a harness that leads to a set of other wires which is why I have attached a second picture below. There is no second picture, and nothing is attached. There is a single link to a site that gives me just a blank page except for thumbnails that couldn't be related to your po...
by amberwolf
Mar 19 2019 12:16am
Forum: E-Bike Non-hub Motor Drives
Topic: MY 1020 Controller Issues
Replies: 3
Views: 87

Re: MY 1020 Controller Issues

Hi, I'm building an electric go-kart using the MY 1020 motor or maybe a clone of it. But unfortunately, I can't seem to get the motor to run at all. Not even powering up. Unless yours is a type I have never seen, the MY1020 is a brushed motor (only two wires), so it is incompatible wiht the control...
by amberwolf
Mar 18 2019 11:55pm
Forum: Battery Technology
Topic: connections without DIY welding / soldering
Replies: 3
Views: 137

Re: connections without DIY welding / soldering

YOu might want to read around the forums; there are a lot of existing threads for such things. One example search for no-weld solutions (no-weld isn't findable due to the "no-" but weld is, so easy to look at the titles....) https://endless-sphere.com/forums/search.php?keywords=weld&terms=all&author...
by amberwolf
Mar 18 2019 11:52pm
Forum: Motor Technology
Topic: Building an AC Motor
Replies: 2
Views: 112

Re: Building an AC Motor

And then once you build the motor, you then have to build a controller for it, and that will probably be even harder and more expensive than the motor to design and construct. You would probably be better off to find a wrecked EV of similar capabilities to what you want your car to do, and use it's ...
by amberwolf
Mar 18 2019 11:40pm
Forum: E-Bike Technical
Topic: Why plugs are these?
Replies: 7
Views: 176

Re: Why plugs are these?

butters149 wrote:
Mar 18 2019 1:47pm
Hello, does anyone know what plugs these are? They are used to connect to my headlight.
Since you have not attached an image or provided a link to your kit, we have absolutely no way of knowing what plugs you are talking about. ;)
by amberwolf
Mar 18 2019 11:27pm
Forum: E-Bike General Discussion
Topic: hub motors, have you broken your rim/spokes yet
Replies: 10
Views: 218

Re: hub motors, have you broken your rim/spokes yet

his only concern (not one in my mind) is that the spokes and rim arent up to par. Most of the kit rims I've seen and owned are inadequate for the spoke gauge used; typically they use 12g spokes on the cheapest bicycle rims they can get, so the rims are not strong enough to hold the spoke tension ev...