Search found 1350 matches

by ElectricGod
Dec 15, 2017 3:30 pm
Forum: E-Scooter and Motorcycle General Discussion
Topic: E-Bike XB502 conversion project
Replies: 143
Views: 11539

Re: E-Bike XB502 conversion project

I might be riding my moped this weekend! Things still needing more work... 1. Fix my throttle...bad hall? 2. Take off the motor so I can move the fender forward about 1" 3. Set the wheel spacing so the back wheel is centered 4. Mount a sprocket to the back wheel and set the chain line 5. Install a 2...
by ElectricGod
Dec 15, 2017 1:42 pm
Forum: E-Scooter and Motorcycle General Discussion
Topic: E-Bike XB502 conversion project
Replies: 143
Views: 11539

Re: E-Bike XB502 conversion project

Bearings in the new wheel are replaced and i recorded it.

1 Removing bearings from a wheel: https://youtu.be/R83LZLUq7QI
2 Bearing placement tips: https://youtu.be/WXtD3ntKS0M
3 Installing bearings in a wheel: https://youtu.be/4Dh6-4_dge0
by ElectricGod
Dec 14, 2017 1:50 pm
Forum: E-Scooter and Motorcycle General Discussion
Topic: Random tools and EV related projects
Replies: 17
Views: 347

Re: Random tools and EV related projects

I bought a Castle Creations BEC 2.0 15 amp to run the XHP70.2 LEDs on. The idea is it has an adjustable output so you can control how much you over drive the LED. This BEC gets used by LED people a good bit for this purpose. My intention is to run 2 XHP LEDs on the one BEC. Since it's rated for 15 a...
by ElectricGod
Dec 13, 2017 5:51 pm
Forum: E-Scooter and Motorcycle General Discussion
Topic: E-Bike XB502 conversion project
Replies: 143
Views: 11539

Re: E-Bike XB502 conversion project

I tried to put the wheel on the back forks last night and the wheel well is too far towards the back of the forks. LOL...gotta move it so the axle is in the drop-outs. My angle was perfect for the curvature of the tire, I just guessed wrong about the fender position. To fix this, I will need to unbo...
by ElectricGod
Dec 13, 2017 2:24 am
Forum: E-Scooter and Motorcycle General Discussion
Topic: Random tools and EV related projects
Replies: 17
Views: 347

LED projects continued...

More LED lights coming soon. New shells are on their way and the LED's have arrived. This is XHP70.2 and XP-L2 LEDs. 18 of the XP-L2's will go in a flashlight. The focusable shells will get a couple of them as well. Those shells are too small for the XHP70.2's in them. They lack sufficient metal to ...
by ElectricGod
Dec 13, 2017 1:45 am
Forum: E-Scooter and Motorcycle General Discussion
Topic: E-Bike XB502 conversion project
Replies: 143
Views: 11539

Re: E-Bike XB502 conversion project

The back wheel arrived today so I had to get this thing put together. I'm missing the final bolts that hold the hub to the wheel, but these ones work for now, but are too short. They make it half way into the threads. The tire has no tube which is perfect. http://i1055.photobucket.com/albums/s515/rk...
by ElectricGod
Dec 12, 2017 9:56 pm
Forum: General Discussion
Topic: can you help me source this LED?
Replies: 10
Views: 158

Re: can you help me source this LED?

Why bother using the same LED again? You have so many options that will work in place of this LED that also run on 12 volts. Go look at the selection of LEDs at Mountain Electronics (www.mtnelectronics.com). I bet you will find something that will work as a replacement. IT doesn't matter that it's a...
by ElectricGod
Dec 12, 2017 9:50 pm
Forum: E-Bike General Discussion
Topic: OpenEbike - open source frame design
Replies: 26
Views: 455

Re: OpenEbike - open source frame design

Fortunately those honeycomb sections on the frame are NOT paper thin like the examples presented later. They have considerable thickness to them, but are strategically hollowed out where strength and rigidity are not compromised. Also that picture is a computer rendering. Who knows what the final re...
by ElectricGod
Dec 12, 2017 9:11 pm
Forum: E-Scooter and Motorcycle General Discussion
Topic: Random tools and EV related projects
Replies: 17
Views: 347

