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Old 02-03-2004, 11:27 AM   #43
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Switching hubs

I agree with the experts regarding switching the hubs. Be sure to re-adjust the brakes to offset any difference in brake linings. It's also great that you are inspecting, repacking the bearings and replacing the seals at the same time.
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Old 02-03-2004, 11:58 AM   #44
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Impressed by the Centramatics

Also not an endorsement, but rather an impression. At about $200 a pop they seem pricey, but if they're still viable after well over a million miles as they claim they seem worth it. The demo video was most convincing. I guess I'd get them for my TV as well as my A/S, after getting the running gear balanced.

I expect I'll be one of those pulling my A/S over a million miles, so it's nice to know a set would last that long!
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Old 02-03-2004, 04:59 PM   #45
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Andy

Does Henschen have a permanent lubricated bearing set similar to Dexter's Nev-R-Lube available?
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Old 02-03-2004, 05:48 PM   #46
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Thanks Andy.
What would we do without your experiance and knowledge you bring to this forum.
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Old 02-03-2004, 05:51 PM   #47
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New axle, Old trailer

Andy,

Quote:
However, once again, the newer the trailer, the less balancing becomes critical.

Older trailers, it's a must.

We just purchased a complete axle setup for our 63' tradewind from Inland. Will a new axle on a older trailer reduce our worries about vibration? It seems to make sense that newer equipment made with tighter tolerances will be far superior than trying to balance older equipment.
Not to mention the added bonus of getting the whole assembly balanced and ready to bolt on. I rode for about 5 miles in our 68 overlander on its way to the welders. It was quiet enough to talk on the cell phone. Mild vibration, and the only thing sliding around was the sliding bathroom door with the broken latch. We never got over 25mph. I could only imagine the damage happening at 60 mph. This made us realize the importance of balance. It is a eye opening experience to ride for just a short trip around the block in your trailer.
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Old 02-03-2004, 06:28 PM   #48
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Older trailers with new axles will not have the lack of proper balance problems, as an old trailer with the original axles.

Andy
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Old 02-03-2004, 06:37 PM   #49
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Andy,
This isn't a balance question but it kind of fits in. What is the reasonable life expectancy of the axle's on an Airstream. I realize that a unit that is towed, is going to be better off to a point than the one that just sits. But I was wondering if there is an age point when you would be better off just going ahead an replacing the axles. Mine are border line and will probably be replaced in the next year or so.

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Old 02-03-2004, 06:50 PM   #50
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Aaron.

Airstream and Henschen have no records of life expectancy.

They both say that there seems to be no limit in terms of miles.

Granted 74's and prior do have the rod problem. Also not using the trailer for years, even with the new type rods, will allow them to settle. Once that happens, the axles become history.

If an Airstream or Argosy trailer will not be towed for years, most of the weight should be removed from the axles. That can be accomplished by setting the chassis on "jack stands."

No one has any record, ever, of a Henschen axle wearing out, from mileage.

Andy
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Old 02-03-2004, 06:57 PM   #51
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Thanks Andy,
I am used to products with a "design life". It is interesting to see a product built like the Henschen axles, that with proper care will probably last several lifetimes, if it is taken care of.

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Old 02-03-2004, 07:06 PM   #52
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My axles on my 72 are still good they are sitting at a neutral angle under load.

You are can have up to 5 degrees according to Henchens under load. According to the call I had with them.
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Old 02-03-2004, 07:10 PM   #53
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Five degrees up, fully loaded, is the absolute limit.

Watch for any unusual damages, just to be sure. That doesn't cost anything.

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Old 02-03-2004, 07:11 PM   #54
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Correct ANDY 5 degrees is the very worst they can go...
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Old 02-03-2004, 07:50 PM   #55
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I just purchased comple axles, hubs and drums from Dexter Axle. Your discussion prompted me to inquire with Dexter Axle as to whether or not their drums were balanced. This is their reply.

"Thank you for visting Dexter Axle website and sending me your question.

Dexter Axle does not balance the drums to compensate for any weight difference. The drums are machined to exact specifications for radial and lateral runout.

The assembly that may require balancing would be the wheel/tire once they are assembled together. Weights are added to the wheel mainly to compensate for the irregularities in the tire. The tire being the largest diameter of the system has the most significant impact on balance."

Christing Bachman
Application Engineer

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Old 02-03-2004, 10:42 PM   #56
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Dexter brake drums

This is a fairly small sample of two.
I recently purchased a complete Dexter axle with 122 backing plates and hubs.

I set the axle up on a pair of sawhorses, and assembled the bearings and hubs with a light coating of oil (no seals and no backing plates).

I marked the circumference of the hub and proceeded to spin the hubs by hand to determine the balance. Each 'test' involved spinning the hub in opposite directions 20 times and recording the point where it stopped spinning.

By plotting the results, then adding temporary weights to the light side until the hub stopped a random location, I determined that one of the new hubs was off by 40 g. (1.4 oz) and the other was off by 20 g. (0.7oz).

Considering the small radius of the hubs, compared to the radius of tires, I think these results are acceptable.
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