| [GMCnet] Disc Brake Park Brake Again [message #241678] |
Thu, 27 February 2014 16:34  |
Thomas Pryor
Messages: 143
Registered: January 2011
Karma: 1
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Senior Member |
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I hope most you take positively my updates on the many comments recently
posted on this thread.
All Parking brakes are still Drum/Shoe Technology. I found no Hydraulics
systems used keep a vehicle in our weight Range used as PB.
Brake Actuation ,howerver is changing..........With a push of a
button....... Linear actuators are pulling cables and small servo motors
are clamping Rotors embedded in calipers.
It appears that most of these systems are on mostly Hi end cars and trucks.
I'm sure they will migrate to lower end products quickly.
No matter how you cut it, Parking brakes are still mechanical.............
but they have evolved into very costly electromechanical systems. Rob
Mueller you were correct about the Volkswagen, Push the button only after
you depress the service brake pedal and you have a motor actuated clamp on
the rear Disc. I wonder what the replacement tab will be when the motors
stop living in that environment?
It would appear that we could retrofit our coaches with some new Technology
that is available to mobility impaired drivers. Take look at the info URLs
listed below.
I and 15 other folks still like the DRUM/DRUM Version of the reaction arm
technology. I Will continue my journey with my manual rear drum PB solution
In an effort to help the Disc brake folks who have nothing.
Let's not forget the Branscombe PB Cable sytem for you folks that
have stayed with the DRUM/DRUM technology. When you look at the
alternatives, his efforts are very simple and cost effective! BTW he has a
few potent KH Ball ramp calipers that are mechanical and at last check they
were still available.
Here are URLs that tell the rest story!
http://www.conti-online.com/www/automotive_de_en/themes/passenger_cars/chassis_safety/hydraulic/feststellbremsen_en.html
http://www.estopp.com/#!about/c1x9v
http://www.creativecontrolsinc.com/products/epb.htm
--
Regards,
Tom Pryor
4188 Limerick Dr
Lake Wales, Fl 33859
Cell 248 470 9186
Living on a waterfront is not a matter of life or death. Its more
important than that.
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| Re: [GMCnet] Disc Brake Park Brake Again [message #241695 is a reply to message #241678] |
Thu, 27 February 2014 19:19  |
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USAussie
Messages: 15912
Registered: July 2007
Location: Sydney, Australia
Karma: 6
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Senior Member |
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Tom,
Thanks for the links!
I wouldn't be concerned about the "replacement tab" those calipers (Continental?) were designed by GERMAN engineers! ;-)
Regards,
Rob M.
Sydney, Australia
AUS '75 Avion - The Blue Streak TZE365V100428
USA '75 Avion - Double Trouble TZE365V100426
-----Original Message-----
From: gmclist-bounces@temp.gmcnet.org [mailto:gmclist-bounces@temp.gmcnet.org] On Behalf Of Thomas Pryor
Sent: Friday, February 28, 2014 9:35 AM
To: gmclist@temp.gmcnet.org
Subject: [GMCnet] Disc Brake Park Brake Again
I hope most you take positively my updates on the many comments recently posted on this thread.
All Parking brakes are still Drum/Shoe Technology. I found no Hydraulics systems used keep a vehicle in our weight Range used as PB.
Brake Actuation ,howerver is changing..........With a push of a button....... Linear actuators are pulling cables and small servo
motors
are clamping Rotors embedded in calipers.
It appears that most of these systems are on mostly Hi end cars and trucks. I'm sure they will migrate to lower end products
quickly.
No matter how you cut it, Parking brakes are still mechanical............. but they have evolved into very costly electromechanical
systems. Rob Mueller you were correct about the Volkswagen, Push the button only after you depress the service brake pedal and you
have a motor actuated clamp on the rear Disc. I wonder what the replacement tab will be when the motors stop living in that
environment?
It would appear that we could retrofit our coaches with some new Technology that is available to mobility impaired drivers. Take
look at the info URLs listed below.
I and 15 other folks still like the DRUM/DRUM Version of the reaction arm technology. I Will continue my journey with my manual rear
drum PB solution In an effort to help the Disc brake folks who have nothing.
Let's not forget the Branscombe PB Cable sytem for you folks that have stayed with the DRUM/DRUM technology. When you look at the
alternatives, his efforts are very simple and cost effective! BTW he has a few potent KH Ball ramp calipers that are mechanical and
at last check they were still available.
Here are URLs that tell the rest story!
http://www.conti-online.com/www/automotive_de_en/themes/passenger_cars/chassis_safety/hydraulic/feststellbremsen_en.html
http://www.estopp.com/#!about/c1x9v
http://www.creativecontrolsinc.com/products/epb.htm
Regards,
Tom Pryor
4188 Limerick Dr
Lake Wales, Fl 33859
Cell 248 470 9186
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
Regards,
Rob M. (USAussie)
The Pedantic Mechanic
Sydney, Australia
'75 Avion - AUS - The Blue Streak TZE365V100428
'75 Avion - USA - Double Trouble TZE365V100426
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| Re: [GMCnet] Disc Brake Park Brake Again [message #241700 is a reply to message #241678] |
Thu, 27 February 2014 19:51 |
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WildBill
Messages: 232
Registered: January 2014
Karma: 1
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Senior Member |
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Actually our older decider trucks were gas jobs and the airline went with juice brakes and the park brakes were spring applied with a hydraulic actuated, well like a maxi pot. You needed hydraulic (power steering pump) pressure to release the park brake, had a switch or if the engine died they would apply. Had to Ron a separate ps pump though,
So that got me to thinking, how about a maxi pot? You have air anyway for release. They do work backwards, push apply so you would have to build a fulcrum but they are pretty cheap and with the travel provided with the maxi pot and the travel needed by the park brake optimization of fulcrum length should be able to hold well with flick of the switch application.
[Updated on: Thu, 27 February 2014 20:08] Report message to a moderator |
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| Re: [GMCnet] Disc Brake Park Brake Again [message #241733 is a reply to message #241731] |
Thu, 27 February 2014 23:04 |
Mr ERFisher
Messages: 7117
Registered: August 2005
Karma: 2
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Senior Member |
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On Thu, Feb 27, 2014 at 8:56 PM, Jack Christensen <captjack@sonic.net>wrote:
>
>
> Then there's always the hydraulic Mico brake lock. But, I didn't find the
> installation instructions to be accurate.
> what did you find wrong?
>
erf
>
>
> http://gmcmotorhome.info/BRKLOCK.html
> --
> Jack Christensen - K6ROW,
> '76 Glenbrook/Clasco - "The Silver Bullet",
> '65 Clark Cortez,
> Sebastopol, CA
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
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>
--
Gene Fisher -- 74-23,77PB/ore/ca
"Give a man a fish; you have fed him for today --- give him a URL and
-------
http://gmcmotorhome.info/
Alternator Protection Cable
http://gmcmotorhome.info/APC.html
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