Search found 11456 matches

by spinningmagnets
Dec 05 2021 11:23am
Forum: EBike General Discussion
Topic: Funny stickers and t-shirts about electricity
Replies: 5
Views: 124

Re: Funny stickers and t-shirts about electricity

T-Shirts
"Resistance is not futile, its voltage divided by current"
https://www.pinterest.com/pin/558868634995760968/

"I'm silently judging your wiring"

"I love my strippers" [*shows a wire stripper]

"Electricians do it without shorts until it Hertz"
by spinningmagnets
Dec 04 2021 2:57pm
Forum: EBike General Discussion
Topic: Leaf / leafmotor / leafbike high efficiency 1500w motor
Replies: 2110
Views: 269154

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

"...Is the drag introduced by adding too much Statorade caused by the carry fluid or the iron? I understand some people will top off their Statorade..." The stator is stationary (*obviously), and the rotor spins. As more Statorade / FF is added, more of the friction of parts movement is en...
by spinningmagnets
Dec 04 2021 2:53pm
Forum: EBike General Discussion
Topic: Leaf / leafmotor / leafbike high efficiency 1500w motor
Replies: 2110
Views: 269154

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

Add a temp sensor, and when the stator is at 140F, you are avoiding max resistance. You can accelerate faster when going to the higher amps that result in a higher stator temp than 140F, but...it will drain your battery very fast, since you would be converting a lot of battery watts into waste-heat...
by spinningmagnets
Dec 04 2021 9:34am
Forum: EBike General Discussion
Topic: Funny stickers and t-shirts about electricity
Replies: 5
Views: 124

Funny stickers and t-shirts about electricity

StickerElectrical.jpg https://www.teepublic.com/sticker/21581185-reddy-kilowatt?feed_sku=21581185D16V&utm_source=facebook_instagram&utm_medium=paid_social&utm_campaign=[FI]_[web]_[g.USA]_[l.eng]_[rem]_[oCPM]_DPA_NonSale_BAU_DR&utm_content=[C.6274113783886]%20[AG.6277447089486]%20[AD...
by spinningmagnets
Dec 04 2021 8:35am
Forum: EBike Technical
Topic: Sag from cells or from heat/resistance?
Replies: 13
Views: 205

Re: Sag from cells or from heat/resistance?

If you want to reduce voltage sag in a pack, nothing comes close to using the copper/nickel sandwich for the series connections, and end-collectors.

https://www.endless-sphere.com/forums/v ... 4&t=108006
by spinningmagnets
Dec 04 2021 8:31am
Forum: EBike General Discussion
Topic: Leaf / leafmotor / leafbike high efficiency 1500w motor
Replies: 2110
Views: 269154

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

I was very pro-ATF until FF came along. For me the deciding factor was that no matter how diligent you are in sealing up the edge of the motor side-plates, the ATF would find some way to leak a drop or two on occasion. FF is constantly held in place by magnetism. I believe he performance would be ne...
by spinningmagnets
Dec 03 2021 8:10pm
Forum: Electric Aircraft
Topic: Rolls-Royce world’s fastest all-electric aircraft
Replies: 14
Views: 2630

Re: Rolls-Royce world’s fastest all-electric aircraft

Liquid Hydrogen was tried, wasn't economically feasible. Unless there's some type of major breakthrough, I don't see it becoming viable for aircraft.

https://en.wikipedia.org/wiki/Lockheed_CL-400_Suntan
by spinningmagnets
Dec 03 2021 12:28pm
Forum: Battery Technology
Topic: Understanding Series amperage load across a pack.
Replies: 11
Views: 145

Re: Understanding Series amperage load across a pack.

The series count determines the pack voltage. The parallel count determines the pack amps and range. 7P with a 100A BMS limit means if you truly draw 100A, then you are taking 14.5A from each cell. Of course that is only the temporary peak amps during acceleration. During any cruise-phase, the amp-d...
by spinningmagnets
Dec 03 2021 8:23am
Forum: Electric Aircraft
Topic: Rolls-Royce world’s fastest all-electric aircraft
Replies: 14
Views: 2630

Re: Rolls-Royce world’s fastest all-electric aircraft

Its easy to take potshots at the corporatocracy, as I do often. They make it easy by occasionally being evil. That being said... The "Covid economy" has caused a dip in spending worldwide. Corporations have been equipped to conduct meetings over the internet [*Zoom, etc] for a couple decad...
by spinningmagnets
Nov 30 2021 11:08am
Forum: EBike General Discussion
Topic: Are footpegs superior if you don't pedal?
Replies: 161
Views: 9036

Re: Are footpegs superior if you don't pedal?

It appears that neither side of this discussion will *ever* concede anything. People ride the type of frame they like, without needing to understand the physics behind the way it handles.

