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Patrick Roth's zx2EV project
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Nice motor! No, you shouldn't be concerned at all about the voltage label. My ADC K99-4007 says 48 volts, but the motor is designed for up to 96 volts, which is what I am going to use it at.
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1,500 Posts
SHINY!... No, no need to be concerned at all. Some people put well beyond 120v into these motors. The more volts, the more amps, the less lifetime of wear items, but 120v is no issue for that motor.
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5,007 Posts
No problem at all. Some use 144 volt systems with that (very nice
) motor. Also remember that the harder you push the car, the more voltage drop you will see. There's nothing wrong with anticipating that drop by using slightly higher system voltage and its common practice to do exactly that.
) motor. Also remember that the harder you push the car, the more voltage drop you will see. There's nothing wrong with anticipating that drop by using slightly higher system voltage and its common practice to do exactly that.
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900 Posts
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900 Posts
DC/DC converter and charger arrived today..
http://www.beepscom.com/product_p/bc-qc-op-120-fslash-10.htm
http://www.beepscom.com/product_p/cv-hwz-120-12-300.htm
$645.39 w/ shipping.. Trying to save a few hundred here from the cost of the Zivan alternatives. Will let you know how they work out.
http://www.beepscom.com/product_p/bc-qc-op-120-fslash-10.htm
http://www.beepscom.com/product_p/cv-hwz-120-12-300.htm
$645.39 w/ shipping.. Trying to save a few hundred here from the cost of the Zivan alternatives. Will let you know how they work out.
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will 25 amps be enough for the car????? are you using AC? My car bare bones with lights on heater fan on and a blinker will draw 32 + amps,,, as long as you are not there very long and the 12 battery is big enough you will be OK I am sure. My 12 VDC battery is only 10AH.
Brian
Brian
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900 Posts
I won't have AC... decided against it as it wasn't working properly in the ICE..
You know, I was concerned that 25amps wouldn't be enough, but the guy at beepscom assured me I'd be fine. Bottom line, it's cheap enough to make it worth the try! If I end up needing a bigger one, no big deal really.
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1,317 Posts
what size is your 12 volt battery for the car???
also if the conertor is not not big enough you can get a second one and add it in parallel to the existing one and double your out put
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900 Posts
hmmm... that could work if it ends up not being big enough... 50amps should be plenty.. I was thinking of just using the battery that was in the car.. not a good idea?
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1,317 Posts
that will be OK
but usually an easy way to drop several pounds of weight with a much smaller battery
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Now I am concerned My DC/DC is only 21 amps.
I had planned on using the stock battery for accessories or replace with a AGM battery of about 40AH. Perhaps I will have to replace all the lamps with LED type
I have heard so many different ways of dealing with the 12 volt, including separate charger for 12 volt and no DC/DC at all.
I guess whatever gets the job done..
My DC/DC is only 21 amps. I had planned on using the stock battery for accessories or replace with a AGM battery of about 40AH. Perhaps I will have to replace all the lamps with LED type
I have heard so many different ways of dealing with the 12 volt, including separate charger for 12 volt and no DC/DC at all.
I guess whatever gets the job done..
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1,317 Posts
Much of it depends on the size of the battery you plan to use for the 12 volt system of the car. A large enough battery can be charged seperatly and if you do not do to much night driving it will probably be OK, The advantage of a dc convertor is you will never run out of power and the draw on the traction pack is not very high, for example 21 amps at 12 vdc out put is 252 watts out put not that the dc convertor is 100% efficient but lets say it is for this example if your traction pack is 120 volts you will be using just over 2 amps of current from the pack to supply the power to your 12 volt system,,,, pretty insignificant all things considered.Now I am concerned
I had planned on using the stock battery for accessories or replace with a AGM battery of about 40AH. Perhaps I will have to replace all the lamps with LED type
I have heard so many different ways of dealing with the 12 volt, including separate charger for 12 volt and no DC/DC at all.
I guess whatever gets the job done..
Brian
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262 Posts
My DC/DC is 55 amp and I used the same battery as Brian. I havent really tested it yet but Brians comments on his thread have me worried as right now I have my DC/DC on the batt side of my contactors. Now that I have that SLA I want to move it to the controller side so its only on when the system is on to stop battery drain.
Just some thoughts as I'm working on that system now......
Ben
Just some thoughts as I'm working on that system now......
Ben
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1,317 Posts
I have heard that some do the dc convertor on the traction pack and don't even use a 12 volt battery,,, Iguess it will not draw hardly any current at idle? I am not going to do it but????? It would be interesting to see if ya did,, although if you have a seperate battery that it is responsible to charge the voltage would be to high(probably) as in "float" mode I do not think you would want more than 13.7 max,, and if the dc conv was set that low it may not fully charge the 12 volt battery,, hence the reason it should be on the contactor side or don't use the 12 v battery at all.
Just my thoughts,,, also Ben that battery didn't hold up so well for me ,, did ya notice how light it was???
Brian
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262 Posts
I sure did and the fact that my car has a little more voltage requirement than yours worries me. I may have to go back to the original, although smaller 12V car battery. It's mounted in the rear of the car so luckily room won't be an issue.
Ben
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1,317 Posts
not sure thats necessary I just think tha batteies we got were a bit how do I say" cheasy" I don't doubt that a 60 dollar version would have worked just fine,, Sorry man!!!
Brian
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900 Posts
the original battery from my car is actually pretty small for a car battery... haven't weighed it yet, but at least it's not too big
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74 Posts
Silly question... How are you weighing the parts you're removing?
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