Question 1

I have a motorhome - coach diesel pusher The on board compressor takes for ever ( 20 - 30 min per tire ) to go from 100 to 115 - 450 ?

Accepted Answer

You really need a compressor that's rated for a higher pressure. You're looking to operate at the maximum edge of the pressure rating. It won't blow up per say, but it's not going to be as fast as you need. Look at Max psi closer to 200 psi with 100% duty cycle.

Question 2

Is this the best brand for this kind of portable compressor? Looking for most solid/reliable unit with no budget.

Accepted Answer

This is the best.

Question 3

Would it work if i replace the 12v clamps with longer wires / cigarette lighter (male)?  so, i don't have to pop the hood open.

Accepted Answer

Willie, they're not full of crap, you've just been lucky and haven't run your compressor to a high enough PSI to draw full load amps (it will draw very few amps at 0 psi and max amps at max psi), or you've put a bigger fuse in your cigarette lighter, so you can draw amps until the wires melt under your dash and maybe catch on fire. If this compressor was safe to run on a lighter plug, it would come with the option just like the smaller viair compressors. If you're okay with the risk of a fire under your dash, and you wouldn't mind re-wiring anything that shares the routing through the dash with the lighter socket wires, then give it a try. You can extend the wire(s), but do it to the battery with about 10ga wire and a quick disconnect that insulates the battery end. Napa, or your local knowledgeable auto parts guy, can show you what you need if you give them this description. You can keep the clamp for the ground and find a nice bolt or bracket, then wire your hot near that. 10ga might be a little light on paper, but since you aren't combining it with other wires you won't overheat it. I would pick up an inline fuse (all-weather) and put it very close to the battery in case something shorts your wire, the fuse will blow instead of killing your battery or catching on fire. FYI, if you do make a cigarette plug adapter, the high resistance in the small wires under your dash will reduce the power available to your compressor so it will run slower (all that power reduction goes into heating the wire bundle in your dash; pure physics, and a bad idea).

Question 4

Can i run this off a car jump starter pack?

Accepted Answer

James,We recommend that you run our compressors with constant 13.8V, meaning a recharging car battery (vehicle on) or a converter/power supply for the compressors to operate as specs. Running our compressors with a jump starter or stand alone battery may not give the compressor the voltage that they may need. With low voltage, the compressor will be starving for power and create high amp draw or worst damage the compressor.

ASIN	B000X9EGFS
Additional Features	100% Duty Cycle
Air Flow Capacity	3 cfm
Best Sellers Rank	#148,666 in Automotive ( See Top 100 in Automotive ) #470 in Wheel & Tire Air Compressors & Inflators
Brand Name	VIAIR
Capacity	1.8 cubic feet
Color	Silver
Customer Reviews	4.7 4.7 out of 5 stars (792)
Global Trade Identification Number	00818114004544
Hose Length	25 feet
Included Components	Tool Kit
Item Type Name	Portable Air Compressor
Item Weight	13.1 pounds
Manufacturer	Viair Corporation
Manufacturer Part Number	45043
Manufacturer Warranty Description	30 Days
Material Type	Combination
Maximum Current	44 A
Maximum Horsepower	0.42 hp
Maximum Power	317 watts
Maximum Pressure	150 psi
Metal Type	Aluminum
Model Name	450P Automatic Portable Compressor Kit
Model Number	450P
Noise	69 db
Number of Items	1
Part Interchange Info	45043
Power Source	Electric
Recommended Uses For Product	Tire Inflation
Style	450P Original Portable
UPC	885892899907 818114004544
Unit Count	1 Count
Voltage	12 volts

VIAIR 450P/45043 Automatic Portable Compressor, Tire Inflator Kit, Air Compressor for Truck, Jeep, SUV, and Car Tires, Portable Air Pump Kit, Car Accessories, 100% Duty Cycle, 150 PSI/1.80 CFM, Silver

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