Search found 1223 matches

by flathill
Feb 09 2019 5:01am
Forum: Battery Technology
Topic: Tesla acquires maxwell - why Luke?
Replies: 24
Views: 964

Re: Tesla acquires maxwell - why Luke?

Big waste ah money Dry electrode tech is already on its way to China via ex Maxwell co inventor Linda Zhong An inventor with 38 released US patents, made Maxwell world #1 Ultracapacitor technology company by the famous dry electrode method. Entrepreneur @EnerTrode Inc • Employee Apr '11 - Present (7...
by flathill
Jan 22 2019 3:45am
Forum: EV Business World
Topic: EU imposing up to a 79% import duty on Chinese ebikes..
Replies: 1
Views: 252

Re: EU imposing up to a 79% import duty on Chinese ebikes..

Guy told me how it all works... He moved his plywood factory to China. You sell at or below cost when you export and then all your profit comes from export subsidies. He was getting an 18% export subsidy payment which means his profit margin was 18% if he sold at cost. 9 times higher than his 2% pro...
by flathill
Dec 13 2018 4:26am
Forum: E-Bike Non-hub Motor Drives
Topic: Sur-Ron - New Mid drive Bike
Replies: 3126
Views: 193132

Re: Sur-Ron - New Mid drive Bike

Thumb throttles r weaksauce. You can't ride trials with em which is the ultimate test. That was figured out in the 70s in france and austria. prove me wrong and post a video hopping up on a boulder
by flathill
Oct 30 2018 10:21pm
Forum: Forum Rules and Features
Topic: The future of our forum - facebook versus web forums
Replies: 46
Views: 2614

Re: The future of our forum - facebook versus web forums

Invision Power Board or something similar Kill Facebook now Don't try to migrate data or users just archive current site fresh start Killing facebook / a fresh start is much easier said than done for a lot of reasons. Invision is a paid message board that you can host yourself... answer me this.. W...
by flathill
Oct 30 2018 1:08am
Forum: Forum Rules and Features
Topic: The future of our forum - facebook versus web forums
Replies: 46
Views: 2614

Re: The future of our forum - facebook versus web forums

Invision Power Board or something similar

Kill Facebook now

Don't try to migrate data or users just archive current site

fresh start
by flathill
Jul 24 2018 2:12am
Forum: Forum Rules and Features
Topic: The forum got a haircut!
Replies: 30
Views: 1582

Re: The forum is getting a haircut! - archive your old PMs!

If you r trying to save half a gig by deleting PMs the forum needs a new sponsor. Sorry to be blunt
by flathill
May 03 2018 4:12am
Forum: EV Business World
Topic: Luna Cycle's "world's safest battery" lacking MSD
Replies: 33
Views: 2551

Re: Luna Cycle's "world's safest battery" lacking MSD

Just sent the shipper the MSDS for the raw cells. This is what boosted boards does when shipping to japan. This is more informative than any battery pack MSDS anyways.

Read a power tool battery msds. Most don't mention even the battery voltage let alone how the cells are arranged/packaged
by flathill
Apr 24 2018 3:29am
Forum: Battery Technology
Topic: Tesla Model 3 battery teardown!
Replies: 27
Views: 1683

Re: Tesla Model 3 battery teardown!

The precision/accuracy of 30 year old cnc wirebonding machine tech is more than enough for large cells. Today's machines are way overkill Simply use thermal camera with machine vision to flag bad "welds". Load test before encapsulation You can think of the bus bar layer as a flex pcb but instead of ...
by flathill
Apr 24 2018 2:11am
Forum: Battery Technology
Topic: Tesla Model 3 battery teardown!
Replies: 27
Views: 1683

Re: Tesla Model 3 battery teardown!

Note the insulating dividers between banks of parallel cells . The cells in parallel are ok if they do touch. Banks in serries cannot touch Contractors at the gigafactory went to the media yelling hysterical about defective model 3 battery packs. The media pays cash on the down low if you have any n...
by flathill
Mar 23 2018 5:38am
Forum: Motor Technology
Topic: End turns bad?
Replies: 246
Views: 11044

Re: End turns bad?

