Home » Public Forums » GMCnet » Disc Brake/Reaction Arm First Impressions
Disc Brake/Reaction Arm First Impressions [message #140081] |
Fri, 19 August 2011 18:51  |
Carl S.
 Messages: 4186 Registered: January 2009 Location: Tucson, AZ.
Karma: 13
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I got the wheels back on and the lug nuts torqued last night, and drove the coach, for the first time with the new brakes, this morning. I drove it down to my office and home again, maybe 10 -12 miles total. I made a pit stop at my mechanic friend Ron"s garage and showed him what I have been doing for the last three weeks. I'm not sure I have all the air out of the lines. I have been told that the pedal will seem softer and lower than it did before, and it does. Ron tested it and said he thought it had a pedal feel that he would consider "normal".
It stops really well when I step on the brake. Of course, I took it easy on the new pads, as recommended, to get them bedded in properly. but the difference in braking was obvious. The mid wheels were pretty hot, compared to the rear wheels, when I got home. I attribute this to the abrasive coating on the Yellow Sticky Pads. The Raybestos pads on the rear do not have this (at least not as much) and I re-used the yellow pads that I had installed on the front a couple of years ago.
I also did not install a sensitized brake booster and kept my old one (you have to draw the line somewhere don't you?). I can see where it would be desirable to have in order to have more "car-like" brakes. I will put that in my future budget plans and upgrade it when my wife gets over the shock of the expense of this system.
Overall my first impression is good and I'm sure the system will grow on me as I get the rest of the air out of the lines (I'm pretty sure I'm 98% of the way there), and as the pads wear in.
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
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Re: Disc Brake/Reaction Arm First Impressions [message #140092 is a reply to message #140088] |
Fri, 19 August 2011 19:37   |
Carl S.
 Messages: 4186 Registered: January 2009 Location: Tucson, AZ.
Karma: 13
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I'm sure you're right, Dan.
I already like the serviceability aspect a whole lot more than the old system, and it definitely stops quicker. Even though I was 'taking it easy', I could tell that. The coach sure runs like a "26 foot, 12,000 pound hot rod with plumbing" without that Tracker attached to the back!
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
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Re: Disc Brake/Reaction Arm First Impressions [message #140098 is a reply to message #140095] |
Fri, 19 August 2011 19:52   |
Carl S.
 Messages: 4186 Registered: January 2009 Location: Tucson, AZ.
Karma: 13
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Yeah, I've got to figure out some 'tie downs' for the stuff that usually rides on the galley counter. Speaking of which, that may be my next project. That or the new fridge.
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
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Re: Disc Brake/Reaction Arm First Impressions [message #140113 is a reply to message #140102] |
Fri, 19 August 2011 20:43   |
Carl S.
 Messages: 4186 Registered: January 2009 Location: Tucson, AZ.
Karma: 13
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Armand, The new fridge is on order and should be delivered any day now. I just have to figure which of the next FOUR projects I want to get into next.
Good idea on the drawer. I will probably have to put some kind of door there or something. No use having awesome brakes if you have to be afraid to use them. Although, if you are scared to use the brakes, and run into someone, the stuff is going to fly anyway.
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
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Re: Disc Brake/Reaction Arm First Impressions [message #140365 is a reply to message #140115] |
Sun, 21 August 2011 22:53   |
Carl S.
 Messages: 4186 Registered: January 2009 Location: Tucson, AZ.
Karma: 13
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I just added a couple of pics to the album. One of the P-30 master cylinder, and a couple of the finished product (big deal, you can't see anything I did with the wheels back on). My wife and I pedal bled the system one more time on Saturday. Got nothing out of any of the bleeder screws but clean, clear fluid. I hope that's it. I'll report back as I get some more seat time on the coach.
http://www.gmcmhphotos.com/photos/showphoto.php?photo=40258
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
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Re: [GMCnet] Disc Brake/Reaction Arm First Impressions [message #140378 is a reply to message #140365] |
Mon, 22 August 2011 00:21   |
jimk
 Messages: 6734 Registered: July 2006 Location: Belmont, CA
Karma: 9
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Our brake specialist feels strongly that you need to lube the pin
where the O ring is embedded . If it binds, the pads can hangup
slightly.There is a special lube for this.
Our promotion on the Reaction Arm System is not going as well as I like.
Need several more to step up to save 500-600 total.
On Sun, Aug 21, 2011 at 8:53 PM, Carl Stouffer <carljr3b@yahoo.com> wrote:
>
>
> I just added a couple of pics to the album. One of the P-30 master cylinder, and a couple of the finished product (big deal, you can't see anything I did with the wheels back on). My wife and I pedal bled the system one more time on Saturday. Got nothing out of any of the bleeder screws but clean, clear fluid. I hope that's it. I'll report back as I get some more seat time on the coach.
>
> http://www.gmcmhphotos.com/photos/showphoto.php?photo=40258
> --
> Carl S.
> '75 ex Palm Beach
> Tucson, AZ.
