Search found 3148 matches

by MitchJi
Nov 23 2019 9:17am
Forum: E-Vehicles General Discussion
Topic: Short video of Tesla cyberquad - does anyone have more information?
Replies: 1
Views: 282

Short video of Tesla cyberquad - does anyone have more information?



https://youtu.be/RQ3Vmn6__CI

I’d like more information about the specs.

I’d love prices or availability.
by MitchJi
Nov 07 2019 11:34am
Forum: Alternative Energy
Topic: How can I get 110ac from a ZENN runs at 69-80v dc
Replies: 6
Views: 535

Re: How can I get 110ac from a ZENN runs at 69-80v dc

Watch this video for how this guy is trying to access the 12V system on a Tesla model S. It may give you a few ideas. https://www.youtube.com/watch?v=2nMs_DwveqA Thank you! I’m currently planning to buy either one or two 50amp 70-80v to 12v dc/dc converters from thunderstruck motors for $125 each. ...
by MitchJi
Nov 02 2019 3:58pm
Forum: Alternative Energy
Topic: How can I get 110ac from a ZENN runs at 69-80v dc
Replies: 6
Views: 535

Re: How can I get 110ac from a ZENN runs at 69-80v dc

Change of plans. I am now planning on using inexpensive EVs for DIY powerwalls. I think the cheapest way to do DC to AC conversion is to use 12v DC to 110v AC inverters. So now I need a recommendation for an affordable 72-96v DC to 12v DC converter. I can use the ZENNs 12 v dc output if its sufficie...
by MitchJi
Oct 30 2019 12:28pm
Forum: Alternative Energy
Topic: How can I get 110ac from a ZENN runs at 69-80v dc
Replies: 6
Views: 535

How can I get 110ac from a ZENN runs at 69-80v dc

I can’t find an invertor that converts 70-80 volt dc to 110 ac. Lots of units that do 12-48v dc.


I need to run a snall boiler and the associated pump that supplies radiant radiators for a small house.

I’m cold due to a power outage 4th day.





M
by MitchJi
Oct 28 2019 5:57pm
Forum: Large EV General Discussion
Topic: Video link Rich Rebuilds M3 LR Dual motor $25k!
Replies: 1
Views: 378

Video link Rich Rebuilds M3 LR Dual motor $25k!

Rich rebuilds documents a dual motor long range M3 from a wreck for $25k, list price is $55k!
by MitchJi
Oct 23 2019 10:08am
Forum: Items Wanted
Topic: Help Wanted:2000 HondaInsightBatteryPack InstallSF Bay Area
Replies: 5
Views: 573

Re: Help Wanted:2000 HondaInsightBatteryPack InstallSF Bay Area

Balmorhea wrote:
Oct 23 2019 2:06am
MitchJi wrote:
Oct 22 2019 5:25pm
I have ALS and will definitely need someone to install it.
You are going to drive it?
Its my wife’s car.

I haven’t driven in a couple of years but I can drive well if necessary.
by MitchJi
Oct 22 2019 5:25pm
Forum: Items Wanted
Topic: Help Wanted:2000 HondaInsightBatteryPack InstallSF Bay Area
Replies: 5
Views: 573

Re: Help Wanted:2000 HondaInsightBatteryPack InstallSF Bay Area

They are sending us a replacement battery even though it is out of warranty!

I have ALS and will definitely need someone to install it. Supposed to arrive in three-five weeks. About November 15, 2019 to December 15, 2019.
by MitchJi
Oct 17 2019 6:06pm
Forum: Stand-up E-scooters and E-skateboards
Topic: recommendation wanted electric trike for someone with ALS
Replies: 3
Views: 343

Re: Recommendation wanted kick scooter or escooter for someone with ALS

My wife is correct. I’m too weak, to ride a push scooter!

Now I’m planning to buy an electric trike. I’m hoping that someone here will be able to recommend a good alternative. An very important factor is excellent low speed throttle control.

Thanks!
by MitchJi
Oct 13 2019 4:01pm
Forum: Battery Technology
Topic: New Tesla battery connection patent
Replies: 3
Views: 293

Re: New Tesla battery connection patent

It’s a strange link. An extract from a pdf. It worked on my iPad. Replaced it with a link to the page and the downloaded image on my gdrive. If neither of those work for you let me know.

