Effective proportional break valves...

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Peter Rondel
Posts: 13
Joined: Tue Jan 28, 2014 9:18 pm

Effective proportional break valves...

Postby Peter Rondel » Wed Jan 18, 2017 11:17 pm

What's the latest wisdom for best option.

I've got a fairly healthy air supply, but with our carrier deck style landing strip i'm fed up on trying to manage a reliable response between skidding and insufficient power on the old "binary" system I currently have on an old Hawk.

Cheers

Harry Curzon
Posts: 35
Joined: Sat Aug 04, 2007 10:58 pm
Location: Cotswolds
Contact:

Re: Effective proportional break valves...

Postby Harry Curzon » Thu Jan 19, 2017 9:11 am

You might find that it's the brake units themselves and not the valve. Especially the expanding O ring type of brakes can be very notchy in response to the smoothest, most proportional pressure changes. Many people put a drop of oil on the wheel hub's brake surface which prevents or reduces the brakes from grabbing and locking the wheel. If you are using one of the pulsing electronic valves and you have put a restrictor on the outlet to prevent the huge loss of air associated with those valves, it backs up the air in the system so it behaves as all off or all on.

Peter Rondel
Posts: 13
Joined: Tue Jan 28, 2014 9:18 pm

Re: Effective proportional break valves...

Postby Peter Rondel » Fri Jan 20, 2017 11:42 pm

I've tried allsorts of work arounds. Prop is the way to go.

Just a case of product choice.

DAVID BUTT
Posts: 2
Joined: Mon Oct 29, 2007 11:55 am
Location: TWICKENHAM

Re: Effective proportional break valves...

Postby DAVID BUTT » Thu Apr 20, 2017 3:48 am

Maybe try using the demand valve by Festo. This allows you to set a fixed pressure regardless of reservoir pressure. A few test runs in quiet part of the runway to get good drag on brake drum without scuffing wheels and that's it forever


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