TrailManor Owner's Forum - View Single Post - Questions about my new-to-me 2012 2417 Sport

**rickst29** · 03-16-2021, 11:30 AM

It sounds like your (maybe default) Echo settings are causing it to over-react: adjusting braking power (Voltage) by too much at a time. If that guess is right, then:

When it "feels" that you're not slowing down fast enough for your TV brake pedal position, then it raises the trailer brake power by too much - and you feel the Sienna being dragged back into the Trailer. (With your "submarine" effect being caused by your hitch being a bit out of line, or your WDH being mis-adjusted, or both factors).

Then a moment later, it feels that you are being slowed down too FAST for your brake pedal position - and it drops the Trailer Brake voltage down by too much, the Trailer pushes into the Sienna - and the opposite bounce effect occurs (again because the hitch ball height isn't lined up LEVEL with the TM A-frame ball receiver, or because WDH is mis-adjusted).
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These 'submarine' effects are dangerous, you probably also need to change your WDH head height. The hitch ball, in the Odyssey hitch receiver and WDH head, needs to within an inch of "level" with the bottom of the hitch ball receiver on the TM A-frame ... with that A-frame, and the entire TM, perfectly level (held up by the trailer's A-frame jack). That might require either some "lift", or some "drop" of the ball mount position on the ball mount of the WHD hitch head.

Then, on a level segment of a parking lot or residential roadway parking space, measure the highest point on each of the 4 Odyssey wheel wells to the pavement, before attaching the TM. Latch in the hitch ball and drop release the TM hitch jack, and adjust the WDH so that each of those Sienna wheel wells has dropped by the same amount of distance (closer to the street surface). That's how you tune the WDH force.
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There should be an ability to vary the "sensitivity" of your Controller, and reduce the amount of voltage change which is being made by the accelerometer changes. On my older Prodigy P3, there is a dial (along the top surface) to adjust the trailer brake strength (Voltage increment "curve") versus the pedal position sensor, and the cellphone App for your Curt might have the same feature - somewhere.

03-16-2021, 11:30 AM	#5
rickst29 yes, they hunt lions. Join Date: Aug 2005 Location: Reno, NV Posts: 1,324	Curt 'Echo' sensitivity seems much too high. It sounds like your (maybe default) Echo settings are causing it to over-react: adjusting braking power (Voltage) by too much at a time. If that guess is right, then: When it "feels" that you're not slowing down fast enough for your TV brake pedal position, then it raises the trailer brake power by too much - and you feel the Sienna being dragged back into the Trailer. (With your "submarine" effect being caused by your hitch being a bit out of line, or your WDH being mis-adjusted, or both factors). Then a moment later, it feels that you are being slowed down too FAST for your brake pedal position - and it drops the Trailer Brake voltage down by too much, the Trailer pushes into the Sienna - and the opposite bounce effect occurs (again because the hitch ball height isn't lined up LEVEL with the TM A-frame ball receiver, or because WDH is mis-adjusted). - - - These 'submarine' effects are dangerous, you probably also need to change your WDH head height. The hitch ball, in the Odyssey hitch receiver and WDH head, needs to within an inch of "level" with the bottom of the hitch ball receiver on the TM A-frame ... with that A-frame, and the entire TM, perfectly level (held up by the trailer's A-frame jack). That might require either some "lift", or some "drop" of the ball mount position on the ball mount of the WHD hitch head. Then, on a level segment of a parking lot or residential roadway parking space, measure the highest point on each of the 4 Odyssey wheel wells to the pavement, before attaching the TM. Latch in the hitch ball and drop release the TM hitch jack, and adjust the WDH so that each of those Sienna wheel wells has dropped by the same amount of distance (closer to the street surface). That's how you tune the WDH force. - - - There should be an ability to vary the "sensitivity" of your Controller, and reduce the amount of voltage change which is being made by the accelerometer changes. On my older Prodigy P3, there is a dial (along the top surface) to adjust the trailer brake strength (Voltage increment "curve") versus the pedal position sensor, and the cellphone App for your Curt might have the same feature - somewhere. __________________ TM='06 2619 w/5K axle, 15" Maxxis "E" tires. Plumbing protector. 630 watts solar. 450AH LiFePO4 batteries, 3500 watt inverter. CR-1110 E-F/S fridge (compressor). TV = 2007 4runner sport, with a 36 volt "power boost".