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Old 10-07-2011, 02:22 AM   #15
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1978 31' Excella 500
Genoa , Nevada
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Perry, If you're changing drums, I'd recommend going to a disc.
Perry

(just had to do it)
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Old 10-07-2011, 03:38 AM   #16
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1981 31' Excella II
New Market , Alabama
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I have limited time to mess with this. I need to be on the road by Oct 16th. The magnet surface is good on all the drums I just need the brake surface cleaned up on one drum. One drum got down to the rivets. The magnet surface looks fine. Yes the magnet area could also be cleaned up but I have found most auto machinists are some kid who is not too bright. Many years ago I bought some new drums for an old van I was driving. They did not get the hubs pressed all the way into the drums and they turned my new brake drums to true them up with the hubs in crooked, talk about mad!!!!!!!!!!!!!!!!!!!!!

Perry
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Old 10-07-2011, 05:21 AM   #17
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1973 25' Tradewind
Augusta , Georgia
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I'm in the middle of replacing axles and have old axles that are going to scrap yard. Old parts are priced at the you haul it off level.
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Old 10-07-2011, 06:27 AM   #18
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1993 21' Sovereign
Colfax , North Carolina
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What happens if you put an oval magnet in an old assembly?

Perry
You can't, the parts are not interchangeable.

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I assume the stock brakes are 12" diameter by 2" wide or 2-1/2" wide? I also assume that the bearings are generic as well.

Perry
Stock is 12"x2".
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Old 10-07-2011, 08:29 AM   #19
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1981 31' Excella II
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All 4 magnets are good. I had the wife turn them on while I held a screw driver to them.

Perry
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Old 10-07-2011, 08:44 PM   #20
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1981 31' Excella II
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It looks like I am going to be able to salvage just about everything. I am having one drum turned and maybe some others depending on how they clean up. The bearings are all good and so are the seals. I was able to find shoes locally.

Perry
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Old 10-07-2011, 11:02 PM   #21
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It looks like I am going to be able to salvage just about everything. I am having one drum turned and maybe some others depending on how they clean up. The bearings are all good and so are the seals. I was able to find shoes locally.

Perry
Perry.

It becomes a huge gamble, to reuse grease seals. Replacements are not expensive.

Having one drum turnes, is also not a good idea.

Whatever you do to one side of the trailer, as far as brakes are concerned, you must do to the other side as well.

If not, you will have a brake pull, that cannot be adjusted out.

The turned drum, will be far more effective when braking, since it will have a rough surface. The other side of the trailers drum, will be polished and therefore have less effective braking. That results in a brake pull.

Andy
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Old 10-08-2011, 10:24 AM   #22
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1981 31' Excella II
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I plan on breaking the glaze on all of them. Done this a few times. You are right about the grip on the turned one being better.

I also wanted to see if the shop knew what they were doing. I may take the other three up there and get them cleaned up.

Perry
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Old 10-10-2011, 01:29 PM   #23
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1981 31' Excella II
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Well I took it out for the first test drive and everything seems to be working well. The brakes and tires seem to be performing well. There is no pull left to right. I made a few sudden stops at about 50MPH and everything held together well. The front axel brakes seems to be running hotter than the rear brakes. I expect this has to do with the way they are wired. I expect the front axel is getting most of the current and the rear one is getting what is left over. I guess I need to beef up the wireing.

Perry
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Old 10-10-2011, 02:30 PM   #24
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Well I took it out for the first test drive and everything seems to be working well. The brakes and tires seem to be performing well. There is no pull left to right. I made a few sudden stops at about 50MPH and everything held together well. The front axel brakes seems to be running hotter than the rear brakes. I expect this has to do with the way they are wired. I expect the front axel is getting most of the current and the rear one is getting what is left over. I guess I need to beef up the wireing.

Perry
Perry.

All the brakes are wired in parallel, therefore the voltage at each magnet should be the same.

I would suggest that you adjust the brakes correctly, and try it again.

Andy
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Old 10-10-2011, 09:27 PM   #25
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1981 31' Excella II
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I suspect the wire going to the rear set of brakes is smaller. I adjusted them all the same way. Both brakes on the front axel are running hotter than the rear. That leads me to think I have an increased resistance on the rear set of brakes. It is not a big issue at the moment. I am going put some miles on them and adjust them again. It is a big improvement over what I had. When I get time, I can measure voltages at each wheel and see if that is a factor.

Perry
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Old 10-17-2011, 04:47 PM   #26
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1981 31' Excella II
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Ok Andy I am eating some crow right now. I had trouble with one brake overheating on the way down and stopped at the first rest stop and adjusted it then jacked up that side of the trailer and spun the wheels. No more trouble after that. My gas miliage when from 8 to 9 MPG when I fixed that brake.

Perry
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Old 10-17-2011, 04:52 PM   #27
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Ok Andy I am eating some crow right now. I had trouble with one brake overheating on the way down and stopped at the first rest stop and adjusted it then jacked up that side of the trailer and spun the wheels. No more trouble after that. My gas miliage when from 8 to 9 MPG when I fixed that brake.

Perry
Ah Perry, welcome to Airstreaming and some of it's "MYSTERIOUS" happenings.

Glad you found the problem and were able to easily fix it.

Now, you have to reseed the thoughts.

What.....will the next surprise be???

Now you know why so many owners carry a spare bottle of booze, just in case.

Andy
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Old 10-23-2011, 08:07 PM   #28
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1981 31' Excella II
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Well we made it back ok. 900 miles total. There is something not right and I am assuming it is the wheel that overheated. It makes a loud squeel when using the brakes. I am going to find out which wheel is sick and pull the drum and see what is what. If I am lucky the stuck brake is glazed. If I am not I may have to rebuild that wheel. Overall the old girl held up well.

Perry
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