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Home » Public Forums » GMCnet » GMC Reaction arm system by Chuck Aulgur (The system works great - we got to drive it and test it ourselves)
GMC Reaction arm system by Chuck Aulgur [message #85771] Sun, 23 May 2010 23:38 Go to next message
armandminnie is currently offline  armandminnie   United States
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Registered: May 2009
Location: Marana, AZ
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Today at the GMCWS rally in Auburn Chuck Aulgur and Rick Flanagan gave a presentation on the "reaction arm" braking system that they designed and developed for the GMC. I believe that Chuck is the inventor and initial designer and engineer and then Rick made changes that make it manufacturable.

After the presentation anyone who wanted to was allowed to drive Rick's coach which is one of only 4 coaches with the system installed. We went for a ride around Auburn and were encouraged to get the coach up to speed and then stop as fast as we could. I would have to say Rick's coach stopped as easily and quickly as a car. A panic stop at 35 mph and up made virtually no skidding noise. If any tires made noise it was the front and not the back.

Steve Ferguson said that the coach stopped better than his 2010 pickup truck and called this the best single improvement in the GMC motorhome since its inception.

Thanks to Rick for letting me drive it - amazing and on my list of future enhancements for my coach.


Armand Minnie
Marana, AZ
'76 Eleganza II TZE166V103202
visit my gmc blog
click here to visit gmcws.org
Re: GMC Reaction arm system by Chuck Aulgur [message #85773 is a reply to message #85771] Sun, 23 May 2010 23:47 Go to previous messageGo to next message
WD0AFQ is currently offline  WD0AFQ   United States
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Location: Dexter, Mo.
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Hey Armand. I really appreciate you sharing that report.
dan


3 In Stainless Exhaust Headers One Ton All Discs/Reaction Arm 355 FD/Quad Bag/Alum Radiator Manny Tran/New eng. Holley EFI/10 Tire Air Monitoring System Solarized Coach/Upgraded Windows Satelite TV/On Demand Hot Water/3Way Refer
Re: GMC Reaction arm system by Chuck Aulgur [message #85795 is a reply to message #85771] Mon, 24 May 2010 08:16 Go to previous messageGo to next message
armandminnie is currently offline  armandminnie   United States
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In case I didn't make it clear in the previous post, we were unable to make the well worn rear tires (his test tires) slide at all. No flat spots.

Armand Minnie
Marana, AZ
'76 Eleganza II TZE166V103202
visit my gmc blog
click here to visit gmcws.org
Re: [GMCnet] GMC Reaction arm system by Chuck Aulgur [message #85804 is a reply to message #85771] Mon, 24 May 2010 08:57 Go to previous messageGo to next message
Steven Ferguson is currently offline  Steven Ferguson   United States
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Registered: May 2006
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Senior Member
Netters,
With no reservations I must add that I think that there has been no
other improvement or device made since production of the GMC that
ranks even close to Chuck Aulgur's reaction arm system. I have seen
and heard the presentation twice before and it does not do the device
justice. Once Chuck starts speaking like a rocket scientist, he
loses nearly everyone in the audience and I think that has been the
problem. Rick Flannigan did the CAD reverse engineering on Chucks
device to simplify manufacturing of the parts and has one of the four
units out there installed on his coach. No matter how hard Chuck
worked to explain how the device worked, no lights came on until the
rubber hit the road. To simplify the explanation, Chuck's reaction
arm harnesses the energy that causes weight transfer, or the braking
action that causes the rearl of the coach to lift, when the brakes are
applied in ALL situations and in every braking application. Word
spread quickly once a few of us rode in, or drove Rick's coach and got
to try the device through town, then out on the freeway on flats,
hills, and stop and go traffic.
I still can't believe how incredible and controllable the coach's
brakes were. After just two stops, it felt as though I had been
driving it for years. I have 9 vehicles registered and on the road and
none of them brake as well and as predicable as Rick's coach. Stop
after stop, mile after mile, those brakes stopped as well and as
consistantly as they did at the first stop sign out of the park.
Armand quoted me correctly when he said that I reported that even my
new 2010 Chev pickup truck doesn't respond to braking action as well
as Rick's coach, neither does my '94 Caprice. If you've ever pulled a
towed with a tow car braking system installed and had to do a hard
stop, you were probably thankful for the toad's brakes. Well,
multiply that by two and you will just begin to understand how well
the reaction arm enhances the GMC brake system, with one exception, NO
nose dive, Nada, zip, none. Word spread quickly at the rally and by
the time dinner was served, about half of the attendees at this rally
either rode in the coach or test drove Rick's coach and all had the
same reaction. Every GMCer walked out the door shaking his head and
was smiling in amazement. No BS, just fact. You could have cooked
anything you wanted on Ricks Alcoas by the end of the day because of
the heat from the hundreds of braking applications but what is
significant about this statememt is that ALL wheels were within a few
degrees of each other meaning that each brake was doing the same
amount of work.
This is without a doubt, the single best innovation anyone has come
up with for the GMC in the history of the GMC. No matter what GMC
coach the future holds for me, this system is now at the top of the
list.
BTW, that bicycle gizmo was a mock up of the reaction arm complete
with gauges used to quantify the reaction forces that occur during a
typical brake application. I almost understood how it worked until
Chuck started explaining it to me :>)
I tell you, these rocket scientists...........

