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The one-piece Champion C-can


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#1 havlicek

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Posted 13 May 2018 - 05:43 AM

     They tell me that these cans make for good drag motors, and that makes sense to me.  They're light, strong enough (*thanks to their one-piece/"drawn" type construction) and have a design meant to optimize the field of the permanent magnets.  So I stripped the paint, soldered-in a bearing and then epoxied-in a set of husky ceramics.  A nice stout Mura end bell capped-off the setup, and I then needed to make me a proper drag arm.  I did 19/24 on a .460" stack and for the speed-freaks, upped the timing to 27-28 degrees advance CCW.  Resistance is down around .028 ohms.

     Forget Fresno, this one will dim the lights in New South Wales.  I can almost hear them down there now when the motor gets tested: "Herb, go grab a lantern, the Yanks are testing another drag motor":D


IMG_2750.JPG
 


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John Havlicek




#2 Kim Lander

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Posted 13 May 2018 - 07:20 AM

Thats just plain nice.


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#3 SlotStox#53

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Posted 13 May 2018 - 08:05 AM

You could just frame that can and use it as decoration! That can design and the color you used :heart:

Should be able to get down the strip without too much hassle :D
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#4 havlicek

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Posted 13 May 2018 - 10:33 AM

Thanks guys.  I've been slowly creeping my timing advance upwards (*even on an arm like this), as it just seems to be what people like and want.  Nothing kray-zee like 48 degrees, but still "high-timed" for me anyway.  This motor should definitely haul the beans.  :)


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John Havlicek

#5 zipper

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Posted 13 May 2018 - 11:35 AM

Group 7 class arms tend to have 18 - 24 deg timing and something like 28 in qualifying (perhaps with advanced endbells) so you are quite spot on.


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Pekka Sippola

#6 Ben Morrow

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Posted 13 May 2018 - 08:23 PM

Very Cool!  Nice, Fast looking motor John! :good: 


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#7 havlicek

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Posted 14 May 2018 - 06:14 AM

Thanks guys, and thanks for the info Pekka.  By anyone's measure, this is an extreme arm, and the motor should definitely "scoot".  ;)


John Havlicek





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