Endless Sphere

Hi Arlo, I ask because I took interest in the subject when Doctorbass first posted in 2009, and we did a lot of testing and found it to be very useful, especially on sensorless systems. We see more torque and efficiency in Wye, and of course much more speed in Delta. We spent a whole lot of time an...

FFR Trikes wrote: ↑

Jan 17 2019 10:53pm

Back from the DEAD!

Is anyone still working on the Delta/Wye switching?



Tommy

Why would you want this?
I ask this because many thought there was benefits that were later found to be untrue.

Hello EDG123, I seem to have the same problem. Although unlike your case, I just one GEN4 and I am facing the exact same problem after uploading a new DCF file. I am not able to get the SEVCON talk with the CAN and the helper says no nodes on the BUS. So the question is how exactly did you manage t...

No actual source here...just some thoughts.... I just read an article on how brine is a massive problem across the world for countries that turn salt water from the sea to fresh drinking water. There's like billions of gallons produced every day from it... I don't see it. All they need to do is pul...

Tab cooling is the most effective way to cool a pack but other than air convection you're limited to low thermal conductivity polymers stuck to the battery terminals. Not only that you cant seal a battery completely from the elements when you aircool. This is the perpetual dillemma. Base cooling is...

Guys I read a paper showing how cooling the Tabs is the most important thing to do in cooling pouch cells.

marcos wrote: ↑

Jan 10 2019 9:49pm

Arlo1 wrote: ↑

Jan 10 2019 8:13pm

Wow you have had this thread going for a while.

Cool. Now I need to read it

I've read all your threads, I deserve it! :p

Lol I bet some of that stuff is OLD and makes me cringe when I read my really old posts... I have learnt so much since then.

Wow you have had this thread going for a while.

Cool. Now I need to read it

Thanks for the answer. 38 miles is a good time but I’d always want at least 50. Tom Man you 100% missed the point. You can get 200 miles if you want. With a dirt bike its about ride time. You can get X amount of time in a day on the bike. For me its 2 hours or hard riding and I have 1/2 a charge le...

Example of the open source world.

Okay, this is all over my head. Another comment/question. They did say that the magnets exploded when they hit them with a hammer. That means that they are aligned in a way that they are pushing themselves apart . What does that mean? It depends on the plane the magnet fractures in. In one plane, t...

I agree Luke. And Mitch there is no relationship to voltage and charge rates. You can have 1/2 the voltage and 2x the amps or 2X the voltage and 1/2 the current....

What is the most range you gotten out of a ride....meaning a good fun ride, not just max range? Looks like a good time always in your pictures. Tom With my Zeros I don't have odometers. I can tell you I have done 5.5 hours of riding and come back with over 1/3 charge left. The type of riding you do...

Lebowski, Another thing to consider is making sure nobody else uses the same system. I meen what you have might be the same Idea as TI instaspin.

The path forward is open source. The more you share the more others want to help. Patreon is a good platform. Jordan Peterson and another guy are bringing out a new platform as well. Jordan Peterson shared all of his lectures for free on you tube 20+year's worth and people are giving him close to $1...

Oh wow. That level of colorblindness must make life a challenge. Btw its not just the color blindness its also the little thin circle around the icon that's so small it makes it hard to tell. I can see the difference in the color but its such a small thing its hard to tell. I think the whole Icon u...

Sandy Monroe discovered that the Tesla model three permanent magnet motor uses a Hallbach Array! That means the Square root of two efficiency and power increase! That is 1.41! Huge difference! Oops 😬, fixed incorrect tags! He was also very impressed with the HVAC system which he mentions is reviewe...

Great work lebowski.

Bahaha like always reaching to try to turn good news into bad news. 4th 1/4 will be profitable and anoounced soon. Wana place a wager?

Also they went through extreme costs cutting measures and streamlined production.

Thank you. I was hoping the 300hp would be available in a "burst mode" or scramble type of configuration. Aka like when drag racing. Thank you again for the reply. Sent from my SM-N910V using Tapatalk Its a use at your own risk kit. You might get 300Hp. I got close to 400hp and forgot to turn the c...

lester12483 wrote: ↑

Dec 30 2018 12:55pm

Hopefully Tesla has a profitable year in 2019.

Elon said they will be profitable for now on. Other than when big re-payments come due. I think a big re-payment is due soon. But I bet that 1/4 they will just break even. All the rest will be profitable.

This is floating around lol.

If you order Fuji IGBTs we should get a group buy going. They have a 24 week lead time right now. I was looking at possibly getting 100 of them. Another point is the PWM frequency will effect the noise but you want to keep it low for lower switching losses. But you need the PWM to be high enough to ...

jonescg wrote: ↑

Dec 08 2018 7:11am

Just some pictures of the Prelude battery coming together:
4 done and a spare.jpg

Very nice man, Did you cycle each cell to weed out the duds?

If you watch the video you see he took delivery in November so its still a fairly early production car. And it might have been a car sitting on a lot for a while before he ordered it. Sure, but by October Tesla had already produced over 100k M3s and were producing over 4000 per week. ... .....so it...