On Sun, May 23, 2010 at 9:38 PM, Armand Minnie <armand@minniebiz.com> wrote:
>
>
> Today at the GMCWS rally in Auburn Chuck Aulgur and Rick Flanagan gave a presentation on the "reaction arm" braking system that they designed and developed for the GMC.  I believe that Chuck is the inventor and initial designer and engineer and then Rick made changes that make it manufacturable.
>
> After the presentation anyone who wanted to was allowed to drive Rick's coach which is one of only 4 coaches with the system installed.  We went for a ride around Auburn and were encouraged to get the coach up to speed and then stop as fast as we could.  I would have to say Rick's coach stopped as easily and quickly as a car.  A panic stop at 35 mph and up made virtually no skidding noise.  If any tires made noise it was the front and not the back.
>
> Steve Ferguson said that the coach stopped better than his 2010 pickup truck and called this the best single improvement in the GMC motorhome since its inception.
>
> Thanks to Rick for letting me drive it - amazing and on my list of future enhancements for my coach.
> --
> Armand Minnie
> Marana, AZ
> '76 Eleganza II
> TZE166V103202
> _______________________________________________
> GMCnet mailing list
> List Information and Subscription Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>



--
Steve Ferguson
'76 EII
Sierra Vista, AZ
Urethane bushing source
www.bdub.net/ferguson/
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Re: [GMCnet] GMC Reaction arm system by Chuck Aulgur [message #85826 is a reply to message #85804] Mon, 24 May 2010 10:39 Go to previous messageGo to next message
Ken Henderson is currently offline  Ken Henderson   United States
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Registered: March 2004
Location: Americus, GA
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Steve,

It's great to hear some feedback. My expectations were great, and it sounds
as if they are exceeded. Wonderful!

One thing you didn't address that's important: What is the rest of Rick's
brake configuration? Without minimizing the importance of Chuck's design at
all, reaction forces are of little importance without good brakes.

Ken H.


On Mon, May 24, 2010 at 9:57 AM, Steven Ferguson <botiemad11@gmail.com>wrote:

> Netters,
> With no reservations I must add that I think that there has been no
> other improvement or device made since production of the GMC that
> ranks even close to Chuck Aulgur's reaction arm system...
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Ken Henderson
Americus, GA
www.gmcwipersetc.com
Large Wiring Diagrams
76 X-Birchaven
76 X-Palm Beach
Re: [GMCnet] GMC Reaction arm system by Chuck Aulgur [message #85914 is a reply to message #85826] Mon, 24 May 2010 19:28 Go to previous messageGo to next message
Steven Ferguson is currently offline  Steven Ferguson   United States
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Registered: May 2006
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Senior Member
Ken,
Sensatized booster, 6 disk system. It also uses a disk brake
application combination/prop valve. He also has a quadrabag system
but that is not necessary. This system will work with drum brakes but
the backing plates do not lend themselves to the easy to make brackets
that the disk brakes do. It is doable (that was one of the questions)
if you make the adapter. Not a whole lot to this thing at first
glance but it is very well engineered. If the bracket for the arm
brakes, you do not lose your brakes and you can continue your journey.
Of the systems out there, no one has broken one so far. It
free-floats and any more information than that and you'll have to find
access to the CAD drawings yourself.
We are so lucky to have antiques with this kind of support and these
kind of improvements being invented.

