BAC Forum

General Boards => Technical Support => Topic started by: Mike Shumack on September 21, 2018, 07:25:55 PM

Title: Is Air Bag height measure to underside of lower mounting plate ('05 Patriot)?
Post by: Mike Shumack on September 21, 2018, 07:25:55 PM

I thought I was measuring my ride height correctly per the manual, but someone on another forum thinks I'm doing it wrong.

The manual is a little confusing due to the way Beaver drew the bottom measuring line. I think it is showing the underside of the airbag mount plate - someone else thinks it it is the bottom surface where the air bag attaches (top of bottom plate).

The drawing "points to" the lower mount plate (but does not specifically say "measure to here") and then the arrow and line seems to indicate a measuring point above the underside or plate.

What is the proper measuring point for the bottom?  Is the measuring gauge shown going to the underside of plates or resting on top of the plates?

Title: Re: Is Air Bag height measure to underside of lower mounting plate ('05 Patriot)?
Post by: Joel Ashley on September 21, 2018, 08:38:55 PM

Mike, it’s the distance between the proximal plate surfaces.  So for you (and a good number of us) it’s 10” from the top of the bottom plate to the bottom of the top plate, or look at it as the “inside” measurement.

Your illustration is indeed a tad ambiguous because the bottom finger of their gauge should be shown extending atop the bottom plate and doesn’t, but intends to show an “inside” distance, or the length of the rubber bag itself.

Joel

Title: Re: Is Air Bag height measure to underside of lower mounting plate ('05 Patriot)?
Post by: Mike Shumack on September 21, 2018, 09:51:27 PM

Thanks Joel. I was wrong in my interpretation of the drawing (that drawing is from the manual, as I'm sure you know).
I was measuring from the top of top plate to bottom of bottom plate (outside dimensions) which then includes the 1/4" thick plates that attach to framework, and the coach does seem to sit a little high that way. Using the inside dimensions  from plates will drop coach a 1/2".

Title: Re: Is Air Bag height measure to underside of lower mounting plate ('05 Patriot)?
Post by: Gerald Farris on September 22, 2018, 02:55:39 PM

Mike,
Using the inside dimensions where you are measuring the air bag height (the method I have always used), will actually raise the coach as apposed to using the outside of the mounting plates.

Gerald 

Title: Re: Is Air Bag height measure to underside of lower mounting plate ('05 Patriot)?
Post by: Mike Humble on September 22, 2018, 03:55:54 PM

I was told by BCS to use top to top, or bottom to bottom which would result in the same result.
Mike

Title: Re: Is Air Bag height measure to underside of lower mounting plate ('05 Patriot)?
Post by: Steve Huber Co-Admin on September 22, 2018, 05:40:54 PM

See page 251 of the 2002 Marquis Owners Manual:
http://beaveramb.org/wp-content/uploads/2018/02/2002-Marquis-Owners-Manual.pdf
Steve

Title: Re: Is Air Bag height measure to underside of lower mounting plate ('05 Patriot)?
Post by: Mike Shumack on September 22, 2018, 06:51:11 PM

Thanks. That diagram is much clearer.

 That Marquis manual is very nice. Much better than my Patriot manual.

I did not know the Marquis Tag Axle used "kingpins" and has adjustable toe (alignment).

I guess that's what you get when you buy the best.