Love Life
06-15-2013, 09:23 PM
So there I was larger than life....
I was perusing a yard sale today and found a treasure. It was a 1.25 HP 1725 RPM GE electric motor. I paid $5.00, and was happy because it was well maintained and ran like a champ. Now that I have an electric motor to play with I plan to make a variable speed case trimmer/neck turner/who knows.
Why? Because I hate case trimming and have been disappointed with every case trimmer I have owned, including my Gracey. The issue I have is using power adapters you either have to use a super slow electric screw driver, or if you use a drill you have to lube the bejesus out of the cutter shaft to keep it from seizing up in it's cast iron housing if running high speed. I have RCBS trimmers, a lyman trimmer, a Wilson trimmer, and a Gracey. Each has their good points, but each is also lacking. So what to do? I'm going to make my own using the Forster system as the heart. Below are the details:
I plan to get a SS rod turned by a machinist to ensure it is true and made to accept Forster case trimmer tools. I will then mount the shaft in a pillow bearing that will be lapped to ensure snugness and trueness. The pillow bearing will allow the cutter shaft to be turned at high RPM without the worry of seizing up due to heat, thermal expansion, and forgetting to add more lube...
The cutter head section will be stationary. I plan to buy the case holder set up that CH4d uses for their power case trimmer. That way I move the case to the cutter head. I will mount the pillow bearing with shaft, and CH4D Case holder setup to an aluminum base, and use shims to ensure they are as perfectly aligned as humanly and measuring device possible.
Now for the motor and RPM range:
HP: 1.25 HP
RPM: 1725
The motor has a half inch shaft. Using a Drive/input pulley of 2.5 I can hit the following ranges by just swapping out the driven/output pulley and belt:
High Range:
Drive/Input: 2.5 inch OD
Driven/Output: 1.5 inch OD
RPM=2875 Use: Case trimming/chamfering/deburring
Mid Range:
Drive/Input: 2.5 inch OD
Driven/Output: 2.5 inch OD
RPM:1725 Use: Not sure. I'll figure it out
Low Range:
Drive/Input: 2.5 inch OD
Driven/Output: 4 inch OD
RPM:1078 Use: Not sure. I'll figure it out
Low Range 2:
Drive/Input: 2.5 inch OD
Driven/Output: 5 inch OD
RPM:862.5 Use: Neck turning and reaming.
So as you can see I will have a couple RPM ranges to play with, and I can even use the Forster primer pocket cleaners and hold the case by hand.
What do ya'll think. Am I on the right path here? Any input (good and bad)?
I was perusing a yard sale today and found a treasure. It was a 1.25 HP 1725 RPM GE electric motor. I paid $5.00, and was happy because it was well maintained and ran like a champ. Now that I have an electric motor to play with I plan to make a variable speed case trimmer/neck turner/who knows.
Why? Because I hate case trimming and have been disappointed with every case trimmer I have owned, including my Gracey. The issue I have is using power adapters you either have to use a super slow electric screw driver, or if you use a drill you have to lube the bejesus out of the cutter shaft to keep it from seizing up in it's cast iron housing if running high speed. I have RCBS trimmers, a lyman trimmer, a Wilson trimmer, and a Gracey. Each has their good points, but each is also lacking. So what to do? I'm going to make my own using the Forster system as the heart. Below are the details:
I plan to get a SS rod turned by a machinist to ensure it is true and made to accept Forster case trimmer tools. I will then mount the shaft in a pillow bearing that will be lapped to ensure snugness and trueness. The pillow bearing will allow the cutter shaft to be turned at high RPM without the worry of seizing up due to heat, thermal expansion, and forgetting to add more lube...
The cutter head section will be stationary. I plan to buy the case holder set up that CH4d uses for their power case trimmer. That way I move the case to the cutter head. I will mount the pillow bearing with shaft, and CH4D Case holder setup to an aluminum base, and use shims to ensure they are as perfectly aligned as humanly and measuring device possible.
Now for the motor and RPM range:
HP: 1.25 HP
RPM: 1725
The motor has a half inch shaft. Using a Drive/input pulley of 2.5 I can hit the following ranges by just swapping out the driven/output pulley and belt:
High Range:
Drive/Input: 2.5 inch OD
Driven/Output: 1.5 inch OD
RPM=2875 Use: Case trimming/chamfering/deburring
Mid Range:
Drive/Input: 2.5 inch OD
Driven/Output: 2.5 inch OD
RPM:1725 Use: Not sure. I'll figure it out
Low Range:
Drive/Input: 2.5 inch OD
Driven/Output: 4 inch OD
RPM:1078 Use: Not sure. I'll figure it out
Low Range 2:
Drive/Input: 2.5 inch OD
Driven/Output: 5 inch OD
RPM:862.5 Use: Neck turning and reaming.
So as you can see I will have a couple RPM ranges to play with, and I can even use the Forster primer pocket cleaners and hold the case by hand.
What do ya'll think. Am I on the right path here? Any input (good and bad)?