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#1 chasbeeman

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Posted 06 March 2017 - 11:13 AM

I'm new to cobalt motors for drag racing, but have several from unused wing cars. I've never really understood how the winds affect performance.

I have 84.5, 64 and 54 winds and am looking for recommendations for what is best for a funny car, Also gearing for 1/8 mile. I'm using a slick 7 chassis for cobalts and pencil hub protrack tires.

Thanks in advance to all the knowledgeable racers out there!

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#2 chasbeeman

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Posted 06 March 2017 - 12:28 PM

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#3 garyvmachines

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Posted 06 March 2017 - 01:34 PM

NICE BODY !!!!!!

Love that color combo.............. ;-)

 

GAV


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#4 Ramcatlarry

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Posted 06 March 2017 - 02:13 PM

"OPEN" class motors such as the group-7 arm and other eurosport arms can have very different stack lengths, arm diameter and wire size and number of turns than the 'standard' formula group arms that specify those dimensions.

 

I believe the Grp-7 arms are abbreviated numbers so that "64" is a 26 turns of #24 awg wire.  "84.5" should be 28 turns of 24.5 wire and so forth.  The lower awg number is larger wire which can carry and draw more amps.  The turn #'s  - usually fewer are hotter winds as well.  Finding a wind that does what you want is relative to the driving uses and track design and power and controllers used.  One of the common eurosport winds this season has been a 25/25 - and most drivers use a choke to tune their driving instead of toning down the armature.

 

Drag racing is a whole 'nother world and most anything can work in a bracket racing world.


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#5 Lee Palmer

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Posted 06 March 2017 - 04:47 PM

"OPEN" class motors such as the group-7 arm and other eurosport arms can have very different stack lengths, arm diameter and wire size and number of turns than the 'standard' formula group arms that specify those dimensions.
 
I believe the Grp-7 arms are abbreviated numbers so that "64" is a 26 turns of #24 awg wire.  "84.5" should be 28 turns of 24.5 wire and so forth.  The lower awg number is larger wire which can carry and draw more amps.  The turn #'s  - usually fewer are hotter winds as well.  Finding a wind that does what you want is relative to the driving uses and track design and power and controllers used.  One of the common eurosport winds this season has been a 25/25 - and most drivers use a choke to tune their driving instead of toning down the armature.
 
Drag racing is a whole 'nother world and most anything can work in a bracket racing world.

He is close, but most arms, 64 is 16 turns of 24 wire. Most mfg will do 20-25 for turns exceeding 19.

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#6 chasbeeman

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Posted 06 March 2017 - 11:42 PM

Thanks that helps me understand better. So then 54 is 15 or 25 turns of 24awg? I've used a choke for driving roundy round in the past.

With minimal glue the softer winds would be less likely to spin the tires down the track.

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Charles Beeman

#7 MSwiss

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Posted 07 March 2017 - 12:31 AM

A 54 (fifty-four) is 15 turns of 24.
A 64 (sixty-four) is 16 turns of 24.

An 84.5 (eighty-four and a half) is 18 turns of 24 1/2.

As soon as you hit 20 turns, it goes from 2 digits to 4.

IOW, a 20 turn 26 is a 20-26(twenty, twenty-six).
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#8 chasbeeman

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Posted 07 March 2017 - 01:27 AM

Thanks Mike! You definitely know your stuff

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Charles Beeman

#9 macman

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Posted 07 March 2017 - 11:06 PM

All of those motors require glue... & lots of it!


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#10 Dave Mackey

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Posted 05 December 2017 - 05:01 PM

Hi all! I'm new to the site but have been drag racing for 1 1/2 years.I bracket race diecast cars on wed. And open motor cars on Saturday. I use BPS stainless ,frames in everything! I use toothbrush motors in everything but open cars. I use proslot raptor motors from vr20's - vr open motors. Fastest is .7006@85mph in 1/4.the fastest diecast i have is a 1967 be beetle with toothbrush motor running 1.05@52 mph. Thanks for the add, since I wrecked my back and cannot race mountain bike, slot car racing is my pass time.

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