Why don't u ask Grigori Perelman

U weren't particularly rude to me but you were to my friends

so I'm done talking to you

Peace out
by flathill
Mar 23 2018 2:22am
Forum: Motor Technology
Topic: End turns bad?
Replies: 246
Views: 11044

Re: End turns bad?

visualize the flux passing thru the Riemann surface bounded by the coil's turns

I will be not replying further as you are too rude
by flathill
Mar 22 2018 4:37am
Forum: General Discussion
Topic: Self Driving Uber Kills Pedestrian
Replies: 116
Views: 5915

Re: Self Driving Uber Kills Pedestrian

you can see far ahead an oncoming car's headlights comes out diagonally from the taillight of the car ahead traveling in the same direction. this happens in the first second of the video at the same moment the woman/bike was in the shadows this was likely "trippy" for the neural net and "consumed" i...
by flathill
Mar 21 2018 7:08pm
Forum: Motor Technology
Topic: End turns bad?
Replies: 246
Views: 11044

Re: End turns bad?

water seeks its own level forget rotary motors and just think about a linear motor (unrolled rotary motor) imagine two moving magnets on the top of the assembly held securely 3 inches apart, each magnet a sqaure block 1x1x1 inch cubed, placed on rails such that they can only move left/right, one mag...
by flathill
Sep 16 2017 1:28am
Forum: E-Bike Non-hub Motor Drives
Topic: 4KW Bikee Bike Mid Drive System Made in Italy
Replies: 4
Views: 1442

Re: 4KW Bikee Bike Mid Drive System Made in Italy

Nice I hear you can hit 200nm.peak which is more than most hub motors and that before torque multiply (gears
by flathill
Sep 07 2017 10:02pm
Forum: E-Bike General Discussion
Topic: AVIAN featherweight mid drive
Replies: 111
Views: 13972

Re: AVIAN featherweight mid drive

Cool battery pack!

Are the holders/connectors made of aluminum? If so what about oxidation? Aluminum oxide is a insulator. I guess you could sand before assembly and hope it stays air tight...

Maybe you know this and they are nickel plated copper? :)
by flathill
Aug 14 2017 10:05pm
Forum: E-Bike General Discussion
Topic: What's the point of 1000+W ebikes ?
Replies: 147
Views: 9069

Re: What's the point of 1000+W ebikes ?

You can't "California Roll" stop signs on a motorcycle anymore without getting fined (If you do it often and daily) Il-legal ebikes are now the fastest way to get from point a to b. Officers aren't stupid they know your fugly ebike is above the legal limit but jaded officers know the difference betw...
by flathill
Jun 28 2017 11:28pm
Forum: Electric Aircraft
Topic: Farfles Electric Ultralight.
Replies: 196
Views: 20434

Re: Farfles Electric Ultralight.

Might want to hook up with Virgil in SF. He built an ultralight with his dad in high school
by flathill
Jun 26 2017 7:54pm
Forum: General Discussion
Topic: RIP Bob Carter / ES: bobc
Replies: 15
Views: 1477

Re: RIP Bob Carter / ES: bobc

video from Bob

camera blew over....

https://www.youtube.com/watch?v=j84oCTEISuo
by flathill
Jun 17 2017 6:18pm
Forum: Stand-up E-scooters and E-skateboards
Topic: Grin's weight sensing electric longboards #4 and 5, and kit!
Replies: 22
Views: 4110

Re: Grin's weight sensing electric longboards #4 and 5, and

lets see the new setup in action with agressive accel and braking on a rough roads (flat, uphill, downhill)

vid please & tanks
by flathill
Jun 14 2017 5:40pm
Forum: Battery Technology
Topic: LTC6811 Implementation Thread
Replies: 130
Views: 11369

Re: LTC6811 Implementation Thread

Might be cool to offer a wireless version in addition to CAN and/or SPI in the future

see: http://www.edn.com/design/power-managem ... eliability.

you don't have to work on it now just leave provisions
by flathill
Jun 09 2017 7:12pm
Forum: Large EV General Discussion
Topic: Runaway Throttle, Interlocks, and Regulation
Replies: 9
Views: 1194

Re: Runaway Throttle, Interlocks, and Regulation

Lucky the killacycle didn't actual kill bill (Billy Dube) When I worked on a drag bike we had a push button where your thumb goes on the handlebar. If you didn't press the push button continuously while using the throttle; the throttle would not work. Also protected from idiots coming up and crankin...
by flathill
Jun 07 2017 7:06pm
Forum: E-Vehicles General Discussion
Topic: Preowned Model S at EXTREMELY low cost
Replies: 29
Views: 2386

Re: Preowned Model S at EXTREMELY low cost

actually the depreciation is much less than similar BMW's and Merc's very strong used car market. A shit ton of <40k teslas sold out in 1 day. Now they added a few more Tesla is very smart with their CPO's....it costs them nothing to enable autopilot, ludicrous mode, and bump the pack capacity, etc....
by flathill
Jun 07 2017 6:50pm
Forum: E-Vehicles General Discussion
Topic: Preowned Model S at EXTREMELY low cost
Replies: 29
Views: 2386

Re: Preowned Model S at EXTREMELY low cost

The 85D 0-60 is official 4.4s after a firmware update, but a few 85D's have hit 3.9 see https://forums.tesla.com/forum/forums/official-85d-now-get-44-sec-060-mph-accelaration lowest cost 85D (as of June 7) https://www.tesla.com/preowned/5YJSA1H28FFP75190?redirect=no2015 20,279 miles P75190 $64,800 C...