On Mon, May 24, 2010 at 8:39 AM, Ken Henderson <hend4800@bellsouth.net> wrote:
> Steve,
>
> It's great to hear some feedback.  My expectations were great, and it sounds
> as if they are exceeded.  Wonderful!
>
> One thing you didn't address that's important:  What is the rest of Rick's
> brake configuration?  Without minimizing the importance of Chuck's design at
> all, reaction forces are of little importance without good brakes.
>
> Ken H.
>
>
> On Mon, May 24, 2010 at 9:57 AM, Steven Ferguson <botiemad11@gmail.com>wrote:
>
>> Netters,
>>  With no reservations I must add that I think that there has been no
>> other improvement or device made since production of the GMC that
>> ranks even close to Chuck Aulgur's reaction arm system...
> _______________________________________________
> GMCnet mailing list
> List Information and Subscription Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>



--
Steve Ferguson
'76 EII
Sierra Vista, AZ
Urethane bushing source
www.bdub.net/ferguson/
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Re: [GMCnet] GMC Reaction arm system by Chuck Aulgur [message #85915 is a reply to message #85914] Mon, 24 May 2010 19:33 Go to previous messageGo to next message
Ken Henderson is currently offline  Ken Henderson   United States
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Registered: March 2004
Location: Americus, GA
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Senior Member
Steve,

Do you happen to have an email address for Rick? I'd like to hear the
nitty-gritty details about the "6 disk system": Disks, calipers, pads, etc.

Ken H.


On Mon, May 24, 2010 at 8:28 PM, Steven Ferguson <botiemad11@gmail.com>wrote:

> Ken,
> Sensatized booster, 6 disk system. It also uses a disk brake
> application combination/prop valve. He also has a quadrabag system
> but that is not necessary. This system will work with drum brakes but
> the backing plates do not lend themselves to the easy to make brackets
> that the disk brakes do. It is doable (that was one of the questions)
> if you make the adapter. Not a whole lot to this thing at first
> glance but it is very well engineered. If the bracket for the arm
> brakes, you do not lose your brakes and you can continue your journey.
> Of the systems out there, no one has broken one so far. It
> free-floats and any more information than that and you'll have to find
> access to the CAD drawings yourself.
> We are so lucky to have antiques with this kind of support and these
> kind of improvements being invented.
>
> On Mon, May 24, 2010 at 8:39 AM, Ken Henderson <hend4800@bellsouth.net>
> wrote:
> > Steve,
> >
> > It's great to hear some feedback. My expectations were great, and it
> sounds
> > as if they are exceeded. Wonderful!
> >
> > One thing you didn't address that's important: What is the rest of
> Rick's
> > brake configuration? Without minimizing the importance of Chuck's design
> at
> > all, reaction forces are of little importance without good brakes.
> >
> > Ken H.
> >
> >
> > On Mon, May 24, 2010 at 9:57 AM, Steven Ferguson <botiemad11@gmail.com
> >wrote:
> >
> >> Netters,
> >> With no reservations I must add that I think that there has been no
> >> other improvement or device made since production of the GMC that
> >> ranks even close to Chuck Aulgur's reaction arm system...
> > _______________________________________________
> > GMCnet mailing list
> > List Information and Subscription Options:
> > http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
> >
>
>
>
> --
> Steve Ferguson
> '76 EII
> Sierra Vista, AZ
> Urethane bushing source
> www.bdub.net/ferguson/
> _______________________________________________
> GMCnet mailing list
> List Information and Subscription Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>
_______________________________________________
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Ken Henderson
Americus, GA
www.gmcwipersetc.com
Large Wiring Diagrams
76 X-Birchaven
76 X-Palm Beach
Re: GMC Reaction arm system by Chuck Aulgur [message #85919 is a reply to message #85771] Mon, 24 May 2010 19:53 Go to previous messageGo to next message
WD0AFQ is currently offline  WD0AFQ   United States
Messages: 7111
Registered: November 2004
Location: Dexter, Mo.
Karma: 207
Senior Member
Oh, I did not know they could be taylored for drums. I am willing to be a guinea pig. I am like Steve, but less informed, I love the setup Chuck and Rick are doing.
Dan


