Replace vacuum/hydraulic actuator

[Buttercup]

I am thinking of going ahead and just replacing my vacuum/hydraulic actuator with an Actibrake® actuator. But I am not really wanting to replace everything (calipers, hoses, etc..). The rotors need turning and new pads are in order. But if all else is in good shape – does anybody know of a good reason why the actuator alone can’t be replaced – saving money?? I would also prefer not to have to install a vacuum line on our TV if I don’t have to.

[uwe]

You can definitely replace the vac system with an electric/hydraulic actuator, and most likely end up with an excellent braking system.
You need to make sure of a few things, though. A very reliable power supply is necessary, ideally connecting the trailer battery, actuator, and charge line from the vehicle. The charge line must be dimensioned to the specs of the actuator. Make sure you have good brake pads, and fresh brake fluid.
I am using a hydraulic disc braking system in my 1963 Overlander. I am in the middle of installation of the actuator right now. I look forward to powerful brakes on our Colorado trip this summer.

[markdoane]

Sounds wonderful! Why made you decide on the Actibrake, as opposed to the other units that are available?

[Buttercup]

uwe & markdoane,

Thanks for your replies.
I am not set on the Actibrake but use it as a generic reference to a hydraulic actuator. However I do like the capacity of that unit compared to a few other units on the market.
I am open to suggestions on other actuators for comparison.

[markdoane]

Tim/Kimber,

I was looking for someone to do an in-depth analysis of price and features.
In addition to the Actibrake, there are two units made by Carlisle (Hydrastar and Electrastar), the ElecDraulic unit by Masterbrake, and probably some others. I don't have experience with any of them, and thought it would be usful to start a discussion of the merits (and demerits) of what's available. I did find out that these are called EHB (electro-hydraulic) systems.

I am waiting for an EMB (electro-mechanical) system, that uses servomotors to drive the calipers on a disk brake. The advantage is they can be set up to work as part of a vehicle stability system and don't have any lag time. The disadvantage is they operate on 42 Vdc, cost a fortune, and won't be available for several years.

[Craig T]

I'm using the Hydrastar (1000 psi) unit on a 1959 18' Traveler and have been impressed with its performance so far. It is being controlled by a Techonsha Voyager unit and has good adjustability up to lock up.