72 volt club car

has anyone tried stepped voltage?battery?ex 12 then 24 then 36 ?to 72?
has anyone used a kelly speed controller?are they any good?
with 72 volts and a stock club car motor what will the amp draw be?

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aidanworthington's picture

yes you do need some kind of controller just stepping battery volts will kill the batterie's and be worse on amps then a controler.
plus keeping the batteries balenced is all most impossible as the first batterie in the line will be as flat as a wet fart and the last one will be half full dont do it.
A new speed controler only costs a few hundred (200 for a 200amp 72v atrax)(get a second hand one).I have tried stepping once only for testing. using 3 heavy duity relays.it did the job but like i said it kills batteries.

But i have made a good cheap speed controler myself
Basicaly get a small speed controller 12v 5amp mapplins job. change the timing caps to slow it down to the max frequency of a 1000amp scr and use the speed controler with a 10k resister to pulse the scr. the whole speed controler cost me £30 to build. i got the scr of a mate who repaires stacker truks (free).it worked fine but u need a good heatsink . does any one else know a good way of making a cheep speed controler (brushed)

LIVE LONG AND PROSPER


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