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".
The one-piece Champion C-can
#1
Posted 13 May 2018 - 05:43 AM
- slotbaker, Tex, Chris Stemman and 5 others like this
#2
Posted 13 May 2018 - 07:20 AM
Thats just plain nice.
- havlicek likes this
#3
Posted 13 May 2018 - 08:05 AM
Should be able to get down the strip without too much hassle
- havlicek likes this
#4
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.
- olescratch likes this
#5
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.
- havlicek and Jesse Gonzales like this
#6
Posted 13 May 2018 - 08:23 PM
Very Cool! Nice, Fast looking motor John!
- havlicek likes this
#7
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".