3 In Stainless Exhaust Headers One Ton All Discs/Reaction Arm 355 FD/Quad Bag/Alum Radiator Manny Tran/New eng. Holley EFI/10 Tire Air Monitoring System Solarized Coach/Upgraded Windows Satelite TV/On Demand Hot Water/3Way Refer
Re: GMC Reaction arm system by Chuck Aulgur [message #85932 is a reply to message #85771] Mon, 24 May 2010 20:19 Go to previous messageGo to next message
captjack is currently offline  captjack   United States
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Wow! I too drove Rick's coach. As was said earlier, until the rubber hits the road, you don't get it. It stops just like a car. No need to shift down on steep downgrades and tax your transmission. You've got 6 wheel disks doing their job, not just 3 1/2 wheels braking as in the present setup when the backs lock up.

Jim Kanomata is selling the setup, so you can get quotes on the system from him. Preliminary parts estimates (which included converting all four back wheels to disks) were in the $4000 ballpark according to him. Jim estimated installation labor around 10 to 12 hours.

It really isn't practical to install the system on drum brakes according to Chuck. Developing a mounting plate to mount the system on a drum brake backing plate is difficult because of the lack of a flat surface to mount the hardware. I doubt you'll see this combo.



Jack Christensen - K6ROW, '76 Glenbrook/Clasco - "The Silver Bullet", Sebastopol, CA
Re: [GMCnet] GMC Reaction arm system by Chuck Aulgur [message #85933 is a reply to message #85915] Mon, 24 May 2010 20:17 Go to previous messageGo to next message
USAussie is currently offline  USAussie   United States
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Registered: July 2007
Location: Sydney, Australia
Karma: 6
Senior Member
Ken,

IIRC from when Chuck presented the system at Pueblo he noted that you needed
this setup:

http://www.appliedgmc.com/prod.itml/icOid/594

Regards,
Rob Mueller
Sydney, Australia
AUS '75 Avion-The Blue Streak TZE365V100428
USA '75 Avion-Double Trouble TZE365V100426


-----Original Message-----
From: Ken Henderson

Steve,

Do you happen to have an email address for Rick? I'd like to hear the
nitty-gritty details about the "6 disk system": Disks, calipers, pads, etc.

Ken H.

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Regards, Rob M. (USAussie) The Pedantic Mechanic Sydney, Australia '75 Avion - AUS - The Blue Streak TZE365V100428 '75 Avion - USA - Double Trouble TZE365V100426
Re: [GMCnet] GMC Reaction arm system by Chuck Aulgur [message #85947 is a reply to message #85915] Mon, 24 May 2010 21:14 Go to previous messageGo to next message
Steven Ferguson is currently offline  Steven Ferguson   United States
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Registered: May 2006
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Senior Member
No I don't Ken. Give Jim a call as he's the investor behind this.
Seems like I recall it's the Eldo disks that so many are already
using. 80mm fronts, EBC yellow stuff pads. If you already have the 6
wheel disks and sensetized booster, you are way ahead of the game.
For those with the Powermaster setup, the reservoir is more than up to
it.

