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Old 09-17-2014, 04:45 PM   #1
IMGAR2000
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Default Use roll away feature

I would like to use the roll away feature that automatically keeps the cart from rolling away unattended to travel down the steep hills at the campground. I have been able to modify me cart enough to make it up the steep mile or two hills. I would like to use the automatic braking to travel back downhill. is this recommended? I would like to put a momentary switch on the alarm to mute it but not disable

Thanks
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Old 09-17-2014, 04:49 PM   #2
720Deere
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Location: Jarrettsville, MD
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Default Re: Use roll away feature

Unless you intend to slide all the way down the hills, it isn't advisable. At 20+ mph with 23" tires and 4 people onboard, if I flip the switch to the neutral position, it will lock the tires up on pavement. The braking action is in now way gentle or usable.
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Old 09-17-2014, 06:05 PM   #3
HiTechRedNeck
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Default Re: Use roll away feature

Hi-- I Am ASSUMING you have an RXV electric..the following applies to RXV's Only
...if not please disregard post..

------ "Roll Away" brake is electrically operated brake mounted on motor.
This is "ALL OR NOTHING" lock up or no brake.
Set up as "Dead man brake" -power must be applied to RELEASE brake

1) Roll away feature automatically sets the "Parking/emergency" brake after
the MOTOR stops the cart.
under normal driving/braking the "Parking/emergency" brake is not used.
720deere states that switching key to neutral locks the tires up. This acton cause
extreme stress to the brake assy. In my experience ti drastically shortens the
service life of the brake and can cause them to drag and burn up or even shatter.
I DO NOT RECOMMEND turning key switch while cart is in motion OR pushing brake
pedal to the point where "parking/emergency" brake engages.

2) The motor brake action SHOULD be able to control cart on any "REASONABLE"
grade. this does not cause any problems that i know of.
The Motor actin as a brake generates power which is placed in battery pack.
In the case where too much power is generated to safely apply to batteries,
the excess power is sent to a "BURN OFF" resistor near controller.
(The metal shield that says HOT)
if this is HOT after braking, you are pushing things pretty hard.

3) The controller on RXV's check operation of buzzer and many other components.
modifications to buzzer could disable cart(failed POST) or at worst damage
controller. As an experienced electronics tec. and RXV tech.. RXV wire
harness should be considered off limits (DFW) for non ELECTRONICS techs.
Stuff that works great on ANY other carts WILL NOT WORK on RXV's.
Mistakes here very costly-- controller EXPENSIVE compared to other carts.

Please post if info is useful-or if i can help.
Good luck --- RXV's are GREAT carts
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Old 09-17-2014, 06:23 PM   #4
720Deere
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Default Re: Use roll away feature

Sorry, I wasn't thinking RXV. Thanks for the clarification, HiTechRedNeck!
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Old 09-17-2014, 09:41 PM   #5
cgtech
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Default Re: Use roll away feature

Quote:
Originally Posted by HiTechRedNeck View Post
Hi-- I Am ASSUMING you have an RXV electric..the following applies to RXV's Only
...if not please disregard post..

------ "Roll Away" brake is electrically operated brake mounted on motor.
This is "ALL OR NOTHING" lock up or no brake.
Set up as "Dead man brake" -power must be applied to RELEASE brake

1) Roll away feature automatically sets the "Parking/emergency" brake after
the MOTOR stops the cart.
under normal driving/braking the "Parking/emergency" brake is not used.
720deere states that switching key to neutral locks the tires up. This acton cause
extreme stress to the brake assy. In my experience ti drastically shortens the
service life of the brake and can cause them to drag and burn up or even shatter.
I DO NOT RECOMMEND turning key switch while cart is in motion OR pushing brake
pedal to the point where "parking/emergency" brake engages.

