Martin Jackson wrote:
>
> Hi Paul;
>
> "Its a 120v system with a Prestolite MTC 4001 motor. This is a rather low
> rpm per volt, high torque per amp motor, the curves for it are closer to an
> ADC 9" motor than the ADC 8" motor is more often compared too. The
> controller is a 450 amp baby DCP (600 motor amps peak, and about 400
> battery amps in practice). The motor comes out of current limit at about
> 3500rpm."
>
> I wondered about your Voltage on the buggy, but assumed you just
> didn't have the room for more. The pickup would have more room. The
> controller can take more Voltage. I would think the motor would be
> happy at 4500 rpm. Why not add batteries. 3500 rpm is not a special
> speed; efficiency might drop a few % if at all. This sounds very
> conservative to me. I expect you have a good reason like 'no space' or
> cosmetics, but 3500 rpm limit really hurts power. I'm tempted to say
> 120 V is a waste of your hardware, but I could be wrong.
> ______________________________________________________________________
Nice number on the MTC4001.
I have 2 or 3 to play with on my dyno.
at 156 it looks like they won't take much more current that 600 amps.
Since these motors are from the Silver Bullet drag Car, and That came
from Bob Boyd's Megawatt Monseter 6 motored Rail dragster.... I need
more RPM per amp.
Right away the Stockers look to have 5 deg of advance. Jumping this out
to 15 Deg will liven them up by quite a bit.
How much I intend to find out.
Right now they are Stump pullers, and with little RPM. We will change
that!!
Geez!!! out of a 600 amp current limit at 3500 RPM... NOT a good choice
for a Racer.
With 156 it looks like they go to sleep at about 4000 rpm.
Adding volts helps a little, but over about 160 arcing becomes a
problem.
I have a 1200 + amp Raptor and a """1000 amp"""" T-Rex. I can find the
limits... IF I dare.
Target goal is 1000 amps of draw at 5500 RPM. I don't know yet if I can
get this far without rewinding Field coils.
Ahhh! Fall and Winter R&D time in the shop. Or Really good Space heat.
--
Rich Rudman
Manzanita Micro
www.manzanitamicro.com
1-360-297-7383,Cell 1-360-620-6266