On Mon, May 24, 2010 at 5:33 PM, Ken Henderson <hend4800@bellsouth.net> wrote:
> Steve,
>
> Do you happen to have an email address for Rick?  I'd like to hear the
> nitty-gritty details about the "6 disk system":  Disks, calipers, pads, etc.
>
> Ken H.
>
>
> On Mon, May 24, 2010 at 8:28 PM, Steven Ferguson <botiemad11@gmail.com>wrote:
>
>> Ken,
>>  Sensatized booster, 6 disk system.  It also uses a disk brake
>> application combination/prop valve.  He also has a quadrabag system
>> but that is not necessary.  This system will work with drum brakes but
>> the backing plates do not lend themselves to the easy to make brackets
>> that the disk brakes do.  It is doable (that was one of the questions)
>> if you make the adapter.  Not a whole lot to this thing at first
>> glance but it is very well engineered.  If the bracket for the arm
>> brakes, you do not lose your brakes and you can continue your journey.
>>  Of the systems out there, no one has broken one so far.  It
>> free-floats and any more information than that and you'll have to find
>> access to the CAD drawings yourself.
>>  We are so lucky to have antiques with this kind of support and these
>> kind of improvements being invented.
>>
>> On Mon, May 24, 2010 at 8:39 AM, Ken Henderson <hend4800@bellsouth.net>
>> wrote:
>> > Steve,
>> >
>> > It's great to hear some feedback.  My expectations were great, and it
>> sounds
>> > as if they are exceeded.  Wonderful!
>> >
>> > One thing you didn't address that's important:  What is the rest of
>> Rick's
>> > brake configuration?  Without minimizing the importance of Chuck's design
>> at
>> > all, reaction forces are of little importance without good brakes.
>> >
>> > Ken H.
>> >
>> >
>> > On Mon, May 24, 2010 at 9:57 AM, Steven Ferguson <botiemad11@gmail.com
>> >wrote:
>> >
>> >> Netters,
>> >>  With no reservations I must add that I think that there has been no
>> >> other improvement or device made since production of the GMC that
>> >> ranks even close to Chuck Aulgur's reaction arm system...
>> > _______________________________________________
>> > GMCnet mailing list
>> > List Information and Subscription Options:
>> > http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>> >
>>
>>
>>
>> --
>> Steve Ferguson
>> '76 EII
>> Sierra Vista, AZ
>> Urethane bushing source
>> www.bdub.net/ferguson/
>> _______________________________________________
>> GMCnet mailing list
>> List Information and Subscription Options:
>> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>>
> _______________________________________________
> GMCnet mailing list
> List Information and Subscription Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>



--
Steve Ferguson
'76 EII
Sierra Vista, AZ
Urethane bushing source
www.bdub.net/ferguson/
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Re: GMC Reaction arm system by Chuck Aulgur [message #85948 is a reply to message #85771] Mon, 24 May 2010 21:19 Go to previous messageGo to next message
jknezek is currently offline  jknezek   United States
Messages: 1057
Registered: December 2007
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Senior Member
This is interesting. Couldn't follow Chuck's explanation the times he's posted it on here. I'm not that smart. Fortunately I can certainly understand people telling me it works from experiences. I guess you can put a price on good brakes. One of these days I'll have to figure out how to afford it.

Thanks,
Jeremy Knezek
1976 Glenbrook
Birmingham, AL
Re: [GMCnet] GMC Reaction arm system by Chuck Aulgur [message #85953 is a reply to message #85948] Mon, 24 May 2010 21:32 Go to previous messageGo to next message
Steven Ferguson is currently offline  Steven Ferguson   United States
Messages: 3447
Registered: May 2006
Karma: 0
Senior Member
Jeremy,

BMW has an option for motorcycles that does the same thing. It was
called an Earl's Fork back in 1949, I don't know what they call it
now. It is basically the same though. The harder you apply the front
brakes, the more the front end rises. The reaction arm works on the
same principle and after hours of hard stops and stop and go driving,
the rear Alcoas are actually slightly warmer than the fronts. (This
is contrary to what I posted earlier.)
Part of Charles presentation is his explanation of why the GMC really
only has three wheel braking. Two fronts and half each on the two fwd
rears. You put those rears to work and the difference is just plain
unbelievable.

On Mon, May 24, 2010 at 7:19 PM, Jeremy <jtknezek@hotmail.com> wrote:
>
>
> This is interesting. Couldn't follow Chuck's explanation the times he's posted it on here. I'm not that smart. Fortunately I can certainly understand people telling me it works from experiences. I guess you can put a price on good brakes. One of these days I'll have to figure out how to afford it.
> --
> Thanks,
> Jeremy Knezek
> 1976 Glenbrook
> Birmingham, AL
> _______________________________________________
> GMCnet mailing list
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> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>



--
Steve Ferguson
'76 EII
Sierra Vista, AZ
Urethane bushing source
www.bdub.net/ferguson/
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Re: [GMCnet] GMC Reaction arm system by Chuck Aulgur [message #85954 is a reply to message #85915] Mon, 24 May 2010 21:33 Go to previous messageGo to next message
ljdavick is currently offline  ljdavick   United States
Messages: 3548
Registered: March 2007
Location: Fremont, CA
Karma: -3
Senior Member
Oooh post here! I'm guessing there are a bunch of us who want to
know, though we'll not be able to afford it for some time.

