will new MCOR solve jerky takeoff?

__GREG__ · 06-06-2012, 02:42 PM

2007 precedent..

My new-to-me alltrax DCX500 is unacceptably jerky on takeoff. I've tried multiple settings, nothing seems to help...

I assume my MCOR is worn in spots, causing signal dropout that the controller interprets as on-off-on causing it to jerk and lurch.

Before I bust off another $150 on an MCOR, is there anything else to look at?

Greg

scottyb · 06-06-2012, 02:56 PM

What are the settings in your controller?
What is the output signal from your MCOR through out the peddle travel?

__GREG__ · 06-06-2012, 02:59 PM

The controller is on my desk- I'll throw it back in the cart when I get back home... I tried the settings in virtually all positions, throttle up from 8 to 12 or whatever is the highest, throttle down matching throttle up, and also in varying degrees in either direction. I will take my multimeter and look at what the value returned from the MCOR is also.

scottyb · 06-06-2012, 03:14 PM

My guess is your problem is not the MCOR but it would be good to eliminate that from the equation so we can concentrate on proper controller settings.

__GREG__ · 06-06-2012, 03:24 PM

Hmm.

I was fairly exhaustive in trying out different settings, but I will give anything suggested a shot! I am familiar with yokogawa and Omron controllers for oilfield drive motors (topdrive, mud pump etc) but this is a bit different. Not that difficult to slam the other one in there, I bet I could have it back in about 20 minutes..

That being said, this is a fairly common platform, and I can't see why there should be tons of variance in controller settings to combat this issue IE "Put your controller settings to X at first and work from there" .....I looked up the older threads about this problem, applied the settings suggested, and it was still pretty terrible.

I believe the alltrax SPM line of controllers address this issue with 'throttle curve learning' or something. I wish I knew about that before I bought this one...

Thank you scotty for your input. I am a nidiot (new idiot) at this, and I am grateful for the guidance of those with more experience than me.

scottyb · 06-06-2012, 03:35 PM

I don't know that the SPM controls are available for your cart as of yet.

You can bench or in cart program which ever you are most comfortable with.

Can you post a 'snip' of the program screen on both pages?
Something like this ....

Andy4639 · 06-06-2012, 08:01 PM

Make sure when you reset the Alltrax that it doesn't loose power while resetting. You have to keep the cart power on until it rewrites the throttle input.
Just saying.

06-06-2012, 02:42 PM	#1
__GREG__ Not Yet Wild Join Date: Jun 2011 Posts: 37	will new MCOR solve jerky takeoff? 2007 precedent.. My new-to-me alltrax DCX500 is unacceptably jerky on takeoff. I've tried multiple settings, nothing seems to help... I assume my MCOR is worn in spots, causing signal dropout that the controller interprets as on-off-on causing it to jerk and lurch. Before I bust off another $150 on an MCOR, is there anything else to look at? Greg
__GREG__ Not Yet Wild Join Date: Jun 2011 Posts: 37

06-06-2012, 02:56 PM	#2
scottyb Happy Carting Join Date: Dec 2007 Location: Southern California Posts: 73,419	Re: will new MCOR solve jerky takeoff? What are the settings in your controller? What is the output signal from your MCOR through out the peddle travel?

06-06-2012, 02:59 PM	#3
__GREG__ Not Yet Wild Join Date: Jun 2011 Posts: 37	Re: will new MCOR solve jerky takeoff? The controller is on my desk- I'll throw it back in the cart when I get back home... I tried the settings in virtually all positions, throttle up from 8 to 12 or whatever is the highest, throttle down matching throttle up, and also in varying degrees in either direction. I will take my multimeter and look at what the value returned from the MCOR is also.
__GREG__ Not Yet Wild Join Date: Jun 2011 Posts: 37

06-06-2012, 03:14 PM	#4
scottyb Happy Carting Join Date: Dec 2007 Location: Southern California Posts: 73,419	Re: will new MCOR solve jerky takeoff? My guess is your problem is not the MCOR but it would be good to eliminate that from the equation so we can concentrate on proper controller settings.

06-06-2012, 03:24 PM	#5
__GREG__ Not Yet Wild Join Date: Jun 2011 Posts: 37	Re: will new MCOR solve jerky takeoff? Hmm. I was fairly exhaustive in trying out different settings, but I will give anything suggested a shot! I am familiar with yokogawa and Omron controllers for oilfield drive motors (topdrive, mud pump etc) but this is a bit different. Not that difficult to slam the other one in there, I bet I could have it back in about 20 minutes.. That being said, this is a fairly common platform, and I can't see why there should be tons of variance in controller settings to combat this issue IE "Put your controller settings to X at first and work from there" .....I looked up the older threads about this problem, applied the settings suggested, and it was still pretty terrible. I believe the alltrax SPM line of controllers address this issue with 'throttle curve learning' or something. I wish I knew about that before I bought this one... Thank you scotty for your input. I am a nidiot (new idiot) at this, and I am grateful for the guidance of those with more experience than me.
__GREG__ Not Yet Wild Join Date: Jun 2011 Posts: 37

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06-06-2012, 08:01 PM	#7
Andy4639 48/400/Alltrax HS motor Join Date: Jan 2007 Location: Liberty SC, Garden City SC Posts: 6,190	Re: will new MCOR solve jerky takeoff? Make sure when you reset the Alltrax that it doesn't loose power while resetting. You have to keep the cart power on until it rewrites the throttle input. Just saying.

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