> _______________________________________________
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Jim Kanomata
Applied/GMC, Fremont,CA
jimk@appliedairfilters.com
http://www.appliedgmc.com
1-800-752-7502
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Jim Kanomata
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jimk@appliedairfilters.com
www.appliedgmc.com
1-800-752-7502
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Re: [GMCnet] Disc Brake/Reaction Arm First Impressions [message #140422 is a reply to message #140378] |
Mon, 22 August 2011 09:39   |
Carl S.
 Messages: 4186 Registered: January 2009 Location: Tucson, AZ.
Karma: 13
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Senior Member |

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Jim,
I lubed all the O-rings on the caliper mounts. I removed the bushings on the bolt head side and hit those also. I used silicone drake grease. Got in there with a Q-tip and swabbed some in there pretty thoroughly. All should be good.
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
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Re: [GMCnet] Disc Brake/Reaction Arm First Impressions [message #140444 is a reply to message #140441] |
Mon, 22 August 2011 11:31   |
k2gkk
 Messages: 4452 Registered: November 2009
Karma: -8
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Based upon what I've read here, I'd love to have the system.
However, limited available funds will need to be used just
to simply make the coach basicallly viable!
~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
~~ ~ D C "Mac" Macdonald ~ ~~
~ ~ Amateur Radio - K2GKK ~ ~
~ ~ USAF and FAA, Retired ~ ~
~ ~ ~ Oklahoma City, OK ~ ~ ~
~~ ~ ~ "The Money Pit" ~ ~ ~~
~~ ~ ~ (TZE166V101966) ~ ~ ~~
~ ~ ~ ex-Palm Beach, 76 ~ ~ ~
~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
~ www.gmcmhphotos.com/okclb ~
> To: gmclist@temp.gmcnet.org
> From: gregg_dan@hotmail.com
> Date: Mon, 22 Aug 2011 11:25:54 -0500
> Subject: Re: [GMCnet] Disc Brake/Reaction Arm First Impressions
>
>
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> Jim, we need to know the minimum number and what the final cost will be. The way it is now seems a little questionable. Carl and Armand are on here talking about the brakes now. Of course everyone is tired of me bragging on mine, and I don't blame them. Ken is ready for his.
> Maybe we need a clean thread on here for this information. Its time to get serious.
> Dan,
> @ Elkhart County Fairgrounds
> --
> Dan & Teri Gregg
> Soft White LED Lighting
>
> http://danandteri.blogspot.com/
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Re: [GMCnet] Disc Brake/Reaction Arm First Impressions [message #140584 is a reply to message #140446] |
Tue, 23 August 2011 00:18   |
jimk
 Messages: 6734 Registered: July 2006 Location: Belmont, CA
Karma: 9
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The main variable is in the disc system. Some want the sensitized
system, non plunger parking brake or the improved parking brake.
The Reaction arm system is straight forward so It should be $1,995.00.
Dis system basic can be $1,250.00
On Mon, Aug 22, 2011 at 9:52 AM, Dan Gregg <gregg_dan@hotmail.com> wrote:
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> Sure Mac. This system is for coaches that are road ready and being used a lot. I would not spend the money until I was ready to start rolling. We do 6-10,000 miles each year so I am very thankful to now have brakes that work and I can depend on. Was no fun at all driving through El Paso 2 years in a row with only front brakes. Teri and I can maintain this system easily where as I had lots of problems keeping the drum brakes up to par.
> We just left the paint shop with some pictures of 3 GMCs there. We are having our roof re cleared after Goshen. A body shop in Carbondale, Il. did our GMC paint, good job, but the clear is coming off the roof after 5 years so Larry is going to fix it for us after the convention. Just the cost of maintaining a GMC in rolling condition.
> Priorities are reliablity and safety. Looks is last.
> Dan
> --
> Dan & Teri Gregg
> Soft White LED Lighting
>
> http://danandteri.blogspot.com/
>
>
>
>
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Jim Kanomata
Applied/GMC, Fremont,CA
jimk@appliedairfilters.com
http://www.appliedgmc.com
1-800-752-7502
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Jim Kanomata
Applied/GMC
jimk@appliedairfilters.com
www.appliedgmc.com
1-800-752-7502
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Re: [GMCnet] Disc Brake/Reaction Arm First Impressions [message #140672 is a reply to message #140584] |
Tue, 23 August 2011 17:21  |
 |
WD0AFQ
 Messages: 7111 Registered: November 2004 Location: Dexter, Mo.
Karma: 207
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jimk wrote on Tue, 23 August 2011 00:18 | The main variable is in the disc system. Some want the sensitized
system, non plunger parking brake or the improved parking brake.
The Reaction arm system is straight forward so It should be $1,995.00.
Dis system basic can be $1,250.00
--
Jim Kanomata
Applied/GMC, Fremont,CA
jimk@appliedairfilters.com
http://www.appliedgmc.com
1-800-752-7502
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Dang, that is a stink'in bargain. At that price it might raise the value of a coach by that much.
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
[Updated on: Tue, 23 August 2011 17:22] Report message to a moderator
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