Ljdavick at comcast.net

On May 24, 2010, at 5:33 PM, Ken Henderson <hend4800@bellsouth.net>
wrote:

> Steve,
>
> Do you happen to have an email address for Rick? I'd like to hear the
> nitty-gritty details about the "6 disk system": Disks, calipers,
> pads, etc.
>
> Ken H.
>
>
> On Mon, May 24, 2010 at 8:28 PM, Steven Ferguson
> <botiemad11@gmail.com>wrote:
>
>> Ken,
>> Sensatized booster, 6 disk system. It also uses a disk brake
>> application combination/prop valve. He also has a quadrabag system
>> but that is not necessary. This system will work with drum brakes
>> but
>> the backing plates do not lend themselves to the easy to make
>> brackets
>> that the disk brakes do. It is doable (that was one of the
>> questions)
>> if you make the adapter. Not a whole lot to this thing at first
>> glance but it is very well engineered. If the bracket for the arm
>> brakes, you do not lose your brakes and you can continue your
>> journey.
>> Of the systems out there, no one has broken one so far. It
>> free-floats and any more information than that and you'll have to
>> find
>> access to the CAD drawings yourself.
>> We are so lucky to have antiques with this kind of support and these
>> kind of improvements being invented.
>>
>> On Mon, May 24, 2010 at 8:39 AM, Ken Henderson <hend4800@bellsouth.net
>> >
>> wrote:
>>> Steve,
>>>
>>> It's great to hear some feedback. My expectations were great, and
>>> it
>> sounds
>>> as if they are exceeded. Wonderful!
>>>
>>> One thing you didn't address that's important: What is the rest of
>> Rick's
>>> brake configuration? Without minimizing the importance of Chuck's
>>> design
>> at
>>> all, reaction forces are of little importance without good brakes.
>>>
>>> Ken H.
>>>
>>>
>>> On Mon, May 24, 2010 at 9:57 AM, Steven Ferguson <botiemad11@gmail.com
>>> wrote:
>>>
>>>> Netters,
>>>> With no reservations I must add that I think that there has been no
>>>> other improvement or device made since production of the GMC that
>>>> ranks even close to Chuck Aulgur's reaction arm system...
>>> _______________________________________________
>>> GMCnet mailing list
>>> List Information and Subscription Options:
>>> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>>>
>>
>>
>>
>> --
>> Steve Ferguson
>> '76 EII
>> Sierra Vista, AZ
>> Urethane bushing source
>> www.bdub.net/ferguson/
>> _______________________________________________
>> GMCnet mailing list
>> List Information and Subscription Options:
>> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>>
> _______________________________________________
> GMCnet mailing list
> List Information and Subscription Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
_______________________________________________
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Larry Davick
A Mystery Machine
1976(ish) Palm Beach
Fremont, Ca
Howell EFI + EBL + Electronic Dizzy
Re: [GMCnet] GMC Reaction arm system by Chuck Aulgur [message #85961 is a reply to message #85954] Mon, 24 May 2010 22:05 Go to previous messageGo to next message
Keith V is currently offline  Keith V   United States
Messages: 2337
Registered: March 2008
Location: Mounds View,MN
Karma: 0
Senior Member
Floating calipers are really nothing new. I have a book called (amazingly) 'Brake systems' by HP books Copyright 1998. They talk about floating calipers, how to adjust them to change tire loading effects. They are common on dirt trackers and sprint cars. Where they are used to modify cornering during braking and to control pinion angle changes.

It's an obvious solution once the problem is determined. I'm too new to the GMC to know if the rear tire skidding was an understood problem or not, but the realization that the center axle lifts the coach was definitely a ground breaking insight.

This issue isn't a problem on single axle systems as who cares if the axle rotates a little during braking...

So the floating caliper is a well understood solution to brake torque jacking. And is a perfect solution to the problem.

