Jeff Lawrence on tue 9 jun 98
Hello Clayart!
My friend Roy refuses to finish making parts for my slow-moving slip-mixer
(deairing slow agitator) until I either:
(1) build a 4' diameter test tank, fill it full of slip, and test with a
torque wrench the torque required to move a 3" wide, 2' long paddle through
the slip (the plan actually calls for two 4' paddles but he thinks I'll
break the wrench with a 4' test paddle).
(2) come up from your assembled experience and wisdom with a torque value
for this work at a slow rpm (15-60?)
He doesn't want me to buy a motor that is too small and the break-away
torque (that first push) is the hardest-working moment for the motor. Roy is
rightly reluctant to make something that will either tear itself apart or
burn out from overexertion.
Any informed commentary on the torque necessary to get slip of 1.75-1.79
s.g. moving would be appreciated. Am I forgetting some variable here?
TIA -- I always skin knuckles when I pick up that torque wrench...
Jeff
Jeff Lawrence
jml@sundagger.com
Sun Dagger Design
Rt 3 Box 220
Espanola, NM 87532
ph 505-753-5913
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