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Old 08-14-2021, 10:41 PM   #21
81clubcar
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Default Re: 1981 Lithium conversion possible?

Ok folks, update time:

After reading a bunch, talking over some ideas with you guys, and chatting with Dave at Revolution Golf carts... I started making some progress getting the old 81í into the 20th century.

Dave hooked me up with just what I needed to get my system from the old resistor coils to a series so I can use LiFePO4 batts... with minimal swap outs to keep the most original parts visible and side bonus, the cost stayed down. Iím keeping my old school F/R and pedals, the only changes are under the seat.

- Alltraxx SR controller
- PB-6 throttle potentiometer
- required diode and resistors
- wiring diagrams
- (using one of my old coil solenoids instead of buying a new one)

*thanks Dave if you read this for the tech support, I know heís on here somewhere
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Old 08-14-2021, 10:57 PM   #22
81clubcar
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Default Re: 1981 Lithium conversion possible?

Iím still in the process of wiring, making sure I get them all done right the first time. I am making each one as I go so itís going slow, but no biggie.

Hopefully if someone is in The same boat as me these will come in handy as a step by step.

-I decided the easiest way to mount the PB-6 was to screw a Simpson plate straight to the old switch box mounting plate. That made the mounting surface big enough to screw the PB-6 right in the correct spot with no other mods required. I did have to drill the correct hole a little wider in the PB-6 arm so the throttle rod bolt would fit through, quick and painless.
- I cut a piece of wood plank to fit in the passenger side battery (2) spot to mount the Altraxx, I will most likely pull it back out, paint it, and then secure it back at some point.
- I am leaving one solenoid on the original solenoid plate (where the coils were all mounted) and I am going to rout the required wires over to it, I figure that would be easiest.

If anyone has any questions or if any of you experts see an error or something I am overlooking, please let me know!

I will keep updating and with pictures as I go.

Thanks everyone.
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Old 08-18-2021, 01:40 PM   #23
81clubcar
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Default Re: 1981 Lithium conversion possible?

I went ahead and ordered a 36v 72ah Eco Batt LiFePO4 because they have a couple in stock still and it is a single piece verse 2 batts wired in parallel. I havenít seen much feedback on them so hopefully itís a solid performer. Iíll update again once it comes in and how the meter/shunt/charger etc install goes...
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Old 08-18-2021, 04:53 PM   #24
Bama Brad
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Default Re: 1981 Lithium conversion possible?

Since you have everything out, I would go ahead replace those old cables with new ones....some of those look like '81 models. Has to have some corrosion in them.
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Old 08-23-2021, 04:22 PM   #25
81clubcar
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Default Re: 1981 Lithium conversion possible?

What a keen eye you have Brad... lol, I have been more or less test fitting everything in while I wait for EcoBatt to arrive... which is supposed to be tomorrow if all goes well!!! That was a really quick turnaround, I was expecting a wait, I think itís been 10 days maybe?

I will almost certainly get some new #4s for some of those long runs, the white ones have to be original 1981 vintage...

For anyone:
Is there a way to adjust the alltraxx SR if I donít have Bluetooth or anything like that? I am kind of nervous about the 100% reverse power, I donít want to leave rubber on my driveway and possibly the cart through wall...

Thanks for everyoneís help, I will keep posting as I make progress... latest pre-batt wiring, scooted the controller back, added a couple isolation breakers, wired up the solenoid...
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Old 08-23-2021, 04:27 PM   #26
81clubcar
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Default Re: 1981 Lithium conversion possible?

From what I have been reading, I will need to install a shunt for the batt monitor, is there any particular place it should/shouldnít go in that picture? I was thinking about mounting it on the old toaster coil plate next to the solenoid and breakers... that way I can just jump from the batt to a breaker - to the shunt - then on to the Alltraxx (or wherever it goes, donít have the diagram in front on me currently)

Thanks all.
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Old 08-23-2021, 06:14 PM   #27
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Default Re: 1981 Lithium conversion possible?

Quote:
Originally Posted by 81clubcar View Post
From what I have been reading, I will need to install a shunt for the batt monitor, is there any particular place it should/shouldnít go in that picture? I was thinking about mounting it on the old toaster coil plate next to the solenoid and breakers... that way I can just jump from the batt to a breaker - to the shunt - then on to the Alltraxx (or wherever it goes, donít have the diagram in front on me currently)

Thanks all.
You're going great 81! The ECO supplied shunt will mount directly onto the negative terminal of the ECO Battery. Then you'll wire directly to your breaker and out of the breaker to the B- terminal of the Alltrax.

I thought I had a photo of mine but I already had the shunt covered with the Black terminal protector that ECO sent.

Under the red terminal protector is a 200 amp fuse that was on my original battery pack. This was the easiest installation I have read about.

I'll try to take a photo tomorrow showing the shunt and fuse without the covers.
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Last edited by Tom47; 08-23-2021 at 08:17 PM.. Reason: Added photos
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Old 08-23-2021, 09:40 PM   #28
81clubcar
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Default Re: 1981 Lithium conversion possible?

Thanks Tom,

I plan on mounting my charger and converter basically the same as you have under the driver side. My clunky old F/R switch seems to take up quite a bit more space then yours... is yours over by the controller (passenger side) on that L bracket? I was going to mount a terminal bar on my coil plate as well, but there is only (1) 12v wire coming from the dash... I am guessing all the lights, horn, etc are all spliced in somewhere up front?

Out of curiosity, what are those 2 little silver toggle switches for next to your terminal bars?
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Old 08-24-2021, 07:02 AM   #29
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Default Re: 1981 Lithium conversion possible?

Quote:
Originally Posted by 81clubcar View Post
Thanks Tom,

I plan on mounting my charger and converter basically the same as you have under the driver side. My clunky old F/R switch seems to take up quite a bit more space then yours... is yours over by the controller (passenger side) on that L bracket? I was going to mount a terminal bar on my coil plate as well, but there is only (1) 12v wire coming from the dash... I am guessing all the lights, horn, etc are all spliced in somewhere up front?

Out of curiosity, what are those 2 little silver toggle switches for next to your terminal bars?
1)The L bracket holds the solenoid. I didn't want to mount it laying flat.

2)The F/R switch on yours should still work in its original location I think. It fit there when the two center batteries were in and this pack is the same size.

3) Not sure how the 12 volt on yours was done. These should have been a fuse panel and that probably was mounted up front. It's hard to see, but the flasher for the turn signals and the fuse block for the lights are mounted on the driver's side frame rail.

4) One toggle switch is for the 48volt to the voltage reducer and my 48 volt strobe light on the roof. The other one if for the voltage reducer output 12volts. I wanted to be able to shut off power to those accessories when I don't need them around the yard, etc.
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Old 08-25-2021, 04:53 PM   #30
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Default Re: 1981 Lithium conversion possible?

Quote:
Originally Posted by 81clubcar View Post
Thanks Tom,

I plan on mounting my charger and converter basically the same as you have under the driver side. My clunky old F/R switch seems to take up quite a bit more space then yours... is yours over by the controller (passenger side) on that L bracket? I was going to mount a terminal bar on my coil plate as well, but there is only (1) 12v wire coming from the dash... I am guessing all the lights, horn, etc are all spliced in somewhere up front?

Out of curiosity, what are those 2 little silver toggle switches for next to your terminal bars?
81,

Here are the photos of the Shunt hookup as I promised.
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