I'm disappointed by 12V air compressor shaped objects. I'd like something with a better air : noise ratio. Engine driven works well enough, but it's a complicated install in many situations. I've never needed OBA enough to make the commitment to mount up an engine driven York. Oasis looks like the perfect answer, but $1800 is a bit too steep for me.
My background in winch testing and manufacturing and selling winch parts like Albrights got me thinking about using a 12V winch motor to run a larger pump. My first thought was make an old school Warn Powerplant- Mount a compressor pump onto a Warn 8274 in a way that the sliding motor pinion would disengage from the winch gears to engage the pump crankshaft. However, mocking it up it didn't look right. Any pump that's small enough to put out much air is way too big to mount onto an 8274.
Even though a York isn't a real air compressor many people use them as such. Seems well proven enough to try it, but with a common 20 spline 12V winch motor driving it instead of a belt. Winch motors rev under low load to about 5000 RPM. Supposedly York compressors can handle that. The bigger Yorks are 9-10 cubic inches/rev
I don't know how a York compressor would load a series wound winch motor, but I'd expect lower pressure to be 4000 RPM+ with RPM dropping as the pressure increases. At low pressure with a 10 cubic inch York spinning 4000 RPM that would be 40,000 cubic inches per minute or 23.1 uncorrected CFM. Pumping isn't 100% efficient. Compressor's usually fall in the 65% to 75% efficiency range. If we call it 65% efficiency that would be 15 CFM at low pressure, like the first 20 PSI of filling a tire.
The max CFM would come down to the HP of the motor used. Most winch motors are advertised as having 4 to 6HP, but these are momentary meltdown ratings and winch real world HP is more like 2 to 2.5 HP for anything more than a few dozen seconds. In testing I've observed winches run continuously under load on dyno stands for hours at loads around 2 HP.
Searching around online I found it stated several times that one real motor HP equates to about 4 CFM airflow @ 100 PSI. That sounds believable to me. So in that case my goal for a motor driven York compressor would be 8 CFM @ 100 PSI.
I didn't find any rating for ARB compressors at 100 PSI. I found one specification sheet listing 4.68 CFM @ 29 PSI for their "big" maximum performance model.
I'm building this for myself and two friends, but if it works well I'd like to sell the winch motor mount and coupling as a DIY kit. Last week I sent out a winch motor and a new 8274 Warn coupling gear to a broach manufacturer for reverse engineering. I'm supposed to have a broach in 2-3 weeks.
I don't have anything to show until the broach shows up, but any build ideas or suggestions? Stuff that could be incorporated into the motor mount design?
My background in winch testing and manufacturing and selling winch parts like Albrights got me thinking about using a 12V winch motor to run a larger pump. My first thought was make an old school Warn Powerplant- Mount a compressor pump onto a Warn 8274 in a way that the sliding motor pinion would disengage from the winch gears to engage the pump crankshaft. However, mocking it up it didn't look right. Any pump that's small enough to put out much air is way too big to mount onto an 8274.
Even though a York isn't a real air compressor many people use them as such. Seems well proven enough to try it, but with a common 20 spline 12V winch motor driving it instead of a belt. Winch motors rev under low load to about 5000 RPM. Supposedly York compressors can handle that. The bigger Yorks are 9-10 cubic inches/rev
I don't know how a York compressor would load a series wound winch motor, but I'd expect lower pressure to be 4000 RPM+ with RPM dropping as the pressure increases. At low pressure with a 10 cubic inch York spinning 4000 RPM that would be 40,000 cubic inches per minute or 23.1 uncorrected CFM. Pumping isn't 100% efficient. Compressor's usually fall in the 65% to 75% efficiency range. If we call it 65% efficiency that would be 15 CFM at low pressure, like the first 20 PSI of filling a tire.
The max CFM would come down to the HP of the motor used. Most winch motors are advertised as having 4 to 6HP, but these are momentary meltdown ratings and winch real world HP is more like 2 to 2.5 HP for anything more than a few dozen seconds. In testing I've observed winches run continuously under load on dyno stands for hours at loads around 2 HP.
Searching around online I found it stated several times that one real motor HP equates to about 4 CFM airflow @ 100 PSI. That sounds believable to me. So in that case my goal for a motor driven York compressor would be 8 CFM @ 100 PSI.
I didn't find any rating for ARB compressors at 100 PSI. I found one specification sheet listing 4.68 CFM @ 29 PSI for their "big" maximum performance model.
I'm building this for myself and two friends, but if it works well I'd like to sell the winch motor mount and coupling as a DIY kit. Last week I sent out a winch motor and a new 8274 Warn coupling gear to a broach manufacturer for reverse engineering. I'm supposed to have a broach in 2-3 weeks.
I don't have anything to show until the broach shows up, but any build ideas or suggestions? Stuff that could be incorporated into the motor mount design?