- Joined
- Jan 21, 2011
- Messages
- 88
My Craftex mill had a lowest speed of 270 rpm. To get a slower speed I made another pulley that fits into the cone pulley.
The motor cone pulley shaft bore extends over an inch past the motor shaft so I made a shaft that would fit into the cone pulley and expand when the bolt was tightened to keep it in place. I made a small pulley that fit onto that shaft. The intermediate and spindle pulleys have four grooves the motor only has three. The motor pulley can only drive three of the four intermediate pulley grooves. By adding the fourth pulley I was able to lower the spindle speed to about 160RPM.
There is a gap in the speeds as well between 490 and 950rpm By running one belt around the motor and spindle pulleys I can get 650 rpm. filling the gap.
Terry
The motor cone pulley shaft bore extends over an inch past the motor shaft so I made a shaft that would fit into the cone pulley and expand when the bolt was tightened to keep it in place. I made a small pulley that fit onto that shaft. The intermediate and spindle pulleys have four grooves the motor only has three. The motor pulley can only drive three of the four intermediate pulley grooves. By adding the fourth pulley I was able to lower the spindle speed to about 160RPM.
There is a gap in the speeds as well between 490 and 950rpm By running one belt around the motor and spindle pulleys I can get 650 rpm. filling the gap.
Terry
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