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[GMCnet] MATH QUESTION / Aggressive Braking (revised Video) [message #196959] Thu, 31 January 2013 10:32 Go to next message
Thomas Pryor is currently offline  Thomas Pryor   United States
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Registered: January 2011
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Senior Member
On Weds. Jan 30 "Howard wrote";

Tom
Can you please give credit to Chuck Alger
He is the one who came up with the idea in the first place.
I first saw HIS that is Chuck's braking system at Steve and Nancy get
together in Arizona at least four years ago.
Thank You

All is well with my Lord
Howard
______________________________________________________________________________________________________________________________________________________ ___

Yes, Chuck Alger apparently applied the common knowledge of the 60's
vintage "Traction Control Arms" to the GMC. I never met Chuck Alger,
but my hat is off to him. Thanks Chuck A and others! ( Don Jeffers?)
______________________________________________________________________________________________________________________________________________________ ___

MY STORY:

When Larry Erd & I first got our coaches about two years ago we both
remarked about the need for "Control Arms" needed on the rear
suspension like I had on my 57 Chev and he had on his Sunbeam. The
original "TRACTION CONTROL ARMS" were for "Acceleration" and wheel
bounce created when racing. That is why we call this braking system
"BRAKE CONTROL" and not "REACTION CONTROL".

What ever the name, GM gave us rear suspension that was a work in
progress. They focused heavily on ride height, low profile for
ingress and egress, ride comfort with little attention to braking
requirements. As someone remarked in an earlier post, it was
advertised to stop like a Car. Remember it was a 55 MPH a world at
that time, before ABS and before Air Bags and for the most part "rock
hard instrument panels".

Because of the great original "total" design that has endured, we
proudly operate our vehicles today against all the technically
improved fleet of vehicles "at large."
Since then, we have dramatically pushed the envelope and scope of
these coaches to keep up with speed, acceleration and Torque
requirements so desirable today. We can get to speed "just quick
enough" with negligible risk. A stock coach is always at an
undesirable risk behind today's automotive stopping prowess.

Response to other comments/questions made recently;

+ The "CONTROL ARM" does not conflict with the Jack HOOK attachment device.
+ The "CONTROL ARM" will be upgraded to coexist with the Straight trak
enhancement that Jim K sells.
+ The "CONTROL ARM" was developed to use the original design without
adding the cost of Rotors, Calipers, brake lines, or Brake linings.
+ The "CONTROL ARM" was developed to be installed by "owner" in a
weekend with no special tools, machining or welding.


WATCH THE REVISED VIDEO and I hope this helps all who are interested.
>
> http://youtu.be/1peHuX6NpH0
>
> When Jim K gets his " _ _ __" together he will have it on his site.
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Re: [GMCnet] MATH QUESTION / Aggressive Braking (revised Video) [message #196961 is a reply to message #196959] Thu, 31 January 2013 10:49 Go to previous messageGo to next message
A Hamilto is currently offline  A Hamilto   United States
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Registered: April 2011
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Thomas Pryor wrote on Thu, 31 January 2013 10:32

...Yes, Chuck Alger apparently applied the common knowledge of the 60's vintage "Traction Control Arms" to the GMC. I never met Chuck Alger, but my hat is off to him. Thanks Chuck A and others! ( Don Jeffers?)
...
They had reaction arms on 60's vehicles that rotated about the axle? I never heard of, or saw, such a thing.
Re: [GMCnet] MATH QUESTION / Aggressive Braking (revised Video) [message #197043 is a reply to message #196961] Fri, 01 February 2013 07:52 Go to previous messageGo to next message
Matt Colie is currently offline  Matt Colie   United States
Messages: 8547
Registered: March 2007
Location: S.E. Michigan
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Senior Member
A Hamilto wrote on Thu, 31 January 2013 11:49

Thomas Pryor wrote on Thu, 31 January 2013 10:32

...Yes, Chuck Alger apparently applied the common knowledge of the 60's vintage "Traction Control Arms" to the GMC. I never met Chuck Alger, but my hat is off to him. Thanks Chuck A and others! ( Don Jeffers?)
...
They had reaction arms on 60's vehicles that rotated about the axle? I never heard of, or saw, such a thing.

