Using air brake air nipple to fill bike tires

When you are parked you are using your parking or spring brakes. You don't need air pressure in your tanks until you want to move. When you push in your "brake release" button on your dash you apply air to over come the springs and release the brakes. If you loose air pressure (somewhere between 20 and 40# varies from unit to unit) your dash button will pop back out and set your spring/parking brake.

Most truck stops sell a 50' air hose with a tire chuck on one end and a trailer glad-hand on the other. Trucker lifts the air supply line to the trailer and hook the hose on to it. Then they can use the trucks compressor to air up a tire or operate some air tools. As long as your connection is properly installed in the system you will not hurt anything.

I top off two bikes each winter without the engine running as my two tanks hold good pressure for about a week. The cheap coiled hose, good dual head air chuck, and quick connect fittings are all you need to keep your tires up too.

Would it be steeling air from the brakes that might be needed? Only if you fill up your bike tires while doing 55mph down the freeway... Seriously. if you are PARKED you do not need air brakes, and the small amount a bike needs will be replaced by the compressor faster than you can draw it off.

CAUTION however.. when filling bike tires.. You need to use a valve retulated fill chuck and be very careful, if you just (Valve regulated ones are the kind where you pull a trigger or press a lever to add air) as you can very quickly overfill a bicycle tire and damage the tire..

Sounds like a gun shot, And LOUD at that, when you do that.

First you hear a ripping sound.. Then if you keep adding (or a few minutes later) BANG!!! trust me, I know. (Did it).

Great idea.... now I need to locate the tank or nipple on mine.
I have air brakes and air suspension so should have some place to tie into it.

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I run the engine, use the same connection to air the tires on my MH. I bought a 50 ft coiled air hose at Harbor Freight and use the on board compressor all the time.

No problem. Many use it just that way and you're not stealing it cause it's unlikely you would be filling tires while the coach is being driven.

When you say "air nipple", which style are you looking at? In my generator compartment there is also an air "nipple" (male connector) that is used for an external source to supply air INTO the system to release the breaks and fill suspension for towing purposes. In my front side compartment there is a factory installed Air Chuck (female connector) that is used to attach a hose and fill tires, etc.

If you RV has an air brake system and air tank, I don’t see why you couldn’t tap into the stored air. If your air pressure falls below a certain level, your service brakes probably won’t disengage until the tank pressure is restored by the pump.

I installed a reel and 50' of air hose in my front compartment and use the compressed air for all sorts of things including the tires of the mh. What you use, the compressor on the engine will replace very quickly.

Ron