Search found 1232 matches
- Nov 01 2020 1:49pm
- Forum: Electric Aircraft
- Topic: Farfles Electric Ultralight.
- Replies: 236
- Views: 42047
- Sep 26 2020 2:21am
- Forum: General Discussion
- Topic: Jack Rickard Jr. next level
- Replies: 9
- Views: 745
- Sep 15 2020 3:04am
- Forum: General Discussion
- Topic: Jack Rickard Jr. next level
- Replies: 9
- Views: 745
- Mar 17 2019 12:30am
- Forum: E-Bike Technical
- Topic: 2018 Torque Arm Tests, Splined Interface Design and Tabbed Washers
- Replies: 176
- Views: 24298
Re: 2018 Torque Arm Tests, Splined Interface Design and Tabbed Washers
.... there just isn't the space for a normal socket head or the meat to do a recessed socket head (arm piece is just 1/8" thick).... What I am seeing is two exposed screws on the bottom of the arm that could be changed to hex bolts. That won't help. Cap screws on a flat surfaced hole are indet...
- Mar 15 2019 12:46am
- Forum: E-Bike Technical
- Topic: 2018 Torque Arm Tests, Splined Interface Design and Tabbed Washers
- Replies: 176
- Views: 24298
Re: 2018 Torque Arm Tests, Splined Interface Design and Tabbed Washers
I wonder if the flat head taper causes the fastener to stretch and loosen given the back and forth torque creates a wedge lever. You might get away without the second spline with socket heads. Lug nuts on car wheels are tapered but they have much more meat than a flat head screw Look at ur disc brak...
- Mar 10 2019 8:48pm
- Forum: Motor Technology
- Topic: Optimal Hub Motor design? Break down of BionX D-Series
- Replies: 98
- Views: 22692
Re: Optimal Hub Motor design? Break down of BionX D-Series
Ultrasonic xacto knife will open it right up. Honda makes good ones
- Mar 10 2019 4:24am
- Forum: E-Vehicles General Discussion
- Topic: Reflections echo reflexions
- Replies: 16
- Views: 1600
Re: Reflections echo reflexions
75-10 motor
That's in millimeters
That's in millimeters
- Mar 10 2019 3:46am
- Forum: E-Vehicles General Discussion
- Topic: Reflections echo reflexions
- Replies: 16
- Views: 1600
Re: Reflections echo reflexions
Or belt drive sprocket pulley with internal drum brake like they had in 1788
- Mar 10 2019 3:45am
- Forum: E-Vehicles General Discussion
- Topic: Reflections echo reflexions
- Replies: 16
- Views: 1600
Re: Reflections echo reflexions
Or belt drive sprocket pulley with internal drum brake like they had in 1788
- Mar 09 2019 5:20am
- Forum: E-Vehicles General Discussion
- Topic: Reflections echo reflexions
- Replies: 16
- Views: 1600
- Feb 09 2019 5:01am
- Forum: Battery Technology
- Topic: Tesla acquires maxwell - why Luke?
- Replies: 24
- Views: 2018
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...
- Jan 22 2019 3:45am
- Forum: EV Business World
- Topic: EU imposing up to a 79% import duty on Chinese ebikes..
- Replies: 4
- Views: 1725
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...
- Dec 13 2018 4:26am
- Forum: E-Bike Non-hub Motor Drives
- Topic: Sur-Ron - New Mid drive Bike
- Replies: 5341
- Views: 591743
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
- Oct 30 2018 10:21pm
- Forum: Forum Rules and Features
- Topic: The future of our forum - facebook versus web forums
- Replies: 135
- Views: 35221
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...
- Oct 30 2018 1:08am
- Forum: Forum Rules and Features
- Topic: The future of our forum - facebook versus web forums
- Replies: 135
- Views: 35221
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
Kill Facebook now
Don't try to migrate data or users just archive current site
fresh start
- Jul 24 2018 2:12am
- Forum: Forum Rules and Features
- Topic: The forum got a haircut!
- Replies: 30
- Views: 5890
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
- Jun 21 2018 7:54pm
- Forum: Items Wanted
- Topic: Want Tesla Model S battery module coolant fitting or tubing with fitting
- Replies: 2
- Views: 563
- May 03 2018 4:12am
- Forum: EV Business World
- Topic: Luna Cycle's "world's safest battery" lacking MSD
- Replies: 33
- Views: 7430
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
Read a power tool battery msds. Most don't mention even the battery voltage let alone how the cells are arranged/packaged
- Apr 24 2018 3:29am
- Forum: Battery Technology
- Topic: Tesla Model 3 battery teardown!
- Replies: 27
- Views: 3048
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 i...
- Apr 24 2018 2:11am
- Forum: Battery Technology
- Topic: Tesla Model 3 battery teardown!
- Replies: 27
- Views: 3048
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...
- Mar 23 2018 5:38am
- Forum: Motor Technology
- Topic: End turns bad?
- Replies: 247
- Views: 24832
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
U weren't particularly rude to me but you were to my friends
so I'm done talking to you
Peace out
- Mar 23 2018 2:22am
- Forum: Motor Technology
- Topic: End turns bad?
- Replies: 247
- Views: 24832
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
I will be not replying further as you are too rude
- Mar 22 2018 4:37am
- Forum: General Discussion
- Topic: Self Driving Uber Kills Pedestrian
- Replies: 116
- Views: 10513
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 &q...
- Mar 21 2018 7:08pm
- Forum: Motor Technology
- Topic: End turns bad?
- Replies: 247
- Views: 24832
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...
- Sep 21 2017 3:38am
- Forum: Motor Technology
- Topic: Can electromagnets be halbach arrays
- Replies: 9
- Views: 6608