Then apparently you are not a car guy from the 60's. Everybody that tried to drag race his own car with it's leaf spring rear end soon found themselves either buying or building traction bars. It was not uncommon to see some kid drive into (or maybe be brought on a hook) to a shop to get the damage of a rotated rear axle repaired. That damage was often bent springs and driveshaft problems. Those that had ripped up brake lines usually came in on the hook as this was before the dual master was common.

Or, if you were a dirt biker in the early 70's you would remember the Pentons. They introduced a "Floating" rear brake. It was originally accepted that this was to facilitate rear tire changes during the ISDT, but it was really done to stop the dance and skidder that was experienced when braking hard into a corner. All of a sudden, Pentons were finishing with the Bultacos. "I finally gives the rider the control of the rear that has been long sought." - from a Penton flyer

Do I acknowledge that Chuck and others did us a service?
Yes, but is was a development that had a history before he successfully transplanted it.

Matt



Matt & Mary Colie - Chaumière -'73 Glacier 23 - Members GMCMI, GMCGL, GMCES
Electronically Controlled Quiet Engine Cooling Fan with OE Rear Drum Brakes with Applied Control Arms
SE Michigan - Near DTW - Twixt A2 and Detroit
Re: [GMCnet] MATH QUESTION / Aggressive Braking (revised Video) [message #197051 is a reply to message #197043] Fri, 01 February 2013 09:44 Go to previous messageGo to next message
Keith V is currently offline  Keith V   United States
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Registered: March 2008
Location: Mounds View,MN
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Senior Member
well recognizing the problem as being brake torque and knowing about Full floating brakes and THEN building a working system is quite a feat.

I've known about floating brakes for a while, Most circle track cars use them, and some other race cars.

But Chuck got it to work on the GMC <thumbs up>


Keith Vasilakes
Mounds View. MN
75 ex Royale GMC
ask me about MicroLevel
Cell, 763-732-3419
My427v8@hotmail.com
Re: [GMCnet] MATH QUESTION / Aggressive Braking (revised Video) [message #197071 is a reply to message #197043] Fri, 01 February 2013 11:48 Go to previous messageGo to next message
A Hamilto is currently offline  A Hamilto   United States
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Matt Colie wrote on Fri, 01 February 2013 07:52

Then apparently you are not a car guy from the 60's. Everybody that tried to drag race his own car with it's leaf spring rear end soon found themselves either buying or building traction bars. It was not uncommon to see some kid drive into (or maybe be brought on a hook) to a shop to get the damage of a rotated rear axle repaired. That damage was often bent springs and driveshaft problems. Those that had ripped up brake lines usually came in on the hook as this was before the dual master was common.
I have seen lots of traction bars, but would never have thought of decoupling the brake drum backing plate from the axle.
Quote:

Or, if you were a dirt biker in the early 70's you would remember the Pentons. They introduced a "Floating" rear brake. ...
Not a biker, on or off road.
Re: [GMCnet] MATH QUESTION / Aggressive Braking (revised Video) [message #197093 is a reply to message #197071] Fri, 01 February 2013 15:52 Go to previous messageGo to next message
habbyguy is currently offline  habbyguy   United States
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A Hamilto wrote on Fri, 01 February 2013 10:48

I have seen lots of traction bars, but would never have thought of decoupling the brake drum backing plate from the axle.

It's not such a big deal. Heck, my Jeep Cherokee thought of that all on its own! I was showing my Texas nephew and niece how to do donuts (they had just experienced a very rare snowfall, and we were in an unbuilt subdivision, so there was nothing to hit). I'd crank up 15-20mph of momentum, crank the wheel and pull on the emergency brake, slide around and try to "bat turn" out of it to complete the 360 degree move.

