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Electric EZGO Electric EZ GO Marathon, Medalist, TXT and RXV. |
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08-30-2016, 02:42 PM | #11 |
Over This Interview Is...
Join Date: Jun 2012
Location: AZ
Posts: 17,449
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Re: RXV Brake / switch problems
i think if they overlapped the "hand-off" from the motor holding the cart to the brake holding the cart, there would be less failures & customer complaints. i also think there is plenty of customer abuse to blame as well (no customer will ever admit to regularly locking the brake or turning the key off while still rolling).
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08-30-2016, 04:44 PM | #12 | |
Gone Insane
Join Date: Oct 2015
Location: TN/NC/GA Tri-state area
Posts: 3,952
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Re: RXV Brake / switch problems
Quote:
Bob |
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08-30-2016, 05:40 PM | #13 |
revolutiongolfcars.com
Join Date: Mar 2010
Location: Golf Car Capital of The World... Augusta, Georgia
Posts: 10,224
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Re: RXV Brake / switch problems
I'm not an E-Z-GO guy by any stretch of the imagination, but I must admit I've got quite a bit of business replacing these things for people. Hopefully they'll come up with a design change or something soon. I've changed 6 in the last month.
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08-30-2016, 05:59 PM | #14 | |
Stay thirsty my friends!
Join Date: Jan 2007
Location: Suburban Chicago
Posts: 24,283
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Re: RXV Brake / switch problems
Quote:
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08-30-2016, 08:05 PM | #15 |
Gone Insane
Join Date: Oct 2015
Location: TN/NC/GA Tri-state area
Posts: 3,952
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Re: RXV Brake / switch problems
It does not need to be able to stop the RXV on its own. The electric motor is the primary brake on the RXV. What I'm referring to is a softer braking transition that is controlled by brake pedal encoder position, instead of the no EM brake/full EM brake applied that it currently is when you hit that transition point of the brake switch. As you approach that transition, it could start pulsing EM braking power off in wider pulse widths until the brake switch turns the brake power all the way off. If the chosen PWM frequency is high enough, brake pulsing would be smooth and not be felt, very similar to heavy equipment electrohydraulic control systems that I had designed within the last 15 years.
I could write code to do this, but it is not my place to do so. Curtis would be very upset if I abused my capabilities to violate an OEMs right to manage their own products programming. What I do to my own vehicles is my business however. Bob |
08-31-2016, 01:13 AM | #16 |
Over This Interview Is...
Join Date: Jun 2012
Location: AZ
Posts: 17,449
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Re: RXV Brake / switch problems
the current brake designs ,both of them, could never survive PWM, and I hope they never do that (with the current brake size limits). it's not nearly a large enough brake area to survive doing that job within the current size limitations of the 3 bolts that attach it. the 3 bolts limit the max size of the friction disc. maybe add more discs, like a racing clutch? that was not a suggestion for a "super HD" of the current design, please, no one should start stacking more discs into the current brake setup, it can only hold one.
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