|
The speed is
right when the batteries are doing well and the voltage hasn't been drooped by
excessive current.
Yes,
re-winding will add speed, and take a ton more current to power. For
electro-magnets, the governing factor is the
FIELD.
The field is proportional to the current times the number of turns of
winding. Reduce the number of turns and
the current
has to go up by the same amount to preserve the field. The power is just
the product of the current times
the
voltage. Since would still be powering with the same voltage, and the
current would be higher, the power would be
higher.
Double blades
do up the current a bit. Whether it lets you cut faster is questionable;
you are now cutting at two heights and
mulching as
well. There isn't any free lunch.
Larry
Elie
-----Original Message-----
From: Tim Gulden [mailto:rimmer59 hbci com] Sent: Tuesday, August 26, 2003 8:44 PM To: elec-trak cosmos phy tufts edu Subject: (ET) Mower blade speed Does anyone know what the minimum blade tip speed
should be before the blade tears the grass versus cutting it clean?
I found the following links that calculate
this speed. It looks like our Elec-Trak blades max out at 155
mph.
Should a person rewire the motor for 24 volts and
run it at 36 volts to raise the rpm? Maybe run 2 blades per
motor in a +?
Any thoughts?
|