Search found 10836 matches

by spinningmagnets
Apr 01 2020 6:18am
Forum: Battery Technology
Topic: Nickel Strip VS Steel Strip
Replies: 12
Views: 759

Re: Nickel Strip VS Steel Strip

The slot forces all of the welding current to go through the cell-tip, rather than some of the current just passing across the nickel strip from one welding probe to the other. https://i0.wp.com/www.electricbike.com/wp-content/uploads/2019/03/SpotWeldCurrent1.png?w=700&ssl=1 https://i0.wp.com/www.el...
by spinningmagnets
Mar 29 2020 5:24am
Forum: General Discussion
Topic: haircut
Replies: 18
Views: 570

Re: haircut

I understand you young fellas wanting to be fashionable, but I took my 20-year-old Sears dog-clippers and mowed myself down to boot camp length...

https://www.youtube.com/watch?v=D0T4Yw-TabE

by spinningmagnets
Mar 27 2020 8:24am
Forum: Motor Technology
Topic: BBSHD Mobile 28 Grease
Replies: 4
Views: 1220

Re: BBSHD Mobile 28 Grease

ES member Deafcat is recommending Mobilith SHC 100 as a better alternative to Mobil-28. The name sounds like it is lithium-based (white grease?). I will have to research this...
by spinningmagnets
Mar 26 2020 5:10pm
Forum: E-Bike Technical
Topic: Help with controller wires
Replies: 7
Views: 195

Re: Help with controller wires

Change all the connectors, to a type of connector that is better than what the Chinese companies provide...

https://www.electricbike.com/connectors ... tle-motor/
by spinningmagnets
Mar 26 2020 4:55pm
Forum: Battery Technology
Topic: Nickel plated steel strip for li-ion Battery pack - Purpose of Nickel Plating?
Replies: 3
Views: 436

Re: Nickel plated steel strip for li-ion Battery pack - Purpose of Nickel Plating?

Nickel-plated copper is great for the series connections.

For the parallel "cell equalizing" connections, some resistance is a good thing. The parallel connections should be either pure nickel or nickel-plated steel. Also, the parallel "strip" can be very thin and narrow.
by spinningmagnets
Mar 26 2020 4:46pm
Forum: E-Scooter and Motorcycle General Discussion
Topic: Why are two speed transmissions not more prevalent?
Replies: 13
Views: 999

Re: Why are two speed transmissions not more prevalent?

I would like to add a few thoughts. If you are designing an electric scooter/motorcycle from scratch to sell to the public...I agree that the best configuration is to use higher watts that are feeding a larger motor in a "one speed" system. That being said... If you are converting a gasoline-motorcy...
by spinningmagnets
Mar 25 2020 2:51pm
Forum: General Discussion
Topic: Discussions aren't the same quality without Chalo
Replies: 161
Views: 11123

Re: Discussions aren't the same quality without Chalo

The moderation staff tried very hard to keep Chalo. He broke certain rules and was given a suspension, and he was asked to not break those rules. He broke them again. And again.
by spinningmagnets
Mar 25 2020 11:08am
Forum: E-Bike Technical
Topic: Looking to understand what happened in over-charged 6s pack
Replies: 6
Views: 139

Re: Looking to understand what happened in over-charged 6s pack

Try measuring the actual individual cell tabs, if you can reach them. Sounds like the harness is not wired right, or something shorted. If they were truly at 5.8V, I am sure they would have caught on fire, or at least would have no capacity now, since storing at anything more than 3.3V is inadvisabl...
by spinningmagnets
Mar 25 2020 9:10am
Forum: General Discussion
Topic: If I don't log in, some topics don't show up, why?
Replies: 10
Views: 254

Re: If I don't log in, some topics don't show up, why?

Some sections and topics are only available to read for members who are signed-in.
by spinningmagnets
Mar 23 2020 8:36pm
Forum: Battery Technology
Topic: Bionx bike with another Battery
Replies: 5
Views: 444

Re: Bionx bike with another Battery

Those BionX kits have the controller built into the hubmotor. The good part is that it eliminates some of the wiring clutter (Three fat phase wires from the controller to the motor, plus five small Hall wires at a minimum). The bad news is that only a BionX controller will fit there, so if you want ...
by spinningmagnets
Mar 23 2020 5:57am
Forum: Battery Technology
Topic: Lithium starting battery recommendation? For large rescue boat.
Replies: 3
Views: 290

Re: Lithium starting battery recommendation? For large rescue boat.

