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Mid-Pack Racer
Posted 27 February 2017 - 12:00 AM
I'm using a Pro Slot PS-2000 16D balanced motor in a Flexi chassis on my home (Gerding) track, 76 ft length, fish tires/no glue. Gearing 9/26 makes wheelspin much more controllable then normal 9/30-9/31 and gives faster laps. My concern is that this tall a ratio will overheat the motor...
Armature temp stabilizes at about 150°F after 10+ laps. Any idea what the temp limits are on these motors?
Checkered Flag in Hand
Posted 27 February 2017 - 01:18 AM
What voltage are you running at?
If you're running around 12 volts or higher I would gear 7/27. If you're less than 12 volts 8/28 should be good.
The lower gearing will allow the motor to run cooler and make the car more drivable.
Backmarker
Posted 27 February 2017 - 06:42 PM
Race Leader
Posted 27 February 2017 - 07:30 PM
Lick your finger and touch the motor, if it sizzles, then go to a lower gear ratio.
Grand Champion Poster
Posted 27 February 2017 - 08:20 PM
150 F sounds really cool.
I don't think any motors run at room temperature.
In the late 80's, early 90's, G7 motors ran hot enough to melt the lead wires off, pretty regularly.
Mike Swiss
IRRA® Components Committee Chairman
Five-time USRA National Champion (two G7, one G27, two G7 Senior)
Two-time G7 World Champion (1988, 1990)
Eight-time G7 King track single lap world record holder
17B West Ogden AveWestmont, 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
Make checks out to Chicagoland Woodworking, Inc.
Checkered Flag in Hand
Posted 27 February 2017 - 11:43 PM
Most solder melts over 425 F degrees. Steam at 212.
Larry D. Kelley, MA
retired raceway owner... (for now)
race directing around Chicago-land
USRA 2017 member #404
USSCA member
Host 2006 ISRA/USA
Great Lakes Slot Car Club member
60+ year pin Racing rail/slot cars in America
Mid-Pack Racer
Posted 27 February 2017 - 11:53 PM
Ok, thanks guys. It looks like I'm totally safe at this ratio.
