New GM Brushless Motors For Stock And Pro-Stock
GM Racing have announced two new motors for Stock and Pro-Stock Classes. These motors are new 2010 versions yet remain on the old part number for continuity. All orders will be supplied with the new version. Versions 97303 and 97305 available through channels other than Schumacher are not BRCA legal and will not be allowed for BRCA competition and hence Schumacher have taken the decision not to supply them. Details of the new motors are as follows…
GM 97290 10.5T Brushless Motor for Pro Stock Classes.
New version with improved cooling and performance with shorter and lighter can.
Now available and set to be BRCA legal. (Pending appearance on BRCA website)
Features
- Sensored design
- 12.3mm rotor
- Includes sensor leads for GM and other speed controls
- Lightweight: only approx. 165 g
- Lower cost
- Extra-thick multiple windings
- Sintered Neodymium magnets
- Sensors in accordance with IFMAR / EFRA / DMC rules
- BRCA, EFRA and DMC legal
- Fixed motor timing
- High-performance free-running ballraces
- Sensor-less running possible with GM-Brushless speed controllers
Specification
- Nominal voltage: 7.2 V
- Operating voltage range: 4.8 … 7.4 V
- Revolutions / V (kV) approx. 3250
- No. of windings: 10.5T star
- Current drain at maximum efficiency approx. at 7.2V: 32A
- Current drain at maximum power approx. at 7.2V: 85A
- Maximum power at 7.2 V: 320 W
- Maximum power at 6 V: 240
- Maximum power at 4.8 V: 160
- Permissible direction of rotation: R and L
- No. of poles: 2
- Overall length approx. 70 mm
- Case length approx. 52,5 mm
- Diameter approx. 35,8 mm
- Free shaft length approx. 15 mm
- Magnet diameter: EFRA Stock
- Shaft diameter at output: 3.175 mm
- Weight approx. 165 g
- Recommended reduction ratios with six cells: 1 : 10 model cars, TW 1:4 – 1:8 4WD, 1:7 – 1:10
- Recommended speed controller: 7164
GM97290 GM Pro Stock 10.5T – Star Wind RRP: £69.99
GM 97294 13.5T Brushless Motor for Stock Classes.
New version with improved cooling and performance with shorter and lighter can.
Now available and set to be BRCA legal. (Pending appearance on BRCA website)
Features
- Sensored design
- 12.3mm rotor.
- Includes sensor leads for GM and other speed controls.
- Lightweight: only approx. 165 g
- Lower cost
- Extra-thick multiple windings
- Sintered Neodymium magnets
- Sensors in accordance with IFMAR / EFRA / DMC rules
- BRCA, EFRA and DMC legal
- Fixed motor timing
- High-performance free-running ballraces
- Sensor-less running possible with GM-Brushless speed controllers
Specification
- Nominal voltage: 7.2 V
- Operating voltage range: 4.8 … 7.4 V
- Revolutions / V (kV) approx. 2700
- No. of windings: 13.5T star
- Current drain at maximum efficiency approx. at 7.2V: 20A
- Current drain at maximum power approx. at 7.2V: 70A
- Maximum power at 7.2 V: 255 W
- Maximum power at 6 V: 175
- Maximum power at 4.8 V: 120
- Permissible direction of rotation: R and L
- No. of poles: 2
- Overall length approx. 70 mm
- Case length approx. 52,5 mm
- Diameter approx. 35,8 mm
- Free shaft length approx. 15 mm
- Magnet diameter: EFRA Stock
- Shaft diameter at output: 3.175 mm
- Weight approx. 165 g
- Recommended reduction ratios with six cells: 1 : 10 model cars, TW 1:4 – 1:8 4WD, 1:7 – 1:10
- Recommended speed controller: 7164
GM97294 GM Pro Stock 13.5T – Star Wind RRP: £69.99
Source: Schumacher Racing
