Need Schematic for V-glide F/R switch

[rockfordpi]

When I help people with their carts, instead of just fixing for them, I try to teach (those that want to know) so they can DIY in the future.

I am trying to show someone with a v glide resistor cart how/where they messed up. I need a schematic or wiring diagram for a v-glide F/R switch that shows how the low-speed reverse wire connection works.

His V-glide failed and he replaced it and his batteries at the same time. He had a middle battery turned backward and connected the green reverse wire to the negative battery terminal instead of the positive and melted his brand new v-glide.

I need the diagram/schematic to illustrate to him exactly how/where he created the dead short.

[rockfordpi]

Originally Posted by rockfordpi

When I help people with their carts, instead of just fixing for them, I try to teach (those that want to know) so they can DIY in the future.

I am trying to show someone with a v glide resistor cart how/where they messed up. I need a schematic or wiring diagram for a v-glide F/R switch that shows how the low-speed reverse wire connection works.

His V-glide failed and he replaced it and his batteries at the same time. He had a middle battery turned backward and connected the green reverse wire to the negative battery terminal instead of the positive and melted his brand new v-glide.

I need the diagram/schematic to illustrate to him exactly how/where he created the dead short.

In case anyone else is looking, there is great info on the vglide F/R switch here: https://www.golfcartstuffhodgepodge.com/chapter-9/

[fsu1tm]

You can get wiring diagrams in the Stickies.

[rockfordpi]

Originally Posted by fsu1tm

You can get wiring diagrams in the Stickies.

I did not see one in the stickies with the level of detail on the F/R switch itself that I needed.

However, the link it my prior post did have it, just not 100% sure if that was applicable to the later years of the CC resistor cart.

[PuttPutt]

is this it?

[rockfordpi]

Originally Posted by PuttPutt

is this it?

No, that is for a cart with an electronic controller and multi-step potentiometer.

I was looking for V-Glide for last year of the resistor carts, specifically, the F/R switch diagram.

I found most of what I needed was in the link I posted above, assuming it is accurate for the later models of the resistor carts.

[Sergio]

The main difference from the older to the newer (using this term loosely) models of the Resistor carts is the key switch power:

I think the diagrams below are easier to visualize the actual parts involved.


Older models with negative key switch:

Newer models with positive key switch:

This diagram shows You how to add a "High Speed By-pass" Solenoid so when You are at full throttle no current is going through the VGlide*:

* Please note that You cannot use reduced voltage for Reverse in this case.

[rockfordpi]

Originally Posted by Sergio

The main difference from the older to the newer (using this term loosely) models of the Resistor carts is the key switch power:

I think the diagrams below are easier to visualize the actual parts involved.


Older models with negative key switch:

Newer models with positive key switch:

This diagram shows You how to add a "High Speed By-pass" Solenoid so when You are at full throttle no current is going through the VGlide*:

* Please note that You cannot use reduced voltage for Reverse in this case.

I am just curious, on the high speed bypass, can you help me understand why the second activation wire on the second solenoid is connected to A1 instead of battery negative?

[Sergio]

That is because in those carts the voltage at the VGlide pads is different in Forward vs Reverse.

If You follow the Main Solenoid that powers the VGlide, You will notice in Forward the Solenoid is connected to pack positive but in Reverse the Main Solenoid is connected to S1 which has less than 1Ω resistance to the pack negative.

Since we are powering the "By-Pass" solenoid coil from the Vglide, we need to take in consideration the polarity change.

By connecting the other side of the "By-Pass" solenoid coil to Motor A1, when in Forward we get "negative" as Motor A1 connects to S1 that has less than 1Ω to pack negative.

When in Reverse, Motor A1 is connected to the reverse "Reduced Voltage" side of the FNR.

That is why You cannot have that connection going to 18v as typical since that would not be enough voltage to activate the "by-pass" Solenoid.

Also notice that there is no "fly-back" diode on the by-pass solenoid as the polarity of the coil wires will change from Forward to Reverse.

[rockfordpi]

Originally Posted by Sergio

That is because in those carts the voltage at the VGlide pads is different in Forward vs Reverse.

If You follow the Main Solenoid that powers the VGlide, You will notice in Forward the Solenoid is connected to pack positive but in Reverse the Main Solenoid is connected to S1 which has less than 1Ω resistance to the pack negative.

Since we are powering the "By-Pass" solenoid coil from the Vglide, we need to take in consideration the polarity change.

By connecting the other side of the "By-Pass" solenoid coil to Motor A1, when in Forward we get "negative" as Motor A1 connects to S1 that has less than 1Ω to pack negative.

When in Reverse, Motor A1 is connected to the reverse "Reduced Voltage" side of the FNR.

That is why You cannot have that connection going to 18v as typical since that would not be enough voltage to activate the "by-pass" Solenoid.

Also notice that there is no "fly-back" diode on the by-pass solenoid as the polarity of the coil wires will change from Forward to Reverse.

Thanks Sergio. I was overlooking the polarity reverse. Now it makes perfect sense. Thanks again.