2) The motor brake action SHOULD be able to control cart on any "REASONABLE"
grade. this does not cause any problems that i know of.
The Motor actin as a brake generates power which is placed in battery pack.
In the case where too much power is generated to safely apply to batteries,
the excess power is sent to a "BURN OFF" resistor near controller.
(The metal shield that says HOT)
if this is HOT after braking, you are pushing things pretty hard.

3) The controller on RXV's check operation of buzzer and many other components.
modifications to buzzer could disable cart(failed POST) or at worst damage
controller. As an experienced electronics tec. and RXV tech.. RXV wire
harness should be considered off limits (DFW) for non ELECTRONICS techs.
Stuff that works great on ANY other carts WILL NOT WORK on RXV's.
Mistakes here very costly-- controller EXPENSIVE compared to other carts.

Please post if info is useful-or if i can help.
Good luck --- RXV's are GREAT carts
In my experience, a proper working rxv brake will hold even on "unreasonable" grades (the tires are having a hard time holding on to the earth). The "ridiculously steep hill" test is a method i use to test working-but-questionable rxv motor brake (does this generate a "brake slipping" code?). As a side note, i think 2012.5 and newer "curtis controller" models will run with the buzzer disabled, but not the prior "danaher controller" model. I generally dont disable them, just put "fuzzy velcro" over the buzzer hole to make it quieter if requested by the customer. I am quite thankful to have another experienced rxv tech on here to "back me up" on proper rxv brake operation.
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Old 09-18-2014, 07:24 AM   #6
HiTechRedNeck
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Default Re: Use roll away feature

Thank you cgtech -- Your posts are always great.
720deere-- spot on.

just to clarify-
"parking/emergency" brake will hold on "Unreasonable" slopes as cgtech states.
and hill test is good check for brake (we have a paved hill behind shop used to test brake and demo hill climb).

My understanding is that imgar2000 wanted to use "parking/emergency " brake while MOVING downhill.
I do not think it is necessary. Regenerative Motor brake action is designed to stop cart from @20 mph.
as long as downhill speed is slow from the start, it should be able to control decent. I recommend checking "Burn off resistor" after downhill run,if resistor is HOT you are generating MUCHO POWER and batteries cannot take it all."burn off resistor" should be allowed to cool before another big downhill
run. it is more of a back up-- normal operation rarely uses "Burn off"
if brake is pushed to point of engaging "Parking/emergency" brake to maintain
control, HILL IS TOO STEEP.(IMHO)

cgtech may have different opinion- but i still don't recommend messing with
RXV wire harness. Buzzer fix....Velcro is good. (We use black duck tape)
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Old 09-18-2014, 09:24 AM   #7
cgtech
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Default Re: Use roll away feature

If you dont know Exactaly what you are doing, its best to keep your wire cutters away from your RXV. You cant harm the electronics by putting tape/velcro over the buzzer.
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Old 09-18-2014, 05:21 PM   #8
IMGAR2000
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Default Re: Use roll away feature

Thanks for the responses. To clarify the cart is a 2010 PDS. Usually what we do is let our dogs out at the top of the hill and let them walk down, I am disabled and not able to walk down hill with them. Currently I have used the "motor brake" and am able to follow behind at a slow speed however the beeping alarm is annoying, Thanks for the info I will try a momentary disable of the alarm and check the resister after the decent. If this recharges the battery too it would be a plus
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Old 09-20-2014, 07:24 AM   #9
HiTechRedNeck
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Default Re: Use roll away feature

No resistor on your cart...
My post applies to RXV's only.
I thought "Roll away" feature you mentioned was the RXV "autobrake" or "parking/Emergency" brake.
Sorry to waste your time with post not relevant to your cart.
2010 Electric ezgo came in two basic flavors... PDS (standard DC Cart) and RXV(new style AC cart)
-------Sorry about confusion--- NOTHING in my post applies to your cart.
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Old 09-26-2014, 10:16 AM   #10
IMGAR2000
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Default Re: Use roll away feature

Thanks for your help. my bad for not being more specific. Also I am not sure of the right name for the feature
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