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Old 05-01-2005, 01:54 PM   #85
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Quote:
Originally Posted by coriolis1
Well, I think they may be necessary. PM Rick Bell (Tarheel) and ask him about his near disaster due to worn shocks. Really made me sit up and take notice. Though his trailer is much larger and has three axles, I'd think you would still be subject to the same forces that he was, even having just the one axle. If nothing else, it's good insurance.
By the way, Dave...
You ROCK!
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Old 05-01-2005, 06:17 PM   #86
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As long as this thread has taken a shocking turn, what brand/supplier shocks have you used on your trailer, Lou?
When I did mine, I tried to figure out which myth/truth does Airstream use a special shock designed to function in a near horizontal rather than vertical application? I learned that Gabriel made the shocks for AS and said "Great! NAPA store, here I come!" but they couldn't get that part number. Called Gabriel and I was told that that shock design is only made for AS and is only available through them. So, myth buster....GO for it!
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Old 05-01-2005, 06:29 PM   #87
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If you want to look into alternative shock absorbers, start the search with 'steering stabilizers'. When you cut through all the buloney, they are just shock absorbers that operate horizontally. I have a vertical set up, so I don't know what the end fittings and stroke are for a torsion axle, but maybe axleman could help out.
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Old 05-01-2005, 07:29 PM   #88
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Quote:
Originally Posted by loudruff
As long as this thread has taken a shocking turn, what brand/supplier shocks have you used on your trailer, Lou?
When I did mine, I tried to figure out which myth/truth does Airstream use a special shock designed to function in a near horizontal rather than vertical application? I learned that Gabriel made the shocks for AS and said "Great! NAPA store, here I come!" but they couldn't get that part number. Called Gabriel and I was told that that shock design is only made for AS and is only available through them. So, myth buster....GO for it!
"Shocking turn"..heehee! I love that!
If you look at my pictures in this thread you will see a nice, new, shiny blue shock absorber.
My NAPA guy was able to cross reference my Gabriel number to a 94005 part number for ther NAPA RV Shock Absorber. That is what it is even called in his catalog; RV/Travel Trailer Shock Absorber.
I actually found the number in a post on here. I double checked it with the Gabriel number and everything was cool!
I am not sure if they use a "special" shock, but to me if the replacement works I will darn sure use it.
"Myth busted"!
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Old 05-01-2005, 08:17 PM   #89
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Quote:
Originally Posted by markdoane
If you want to look into alternative shock absorbers, start the search with 'steering stabilizers'. When you cut through all the buloney, they are just shock absorbers that operate horizontally. I have a vertical set up, so I don't know what the end fittings and stroke are for a torsion axle, but maybe axleman could help out.
Axleman is learning by the day. Axis Products will sell a lot of torsion axles this year, up about 25% over last year. Lou is the only customer that I have encountered thus far that has requested shock absorbers. None of our other customers use shocks on a torsion axle. When I get back to the shop on Monday I can share the eye-to-eye measurement of the shock attacked to Lou’s unit with all of you.



We have one torsion customer that tests our axles hard on a regular basis at a “Private Manufacturing Test Track”. They tend to build stuff real rugged because a lot of what they manufacture will be sold to rental places, people tend to be harder on something rented than owned. They are one of the best at engineering a solid product. With that said, it is of my opinion that Airstream spent a lot of effort in incorporating and designing shocks into their suspension set up. It is also of my opinion that they are not a requirement but an extra measure taken to assure a smooth ride. Even if they are not on a lot of other units manufactured it seems like a step taken to make Airstream one-step above all others. It has been great to work with Lou and learn about the Airstream suspension system.

As a side note Axis has built spring axles with shock absorbers in the past but Lou’s unit, to my knowledge, is the first torsion axle.
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Old 05-01-2005, 08:34 PM   #90
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Not sure it is true or not, but I heard that Airstream put shocks on their trailers because a lot of the other high end trailers had shocks. It wasn't necessarly that they were needed, but they helped sell trailers. Again not sure that was really the case or not - but may explain why nobody else uses shocks with torson suspension.

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Old 05-01-2005, 09:25 PM   #91
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Glad that myth is busted! I was told a year and half ago that a horizontal shock required special valving.
Larry
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Old 05-01-2005, 10:06 PM   #92
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Shocks

A shock is a device used in a dynamic system used to damp oscillations.

In a vehicle it does this function in a broader sense, beside oscillations of the sprung weight in a suspension system it helps to control body roll and pitch.

The rate of damping, be it linear, exponential or a log funtion is important in tuning the suspension system of a vehicle.

Testing is necessary unless you very lucky. I don't know how much testing has been performed by various manufacturers, but I'm sure that they would not use them for years without a purpose.
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Old 05-01-2005, 11:45 PM   #93
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Quote:
Originally Posted by Janet's Husband
A shock is a device used in a dynamic system used to damp oscillations.

In a vehicle it does this function in a broader sense, beside oscillations of the sprung weight in a suspension system it helps to control body roll and pitch.

The rate of damping, be it linear, exponential or a log funtion is important in tuning the suspension system of a vehicle.

Testing is necessary unless you very lucky. I don't know how much testing has been performed by various manufacturers, but I'm sure that they would not use them for years without a purpose.
This happens to fall into my "TMI" category.
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Old 05-02-2005, 12:02 AM   #94
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Quote:
Originally Posted by loudruff
Glad that myth is busted! I was told a year and half ago that a horizontal shock required special valving.
Larry
The box for my NAPA shocks does have something about "17 valves....yadda, yadda, yadda..." I am assuming that is what they are talking about.
I am sure that Airstream is not the only manufacturer to have used a shock in a semi-horizontal position.
I figure Airstream is a well-built trailer but they are not trailer-building Gods.
Go out and buy the NAPA shock and bust the myth with everyone you meet!
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Old 05-02-2005, 01:23 PM   #95
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It'll be home soon!

Henry called me today and said they are mounting it on the trailer as we he was speaking!
Hot dog!
I am looking forward to the pictures that henry said he will send me.
We will all know for sure if we have a good source for replacement axles once I get it home. It is about 200 miles from Axis Products to my driveway. Considering the roads in Michigan at this time of year, this should be a good run for the Axis Products axle.
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Old 05-02-2005, 03:38 PM   #96
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Today's pictures!

Well, it will be done this afternoon!
Here are some pictures of the progress.
The shock used is the NAPA 94005 RV Shock Absorber. I think once I get it home I might paint the shock black!
I do know that I am gonna POR-15 that nasty frame! It makes my new axle look like it is residing in the "low rent district"!
Enjoy the progress pictures!
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Old 05-02-2005, 04:44 PM   #97
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Axle costs

Henschen axles "DO NOT" cost $800.00.

They cost $500.00, plus additional if brakes and hubs and drums are needed.

Comparing prices is great as long as the same apple is priced out.

Some owners don't mind the design hassle, others do. Some don't mind changing the Airstream design, most others do.

Keeping an Airstream, "all Airstream", including their choices of other components, seems to be the desire of most owners.

The "LONG" term results of those changes, are at this point, pure guesses, with no factual evidence.

Andy
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Old 05-02-2005, 05:05 PM   #98
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Rivet Factory Shock Eye-To-Eye

Quote:
Originally Posted by axleman
When I get back to the shop on Monday I can share the eye-to-eye measurement of the shock attacked to Lou’s unit with all of you.
The shock’s eye-to-eye measurement was at 11.5” on Lou’s unit. That seemed to be the center of travel on the shock that we removed. Thus, we located the new shock at 11.5" also.
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