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Air Compressor for rear bags

Old 05-19-2015, 01:48 PM
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Default Air Compressor for rear bags

Air bags will be here today and was cleaning up the shop in prep for the work to add them.

For the 11 F-150 it will probably tow 3-5 times a year and just 10k. Anyhow, while cleaning I found an Mark VIII shock compressor, so the debate is on if I can get it to pump up the bags or not. It will be a fun project. The pump was used to hit 200 psi on the 4 shocks, so the up to 35psi on the bags should be doable.

Yes, I could just buy a pump and call it done, but what challenge is that? Also, this compressor is free and readily available.

Has anyone on here used a Mark VIII compressor?
Old 05-20-2015, 12:22 AM
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Subscribed.

What bags did you get? I'm looking into this now as our new boat is heavier.
Old 05-22-2015, 10:48 AM
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Originally Posted by BlueFlameEB
Air bags will be here today and was cleaning up the shop in prep for the work to add them.

For the 11 F-150 it will probably tow 3-5 times a year and just 10k. Anyhow, while cleaning I found an Mark VIII shock compressor, so the debate is on if I can get it to pump up the bags or not. It will be a fun project. The pump was used to hit 200 psi on the 4 shocks, so the up to 35psi on the bags should be doable.

Yes, I could just buy a pump and call it done, but what challenge is that? Also, this compressor is free and readily available.

Has anyone on here used a Mark VIII compressor?
You may run into an issue with fittings. Most air shock compressor lines are 1/8" where are bags normally require 1/4" lines.
Old 05-22-2015, 11:19 AM
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I think the issue of having mismatched lines and fittings, shouldn't be much of an issue with a few bucks at the hardware store... going to a bigger line off a compressor initially makes me pause, but this isn't something that you need to have quick, constant, and on the fly high CMF's of air
Old 05-26-2015, 10:11 AM
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I installed AirLift 5,000 lb bags on my 1995 Dodge 1500. With 30 lb in them it rode like a 3/4 ton truck and completely stopped the rocking motion I got while towing our single axle boat trailer. They did limit the downward travel of the rear axle though. This is especially evident over a moderate dip in pavement.
I would always recommend using two separate air lines for the bags so that air cannot travel between them in a turn. The added roll stiffness is a real benefit.
Old 05-26-2015, 01:29 PM
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Originally Posted by Feathermerchant
I installed AirLift 5,000 lb bags on my 1995 Dodge 1500. With 30 lb in them it rode like a 3/4 ton truck and completely stopped the rocking motion I got while towing our single axle boat trailer. They did limit the downward travel of the rear axle though. This is especially evident over a moderate dip in pavement.
I would always recommend using two separate air lines for the bags so that air cannot travel between them in a turn. The added roll stiffness is a real benefit.
Good point. I always recommend plumbing the bags separately, saves a lot of sway while turning.
Old 05-26-2015, 11:41 PM
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Yes. On my Dodge it worked great to use the two Schrader valves as the top mounts for my license plate. Handy but unobtrusive.


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