WOT Poll - How often do you use wide open throttle?

[HuntingPudel]

I rarely use WOT since I got my dog. He’s almost always with me and I don’t want to throw him around. When he is not, I have been known to see how strong the floorboard is. ??

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[Regularmache]

At least 10 times per 750 miles.

 

[mkhuffman]

I rarely use WOT since I got my dog. He’s almost always with me and I don’t want to throw him around. When he is not, I have been known to see how strong the floorboard is. ??

So we need a new poll option: "always when without dog or wife."

 

[BalsaDust]

So we need a new poll option: "always when without dog or wife."

Actually the second time I mashed the trottle, my wife told me to do it!

Tony

 

[Shayne]

Seeming I drive all distance and 2 way highway below is the closes with one small adjustment.

Rarely, like when entering freeways or passing on 2-lane roads.

50 to 90 is my WOT and it is not rarely. Still learning it is an EV with no passing gear. Will be making a point of not looking for it anymore. Really not sure it matters as you can be driving a steady velocity listening to nursery rhymes and it could happen.

Last car to pass, here I go.
The line of cars drove down real slow.
The radio plays that forgotten song.

 

[JamieGeek]

Doesn't everyone just pulse-width-modulate driving? (either 0% or 100%...no inbetween)?

 

[Logal727]

Actually the second time I mashed the trottle, my wife told me to do it!

Tony

TMI

 

[ctenidae]

I only use WOT when the kids ask. Or if I want to. Or when the jackass who moved into the on-ramp lane to skip a few cars in traffic needs to not have an opening available. Or if the light turns green. Or yellow.

But yeah, never when my wife is in the car. She gets car sick, and you can never get that out of the upholstery.

 

[woody]

May have used it entering Highway. Otherwise , no reason - faster than anything else off the line.
Assume WOT(aka punch it) from dead start burns rubber? True ? Never tried.
(old, cheap sob who does not like throwing money away)
(tried it years ago w/ 428 4bbl, positraction and others [long ago]: just burned rubber)


Have fun driving in your MME

 

[mkhuffman]

May have used it entering Highway. Otherwise , no reason - faster than anything else off the line.
Assume WOT(aka punch it) from dead start burns rubber? True ? Never tried.
(old, cheap sob who does not like throwing money away)
(tried it years ago w/ 428 4bbl, positraction and others [long ago]: just burned rubber)


Have fun driving in your MME

I have spun my tires smashing the go pedal at 30 mph. So much fun!

 

[Mach1E]

How about “whenever I have a new passenger.”

Everyone seems to want to know what it can do.

 

[mwtechy]

Two things to know

the contractors are inside hermetically sealed cylinders filled with inert gas. Looking at them tells you nothing… opening them is analogous to opening an incandescent light bulb… once you have opened it, it’s done.

measuring voltage across the contractors tells you if they are damaged

Where did you confirm this from? Are there any specs on it? From what I've read online they could be or might not be. Several manufacturers do not seal them because sealed means there is no where for the hot gas to transfer the heat away from the contactor. Sealing them really is only to dampen the arc during shut off from my understanding. Now the entire battery case is sealed for sure but I don't know about the actual contactors.

Edit: Finally found it here https://www.macheforum.com/site/thr...f-the-hv-battery-contactors.19114/post-452630

Here's a link to the general product offering for these contactors: https://www.te.com/usa-en/products/...ge-contactors-evc-500-500l.html?tab=pgp-story
And a link to one of the specific part numbers that are used in the car, with a technical datasheet drawing: https://www.te.com/usa-en/product-2342963-4.html

 

[woody]

the 428 would push into your seat when punched at Highway speed.
Columbus to Wheeling at 100mph whole way. Scared the crap out of my buds.
(young and stupid, pre military, pre frontal cortex [not] fully developed)

 

[gpgrim]

Where did you confirm this from? Are there any specs on it? From what I've read online they could be or might not be. Several manufacturers do not seal them because sealed means there is no where for the hot gas to transfer the heat away from the contactor. Sealing them really is only to dampen the arc during shut off from my understanding. Now the entire battery case is sealed for sure but I don't know about the actual contactors.

Edit: Finally found it here https://www.macheforum.com/site/thr...f-the-hv-battery-contactors.19114/post-452630

Here's a link to the general product offering for these contactors: https://www.te.com/usa-en/products/...ge-contactors-evc-500-500l.html?tab=pgp-story
And a link to one of the specific part numbers that are used in the car, with a technical datasheet drawing: https://www.te.com/usa-en/product-2342963-4.html

The HV contactors are shown in the snap below taken from Munro's Live video "Mach-E Battery Exposed." Potting the contactor electrodes in an Inert environment prolongs their life by preventing chemical reactions with corrosive elements in the environment and shortening their life. Edit: 5-Jul. I should also mention the inert gas will have favorable field strength properties for minimizing electors arcing to open/close, but this will happen regardless and can't be completely eliminated.

Contactors are standard elements in motor control systems in industrial applications, so the tech isn't that unknown. You can readily find these components with a google search and you will find the coils and electrodes are potted in some type of polyethylene enclosure with the circuit terminals protruding.

Other than people's opinion, I've not read anything on this forum that definitively supports the conclusion that the problem is with the contactor electrodes.

As I have understood things, the contactors have failed in both the open and closed positions, which could point to issues with the coil circuitry, which is susceptible as well.

That not withstanding there will always be some measure of infant mortality in components such as these, and one reason for the QA side of any biz is to generate homework problems for undergraduate stem majors on calculating confidence intervals on a level of 1% failure in the wild, given the sample taken in house.

As for the battery pack details. I'd also suggest the accompanying episode on the "Battery Tray and Battery Cell Features." It tears down to the individual Li-ion cell level.

 

[ocr_salty]

Never did until the recall was announced then tried it once to see what the car would do, don't need to do it again now.

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