Re: Replacing wheel bearings

Ball bearings don't tolerate lateral forces very well. They are intended to take radial forces almost exclusively. Bearing balls -- the balls themselves -- don't care in what frame of reference force is applied to them. They are balls! Any force applied to them acts through the diametric centre, an...
by ElectricGod
Dec 12, 2017 3:13 pm
Forum: E-Scooter and Motorcycle General Discussion
Topic: Random tools and EV related projects
Replies: 17
Views: 347

Replacing bearings in typical scooter and moped wheels

I post a lot of stuff and as a result people PM me for advice on how to do things. That just happened and the question was how to replace wheel bearings. I thought it worthwhile to repost what I just sent to BCTECH. At the end is a video on the subject that is also useful. Ball bearings don't tolera...
by ElectricGod
Dec 11, 2017 12:25 pm
Forum: E-Bike Reviews & Testing
Topic: PowerVelocity controller review
Replies: 224
Views: 6209

Re: PowerVelocity controller review

My testing efforts from the other night... These are some of the BJT's and diodes scrounged from various boards that thanks to these 2 component testers are now known to be good. I have another parts drawer like this brimming full of smaller 3 legged parts of unknown origin or functionality. They wi...
by ElectricGod
Dec 10, 2017 10:08 pm
Forum: E-Scooter and Motorcycle General Discussion
Topic: E-Bike XB502 conversion project
Replies: 143
Views: 11539

Re: E-Bike XB502 conversion project

Work work done... The back wheel will be here probably Wednesday or so. I've moved the head light LED's to the handlebar light covers last night. I also added a few LED strips to a few places to improve visibility. I need to do some minor rewiring and then that;s all good to go. I ordered a couple o...
by ElectricGod
Dec 08, 2017 6:56 pm
Forum: E-Bike Reviews & Testing
Topic: PowerVelocity controller review
Replies: 224
Views: 6209

Re: PowerVelocity controller review

... I pulled out several mosfets and tested them on all 3 of my testers and the measured results were all very close. For example, the oldest tester would say that a mosfet turned on at 3.7 volts, and the previous tester would say 3.8 volts and the new one would would measure 7.75 volts. THat's pre...
by ElectricGod
Dec 08, 2017 4:16 pm
Forum: E-Bike Reviews & Testing
Topic: PowerVelocity controller review
Replies: 224
Views: 6209

Re: PowerVelocity controller review

The new component tester arrived last night. I wasn't expecting much from it beyond what the other component testers do. And honestly, I bought it just because it was described as showing Rds. I can confirm that is does display Rds values for mosfets. Whether they are accurate measurements or not wi...
by ElectricGod
Dec 07, 2017 3:59 pm
Forum: E-Scooter and Motorcycle General Discussion
Topic: E-Bike XB502 conversion project
Replies: 143
Views: 11539

Re: E-Bike XB502 conversion project

This is my new back wheel and hub. I have this exact wheel in the 10" size or 3.00x10 tire on my blue scooter. They are decently well machined and balanced. The factory bearings are inexpensive steel bearings, but are a standard size that is readily available. I should have 4 of them in ceramics alr...
by ElectricGod
Dec 06, 2017 3:47 pm
Forum: E-Bike Reviews & Testing
Topic: PowerVelocity controller review
Replies: 224
Views: 6209

Re: PowerVelocity controller review

Go back to my first post on this meter. Reread it. I've never changed my tune on what I thought of it or my expectations. there stands "more confirmation" and "hopefully it will work" :roll: Don't get me wrong, i was going to prevent you from buying the wrong device for measuring Rds On of Mosfets....
by ElectricGod
Dec 05, 2017 10:06 pm
Forum: E-Bike Reviews & Testing
Topic: PowerVelocity controller review
Replies: 224
Views: 6209

