Game Changer Page 3 with video of 1700amps!!!!

Electric Motors and Controllers
Buk___
100 W
100 W
Posts: 229
Joined: Jul 28, 2017 5:59 pm

Re: Game Changer Page 3 with video of 1700amps!!!!

Post by Buk___ » Dec 06, 2017 12:18 pm

Arlo1 wrote:
Feb 02, 2016 10:45 pm
... maybe with some silver grease under that so they conduct well.
Have you (anyone here?) tried Stabilant 22 contact enhancer for this purpose?

User avatar
Arlo1
100 GW
100 GW
Posts: 8494
Joined: Apr 26, 2009 10:36 pm
Location: Nanaimo BC Canada
Contact:

Re: Game Changer Page 3 with video of 1700amps!!!!

Post by Arlo1 » Dec 06, 2017 4:55 pm

Buk___ wrote:
Dec 06, 2017 12:18 pm
Arlo1 wrote:
Feb 02, 2016 10:45 pm
... maybe with some silver grease under that so they conduct well.
Have you (anyone here?) tried Stabilant 22 contact enhancer for this purpose?
Looks interesting!
My Leaf motor controller build. https://endless-sphere.com/forums/viewto ... 27#p963227
My YSR build http://www.youtube.com/watch?v=BRo8r5g4NBg
RC and most types of Lithium batteries you MUST know your individual cell voltages charging and discharging.
Don't keep them were you cant afford smoke or fire!
Never above 4.2v never below 2.7v EVER!!!
HI power controller design. Game Changer

Buk___
100 W
100 W
Posts: 229
Joined: Jul 28, 2017 5:59 pm

Re: Game Changer Page 3 with video of 1700amps!!!!

Post by Buk___ » Dec 06, 2017 5:06 pm

Arlo1 wrote:
Dec 06, 2017 4:55 pm
Looks interesting!
Horribly expensive, but a tiny amount goes a very long way, seemingly lasts for ever (at least 15 years they claim), and it works miracles on PC/server cards, which is where I first used it years ago.

It's also very strange stuff. You can safely wipe it along a set of edge connectors without trying to individually dab each contact and it won't cause shorts. Something about it being initially non-conducting and only conducting when an electric field forms across it.

I also read that it has been used for applications up to 30,000 amps, which should cover most situations! :)

User avatar
flippy
100 W
100 W
Posts: 196
Joined: Aug 12, 2015 3:07 pm

Re: Game Changer Page 3 with video of 1700amps!!!!

Post by flippy » Dec 08, 2017 7:19 am

its stupidly expensive and is not a solution for having crappy connections. just get better connectors to solve the problem at its base. if you are really paranoid you can get milspec stuff.

Buk___
100 W
100 W
Posts: 229
Joined: Jul 28, 2017 5:59 pm

Re: Game Changer Page 3 with video of 1700amps!!!!

Post by Buk___ » Dec 08, 2017 9:51 am

flippy wrote:
Dec 08, 2017 7:19 am
if you are really paranoid you can get milspec stuff.
It IS milspec stuff. US Army, Navy and Airforce, Nasa, Nato, .... It's the real deal.

User avatar
flippy
100 W
100 W
Posts: 196
Joined: Aug 12, 2015 3:07 pm

Re: Game Changer Page 3 with video of 1700amps!!!!

Post by flippy » Dec 08, 2017 2:52 pm

i am talking about using proper milspec connectors rated for the task, not stuff to fix dodgy undersized connectors.

Buk___
100 W
100 W
Posts: 229
Joined: Jul 28, 2017 5:59 pm

Re: Game Changer Page 3 with video of 1700amps!!!!

Post by Buk___ » Dec 08, 2017 7:31 pm

flippy wrote:
Dec 08, 2017 2:52 pm
i am talking about using proper milspec connectors rated for the task, not stuff to fix dodgy undersized connectors.
The military use it on their military spec connectors; for 15 years of corrosion free, vibration proof connections.

NASA use it on their space spec connectors to ensure 15 years of good connections through the vagaries of extreme vibrations during launch and temperature swings of 4-500°K up to once every two hours. And because there are no(*) service calls in space.

It's well tested, well proven and widely used, and for much more than "fixing dodgy connectors" -- although it will often do that too, even loose and corroded ones, where "using a better connector" is either prohibitive or impossible -- but that isn't the purpose I was suggesting here.

That purpose was providing reliable high current, flat surface pressure (bolt) connections between disparate metals by filling microscopic surface voids and preventing oxide formation.

But, no one is forcing you to consider it; and I don't benefit a jot either way. Just passing on a suggestion for something I've found useful and reliable since I first discovered it by reading the writings of Jerry Pournelle in the long defunct Byte magazine over 30 years ago.

(*Hubble/ISS excepted.)

User avatar
liveforphysics
100 GW
100 GW
Posts: 14455
Joined: Oct 29, 2008 1:48 am
Location: Santa Cruz, CA, USA

Re: Game Changer Page 3 with video of 1700amps!!!!

Post by liveforphysics » Dec 09, 2017 2:37 am

flippy wrote:
Dec 08, 2017 2:52 pm
i am talking about using proper milspec connectors rated for the task, not stuff to fix dodgy undersized connectors.
Milspec often just means it uses 1950s threaded cannon plugs that suck for cost or to package the space necessary to install.

The some of the worst connectors I've seen were aircraft and mil-spec rated.

I also did a pretty exhaustive grease study in bolted bus bar joints and found the best performer is also one of the cheapest and makes no claims of improvements in conductivity and has no particle fillers. ASI compound #70 grease-like paste.
Each carcinogen vapor exposure includes a dice roll for cancer.

Each mutagen vapor exposure includes a dice roll for reproductive genetic defects in your children.

Each engine start sprays them into a shared atmosphere which includes beings not offered an opportunity to consent accepting these cancer experiences and defective genetics life experiences.

Every post is a free gift to the collective of minds composing the living bleeding edge of LEV development on our spaceship.

User avatar
flippy
100 W
100 W
Posts: 196
Joined: Aug 12, 2015 3:07 pm

Re: Game Changer Page 3 with video of 1700amps!!!!

Post by flippy » Dec 09, 2017 12:57 pm

i know the old style connectors suck by todays standards. (the new stuff is quite nice actually.

but lets be honest, if you are messing around like we are with currents well into the triple digits you need to think hard about what you are doing. and everyone knows that there are people that will think that putting on some magic spray will prevent their undersized and specced connectors from melting away.

Buk___
100 W
100 W
Posts: 229
Joined: Jul 28, 2017 5:59 pm

Re: Game Changer Page 3 with video of 1700amps!!!!

Post by Buk___ » Dec 09, 2017 1:47 pm

flippy wrote:
Dec 09, 2017 12:57 pm
i know the old style connectors suck by todays standards. (the new stuff is quite nice actually.

but lets be honest, if you are messing around like we are with currents well into the triple digits you need to think hard about what you are doing. and everyone knows that there are people that will think that putting on some magic spray will prevent their undersized and specced connectors from melting away.
Not spray, not magic, not intended for under-specced connectors. The only one thinking that is you.

Post Reply