Maybe part of the problem is that it’s a 13 just npage image, which I just noticed .
by MitchJi
Oct 13 2019 1:32pm
Forum: Battery Technology
Topic: New Tesla battery connection patent
Replies: 3
Views: 293

New Tesla battery connection patent

Looks like they are using plates with tabs instead of welding. If they start using these in production it should be possible to either use the parts or copy them to replace welding on diy packs. Link to the patent application: http://www.freepatentsonline.com/y2019/0312251.pdf Link to the picture on...
by MitchJi
Oct 11 2019 3:54pm
Forum: Stand-up E-scooters and E-skateboards
Topic: recommendation wanted electric trike for someone with ALS
Replies: 3
Views: 343

Re: Recommendation wanted kick scooter or escooter for someone with ALS

I bought a Mongoose EXpo for $53.

My wife thinks my balance isn’t good enough to ride it.

I think that I might not be strong enough to push it, in that case I’m planning to buy an electric scooter.

[Url]https://www.mongoose.com/products/expo-scooter[/Url]
by MitchJi
Oct 11 2019 1:22pm
Forum: Stand-up E-scooters and E-skateboards
Topic: recommendation wanted electric trike for someone with ALS
Replies: 3
Views: 343

recommendation wanted electric trike for someone with ALS

Hi, I have ALS and I need something to get from my car to a swimming pool I have the symptoms of ALS. I need to be able to use a pool therapeutically 3-6 days per week. Meir pointed out that I walked backwards in your pool as well as I did in his office six years ago. He thinks that within three mon...
by MitchJi
Oct 07 2019 4:11pm
Forum: E-Vehicles General Discussion
Topic: Taycan video with some useful information
Replies: 36
Views: 1915

Re: Taycan video with some useful information

We are getting to the point were the real limitations for acceleration is going to be suspension setup and tire compound. How much anti-squat is built into the suspension and how 'sticky' the tires are. Drag cars are setup with enough anti-squat that they actually raise up in the rear under acceler...
by MitchJi
Sep 08 2019 5:45pm
Forum: General Discussion
Topic: Tesla switches to permanent magnet reluctance motors and sees range gains
Replies: 19
Views: 2069

Re: Tesla switches to permanent magnet reluctance motors and sees range gains

PM motors at full load can achieve ~97% when everything is done perfectly. When cruising at a light load, they might be <~90% SRPM motors can achieve ~97% when everything is done right at full load, but then also cruise at light loads with minimal efficiency hit. Why you don't want one for an ebike...
by MitchJi
Sep 08 2019 1:34pm
Forum: Motor Technology
Topic: Switched reluctance motors
Replies: 11
Views: 587

Re: Switched reluctance motors

Toorbough ULL-Zeveigh wrote:
Sep 06 2019 2:27pm

SR is not the be all end all holy grail that lukeforphysics seems to think.
Thanks for the link? Took me a while to check it because I thought that you were criticizing Luke.
by MitchJi
Sep 07 2019 3:21pm
Forum: Motor Technology
Topic: Switched reluctance motors
Replies: 11
Views: 587

Re: Switched reluctance motors

[quote]by"Toorbough ULL-Zeveigh" SR is the top pick from an economic/business standpoint not an engineering one. but people not in the know that look to others for guidance will think "well, if Tesla is doing it, it must be good."[/quote] Since when does engineering ignore economics? [quote]just lik...
by MitchJi
Sep 07 2019 2:09pm
Forum: E-Bike General Discussion
Topic: UBCO reveals new 50 mph (80 km/h) electric trail bike with pedals
Replies: 30
Views: 921

UBCO FRX1 Freeride Trail Bike featuring motorcycle level specs, speeds of up to 50 mph functional bicycle pedals

https://electrek.co/2019/09/06/ubco-frx1-electric-trail-bike-50-mph/ when you thought it couldn’t get any wilder in the electric bicycle space, this happens. UBCO has just revealed their upcoming UBCO FRX1 Freeride Trail Bike featuring motorcycle level specs, speeds of up to 50 mph (80 km/h), and f...
by MitchJi
Sep 06 2019 4:07pm
Forum: Motor Technology
Topic: Switched reluctance motors
Replies: 11
Views: 587

Re: Switched reluctance motors

Economics is important. And consider the range increase they got on the new MS-MX. I thought that power per size and weight would be considered important here. As for Tesla using small form factor cells they’ve learned to make packs at a very low additional,cost. We’ll see what they announce or batt...
by MitchJi
Sep 06 2019 3:40pm
Forum: Battery Technology
Topic: Podcast with John Goodenough
Replies: 1
Views: 172

Podcast with John Goodenough

Interesting interview with John Goodenough. I enjoyed learning some things about how batteries work.

https://soundcloud.com/cenmag/ep-22-i-d ... goodenough