Re: PowerVelocity controller review

However, you know I'm NOT wrong. Manufacturers test 1:10,000 or less! This is common practice. Ever work for a semiconductor company? I have...Microchips...in Arizona. If you really did work for a semiconductor manufacturer then you should know why they test less than 1:10,000 parts. Here's a relia...
by ElectricGod
Dec 05, 2017 8:03 pm
Forum: E-Bike Reviews & Testing
Topic: PowerVelocity controller review
Replies: 224
Views: 6209

Re: PowerVelocity controller review

Thanks for the laugh ElectricGod. You think you know better than a major semiconductor manufacturer? :lol: That application note is more factual than your tests. But hey, at least you get to brag about actually doing tests! You are welcome! However, you know I'm NOT wrong. Manufacturers test 1:10,0...
by ElectricGod
Dec 05, 2017 6:51 pm
Forum: E-Bike Reviews & Testing
Topic: PowerVelocity controller review
Replies: 224
Views: 6209

Re: PowerVelocity controller review

If Addy is still reading this thread... test mosfets and post your results. I'm not convinced that I need to, not that it matters because I don't have a decent quantity of mosfets on hand to test. When it comes time to put together the controller I'm laying out right now, I may do some testing. I j...
by ElectricGod
Dec 05, 2017 2:08 pm
Forum: E-Bike Reviews & Testing
Topic: PowerVelocity controller review
Replies: 224
Views: 6209

Re: PowerVelocity controller review

This is your project. Why do you suddenly assume it is everyone's? People are trying to help you, but it doesn't mean they're going to do your project. To be honest, I don't expect or assume anything other than bitching about what I'm doing. But if putting peoples feet to the fire shuts up all the ...
by ElectricGod
Dec 05, 2017 1:55 pm
Forum: E-Bike Reviews & Testing
Topic: PowerVelocity controller review
Replies: 224
Views: 6209

Re: PowerVelocity controller review

THat ESR meter does measure low resistances. I get that it was designed for measuring internal resistance of caps. I did read the description. So why does that matter specifically? If I put a shunt across it's 2 leads, will it measure the resistance of the shunt? My suspicion is that it will. So th...
by ElectricGod
Dec 05, 2017 1:39 pm
Forum: E-Bike Reviews & Testing
Topic: PowerVelocity controller review
Replies: 224
Views: 6209

Re: PowerVelocity controller review

Put peoples feet to the fire and all of a sudden they disappear or have reasons why they can't be involved.

"What?! You can't expect me to do more than be critical of what you are doing? I can't be bothered with actually doing anything constructive!"

Truly weak and pathetic!
by ElectricGod
Dec 04, 2017 5:50 pm
Forum: Battery Technology
Topic: Samsung INR21700-48G
Replies: 13
Views: 1288

Re: Samsung INR21700-48G

I've purchased 40 Samsung INR21700-48G. They have 2C discharge. According to the spec sheet this reduces their life span...whatever that means since it's not specific. At 5000mah and 1C, paralleling them will still result in good current supply. My blue scooter runs on used laptop cells scrounged fr...
by ElectricGod
Dec 04, 2017 5:49 pm
Forum: E-Scooter and Motorcycle General Discussion
Topic: E-Bike XB502 conversion project
Replies: 143
Views: 11539

Re: E-Bike XB502 conversion project

I'd like to get all those stupid decals off the scooter, but they are under the clear coat. I'm also looking into 21700 cells. I'll have 40 of them here in a couple of weeks. I'd like to dispose of LIPO packs forever, but so far, I've been too lazy to weld up an 18650 pack. The 21700 with it's incre...
by ElectricGod
Dec 04, 2017 3:36 pm
Forum: E-Bike Reviews & Testing
Topic: PowerVelocity controller review
Replies: 224
Views: 6209

Re: PowerVelocity controller review

That's an ESR meter. Designed to measure series resistance of capacitors. Seems to have a resolution of 0.001. Not very adequate resolution for measuring a value of 0.0032 vs 0.0035. You have no idea what controller companies are doing. You assume they are doing nothing, just slamming parts out of ...