[admiralmaggie]

I like to experiment with a Power Steering kit. The motor is 220w and I don't want to tap into the existing DC/DC converter and/or my winch battery so I'm thinking of installing a second SEVCON unit (I have an extra) and a second 12v battery. What would be the best place to tap into switched 48v? Should I forget about the second DC/DC converter and just install a trickle charger instead?

Cheers!

 

[Xfaxman]

I'm thinking of installing a second SEVCON unit (I have an extra) and a second 12v battery.

Are you sure the second battery is needed? The second Sevcon should handle the power steering motor.

What would be the best place to tap into switched 48v?

Same place and same way using a relay to power the second Sevcon.

Please keep us posted on your project.

 

[yooper265]

I like to experiment with a Power Steering kit. The motor is 220w and I don't want to tap into the existing DC/DC converter and/or my winch battery so I'm thinking of installing a second SEVCON unit (I have an extra) and a second 12v battery. What would be the best place to tap into switched 48v? Should I forget about the second DC/DC converter and just install a trickle charger instead?

Cheers!

Why use a overpriced sevcon , go with a golf cart convertor for a fraction of the cost of a sevcon .Save your spare sevcon for the machine when the original fails .
Another plus is they have a higher output rating than sevcon ..

30 Amp Golf Cart NEW Voltage Reducer (48v to 12v) For Club Car, E-Z-GO, Yamaha | eBay

<li> 48 volt to 12 volt reducer 30 AMP Golf Cart 36V/48V to 12 V DC Converter A DC-DC Converter</li> <li> (also referred to as a Voltage Reducer) is a very important component</li> <li> </li> <li>DC-DC Converter provides excellent battery protection, and converts your 24-, 36- or 48-volt...

www.ebay.com

30 Amp Golf Cart Voltage Reducer (48v to 12v) - 360 Watts Dual Power Source | eBay

Pro Chaser DC-DC36V 48V Converter Regulator Step-Down to12V 120W 10A. Pro Chaser DC-DC 48V 60V 72V Converter Regulator Step-Down to 12V420W 35A. Working Power: 360 watt. DC-DC 36V/48V Step Down to 12V Series.

www.ebay.com

I would connect the second convertor right to the 48 volt battery bus and use a 30 amp , 12 volt cube relay to turn it on with the 12 volt coil energized by the output of the oem sevcon .

 

[admiralmaggie]

@yooper265 Good idea. I will look into a cheaper converter. When you say "48v battery bus", are you referring to the battery terminals? Some were suggesting I should be connecting to the negative terminal on Motor Controller and positive terminal on the contactor. I don't think it matters, does it?

 

[yooper265]

Yes , the battery terminals , use a inline 30 amp fuse on the positive lead . Doesn't really matter where you get the 48 volt connection , the relay will be switching it on / off .

 

[admiralmaggie]

Makes sense. Thank you @yooper265

 

[admiralmaggie]

I got the Super ATV power steering installed last night. I ended up using the Sevcon unit for now. I have a cheap 48V converter on order. The install was straight forward. It makes steering really easy. This is the part number is used. (I have a 2022 Ranger EV):

https://www.superatv.com/polaris-ranger-midsize-570-2015-power-steering-kit