Hi guys from the Robotics forum. I have an ultra rare vintage rc motorcycle (fuji quarter 19 from 1972) which originally came with a robotic rider but the one i manage to find is missing it but i have many photos of how it look internally which i will be using to reconstruct with the help of a metal grinding machine shop in the next town from where i live. My question to many of you who very well knowledgeable in this area that can help me with the components needed to put this together. how it works and if there is something that my pictures don't show how it may supposely may be set up

right now i want to buy the small electric motor from a store that I need but I dont understand the specifications which are confusing to me.
the first one:
Motor Specifications:
Manufacture: Mabuchi
Part #: RE140RA 59402A
Voltage Range: 1.5V – 3.0V DC
No Load Speed @1.5V 8100 rpm @3.0V 14200 RPM
No Load Current @1.5V .21 A @3.0V 11320 RPM
@Max Efficiency @1.5V 0.66 A 0.66 mN*m
@3.0V 0.98A 1.04 mN*n
Stall Torque @1.5V 2.74 mN*m 2.10A
@3.0V 5.15 mN*m 3.87A
Size Max 21mm round 38mm long with shaft

and the other motor is:

Brand new motor manufactured by Mabuchi
Model: RE - 260RA - 18130
Operates on 3 VDC nominal
Recommended operating voltage range 1.5 VDC to 4.5 VDC
Motor performance at 3V:
No load speed: 6,900 RPM
No load current: 95 mA
Stall current: 1400 mA
Stall torque output: 48 g/cm
Full load current: 360 mA
Full load torque output: 9.9 g/cm
Can be operated in either direction, simply reverse power supply polarity
Dimensions (not including shaft): 27 mm long x 24 mm diameter
Shaft dimensions: 8.6 mm long x 2.0 mm diameter
Recessed terminals designed to pierce insulation of small gauge wire (wire not included)
Weight: 1 oz.
Popular motor used in motorized toys

in this two photos it shows the battery holder with the snap-on cable connection which i pressume its use with the batteries but i don't know if during the early 1970's the voltage was lower to todays and if they are fit for the motor for its energy supply. Here i found the site for the 2 battery cell snap-on holder.http://www.allelectronics.com/make-a...Holders/1.html

Originally Posted by malcabro racer

Hi guys from the Robotics forum. I have an ultra rare vintage rc motorcycle (fuji quarter 19 from 1972) which originally came with a robotic rider but the one i manage to find is missing it but i have many photos of how it look internally which i will be using to reconstruct with the help of a metal grinding machine shop in the next town from where i live. My question to many of you who very well knowledgeable in this area that can help me with the components needed to put this together. how it works and if there is something that my pictures don't show how it may supposely may be set up

What you are seeing there is basically an old servo design. You could probably replace that with a modern servo, or a hacked servo.