Oh and to answer a question no one has asked, yet; Yes, you should run floaters on both axles. If you only run them on the front, the rear will still lift reducing traction on the rear axles.

Of course the whole backwards trailing arm on the front axle is the real problem and certainly causes more handling issues than just braking!


Keith Vasilakes
Mounds View. MN
75 ex Royale GMC
ask me about MicroLevel
Cell, 763-732-3419
My427v8@hotmail.com
Re: [GMCnet] GMC Reaction arm system by Chuck Aulgur [message #85978 is a reply to message #85804] Tue, 25 May 2010 01:44 Go to previous messageGo to next message
ljdavick is currently offline  ljdavick   United States
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I wonder if the reaction arm also gives some lateral (?) support to the front bogie in the manner of a True Track. I have True Tracks on the rear of my coach, an inheritance from my beloved PO, and I've never experienced wiggle, wobble, or tracking problems that I've heard of on this net. With the reports about the efficacy of these brakes I'll have to add them to my wish list, but I'd rather not loose the good handling.

I'm being very greedy and want to know more about this innovation.

Larry Davick
The Mystery Machine
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Larry Davick
A Mystery Machine
1976(ish) Palm Beach
Fremont, Ca
Howell EFI + EBL + Electronic Dizzy
Re: GMC Reaction arm system by Chuck Aulgur [message #86077 is a reply to message #85771] Tue, 25 May 2010 19:41 Go to previous messageGo to next message
philipswanson is currently offline  philipswanson   United States
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This is all very interesting stuff but let's see some supporting data. I wasn't at the rally but somebody needs to perform some real world stopping distance and brake fade tests with and without this system. Not just all this touchie, feelie stuff. Proof is in the pudding! Where is the data?

Phil Swanson
77GMCPB

Re: [GMCnet] GMC Reaction arm system by Chuck Aulgur [message #86089 is a reply to message #86077] Tue, 25 May 2010 21:36 Go to previous messageGo to next message
jimk is currently offline  jimk   United States
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Phil,
Data sheets were passed out at the seminar.
Larry,
The unit can be ordered to work with the True track unit.
Reaction Arm System will not do anything to keep the boggie arms from
moving laterally.
I have over 4,000 miles on my reaction arm system with majority miles
pulling the Olds Mini van with total weight of 6,000 lbs.
I'm a true Ornamental driver; all gas or all brake.





On Tue, May 25, 2010 at 5:41 PM, Phil Swanson <woodyman1@sbcglobal.net> wrote:
>
>
> This is all very interesting stuff but let's see some supporting data.  I wasn't at the rally but somebody needs to perform some real world stopping distance and brake fade tests with and without this system.  Not just all this touchie, feelie stuff.  Proof is in the pudding! Where is the data?
>
> Phil Swanson
> 77GMCPB
>
>
> _______________________________________________
> GMCnet mailing list
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>



--
Jim Kanomata
Applied/GMC, Fremont,CA
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Jim Kanomata
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Re: [GMCnet] GMC Reaction arm system by Chuck Aulgur [message #86093 is a reply to message #86089] Tue, 25 May 2010 21:49 Go to previous messageGo to next message
Carl S. is currently offline  Carl S.   United States
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Jim K said: "I'm a true Ornamental driver; all gas or all brake."

Hey, that's how my brother-in-law drives and he's from Kokomo!!!


Carl Stouffer '75 ex Palm Beach Tucson, AZ. Chuck Aulgur Reaction Arm Disc Brakes, Quadrabags, 3.70 LSD final drive, Lenzi knuckles/hubs, Dodge Truck 16" X 8" front wheels, Rear American Eagles, Solar battery charging. GMCSJ and GMCMI member
Re: [GMCnet] GMC Reaction arm system by Chuck Aulgur [message #86095 is a reply to message #86089] Tue, 25 May 2010 22:24 Go to previous messageGo to previous message
USAussie is currently offline  USAussie   United States
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Jim,

How about posting them on your website under Instructions?

Regards,
Rob Mueller
Sydney, Australia
AUS '75 Avion-The Blue Streak TZE365V100428
USA '75 Avion-Double Trouble TZE365V100426


-----Original Message-----
From: Jim Kanomata

Data sheets were passed out at the seminar.

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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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