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Conductive silver paste for brushes?


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#1 Dave Buchholz

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Posted 15 January 2020 - 08:41 PM

I seem to remember years ago making use of some type of conductive paste with silver content  in it, to increase the flow of current from brush hood hardware to the motor brushes. 

 

Anyone else remember this?

 

Anyone still do it?

 

Advantages vs drawbacks?

 






#2 gotboostedvr6

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Posted 15 January 2020 - 08:44 PM

Koford had some heat paste. Don't think it conducted electricity. It had to be used with shunts. Made a mess of everything.
David Parrotta

#3 Wizard Of Iz

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Posted 15 January 2020 - 09:17 PM

I watched my old partner, Johnny Banks, use it one night in a Box 15 car ..... and it went from awesome to awful because it hung up the motor brush.


Rollin Isbell
 


#4 MSwiss

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Posted 15 January 2020 - 11:22 PM

Koford use to sell M329 conductive paste.

I don't see it in their catalog anymore.

I always used M295, which is still listed.

It is the same stuff(usually called dielectric grease or dielectric heat transfer compoundl) auto mechanics use when they mount some sort of electronic componentry to the firewall, to provide superior heat sinking.

I always used it for G7, as it was important to make the aluminum endbell as efficient of a heatsink, as possible.

It was sloppy to use, but after building hundreds of motors with it, one learned to minimize the mess and aggravation.

No point in you using it, Dave, for the type of motors, you race.

Mike Swiss
 
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#5 Dave Buchholz

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Posted 16 January 2020 - 12:22 PM

Thanks for the reply Mike. I appreciate your comment. Having fried a few motors of late, I was wondering about getting more of the available current,but keeping the heat under control.

Getting annoyed of late by the smell of burning armature epoxy, particularly when it's mine.

#6 MSwiss

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Posted 16 January 2020 - 12:58 PM

You need to go to a smaller pinion, a bigger spur, or harder tires.
  • Eddie Fleming likes this

Mike Swiss
 
Inventor of the Low CG guide flag 4/20/18
IRRA® Components Committee Chairman
Five-time USRA National Champion (two G7, one G27, two G7 Senior)
Two-time G7 World Champion (1988, 1990), eight G7 main appearances
Eight-time G7 King track single lap world record holder

17B West Ogden Ave., Westmont, IL 60559, (708) 203-8003, mikeswiss86@hotmail.com (also my PayPal address)

Note: Send all USPS packages and mail to: 5858 Chase Ave., Downers Grove, IL 60516


#7 Dave Buchholz

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Posted 16 January 2020 - 01:27 PM

Been thinking I've been putting too much of a load on them via gearing and rollout.

Been using sealed Ps2002 at 12/35 or 12/36 on a .720 tire when they fried on a 145ft Ogilvie hillclimb

#8 Mr. M

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Posted 16 January 2020 - 09:54 PM

There was some who used a Ford window heater silver repair paste to try and enhance conduction to the shunt. I could never see any difference, but it did hold the shunt wire in place nicely though.


Chris McCarty





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