What I didn't know is that the backing plate on one of my rear brakes was apparently very loose, and it sheared the bolts holding it on. SO... what started out as a perfectly benign donut turned into a lurching, sliding stop, spewing all my brake fluid all over the ground (not to mention slamming the e-brake lever down with a whole lot of force, which is a "unique" feeling). Fortunately I was able to drive the Jeep back to their house about 1/2 mile away because the streets were covered in snow, because I could go into 4WD, and because it didn't freak me out (too much...) to drive "straight" with the steering cranked almost to the lock and the vehicle crabbing about 30 degrees all the way with that one rear wheel locked up solid.

That was one expensive donut!


Mark Hickey Mesa, AZ 1978 Royale Center Kitchen
Re: [GMCnet] MATH QUESTION / Aggressive Braking (revised Video) [message #197125 is a reply to message #197093] Sat, 02 February 2013 10:15 Go to previous message
Matt Colie is currently offline  Matt Colie   United States
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habbyguy wrote on Fri, 01 February 2013 16:52

A Hamilto wrote on Fri, 01 February 2013 10:48

I have seen lots of traction bars, but would never have thought of decoupling the brake drum backing plate from the axle.

It's not such a big deal. Heck, my Jeep Cherokee thought of that all on its own! I was showing my Texas nephew and niece how to do donuts (they had just experienced a very rare snowfall, and we were in an unbuilt subdivision, so there was nothing to hit). I'd crank up 15-20mph of momentum, crank the wheel and pull on the emergency brake, slide around and try to "bat turn" out of it to complete the 360 degree move.

What I didn't know is that the backing plate on one of my rear brakes was apparently very loose, and it sheared the bolts holding it on. SO... what started out as a perfectly benign donut turned into a lurching, sliding stop, spewing all my brake fluid all over the ground (not to mention slamming the e-brake lever down with a whole lot of force, which is a "unique" feeling). Fortunately I was able to drive the Jeep back to their house about 1/2 mile away because the streets were covered in snow, because I could go into 4WD, and because it didn't freak me out (too much...) to drive "straight" with the steering cranked almost to the lock and the vehicle crabbing about 30 degrees all the way with that one rear wheel locked up solid.

That was one expensive donut!

Sometimes (not always) people get to survive the learning experience. I hope you realize that are not the only person to ever damage a vehicle when doing something silly just for fun.....

Matt (smiling and turning around)


Matt & Mary Colie - Chaumière -'73 Glacier 23 - Members GMCMI, GMCGL, GMCES
Electronically Controlled Quiet Engine Cooling Fan with OE Rear Drum Brakes with Applied Control Arms
SE Michigan - Near DTW - Twixt A2 and Detroit
Re: [GMCnet] MATH QUESTION / Aggressive Braking (revised Video) [message #197193 is a reply to message #197051] Fri, 01 February 2013 19:29 Go to previous message
hnielsen2 is currently offline  hnielsen2   United States
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All is well with my Lord
The best argument against democracy is a five minute conversation with the
average voter
(Winston Churchill)

----- Original Message -----
From: "Keith V" <my427v8@hotmail.com>
To: <gmclist@temp.gmcnet.org>
Sent: Friday, February 01, 2013 07:44
Subject: Re: [GMCnet] MATH QUESTION / Aggressive Braking (revised Video)


>
>
> well recognizing the problem as being brake torque and knowing about Full
> floating brakes and THEN building a working system is quite a feat.
>
> I've known about floating brakes for a while, Most circle track cars use
> them, and some other race cars.
>
> But Chuck got it to work on the GMC <thumbs up>

> Yes Chuck is the one who got it to work.

> Howard

> Keith
> 69 Vette
> 29 Dodge
> 75 Royale GMC
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