Home » Public Forums » GMCnet » Check Out This Bad Boy
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| Re: [GMCnet] Check Out This Bad Boy [message #164483 is a reply to message #164480] |
Wed, 28 March 2012 15:41   |
Dave Skowron
Messages: 46
Registered: March 2012
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I would think you'd need enough hydraulic pressure to effectively stop
the larger rotor, so you'd need an appropriate amount of fluid to
provide it. It might e that the stock master cylinder is adequate.
Of course, I'm probably as wrong as can be, like usual.
Dave Skowron
On 3/28/2012 1:18 PM, Larry Davick wrote:
> Dan,
>
> Who offers that front brake? Do you know if a stock master cylinder will supply enough juice for the thing?
>
> Come to think of it, I wonder if that's a dumb question. You only ever need enough brake fluid to squish the pads on the rotor, so my guess is that the master cylinder doesn't need any modification.
>
> Open for discussion!
>
>
>
> Larry Davick
> ljdavick@comcast.net
> ----- Original Message -----
> From: "Dan Gregg"<gregg_dan@hotmail.com>
> To: gmclist@temp.gmcnet.org
> Sent: Wednesday, March 28, 2012 12:26:11 PM
> Subject: [GMCnet] Check Out This Bad Boy
>
>
>
> http://www.gmcmhphotos.com/photos/showphoto.php?photo=43537&title=some-serious-front-bra&cat=6045
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| Re: [GMCnet] Check Out This Bad Boy [message #164488 is a reply to message #164480] |
Wed, 28 March 2012 16:08 |
Dave Mumert
Messages: 272
Registered: February 2004
Location: Olds, AB, Canada
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HI All
Actually, dual 51mm (2 inch) bores do not equate to 102mm.
Dual 51 mm bore = 6.28 Square inches
Single 102 mm bore = 12.56 square inches
Single 80 mm bore = 7.76 square inches.
One of the factors in disk brake torque is the effective radius, that is the
distance from the center of the axle to the center of the brake piston.
Multiple small pistons have an advantage because they can be mounted farther
from the axle and not extend past the edge of the rotor, so their effective
radius can be greater than a single large piston.
If the dual 51 mm caliper provides the same brake torque as the 80 mm it
would be a better choice because of the reduced fluid requirements.
Dave Mumert
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| Re: [GMCnet] Check Out This Bad Boy [message #164518 is a reply to message #164480] |
Wed, 28 March 2012 22:00 |
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USAussie
Messages: 15912
Registered: July 2007
Location: Sydney, Australia
Karma: 6
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Larry,
This afternoon we had an open discussion of front ends for the GMC.
The picture Dan posted is Jim Rountree's Chevy truck hub, brake disk, and
caliper. He installed a complete front end out of a Chevy truck (knuckles,
control arms, torsion bars, and brakes) in his GMC.
Regards,
Rob M.
-----Original Message-----
From: Larry Davick
Dan,
Who offers that front brake? Do you know if a stock master cylinder will
supply enough juice for the thing?
Come to think of it, I wonder if that's a dumb question. You only ever need
enough brake fluid to squish the pads on the rotor, so my guess is that the
master cylinder doesn't need any modification.
Open for discussion!
Larry Davick
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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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| Re: [GMCnet] Check Out This Bad Boy [message #164613 is a reply to message #164518] |
Thu, 29 March 2012 16:12 |
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ljdavick
Messages: 3548
Registered: March 2007
Location: Fremont, CA
Karma: -3
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| Robert Mueller wrote on Wed, 28 March 2012 20:00 |
Larry,
This afternoon we had an open discussion of front ends for the GMC.
The picture Dan posted is Jim Rountree's Chevy truck hub, brake disk, and caliper. He installed a complete front end out of a Chevy truck (knuckles, control arms, torsion bars, and brakes) in his GMC.
Regards,
Rob M.
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Rob - What great fun! I'm envious of every one of you at the convention. I hope that Jim Rountree posts something to discuss what he's done. Do you have any thoughts as to the benefits of his installation?
If it's good maybe he'll packages it as a product.
