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opnspaces's avatar
opnspaces
Navigator II
Feb 15, 2020

Conduct a safety drill, have your passenger yell out SWAY!!

Emergencies are not planned events that you get to leisurely deal with. They happen unexpectedly and they happen fast. After 30 years towing I had my first and hopefully last one happen last Monday coming home from a camping trip.

I've driven this same route regularly for 39 years without incident. But it had been raining and in Southern California rain means slippery roads. I thought I was being careful by taking a corner at 40 mph that I normally take at 50. All of a sudden the trailer breaks loose and starts to slide wide toward the shoulder. I was able to do two things in the time allotted before I got it back under control. Lift my foot off the accelerator, and loudly (I was driving alone) ask "What the **** just happened?" By that time I was at 35 and the trailer was back behind me where it belonged. Total time, maybe a second or two. It was then and only then that the brake controller emergency lever came to mind. I looked down at the controller and thought "How fast would I really be able to get to it in an emergency?".

So I came up with an idea that I really think anybody who has a brake controller should do. From now on I'm going to ask my passenger to prompt me to try to get to that lever. But with safety in mind under the condition that we must already be completely stopped when they yell.

So at some point on the trip, whether at a stop light, a gas station, when stopped waiting to make a turn, setting the parking brake at camp etc, the passenger loudly yells out the word SWAY! When this happens the driver has to try to get to and apply that lever fast. Heck, thinking about it I might just give the kids carte blanche to yell sway any time they are in the truck, again with the condition that we must be at a complete stop and no more than once per trip, or hour, or day, or week...

I'm sure the first few times will be comical as dad tries to get to the lever too fast and instead punches the steering wheel or the dash and completely misses the controller. But with a bit of practice hopefully I'll calm down and take that extra half second necessary to confidently reach for and apply the lever.

Your thoughts?
  • I have ZERO muscle memory or practice recognizing a sway event to "instinctively" reach for the manual brake control to active the trailer brakes in any sort of timely fashion, none of us do unless we get into a sway event every trip to practice. I'm adding the Hayes sway master this spring, I figure it will apply the trailer brakes faster than I ever could.
  • Openspaces is correct. You don't want to hit the truck brakes at all but you do want to apply SOME trailer braking. That's why the controller has a variable, manual control - so you can modulate their operation.
    OTOH, the few times I've experienced sway the last thing I wanted to do is take one hand off the wheel.
  • True on the Prodigy applying brakes when the brake lights illuminate, mine does that too. But if you think about it, Most people need to take their foot off the accelerator to do a light pres on the brake pedal. Sure some can left foot the pedal. But when caught unaware I'm betting that muscle memory will act faster for most people. At that point people might be more prone to pressing hard on the pedal like in a panic stop. So which would be worse in a sway situation, pressing too hard on the brake pedal, or too hard on the trailer brake lever?

    As far as the lever, you bring up a good point. The lever is proportional and brakes harder the more you push it. The idea is probably not to slam the lever fully over to engage the trailer brakes. But rather to apply the lever at some point that applies the brakes, but doesn't just immediately lock up the wheels. Each situation is going to be different. But once you have your hand on the lever, or the pedal you may be able to modulate the brakes better from that point. So maybe the drill should include only applying the brake lever 1/4 to 1/2 press. The idea here being to practice not panicking and instead applying the lever in a controlled manner.
  • On my setup, the P3 gets turned on via a touch of the Suburban's brake pedal

    A 'touch' enough to turn on the brake light switch, but not enough to develop MC pressure, that would get the TV's brakes involved

    That touch tells the controller to send voltage to the trailer brakes...at the preset, which is NOT 100% voltage

    The manual lever tells the P3 to send full voltage to the trailer brakes. 100% braking is something NOT to do in your situation...nor lifting off the throttle

    Have had the same situation towing from Tahoe back to The SF Bayarea...on a curve that is in the shade, so moist. I drive slow in the mountains and even then, this happens on occasion...just touch the TV's brake pedal enough to turn on the brake light switch and the trailer will have braking at the preset, which will pull the setup straight as the throttle continues to motor on

    It is all in the setup...

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