1976 resistor cart

[JohnnieB]

Originally Posted by rusticrick

..........what is the buzzer ? and what is it for ?

It is a audible warning device (beeper) to let you (and anyone near cart) know you are about to back up.

In later carts it stays on as long as F/R switch is in reverse, but from what I can gather from tracing out the lines on the schematic, this one stops beeping when pedal is pushed.

It is a safety feature, so it should be operable for liability reasons, but some guys disable them on hunting buggies.

[rusticrick]

That's what I thought , back up alarm, I think this one has never worked
My rebuild is coming along now ready for final assembly .
I'll send pictures when finished.
Rick

[rusticrick]

I hope you can tell the before from the after pictures

new brushes ,brush holder,brush leads, bearing,grease seal, turned commutator,
removed cleaned and varnished the field coils.
drained the rear axle and filled it with Lucas 75-90 full synthetic, cleaned solenoid and reversing switch.

runs good so far
thanks for your help !
Rick

[yurtle]

Originally Posted by rusticrick

I hope you can tell the before from the after pictures

new brushes ,brush holder,brush leads, bearing,grease seal, turned commutator,
removed cleaned and varnished the field coils.
drained the rear axle and filled it with Lucas 75-90 full synthetic, cleaned solenoid and reversing switch.

runs good so far
thanks for your help !
Rick

Looks good!

I don't know the first thing about resistor buggies, but shouldn't there be some sort of enclosure to protect the resistors, or is that how they usually are? Just looks kinda exposed.

[rusticrick]

there is a heavy metal cover ,which I will replace ,
but they need air space to cool , they run hot.

[JohnnieB]

Originally Posted by rusticrick

there is a heavy metal cover ,which I will replace ,
but they need air space to cool , they run hot.

That is how a resistor cart works.
When the pedal is all the way down, fully battery voltage is applied to just the motor.
When pedal is less than all the way down, one or more resistor coils are in the series circuit and some of the available energy is converted to heat by the resistor(s) instead of mechanical motion by the motor.

Resistor carts drain battery at about same rate regardless of throttle setting (speed).

[Cliffbeach491]

Its for saftey reasons. It sounds when you put the cart in reverse.

[Rodger's Rides]

Now that wasn't so hard was it? Big difference from the before and the after shots. Lots cleaner too!. Nice work.

[rusticrick]

Now that wasn't so hard was it?

The help I got from you guys on the forum
ie schematics and instructions is what made it doable.

THANKS !
Rick

[Rodger's Rides]

Originally Posted by rusticrick

Now that wasn't so hard was it?

The help I got from you guys on the forum
ie schematics and instructions is what made it doable.

THANKS !
Rick

That is what everyone is here for. To share knowledge and to gain knowledge on how to work on these "toys".