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Old 06-06-2013, 12:09 PM   #15
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Here it is...
Question.


Does your trailer have electric over hydraulic disc brakes?

Thanks,

Gary
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Old 06-07-2013, 04:34 AM   #16
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Nope. Electric drum brakes as far as I know. Is there an advantage to upgrading? Would the fluid reservoir be on the A-frame?
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Old 06-07-2013, 05:18 AM   #17
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Just checking, the OP's question was about controller choice with hydraulic brakes.
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Old 09-24-2014, 09:15 AM   #18
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I have the P3 and find my elec/Hyd brakes are very sensitive and I feel like the trailer is doing all the braking, I have it set to Hyd and have set it down to 0.3 and it still jerks when brakes are applied? This is my first AS with elec/ Hyd brakes, is this normal?
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Old 09-24-2014, 11:53 AM   #19
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Bob,

Sorry can't speak for the P3. I have a Maxbrake and braking is smooth, in unison and controlled. Disc brakes are strong but I suggest if possible a test drive with a TV with a different controller.

Gary
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Old 09-24-2014, 12:19 PM   #20
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I have the P3 with the Dexter actuator, and I have too much delay, but I suspect it is because of the hydraulic brakes, not because of the P3. It is also my understanding that the only difference between the P2 and the P3 is the latter has the option of different files for different trailers.
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Old 09-24-2014, 01:36 PM   #21
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Thanks for the input, I'm taking her down to a shop that specializes in installing brake controllers to check out my setup, I just bought the trailer and had the controller installed on the west coast. I'm back home in Texas now and am not comfy with how it's working...


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Old 09-24-2014, 01:40 PM   #22
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I have the P3 and find my elec/Hyd brakes are very sensitive and I feel like the trailer is doing all the braking, I have it set to Hyd and have set it down to 0.3 and it still jerks when brakes are applied? This is my first AS with elec/ Hyd brakes, is this normal?
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Are you running a Boost setting, or Boost=0? The P3 with electric brakes behaves quite differently in the different boost settings, but I'm not sure how much difference it makes with electric over hydraulic brakes.
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Old 09-24-2014, 01:51 PM   #23
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I have tried boost 1, 2, and now no boost selected. It's a little better with no boost, but still not smooth and it gets pretty touchy at low speeds and when backing into a space. My first step is to have the truck checked out, I'm hoping it's not the Hyd Syst on the AS...


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Old 09-24-2014, 02:05 PM   #24
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I have boost off and after using the AS more since I posted the original question I think I have a some delay still. Sometimes it seems I have to apply more pressure to stop at higher speeds with towing. Maybe more adjustment is needed but its hard to find a quiet straight road to play with it. It seems to brake OK when in those situations when green lights suddenly change and I'm in that gray zone of wondering if I should brake or go through the intersection but end up braking. I have a 2010 Toyota Tundra.

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Old 09-24-2014, 02:14 PM   #25
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I have boost off and after using the AS more since I posted the original question I think I have a some delay still. Sometimes it seems I have to apply more pressure to stop at higher speeds with towing. Maybe more adjustment is needed but its hard to find a quiet straight road to play with it. It seems to brake OK when in those situations when green lights suddenly change and I'm in that gray zone of wondering if I should brake or go through the intersection but end up braking. I have a 2010 Toyota Tundra.

Kelvin
I talked to Dexter about the delay, and they expect up to one second delay with their electric over hydraulic actuator, but mine is worse. Delay will increase with air in the hydraulic system.
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Old 09-24-2014, 07:25 PM   #26
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Goldwing1,

Can you fill us in on the history of the problem? Always been that way, just started, just started when I did this--------- or other.

Gary
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Old 09-25-2014, 08:11 AM   #27
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I drove from TX to OR to purchase the unit, I hooked my truck to the AS to check if the factory controller on my 2011 GMC 3500 would work the elec/hyd brakes. They did not work, so I had an RV shop install the p3 controller and we went from 2 volts to 9 volts at the trailer connection on my truck. It works the hyd pump fine, but it seems like I have no way to adjust the pwr for a smooth brake application. P3 manual says it should be set around 5.0 to 6.0, if I use that setting it will put you through the windshield, I drove from OR to TX with it set on 0.3 and its still jerky and not good at all at slow speeds.
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Old 09-25-2014, 09:20 AM   #28
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You have the same model year as my Classic 25fb. When researching the purchase of this trailer in 2013 I found there are two Airstream recalls for the brakes that had not been performed on my trailer. One is for the Actibrake controller and the other is for the brake lines at the axles. Actibrake is no longer in business. The issue is fluid leaks from the internal reservoir to the electronics. If yours has the Actibrake then it may be leaking and upsetting the way the controller works. Before I purchased my 2008 I had the Airstream dealer replace the Actibrake with the Dexter unit even though there was no evidence of internal leaking. I figured in the long run better to have a Dexter. The dealership replaced the brake line hoses as part of the recall.

http://www.airforums.com/forums/f439...ics-67620.html

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