Just a suggestion, but...why not just agree to disagree?
by spinningmagnets
Nov 29 2021 7:57pm
Forum: General Discussion
Topic: Ivermectin/Covid info
Replies: 225
Views: 4359

Re: Ivermectin/Covid info

I've been vaccinated and I am "pro-vaccine". That being said, Ivermectin doesn't hurt when added to any current treatment protocol. "The FDA-approved drug ivermectin inhibits the replication of SARS-CoV-2" https://www.sciencedirect.com/science/article/pii/S0166354220302011 How it...
by spinningmagnets
Nov 29 2021 12:45pm
Forum: General Discussion
Topic: Ivermectin/Covid info
Replies: 225
Views: 4359

Re: Ivermectin/Covid info

Biden now has his trillion-dollar Covid relief bill, to mirror the Trump trillion-dollar relief bill. The vaccine doses do not cost the patient anything, but the five global pharma companies are again recieving hundreds of millions of dollars for the vaccines and boosters. The $530 per course fee is...
by spinningmagnets
Nov 23 2021 3:51pm
Forum: General Discussion
Topic: Bitcoins
Replies: 362
Views: 68994

Re: Bitcoins

I'm bullish on half a dozen cryptocoins. This past year they've performed better than my retirement account. I don't have a lot of money in them, just what I can "afford to lose". Theres a thread I started about inflation, and I have collected several "hyper inflation" bills, lik...
by spinningmagnets
Nov 22 2021 3:27pm
Forum: Battery Technology
Topic: APL's Pressure Contact Battery box
Replies: 142
Views: 3871

Re: APL's Pressure Contact Battery box

The contacts on authentic Anderson Power Pole connectors are silver-plated copper-core. The "wiping" action of insertion is enough to clean the tarnish.

The fakes are aluminum core with zinc-plating.
by spinningmagnets
Nov 22 2021 1:17pm
Forum: EBike General Discussion
Topic: Myths about tires (part 1)
Replies: 97
Views: 2047

Re: Myths about tires (part 1)

Lets all take a breather for a few days.
by spinningmagnets
Nov 21 2021 3:27pm
Forum: EBike Technical
Topic: CYC X1 Pro Gearing (Off Road)
Replies: 1
Views: 133

Re: CYC X1 Pro Gearing (Off Road)

Thanks for posting this info, it's very useful!
by spinningmagnets
Nov 21 2021 3:15pm
Forum: Battery Technology
Topic: APL's Pressure Contact Battery box
Replies: 142
Views: 3871

Re: APL's Pressure Contact Battery box

I like the idea. Looks like 13S / 48V. It looks like nickel strips for the contact and also the "leaf spring" action.

Spring steel is best for the spring, and copper that has a thin nickel plate is best for contacts (actually, silver-plate is best, but...)
by spinningmagnets
Nov 21 2021 11:33am
Forum: General Discussion
Topic: E.S. Quotable Quotes !
Replies: 880
Views: 181016

Re: E.S. Quotable Quotes !

from Triketech
Like to actually pedal and shift gears? Take Mid Drive off the list. No matter the unit, they simply suck when it comes to a rider who wants to ride hard. Derailleurs, IGH's no matter, they all shift like their passing a brick past their anuses with a Mid Drive.
by spinningmagnets
Nov 20 2021 8:39pm
Forum: Motor Technology
Topic: Ford ELUMINATOR Electric Motor
Replies: 4
Views: 218

Re: Ford ELUMINATOR Electric Motor

Magna is also making motor/controller modules that can be swapped-in...

https://www.magna.com/products/power-vi ... chnologies
by spinningmagnets
Nov 20 2021 12:29pm
Forum: Alternative Energy
Topic: 4S LiFePO4 as a 12V system
Replies: 27
Views: 9168

Re: 4S LiFePO4 as a 12V system

I'm watching the developments with "drain down" cell balancers. When a 14S lithium-Ion pack gets fully charged to 58.8V, a "dumb" charger would put one cell at 58.9V and another at 58.7V...and that's one of the reasons I charge to 90%, because of the variations in mass produced e...
by spinningmagnets
Nov 20 2021 9:35am
Forum: EBike General Discussion
Topic: Dedicated E-bike Downhill/Freeride frame and build
Replies: 37
Views: 18385

Re: Dedicated E-bike Downhill/Freeride frame and build

Sounds like he's in the middle of negotiating a business deal.
by spinningmagnets
Nov 18 2021 3:37pm
Forum: Battery Technology
Topic: APL's Pressure Contact Battery box
Replies: 142
Views: 3871

Re: APL's Pressure Contact Battery box

Since silver is expensive, cover everything but the contact point with some kind of brushed-on rubber.