Electric Trailer Brake Question
I am new to RVs and recently took possession of a new Montana 3790RD fifth wheel RV. The 3790RD is rated at 13K pounds dry and the CAT scales gave me a trailer axle weight of just under 11,000 pounds....
Forum Discussion
GREAT info!!!! Love it
Still not sold on PWM for inductive actuators on a self wedging drum/shoe
setup. Why ABS doesn't work well for vehicles with drum/shoe setups.
Where to put the tone ring (gear ring) and most put it on the drive
shaft. That self wedging shoes do NOT release quickly or fast enough
for ABS cycling. They could increase the release spring tension, but
then the two curves would be going in the wrong directions...it would
still help and better than no PWM
It would be good to see the output as you have captured vs the actual
at the trailer magnet, but almost impossible to do easily
The P2/P3 are inertia based, so the only association with the TV brake
pedal is as the initiator. Factored by the boost setting.
Once it senses deceleration, it will continue to increase braking until
either the TV brake pedal switch is deactivated or deceleration drops
below some preset or stops
I readjust the trailer brakes throughout the trip, as they need to be
very tight for my style of driving
Why asked if the ITBM has both MC PSI sense and TV brake pedal switch
sense.
The P2/P3 will lead the TV braking if the pedal switch is setup well.
I can stop the whole thing just by touching the pedal and NOT go far
enough to develop MC PSI, which is what MC PSI sensed can NOT do without
that pedal switch sense
From this base line info, my guess is that the whole issue at hand is
with the software algorithms. Also why asking if the ITBM also has
an accelerometer. Without one, the software will go to look up tables
for MC PSI vs output of the ITBM to the plug
Curious why they reduced the output for the higher class truck vs the
lower class truck. The P2/P3 is NOT dependent on MC PSI...just decel
rate. Assumption is that your chart is interpolated to pedal/MC PSI
for the Prodigy and seems the engineers used those metrics for their
look up table. If they looked at my setup, where there is no MC PSI...what
would they have done?
Another potential issue is voltage drop at the magnets. Again need to
know where you measured the trailer brake current draw. At the TV plug
or at the trailer brake wires leading into the backing plate.
Also, all of those algorithms go out the window if the TV has performance
braking upgrades/mods...
Still not sold on PWM for inductive actuators on a self wedging drum/shoe
setup. Why ABS doesn't work well for vehicles with drum/shoe setups.
Where to put the tone ring (gear ring) and most put it on the drive
shaft. That self wedging shoes do NOT release quickly or fast enough
for ABS cycling. They could increase the release spring tension, but
then the two curves would be going in the wrong directions...it would
still help and better than no PWM
It would be good to see the output as you have captured vs the actual
at the trailer magnet, but almost impossible to do easily
The P2/P3 are inertia based, so the only association with the TV brake
pedal is as the initiator. Factored by the boost setting.
Once it senses deceleration, it will continue to increase braking until
either the TV brake pedal switch is deactivated or deceleration drops
below some preset or stops
I readjust the trailer brakes throughout the trip, as they need to be
very tight for my style of driving
Why asked if the ITBM has both MC PSI sense and TV brake pedal switch
sense.
The P2/P3 will lead the TV braking if the pedal switch is setup well.
I can stop the whole thing just by touching the pedal and NOT go far
enough to develop MC PSI, which is what MC PSI sensed can NOT do without
that pedal switch sense
From this base line info, my guess is that the whole issue at hand is
with the software algorithms. Also why asking if the ITBM also has
an accelerometer. Without one, the software will go to look up tables
for MC PSI vs output of the ITBM to the plug
Curious why they reduced the output for the higher class truck vs the
lower class truck. The P2/P3 is NOT dependent on MC PSI...just decel
rate. Assumption is that your chart is interpolated to pedal/MC PSI
for the Prodigy and seems the engineers used those metrics for their
look up table. If they looked at my setup, where there is no MC PSI...what
would they have done?
Another potential issue is voltage drop at the magnets. Again need to
know where you measured the trailer brake current draw. At the TV plug
or at the trailer brake wires leading into the backing plate.
Also, all of those algorithms go out the window if the TV has performance
braking upgrades/mods...
