Actuator for Hydraulic brake Assembly

 YORAM 12 points

HK sells this and the disk assemblies separately. You have to get this and the disk to build a full system. You will also need a tank to store pressurized air. The system is pneumatic - works well. Didnt try it on hydraulic.

 Vassilis 2 points

its Hydraulic not pneumatic, just as the name implies.

 macrop 107 points

If it's an actuator, then it would be the other way around. I see it has a SMC sticker on it - that would make it half decent quality too.

 YORAM 12 points

It is a proportional brake valve and it is pneumatic. It works with the brake assemblies sold elsewhere in the site, but there is no system, you have to make fiure it out and make your own. Interesting products, allowing you to add brakes to your plane.

 hungrysteve 114 points

Hi Yoram,where did you find the brake assy's on HK site?...I would like to play with this idea.

 hungrysteve 114 points

AHA! found the brake assy(#11034).But is it that the rubber(?)pad itself makes contact with the wheel hub?,similar to an air system?.No need to make intermediate metal disk.any comments?

 YORAM 12 points

You have to find a metal disc (big washer) and attach it to the wheel, at a very short distance from the disc pad. When you apply the brake, the pad is pushed against the disc and slows it down.

 Volle 5 points

How many actuators a complete system needed (for two wheels)?
Which diameter pipe for this system?
Thank you for your answer

 Herbert 283 points

This is a hydraulic brake, works with oil only. The top valve is where the system is filled with brake oil. Each brake unit has a small bleed valve to release air from the system.

The festo-like 3mm fittings are for the oil circuit, you will need a suitable y-connector for two brakes.

The wheels require an aluminum inset that will fit the brake shoe, and receive the whole brake unit. A washer will not work.

 Grey Badger 14 points

HI HK: if someone has not already pointed out, please rename this product it is a pneumatic (air) brake assembly not a hydraulic (oil) one. This maybe causing some confusion?

 Grey Badger 14 points

Sorry wrong comment (eat humble pie)

 SDowell 13 points

In case people have missed the few correct remarks above - it is indeed hydraulic, and only hydraulic. It's a piston that applies force onto a body of oil. The stronger your servo, the more brake pressure, exactly like in a car (although there the servo does most of the work when boosted). Of course the piston will compress any remaining air in the system, hence the need for a certain travel, although ideally you should try to remove all the air (as it is far more compressible than oil).