Forum Discussion

TeryT's avatar
TeryT
Explorer
Apr 21, 2018

Tekonsha P3 any good with "Hensley bump"?

My revered Jordan 2020 brake controller has just gone out. Since Jordan controllers aren't around any more, I was thinking of going to another, true proportional controller such as Brakesmart or the Max, but they are now out of business too!

It looks like most people (who doesn't have a newer truck with a factory braking system) are going with the Tekonsha P3. I know the P3 is marketed as a "proportional" system, however I know it really is just using an accelerometer to guess at how much TT braking should be applied -- not like the old Jordan which used actual brake pedal feedback via an attached cable.

So is the Tekonsha P3 any good at eliminating, or at least toning down, the infamous "Hensley bump"? :@

Thanks!

(FYI - Posted this on the Tech Issues forum, but it didn't get any traction . . .)
  • FWIW the Tekonsha P3 is on sale Here for less than $120.

    I have no interest in the seller or anything but thought I'd pass it along to someone who might be interested.

    I do have the P3 with my 5th wheel and am happy with it.
  • Hi Tery,
    I used a Teckonsha P2 controller for quite a few years until I got my new truck last year. Both the P2 and P3 controllers have the "boost" feature that sends a boost to the trailer brakes before the regular settings kick in. That boost lasts for a few seconds and then tapers off to the amount of braking required by the tow vehicle. The amount of boost is set by you before using the controller. I set mine once and rarely touched it again although it is easily changed if you wish. The only time I changed it was when driving slowly through campgrounds, some city streets, etc.

    In addition, the boost starts by the application of the tow vehicles stop lights. This happens before the tow vehicles brakes even start to do any stopping. This allows the Prodigy to apply trailer braking before the truck braking starts. You can easily feel this by very lightly stepping on the brakes with enough pressure to light the brake tail lights but not enough to stop the truck. You will feel the trailer brakes come on - the amount depends on the boost setting you have set up. This is something equivalent to using the hand control to apply trailer brakes.

    I have never had any problem with the Hensley bump but have felt it once or twice while applying brakes and turning at the same time in the city. Never a single problem while driving normally or descending a mountain or hill at highway speeds. Perhaps I just got used to using a light foot on the brake pedal at first and that applied the trailer brakes before I needed to use the truck brakes. I really never thought about it while driving though.

    I wouldn't worry about it. The P3 is a great controller, works seamlessly with the Hensley hitch, and will give you long, reliable, and smooth braking for many years. :)
    Barney