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Unread 12-08-2014, 06:55 PM   #21
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Default Re: Alltrax controller - CC precedent - very annoying

Quote:
you hear it click, then still have some more pedal travel and then it takes off too fast?
My situation is the second case. I have to give it almost half throttle before it clicks and then some more before it starts. I gather from what you said that it wouldn't do me any good to get a new MCOR because it will have the same resistance readings. Now my reading are 6.79K and 1.081K. I guess if worse comes to worse I could dig into the MCOR and remove the resistor as outlined in the stickies.
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Unread 12-08-2014, 07:23 PM   #22
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Default Re: Alltrax controller - CC precedent - very annoying

Unfortunately that 1kΩ resistance is a carbon impregnated track in the circuit board itself.

I wonder if the Alltrax IQ interface board does anything with the "purple" wire from the MCOR.

If not, You can short the Purple and Yellow wires together and that will bring the swing as measured from Yellow to White/Black, from 7.8kΩ->1kΩ to 6.8kΩ->870Ω.

It would definitely eliminate some of the "dead band" on the beginning of the pedal travel.
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Unread 12-08-2014, 08:30 PM   #23
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Default Re: Alltrax controller - CC precedent - very annoying

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Originally Posted by Sergio View Post
Unfortunately that 1kΩ resistance is a carbon impregnated track in the circuit board itself.

I wonder if the Alltrax IQ interface board does anything with the "purple" wire from the MCOR.

If not, You can short the Purple and Yellow wires together and that will bring the swing as measured from Yellow to White/Black, from 7.8kΩ->1kΩ to 6.8kΩ->870Ω.

It would definitely eliminate some of the "dead band" on the beginning of the pedal travel.
Sergio, have you done this with good results? It sounds like a great work around.
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Unread 12-08-2014, 08:57 PM   #24
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Default Re: Alltrax controller - CC precedent - very annoying

I don't have an Alltrax controller, but from his description sounds like there is still too much resistance after the micro switch closes and before the controller throttle ramp starts.

Do You know if Alltrax threats the MCOR as a 2 wire rheostat 5kΩ-0?

Or do they already do anything with that purple wire (bottom of the MCOR)?
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Unread 12-08-2014, 09:37 PM   #25
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Default Re: Alltrax controller - CC precedent - very annoying

It seems that Alltrax would just build something to go between the wiring harness and their controller to solve the resistance issue. Better yet it seems even simpler to create a software patch since they own the firmware running in their controller.

I have a fairly new MCOR - replaced early last summer - although it is smooth - still half peddle starts. Worse yet, one cannot obtain 100% which makes their turbo mode useless.

I did have some success telling the controller(Software setting) that I was running a EZGO ITS - this was a comment made by the tech support guy at Alltrax. The problem here is that you have no control on the low end...the least bit of peddle is around 12-15% power but it screams on the top end...I run with a stock motor and at 500 amps I don't see much future running this way so I don't.

For the record, I have tried 4-5 MAP files attempting to correct the max power issue. None resolved.

The MCOR replacement did solve the lack of smooth take off, just don't expect it solve the goofy resistance issue that the Alltrax doesn't handle very well.
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Unread 12-09-2014, 07:48 AM   #26
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Default Re: Alltrax controller - CC precedent - very annoying

Before replacing my controller the stock controller was incredibly smooth, took off with full control with little pedal gap. After trying the Alltrax then swapping for the 500 amp Curtis, upgrades etc, it isn't that smooth. I haven't replaced the MCOR but I probably will next summer just to see it it actually smooths it out some. I haven't messed with any programming, really tempted but I don't want to chance a warranty claim because of that, too much money to play with that idea. That said, I'm still looking to build another cart for home, so this one I do plan on getting into the software. Also If I need to play with the MCOR or resistance I will be able to as this cart will be claimed as mine and not the wife's!
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Unread 12-09-2014, 09:52 AM   #27
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Default Re: Alltrax controller - CC precedent - very annoying

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Originally Posted by Sergio View Post
I don't have an Alltrax controller, but from his description sounds like there is still too much resistance after the micro switch closes and before the controller throttle ramp starts.

Do You know if Alltrax threats the MCOR as a 2 wire rheostat 5kΩ-0?

Or do they already do anything with that purple wire (bottom of the MCOR)?
The throttle type is designated '5k-0,3wire' in the program selections. Note the adapter below shows the 3 wire cart input and 2 wire feed to controller. Close inspection of the circuit board does not show any connection at Cart pin 3 (purple throttle wire) and the DCX connection.

Are u suggestion I solder a connection between pin 2 and 3 to join the purple and yellow wire?
Attached Images
File Type: jpg CC IQ.JPG (239.1 KB, 0 views)
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Unread 12-09-2014, 10:22 AM   #28
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Default Re: Alltrax controller - CC precedent - very annoying

Correct, that would bring the top range to 6.8kΩ with pedal up.

If there still too much "dead band" at the beginning of the pedal travel, a 20kΩ 1/4 watt resistor can be soldered between White and Purple wires to effectively bring the top range down to 5kΩ.

That would also bring the low end down a little so the swing would be 5kΩ-834Ω

If that works, You could sell a short harness with a Female to Male 3 pin Deutsch connectors that would have the resistor and jumper in place. It could be a nice add on for Alltrax controllers with MCOR.
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Unread 12-09-2014, 11:04 AM   #29
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Default Re: Alltrax controller - CC precedent - very annoying

Carbon composition type resistor good for this? I may try to find one locally and see what test results bring
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Unread 12-09-2014, 11:10 AM   #30
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Default Re: Alltrax controller - CC precedent - very annoying

That would be a nice addition, easy fix.
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