Larry Davick
A Mystery Machine
1976(ish) Palm Beach
Fremont, Ca
Howell EFI + EBL + Electronic Dizzy
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| Re: [GMCnet] Check Out This Bad Boy [message #165368 is a reply to message #164485] |
Wed, 04 April 2012 18:08 |
Larry C
Messages: 1168
Registered: July 2004
Location: NE Illinois by the Illino...
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Pardon my question if it's dumb....
I thought the reaction brake for the rear wheels had been decided as the fix for the braking problem that GMC's have.
Or, perhaps I am not looking at the bigger picture...
Is this front brake including a better wheel bearing to replace the well worked OEM GMC wheel bearing...
Nice pic but whats the story.
thoughts
Gatsbys' CRUISER  08-18-04
74 GLACIER X, 260/455-APC-4 Bagg'r
Remflex Manifold gaskets
CampGrounds needed, Add yours to "PLACES" />
http://www.gmceast.com/travel
_
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| Re: [GMCnet] Check Out This Bad Boy [message #165379 is a reply to message #165368] |
Wed, 04 April 2012 20:23 |
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ljdavick
Messages: 3548
Registered: March 2007
Location: Fremont, CA
Karma: -3
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Just a proud GMC owner showing off what he did. Remarkable, really. He took the front off of a 2002 Chevy truck and welded it to the front frame of his GMC. Now he has a modern front end with massive brakes.
It's much too much work for most shade-tree types, like me. I certainly do admire his work, though.
Larry Davick
Fremont, California
The Mystery Machine
'76 (ish) Palm Beach
----- Original Message -----
From: "Larry C" <slawrence111@yahoo.com>
To: gmclist@temp.gmcnet.org
Sent: Wednesday, April 4, 2012 4:08:31 PM
Subject: Re: [GMCnet] Check Out This Bad Boy
Pardon my question if it's dumb....
I thought the reaction brake for the rear wheels had been decided as the fix for the braking problem that GMC's have.
Or, perhaps I am not looking at the bigger picture...
Is this front brake including a better wheel bearing to replace the well worked OEM GMC wheel bearing...
Nice pic but whats the story.
thoughts
--
Gatsbys' CRUISER :d 08-18-04
74 GLACIER X, 260/455-APC-4 Bagg'r
Remflex Manifold gaskets
CampGrounds needed, Add yours to "PLACES" />
http://www.gmceast.com/travel
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Larry Davick
A Mystery Machine
1976(ish) Palm Beach
Fremont, Ca
Howell EFI + EBL + Electronic Dizzy
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| Re: [GMCnet] Check Out This Bad Boy [message #165380 is a reply to message #165368] |
Wed, 04 April 2012 20:29 |
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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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Larry,
That is a picture of the front suspension out of a 2002 Chevy 1 ton truck
installed by Jim Rountree of San Antonio, Texas.
He gave an impromptu presentation at Shawnee.
You are correct, four rear disks with the reaction arm system is the best
you can get for REAR brakes.
I can't remember the percentages but I know most of a vehicles braking comes
from the front wheels, so the bigger the disk, the larger the caliper the
better.
Yes this hub has the large bearing.
The problem is you have to be highly skilled to locate the pivot points for
the upper and lower control arms correctly!
Regards,
Rob M.
-----Original Message-----
From: gmclist-bounces@temp.gmcnet.org
[mailto:gmclist-bounces@temp.gmcnet.org] On Behalf Of Larry C
Sent: Wednesday, April 04, 2012 6:09 PM
To: gmclist@temp.gmcnet.org
Subject: Re: [GMCnet] Check Out This Bad Boy
Pardon my question if it's dumb....
I thought the reaction brake for the rear wheels had been decided as the fix
for the braking problem that GMC's have.
Or, perhaps I am not looking at the bigger picture...
Is this front brake including a better wheel bearing to replace the well
worked OEM GMC wheel bearing...
Nice pic but whats the story.
thoughts
--
Gatsbys' CRUISER :d 08-18-04
74 GLACIER X, 260/455-APC-4 Bagg'r
Remflex Manifold gaskets
CampGrounds needed, Add yours to "PLACES" />
http://www.gmceast.com/travel
_
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GMCnet mailing list
Unsubscribe or Change List Options:
http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
_______________________________________________
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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