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Unread 05-16-2012, 07:58 AM   #21
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Default Re: Is a momentary break in voltage a deal killer?

How bout a gas engine and just push the pedal the rest of the way down?
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Unread 05-16-2012, 07:59 AM   #22
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Default Re: Is a momentary break in voltage a deal killer?

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Originally Posted by essness View Post
How bout a gas engine and just push the pedal the rest of the way down?
Anybody can build a fast gas one.
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Unread 05-16-2012, 08:00 AM   #23
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Default Re: Is a momentary break in voltage a deal killer?

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Anybody can build a fast gas one.
I stand as proof of this theory
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Unread 05-16-2012, 08:03 AM   #24
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Default Re: Is a momentary break in voltage a deal killer?

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I stand as proof of this theory
See...told ya.
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Unread 05-16-2012, 10:14 AM   #25
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Default Re: Is a momentary break in voltage a deal killer?

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Originally Posted by Andy4639 View Post
One throttle 2 Alltrax controller's.

What does this do for you though??
Only thing I can figure is if the cart has 2 motor's like a 4x4.


http://www.alltraxinc.com/files/DOC1...S-wire-dia.pdf
I'm thinking you could somehow have full throttle actuate another solenoid tied to a controller. The secondary controller would draw less amp through as it's only one battery.

Wait...what about just energizing a 12v solenoid that is added into the circuit of batteries.

200A relay:
Amazon.com: PAC PAC-200 200 Amp Power Relay: Automotive Amazon.com: PAC PAC-200 200 Amp Power Relay: Automotive

I think the trick is some how avoiding dealing with the primary load and just supplementing power. Maybe a big a$$ break before make switch.

Something like the FR switch on a series cart?
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Unread 05-16-2012, 12:02 PM   #26
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Default Re: Is a momentary break in voltage a deal killer?

OK, I did call Rich at And he didn't hang up the phone immediately so I took that as a good sign. He did say that it would concieveably work but there is a chance that the transistors in the controller could be toast if it switched at just the right point in the processing. I really hate to kill a controller just for grins so I guess I'll just be happy with 43 mph....for now...
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Unread 05-16-2012, 12:27 PM   #27
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Default Re: Is a momentary break in voltage a deal killer?

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I used some 16 ga jumper wires to add the 12v battery into the pack to see what would happen. Obviously one could not run the cart this way but I figured that it would be good enough just to test and it was.
I would certainly expect those to fry instantly! I'm guessing, but this could be well over a 100amp draw.
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Unread 05-16-2012, 12:34 PM   #28
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Default Re: Is a momentary break in voltage a deal killer?

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I would certainly expect those to fry instantly! I'm guessing, but this could be well over a 100amp draw.
Don't think there would have been any draw. I had the run/tow on tow. I was just checking connectivity to see if it was feesible to add the 12v battery without breaking the series in the 48v pack and I figured if there was an issue with there being a dead short, which I thought there might be, that it would be better to find out with 16 gauge wires vs 2 gauge cables.
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Unread 05-16-2012, 05:14 PM   #29
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Default Re: Is a momentary break in voltage a deal killer?

I would use a two contact four post solenoid. the bottom contacts would be normally closed and the top normally open. split your battery pack at 18 volts and close the loop again on the solenoid at the bottom. label solenoid posts looking at the solenoid 1 2 3 4 clockwise from the top. posts 3 and 4 are normally closed. attach rear driver battery neg to post 3. attach driver front battery positive to post 4. attach a 4 gauge wire from post 3 to post 1. attach post 2 to battery positive on your 12 volt battery. attach post 3 to battery negative on the 12 volt battery. two wires each on posts 3 and 4. A word of advise though, a 48 volt pack plus a 12 volt battery equals 60 volts. at full charge this will create an overvolt. 51.6 volts plus 12.6 puts you over. running the primary pack and then activating the 12 volt might keep you under the the 60 volt limit but trial and error is the only true test.
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Unread 05-16-2012, 08:46 PM   #30
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Default Re: Is a momentary break in voltage a deal killer?

Roady has a boost circuit for a series controller here somewhere. This circuit might be modified to work on your controller. It uses a single solenoid and a big diode. The diode switches fast enough your controller should be fine. Keep in mind these types of mods can still take out a controller if something is not correct.

If you find Roady's circuit post a link here.
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