Pat,
You might try backing off the controller adjustment for the first few
stops. The manual for my Tekonsha warns about trying to adjust the thing
until you've made a dozen or so stops.
Or, you could rebuild the brakes, replacing both the shoes and the
magnets.
Get a clampon ammeter to check the current draw of your UniVolt, both
unloaded and when you have some lights on. I'd bet that you'll see a
fairly heavy current draw even with the lights off, it's the nature of a
ferro-resonant power supply to do this. A modern 3-stage battery
charger/converter such as the Inteli-Power won't operate this way, it'll
draw very little current when the battery is charged until you turn on
lights, then it'll rise proportionally.
<<Jim>>
Patrick Ewing wrote:
>
> For years I've had a certain situation with my 1961 Bambi's brakes.
> Maybe someone might have an answer.
>
> Only the first thing in the mornings, when I apply the brakes, they will
> totally lock up. After several miles & stops they will work fine for the
> rest of the day.
>
> I have an adjustable brake resistor under the hood of the Suburban which
> I've backed off. ( I use different settings for the short single axle
> Bambi than for the long 31ft with dual axles.) The trailer's brakes have
> been totally gone through. It seems as if the current is "full on" even
> if by hand the brake controller is gently applied at very low speeds.
> (The old style KH in a 1983 GMC) The situation usually happens in
> campgrounds first thing when just getting rolling. On pavement or on
> gravel. Several times when leaving a campground and there's a decent
> downhill grade I've purpously left the umbilical cord to the trailer
> unhooked until the bottom of the grade. Otherwise I'd be constantly
> locking up the trailer wheels every time the brakes were even applied
> gently. On pavement the trailer's tires will lock up and squeel. This
> can be very embarrassing first thing in the morning if the campground is
> all quiet. Not a good image for a VAC'er to have.
>
> I'd think maybe the brake controller itself but this only happens when
> just starting out for several applications. Then for the rest of the day
> all is well. In fact very well.
>
> Another question. ................... When my Sovereign is plugged into
> shore power the univolt starts humming it's tune. When 12 volt lights
> are turned on does it draw much more power? I guess the question is just
> how much power does a univolt draw even if nothing else is turned on vs
> if several 12 volt lights are on. Just curious as energy is starting to
> get expensive.
>
> When I get rich I hope to have a good solar system installed. (:
>
> Thanks,
> Pat
>
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>
--
<<http://www.oldengine.org/members/jdunmyer>>
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<<lower SE Michigan, USA>>
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