Hi all
I have a 100 litre 3hp air compressor that's single phase 230v has the one 14cfm belt driven pump on it.
I've got my hands on a Honda gx240 8hp petrol engine and another secondhand 14cfm pump
The goal is to make a frame up and along side the 100 litre tank, mount both pumps and drive them with the one 8hp engine.
So the first thing I'm trying to get my head around is the RPM of the pumps and the rpm of the engine and what gearing to use, then I'll move onto making a twin unloading setup and throttle back for the engine when the tank reaches pressure.
I assume the pumps need to turn at a certain rpm? Turn them too fast and theyll burn out?
There is a rpm on the 3hp single phase motor plate that's on the compressor at the moment, but is that atuchally any use at all or is that just telling me the nonload rpm of the motor
Should I start by setting up a cheap tachometer and measuring the rpm the pump turns at, thats on it at the moment?
I don't intend to change the pulleys on the pumps, but rather stick two pulleys on the engine output shaft.
If I measured the rpm of the pump and found that
Would it be stupid to assume the other secondhand pump turns the same rpm because it's pulley is the same?
What rpm does the engine need to run at, any? As long as it doesn't stall with the pumps running at rpm?
So I've found out the rpm of the other pump, which is apprently 965rpm
I've found this about the Honda gx240 aswel
Net Power Output* 7.9 HP (5.9 kW) @ 3,600
Net Torque 13.5 lb-ft (18.3 Nm) @ 2,500 rpm
Does any of that help? Would the engine want to run flat out to produce the horsepower or at 2.5krpm so the most torque
Bit lost with this
I have a 100 litre 3hp air compressor that's single phase 230v has the one 14cfm belt driven pump on it.
I've got my hands on a Honda gx240 8hp petrol engine and another secondhand 14cfm pump
The goal is to make a frame up and along side the 100 litre tank, mount both pumps and drive them with the one 8hp engine.
So the first thing I'm trying to get my head around is the RPM of the pumps and the rpm of the engine and what gearing to use, then I'll move onto making a twin unloading setup and throttle back for the engine when the tank reaches pressure.
I assume the pumps need to turn at a certain rpm? Turn them too fast and theyll burn out?
There is a rpm on the 3hp single phase motor plate that's on the compressor at the moment, but is that atuchally any use at all or is that just telling me the nonload rpm of the motor
Should I start by setting up a cheap tachometer and measuring the rpm the pump turns at, thats on it at the moment?
I don't intend to change the pulleys on the pumps, but rather stick two pulleys on the engine output shaft.
If I measured the rpm of the pump and found that
Would it be stupid to assume the other secondhand pump turns the same rpm because it's pulley is the same?
What rpm does the engine need to run at, any? As long as it doesn't stall with the pumps running at rpm?
So I've found out the rpm of the other pump, which is apprently 965rpm
I've found this about the Honda gx240 aswel
Net Power Output* 7.9 HP (5.9 kW) @ 3,600
Net Torque 13.5 lb-ft (18.3 Nm) @ 2,500 rpm
Does any of that help? Would the engine want to run flat out to produce the horsepower or at 2.5krpm so the most torque
Bit lost with this
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