on board air pressure booster

[Jon Wehrenberg]

I hope everybody understands a doubler.

It takes the incoming air pressure and doubles it. It does not increase the volume of air. Where it can be best appreciated is using the aux air compressor that is set to cut off at 80 or 100 PSI and doubling the pressure to 160 to 200 so tires that take 115 to use Paul's example can be filled.

FWIW my aux air compressor is set to cutout at 80 PSI. So I run my engine and use the 125 PSI the bus compressor is set to produce to fill my front tires. A doubler has 1/2 the flow rate, but twice the pressure. For those few times when I use aux air for anything other than the built in systems I will just run the bus if I need greater pressures. It is often not the pressure I need, but the volume and the bus air compressor can deliver a lot of volume of air.

[phorner]

Jon is exactly right on. There is no free lunch and the air doubler isn't magic. The trade off is volume for pressure. I use mine most effectively with the bus running and the aux tank at 125 psi. I found it to be a handy tool that hopefully makes me a little more self reliant while on the road.

Nothing is going to replace that high cfm shop compressor!

[phorner]

Paul, I thought the gauge should read 'out' Pressure , but I hooked mine up to my shop compressor for a source of air pressure and the gauge reads the same as the compressor gauge regardless of how much I increase the pressure with the knob on the doubler. I haven't tried to air up anything with the doubler but was surprised that the gauge was reading the same as the compressor gauge. Do you think I have a malfunctioning doubler?
Another thought, does the doubler gauge read 'out' pressure only with a demand for air pressure or all the time it is connected to a source?

Thanks,

Sounds to me like you have either a plumbing problem or a defective doubler. Mine reads the "doubled" outlet pressure regardless of whether there is an air demand or simply a static condition. Are you sure the air regulator is working properly?

[LarryB]

Paul, I used the shop compressor and tried various pressures, the doubler gauge just follows the compressor pressure. Tried to air up a tire and no luck, pressure dropped below tire pressure instantly.

I vote for a bad doubler, good luck on getting it repaired huh. Should have been happy with my little air compressor from Home Depot.

[LarryB]

Well, hopefully not a bunch of folks have followed this thread as I have to admit I screwed up. I had used the single threaded outlet to mount the gauge. Well that is NOT where it is designed to be mounted. No flipping wonder I was getting 'in' pressure readings.

The device Works as it should and I am Red Faced. My supporting paperwork is in some Asian language so I just shot from the hip, my excuse and I'm sticking to it!

Paul thanks for the help.

[phorner]

Glad to hear it's working out.

Now.... try not to blow anything up with all that presure

[stevet903]

If anyone is looking for a build your own version of these for low $, do a search on ebay for NVBA1110-T02N SMC Booster regulator. Can't beat the price for $55!! I bought one, and with a few fittings to match my air hose, I'm fillin' tires!!

Steve

[dale farley]

Steve,

I searched several different ways but was never able to find it on eBay? I would like to build one for $55.

[HarborBus]

Me to, come on Steve give us a link. Remember most of us a challenged in some way

[stevet903]

Try this link:

http://cgi.ebay.com/ws/eBayISAPI.dll...fvi%3D1&_rdc=1

or search for

180526633712

Let me know if you can't make it work!!