If you buy "affordable" cells they will likely have low current, so you would need a lot of them. If you connect a lot of cells in parallel and series, the bus material becomes a bottleneck to current. I'd suggest the red Headways, each is the size of two D-cells, 38mm diameter, 120mm long. LiFePO4 ...
by spinningmagnets
Mar 22 2020 11:39am
Forum: E-Bike Non-hub Motor Drives
Topic: Direct Drive Genesis
Replies: 361
Views: 60081

Re: Direct Drive Genesis

I can see them. Impressive. As a matter of fact, would you mind if I wrote about this for an article? I could credit "ES member Hugh-Jassman" or "Bob from Illinois" if you like...(insert actual name and state here)
by spinningmagnets
Mar 22 2020 11:33am
Forum: Items for Sale - New
Topic: Genesis Swingarm aka Farfle Swing arm new production run.
Replies: 153
Views: 15188

Re: Genesis Swingarm aka Farfle Swing arm new production run.

"If you weld them, they will buy" -Kevin Costner
by spinningmagnets
Mar 22 2020 9:51am
Forum: E-Bike Technical
Topic: Geared hub motor threw a magnet......
Replies: 2
Views: 110

Re: Geared hub motor threw a magnet......

From the motor section stickey index:

viewtopic.php?f=30&t=69684

"Very good magnet bonding epoxy" (bigmoose, Doctorbass)
viewtopic.php?t=27270
by spinningmagnets
Mar 21 2020 9:40pm
Forum: E-Vehicles General Discussion
Topic: We ordered a 2020 Mini Cooper electric!
Replies: 22
Views: 813

Re: We ordered a 2020 Mini Cooper electric!

Very good looking! And the electric version should be super reliable.
by spinningmagnets
Mar 21 2020 4:38pm
Forum: E-Vehicles General Discussion
Topic: We ordered a 2020 Mini Cooper electric!
Replies: 22
Views: 813

Re: We ordered a 2020 Mini Cooper electric!

I just bought my second Volt The more I read about EV's, the more I am impressed by the Volt. And this is coming from a guy who is skeptical about anything from Detroit, and especially from GM. I was genuinely sad when they discontinued them. If I win the lottery, a used Chevy Volt is going to be o...
by spinningmagnets
Mar 21 2020 4:33pm
Forum: E-Bike General Discussion
Topic: A2B Octive/Metro purchase?
Replies: 52
Views: 1254

Re: A2B Octive/Metro purchase?

There are lots of them out there [for sale] if you look long enough
Fechter, if I swapped-in some good street tires, what is the fastest top speed for a frame like this? 30-MPH perhaps?

I'm occasionally doing 30-MPH on a beach cruiser frame (yikes!)
by spinningmagnets
Mar 20 2020 3:39pm
Forum: Motor Technology
Topic: Leaf / leafmotor / leafbike high efficiency 1500w motor
Replies: 1558
Views: 217761

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

Due to your weight, I would get the 1500W and add 10ml of ferro fluid.
by spinningmagnets
Mar 19 2020 5:03pm
Forum: E-Vehicles General Discussion
Topic: We ordered a 2020 Mini Cooper electric!
Replies: 22
Views: 813

Re: We ordered a 2020 Mini Cooper electric!

I have heard things about the gasoline-powered Mini-Cooper which were concerning, but this is one of the brands and models that will have a HUGE boost in reliability when they convert to electric. There's an old joke about owning a Jaguar, where you need to be able to afford two. One to drive, and o...
by spinningmagnets
Mar 19 2020 2:06pm
Forum: E-Bike Non-hub Motor Drives
Topic: Tsdz2 design flaw
Replies: 2
Views: 180

Re: Tsdz2 design flaw

Based on the pics, I would guess your assessment is likely correct.
by spinningmagnets
Mar 19 2020 12:17pm
Forum: Battery Technology
Topic: Help me troubleshoot this pack please. How are these voltages?
Replies: 50
Views: 826

Re: Help me troubleshoot this pack please. How are these voltages?

One cell group (or several groups) may have a diminished capacity. When the pack voltage gets down to the drop-off of the weakest cell group(s), then the whole pack will sag on hard acceleration. This is a common occurance in the spring, when ebikes have been stored at 4.2V per cell over the winter....
by spinningmagnets
Mar 19 2020 8:07am
Forum: E-Bike Technical
Topic: MOTOR GURU'S, CHIME IN!!!: Which of these motors has better performance?
Replies: 11
Views: 524

Re: MOTOR GURU'S, CHIME IN!!!: Which of these motors has better performance?

Amazon must manage millions of new postings every week, and they do not have any motor experts to help them sort the pictures and claims. The Amazon link you provided has three images in one pic. The pic of the outside of a motor looks like a brushless motor, and the pics of copper coils looks like ...
by spinningmagnets
Mar 18 2020 5:11pm
Forum: General Discussion
Topic: gas price thread
Replies: 774
Views: 71045

Re: gas price thread

A couple days ago it was $2.14/gal, gasoline is bought at auction in production blocks. Driving is way down in my region,and new shipments are scheduled to arrive, gotta clear out the last bit in the tanks...

Edit, it's a very dynamic time. On March 19th, it dropped to $1.96
GasPrice1.jpg
A
GasPrice1.jpg (223.05 KiB) Viewed 95 times