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Unread 01-06-2009, 06:20 AM   #21
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Default Re: Speed from 97 CC Vglide 36V

I think the 4 and 5 coils are for older carts. I would do the 6, 8 volts same size as 6 volts. In theary the more volts should draw less amps so I dont think you need larger wires.mine has been realy strong with #6 wire. Its like a oversized controller the motor only needs so many amps and when you up the voltage I think it might be useless with larger wires. I was an electricion a while back but some one will correct me if im wrong.
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Unread 01-06-2009, 08:46 AM   #22
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Default Re: Speed from 97 CC Vglide 36V

I disagree with the smaller old wires....Yes you are right the higher the voltage the less amps..... But going 48v on small wqires is the equivalent of putting a big block in your truck and then putting the old small block exhaust and breather on it? You make the call.....the big wires will make it run stronger more efficiently.
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Unread 01-06-2009, 09:02 AM   #23
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Default Re: Speed from 97 CC Vglide 36V

So heres what I am going to do...I have decided to go 48V with 6 8V batteries for ease of mounting. I will recable the entire system with 4 awg. including the motors and switches as well as battery cables. Im hoping this will give me the speed Im looking for and I think the 48V will definitely help with torque going up the pretty steep hills that come out of the underroad tunnels for the cart paths. If not, at least I will be voltage and cable ready for a nice motor upgrade if needed. I am going to do this one step at a time starting with batteries, then cables and then motor if needed.
I will post my results as each step is done with speed and overall performance gains using my GPS, starting with old batteries and old cables, new batteries and old cables, new batteries and new cables and so on......
Any recommendations on which site sponsor to use for the solenoid and cable and lug supplies I will need..wouldn't mind supporting the site that helped me out :)
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Unread 01-06-2009, 09:16 AM   #24
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Default Re: Speed from 97 CC Vglide 36V

I could be wrong but, I don't know of any sponsor who carries the welder's cable and copper lugs I prefer. A welding cable can be found on-line. at your local hardware, or a welding supply house....Same for the copper lugs for #4 by 5/16 hole.
I prefer a soldered joint smeared in heavy lube for the most part....others will have other opinions of course.
Also I would do this at the time of the new batteries not before as the layout changes at six 8s ...... Don't make the new batts work thru the old cables in my opinion
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Unread 01-06-2009, 09:40 AM   #25
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Default Re: Speed from 97 CC Vglide 36V

Ok guys here is the deal with the cables, The bigger the cable "diameter" the better.
At some point this is neglable,
Here is why,
1. Voltage traveling through a wire causes heat due to the resistance of the wire
Voltage/Resistance = amps, so U do not want to use your amps up by heating
the wire (Unless U are desiging a heater HA !).
2. The larger the cable the less resistance= less heat=less amps loss.
3. Increasing the Voltage is the same thing since Amps = Voltage over Resistance so,
A. lets say U send 36 Volts to the motor windings are 12 Ohms(resistance)
36/12=3 amps
B. lets say U send 48 Volts to the motor windings are 12 Ohms(resistance)
48/12=4 amps
or a increase of 33%
So the Idea is to get the Volts to the motor and not loose them in heat in the cables.

That being said , now the more Volts will cause more heat at the motor since the wire size in the motor windings did not chenge.
Too much Voltage=Too Many Amps=Too Much Heat= SMOKE

Have fun and good luck !
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Unread 01-06-2009, 03:59 PM   #26
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Default Re: Speed from 97 CC Vglide 36V

well what i know and i may be wrong but 1 HP = 746 watts. 746 divided by 36 volts = 20.7777 amps. that being said 746 divided by 48 volts = 15.5416. OK a 3.1 hp = 2312 watts divided by 36 volts = 64.2222 amps. now the same 3.1 hp is 2312 watts divide that by 48 volts = 48.166 amps. I dont really know much about DC but that is the math i come up with.oxford I will be instreaded in the gps #s with new batts and old wires and again with new batts and new wires
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Unread 01-06-2009, 08:58 PM   #27
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Default Re: Speed from 97 CC Vglide 36V

I will absolutely post all results. It will take me about a week to get all the parts together but I will definitely post all results with new and old bastteries and new and old cables..I want to know what gains are had by each upgrade also and I see no harm in running the new batteries thru the old cables, the only parts that may be ubhappy would be the old cables anyway and may get a little hot but they wont be in there for long.
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Unread 01-06-2009, 09:07 PM   #28
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Default Re: Speed from 97 CC Vglide 36V

Quote:
Originally Posted by oxfordlawn View Post
I will absolutely post all results. It will take me about a week to get all the parts together but I will definitely post all results with new and old bastteries and new and old cables..I want to know what gains are had by each upgrade also and I see no harm in running the new batteries thru the old cables, the only parts that may be ubhappy would be the old cables anyway and may get a little hot but they wont be in there for long.
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Unread 01-06-2009, 09:28 PM   #29
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Default Re: Speed from 97 CC Vglide 36V

Yep which ever way you choose to work it , it still come out that the more Volts you supply to the motor , the hotter it will get :)
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Unread 01-06-2009, 10:03 PM   #30
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Default Re: Speed from 97 CC Vglide 36V

Just got back from 14 1/2 mile trip on cart (beautful nite in mid 60s), used my lazer thermator to take the wire temp before and after the trip, and it was only 13.1 degree differance it was only slightly warm to touch. on new batterys fully charged it ran 14 plus miles and still had 7 bars left on new digital state of charge meter. theory and real world sometimes dont jive
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