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How long will a 4 cfm air drill last on 100 gallon tank pressurized at 3000 psi with a regulator stepping it down at 90 psi?
Wiki User
∙ 13y ago
well, 100 gallons at 3000 psi is 3333 gallons at 90 psi, which is 443 cubic feet, or 110 minutes. However, most air tools are rated for cfm's at atmospheric pressure, which is 14.7 psi at the surface, so 2714 minutes. This is average usage, not continuous, but still quite a long time. Now, if you go down 33 feet, the pressure doubles, so you have to cut the time down - the actually calculation is hazy, as the ambient pressure doubles, but the pressure differential does not - however, you will need to increase the pressure going to the tool by 15 psi for every 30 feet of depth, or else it won't work right.
Wiki User
∙ 13y ago
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How do you make hole drilling where at the exit the drill has partial entry in to the wall thickness which makes the load nonuniform on the drill and hence drill breaks and size is not maintained?
There are a few ways of doing it depending on the exact geometry, size, and tolerance. You could drill the hole before cutting the profile that results in the partial entry. You could drill very carefully and slowly, stepping up the drill from a small size to the final size, if the smaller size would enter complete. You could make a fixture to fit over the part so the drill is guided into it. There are low melting alloys you can pour around the area to make a complete entry. You then melt the alloy away.
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You need a 3/8 drill bit to drill-out the rivets and then replace the motor that way. It might be easier to replace the whole regulator.
How do you change the right window regulator in a 1992 Lincoln Town car?
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IT IS MOUNTED BY RIVETS. YOU MUST DRILL THEM OUT
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Is it bolted or riveted . Drill out the rivets and use bolt on the new motor.
How do you make hole drilling where at the exit the drill has partial entry in to the wall thickness which makes the load nonuniform on the drill and hence drill breaks and size is not maintained?
There are a few ways of doing it depending on the exact geometry, size, and tolerance. You could drill the hole before cutting the profile that results in the partial entry. You could drill very carefully and slowly, stepping up the drill from a small size to the final size, if the smaller size would enter complete. You could make a fixture to fit over the part so the drill is guided into it. There are low melting alloys you can pour around the area to make a complete entry. You then melt the alloy away.
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How do you replace window motor 1996 Chevy Astro?
1. Remove the power window regulator2. Install a pan head sheet metal tapping screw through the sector gear and the backing plate at the hole provided to lock the sector gear into position. Then drill out the motor to regulator attaching rivets.3. Remove the motor from the regulator.To install:1. Lubricate the motor drive gear and the regulator sector teeth. Install the motor to the regulator and check the mesh of the motor to the regulator.2. Install rivets to the motor and the regulator.3. Remove the sheet metal tapping screw.4. Install the power window regulator.
