Heat (to burn up your motor) comes from amps.
Power (to move your car) comes from watts.
Watts is the product of Amps times Volts.
Lets say that your car needs 10800 watts (10.8KW) to cruise at 55MPH.
You have a choice of;
36V times 300 Amps, which is right at the limit of youre motor's rating for amps.
or
72V times 150 Amps, which is half of the motor's rating and will allow it to run much cooler.
I agree.... go with the Alltrax 7245 or 7265 and shoot for a 72V system.
--
Stay Charged!
Hump
I-5, Blossvale NY
>
> -----Original Message-----
> From: [email protected] [mailto:[email protected]] On
> Behalf Of Phelps
> Sent: Monday, July 30, 2007 1:57 PM
> To: [email protected]
> Subject: Type to use?
>
> Well this is all new to me.. So I don't know if I will keep the voltage
> the
> Same .. I don't need a lot of power.. But on the other hand I don't want
> to
> Wait 3 min to get to 55..
> I guess as far as increasing the voltage I am a bit uneasy with it..
> Because
>
> Of the stamp on the motor reads 30 volts.. Now I know I was told that ..
> The
>
> Stamp voltage is only one voltage that will work.. But if I raise the
> Voltage and double it would not the motor burn up if I cruised the high
> way
> For 40 mins?
> Or is that what you meant by forced air blower? A blower to cool the
> motor..
>
> Also Barkley stated.that he powered the
> Field of my aircraft generator with a separate 24volts... What's this
> about
> ? Is that just for his take off power?
> Or is that something that should be done. Will I loose out if I don't..
> Or
> Just be slower on take off?
>
> Mitchell
>
> Subject: Re: What type controller..
>
> Any controller you desire. Are you planning to keep it
> To 36 volt or go higher eventually?
> I have the JH-29 starter/generator and it is rate 48
> Volt 450 amps. Evolks drove them up to 96 volts but
> Maintained the 450 amps by using a Curtis. They also
> Ran it with 72 volt using an Alltrax AXE 7245. The AXE
> Series controller are programmable and usually
> Available from local Golf cart shops Hover they used
> Forced air blowers to run up the voltage. Hope this
> Helps
Power (to move your car) comes from watts.
Watts is the product of Amps times Volts.
Lets say that your car needs 10800 watts (10.8KW) to cruise at 55MPH.
You have a choice of;
36V times 300 Amps, which is right at the limit of youre motor's rating for amps.
or
72V times 150 Amps, which is half of the motor's rating and will allow it to run much cooler.
I agree.... go with the Alltrax 7245 or 7265 and shoot for a 72V system.
--
Stay Charged!
Hump
I-5, Blossvale NY
>
> -----Original Message-----
> From: [email protected] [mailto:[email protected]] On
> Behalf Of Phelps
> Sent: Monday, July 30, 2007 1:57 PM
> To: [email protected]
> Subject: Type to use?
>
> Well this is all new to me.. So I don't know if I will keep the voltage
> the
> Same .. I don't need a lot of power.. But on the other hand I don't want
> to
> Wait 3 min to get to 55..
> I guess as far as increasing the voltage I am a bit uneasy with it..
> Because
>
> Of the stamp on the motor reads 30 volts.. Now I know I was told that ..
> The
>
> Stamp voltage is only one voltage that will work.. But if I raise the
> Voltage and double it would not the motor burn up if I cruised the high
> way
> For 40 mins?
> Or is that what you meant by forced air blower? A blower to cool the
> motor..
>
> Also Barkley stated.that he powered the
> Field of my aircraft generator with a separate 24volts... What's this
> about
> ? Is that just for his take off power?
> Or is that something that should be done. Will I loose out if I don't..
> Or
> Just be slower on take off?
>
> Mitchell
>
> Subject: Re: What type controller..
>
> Any controller you desire. Are you planning to keep it
> To 36 volt or go higher eventually?
> I have the JH-29 starter/generator and it is rate 48
> Volt 450 amps. Evolks drove them up to 96 volts but
> Maintained the 450 amps by using a Curtis. They also
> Ran it with 72 volt using an Alltrax AXE 7245. The AXE
> Series controller are programmable and usually
> Available from local Golf cart shops Hover they used
> Forced air blowers to run up the voltage. Hope this
> Helps
> --- Phelps <[email protected]> wrote:
>
>> Ok.. It is time for me to look at buying a
>> controller..
>>
>> Like I have stated before I have a Motor that takes
>> 30 volts at 300 amps,,
>>
>> However I am planing on using 36 volts and I guess
>> at times that would bring
>> the current up to 360 amps .
>>
>> It is a air craft starter engine. My car will weight
>> no more than 1500
>> pounds when done and that's with the batteries and
>> all..
>>
>> What are my choices for controllers that would do a
>> good job for this??
>>
>> I am also assuming that 36 volts will be ok when I
>> use a controller?
>>
>>
>> Thanks Mitchell
>>
>>
--
Stay Charged!
Hump
I-5, Blossvale NY