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Old 05-27-2007, 07:01 PM   #15
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Originally Posted by campadk
Thanks all for the excellent input...

I like to be on the safe side, so I'll schedule the brakes be checked this week.

Is this something I can have our car mechanic look at (GMC dealer) which is just down the street, or do I need to go to our Airstream dealer which is about a 45 min drive.

Also what has this done to shorten the life of my Interstate batteries.. they were down to almost nothing this morning.
Of course I have since plugged into shorepower as soon as we returned.

I don't think that most car mechanics know anything about electric brakes. Hydraulic disc and drum brakes...YES but electric brakes are a different animal. You might try a good trailer place if you don't want to go to your Airstream dealer.

Lew Farber...RVIA Certified Master Tech...ABYC Certified Master Marine Electrician
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Old 05-27-2007, 07:12 PM   #16
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Take it to the Airstream or other RV dealer, or a shop that sells and services large trailers like horse trailers. Electric drum brakes look similar to hydraulic drum brakes but work differently and could confuse a less than sharp auto mechanic. A sharp one could probably figure them out, but then might not know how to ohm them correctly or have replacement parts.

A new pair of magnets shouldn't be that expensive (or used to not be) and the total labor cost shouldn't be that much more than for R&Ring the wheels and drums and troubleshooting.

I forgot to mention it, but I'd take a look at the wheel bearing grease while in there too. (honestly, if I was that far into it, I'd repack them)

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Old 05-27-2007, 08:19 PM   #17
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Originally Posted by campadk
Also what has this done to shorten the life of my Interstate batteries.. they were down to almost nothing this morning.
I don't expect much from my Mega-Tron OEMs. They'll hit 24 months at the end of the summer. Silvertwinkie has posted that he had a couple near total discharges and his Mega-Trons don't have a lot of capacity any more. He's seriously trolling for what he'll do next. I've never done that and it seems mine aren't great at recharging to full capacity. Anything I get over 24 months is honey -- I don't leave them in the trailer over winter with parasitic loads, low temps, etc -- store them in my basement and put them on a battery minder at least every month. I'll definitely go AGM when I replace. Interstates? See Interstate Batteries-Detroit. Ride 'em as long as they seem to do the job. I've never discharged >50% on my two Group 24s while running my furnace overnight -- includes camping in the upper teens with the interior thermostat set at 62 degrees F.


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