davets
New Member
Hello all. I'm not really experienced enough in electronics to even ask these questions but I've read many posts on here and I don't think I could find more qualified help. If you have time and can respond I would appreciate it.
** I'm building an electric pinewood derby car. I need 2 switches that operate with light pressure like micro switches but are in the ON position until depressed. One switch will be in the nose of the car. The weight of the car on the starting ramp pushing forward against the starting pin will hold the switch in and OFF. When the gate drops the switch will pop out and turn to ON position.
** The second switch will be on the bottom of the car and when the car reached the end of the track, a raised center rib in the middle of the track will depress the switch and turn the power OFF.
** I'm looking at finding a small, dual shaft motor, maybe 1.5-3v ,that would have a shaft running out both sides that I could attach the rear drivewheels to.
** I need a battery to operate the motor. I see 4.0v, 2200 mah electronic receiver batteries for rc cars. Would this work with a 3.0v motor? Can it be used for a lower voltage motor? The block of wood that this will all be mounted in is 1 3/4" wide. I've got a couple old 7.2v rc car motors and batteries but these present 2 problems:
1) size of both motor and battery
2) If I ran straight 7.2v to the motor I think it would be way too fast.
This would also require an axle with spur gear which means more space needed.
Thanks for any time you could give me. Even if you just know of a good source for components that might work I would appreciate the direction.
** I'm building an electric pinewood derby car. I need 2 switches that operate with light pressure like micro switches but are in the ON position until depressed. One switch will be in the nose of the car. The weight of the car on the starting ramp pushing forward against the starting pin will hold the switch in and OFF. When the gate drops the switch will pop out and turn to ON position.
** The second switch will be on the bottom of the car and when the car reached the end of the track, a raised center rib in the middle of the track will depress the switch and turn the power OFF.
** I'm looking at finding a small, dual shaft motor, maybe 1.5-3v ,that would have a shaft running out both sides that I could attach the rear drivewheels to.
** I need a battery to operate the motor. I see 4.0v, 2200 mah electronic receiver batteries for rc cars. Would this work with a 3.0v motor? Can it be used for a lower voltage motor? The block of wood that this will all be mounted in is 1 3/4" wide. I've got a couple old 7.2v rc car motors and batteries but these present 2 problems:
1) size of both motor and battery
2) If I ran straight 7.2v to the motor I think it would be way too fast.
This would also require an axle with spur gear which means more space needed.
Thanks for any time you could give me. Even if you just know of a good source for components that might work I would appreciate the direction.