Brakes

cbwood

New member
Sep 29, 1999
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All this discussion on brakes is good, it will help us decide to 'mix & match'? or whatever.
My question is..
Is there a solution so that if I wanted to and pressed 'Moderately hard' or better on the brakes, can I lock them suckers up!!..

CBWood
77 Kingsley
MWC OK

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All this discussion on brakes is good. Will help us to decide on 'mix and match' or whatever..
What I want to know is..
what configuration is there so that when I press 'moderately hard' or better, i can lock them suckers up!!!..

CBWood
77 Kingsley
MWC OK

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CB and Arch,

I have personally "locked them suckers up" in Leigh Harrison's coach.
The way that thing stops is clearly in violation of several laws of
physics!

Best wishes,
Roy Cummings
'75 Eleganza
Arlington, VA
 
>My guess is that discs all 'round would allow one to wear a signigicant flat
>spot on all 6 tires if it came down to a panic stop situation.
>Oh no! Now we need to think about an ABS system for these suckers. :-(

I looked into it. Talked to aftermarket guys, looked for off the shelf
components. Here's the problem: ABS for cars and light trucks controls four
wheels. ABS for medium duty and heavy trucks can control more. BUT, you
need to change many components in order to get the sensor inputs right.
Best guess at entry cost using the parts that I could find is >$5,000 per
GMC - and it may not work since the axles need to be modified with a 100
tooth gear for the sensor.

There may be other hardware available, but it looks pretty unlikely. BTW,
developing a custom ABS system wouldn't be too bad but we (the developers
and sellers) couldn't afford the liability insurance.

Henry

Henry Davis Consulting, Inc / new product consulting
PO Box 1270 / product readiness reviews
Soquel, Ca 95073 / IP reviews
ph: (831) 462-5199 / full service marketing
fax: (831) 462-5198
http://www.henry-davis.com/ http://www.henry-davis.com
 
My guess is that discs all 'round would allow one to wear a signigicant flat
spot on all 6 tires if it came down to a panic stop situation.
Oh no! Now we need to think about an ABS system for these suckers. :-(
Dick '75 PB in Atlanta

>All this discussion on brakes is good, it will help us decide to 'mix &
match'? or whatever.
>My question is..
>Is there a solution so that if I wanted to and pressed 'Moderately hard' or
better on the brakes, can I lock them suckers up!!..
>
>
>CBWood
>77 Kingsley
>MWC OK
>
>-------------------------------------------------------------
>Get free personalized email at http://www.switchboardmail.com
>
 
>Henry, My ABS crack was tongue in cheek.

Sometimes I go a little overboard according t my wife. SHe's right. But my
original motivation for looking at ABS was only partially the stopping
issue. The rest was as a way of improving front end traction sing an ABS
system. Some of the truck aftermarket parts that I looked at would allow this.

Henry

Henry Davis Consulting, Inc / new product consulting
PO Box 1270 / product readiness reviews
Soquel, Ca 95073 / IP reviews
ph: (831) 462-5199 / full service marketing
fax: (831) 462-5198
http://www.henry-davis.com/ http://www.henry-davis.com
 
Henry, My ABS crack was tongue in cheek. Thanks for the info anyway.
My wife gets all crazy when the Lincoln shakes during an ABS controlled
panic stop. I'd probably have to revive her if this 6 ton beast did that.
Dick 75 PB in Atlanta

>>My guess is that discs all 'round would allow one to wear a signigicant flat
>>spot on all 6 tires if it came down to a panic stop situation.
>>Oh no! Now we need to think about an ABS system for these suckers. :-(
>
>I looked into it. Talked to aftermarket guys, looked for off the shelf
>components. Here's the problem: ABS for cars and light trucks controls four
>wheels. ABS for medium duty and heavy trucks can control more. BUT, you
>need to change many components in order to get the sensor inputs right.
>Best guess at entry cost using the parts that I could find is >$5,000 per
>GMC - and it may not work since the axles need to be modified with a 100
>tooth gear for the sensor.
>
>There may be other hardware available, but it looks pretty unlikely. BTW,
>developing a custom ABS system wouldn't be too bad but we (the developers
>and sellers) couldn't afford the liability insurance.
>
>Henry
>
>Henry Davis Consulting, Inc / new product consulting
>PO Box 1270 / product readiness reviews
>Soquel, Ca 95073 / IP reviews
>ph: (831) 462-5199 / full service marketing
>fax: (831) 462-5198
>http://www.henry-davis.com/ http://www.henry-davis.com
>
>
 
>I have personally "locked them suckers up" in Leigh Harrison's coach.
>Roy Cummings

What I'm looking for (and probably others are) is a COMPLETE list of 'stuff' I can obtain to get the same results.
1. Still have parking brake.
2. Dont have to 'adapt' to much, (ie drill lots of holes,etc).
The latest postings have much of the stuff, but I'm still concerned about the backing plate, and redrilling the rotors?? I dont see any problem of grinding off the protuberence? on the calipers.

This way I can start assembling the parts and hopefully next spring (or this winter) I can jack it up and put all this stuff on in my driveway(workarea)..

When you drive in Dallas, you dont want to drive ahead because there is no 'ahead' there!!

Gene, could you post this list on ur site as it matures??

Thankx

CBWood
77 Kingsley
MWC OK

- -------------------------------------------------------------
Get free personalized email at http://www.switchboardmail.com
 
would be glad to when we get the final / complete list
gene

>>I have personally "locked them suckers up" in Leigh Harrison's coach.
>>Roy Cummings
>
>What I'm looking for (and probably others are) is a COMPLETE list of
'stuff' I can obtain to get the same results.
>1. Still have parking brake.
>2. Dont have to 'adapt' to much, (ie drill lots of holes,etc).
>The latest postings have much of the stuff, but I'm still concerned about
the backing plate, and redrilling the rotors?? I dont see any problem of
grinding off the protuberence? on the calipers.
>
>This way I can start assembling the parts and hopefully next spring (or
this winter) I can jack it up and put all this stuff on in my
driveway(workarea)..
>
>When you drive in Dallas, you dont want to drive ahead because there is no
'ahead' there!!
>
>Gene, could you post this list on ur site as it matures??
>
>Thankx
>
>
>
>CBWood
>77 Kingsley
>MWC OK
>
>-------------------------------------------------------------
>Get free personalized email at http://www.switchboardmail.com
>
Genef -- 77PB/ore/ca
GMC MOTORHOME INFORMATION
http://www.california.com/~eagle/
 
>>>>>>>>>

Date: Thu, 14 Oct 1999 16:51:58 -0400 (EDT)
From: cbwood
Subject: GMC: Brakes

All this discussion on brakes is good, it will help us decide to 'mix &
match'? or whatever.
My question is..
Is there a solution so that if I wanted to and pressed 'Moderately hard' or
better on the brakes, can I lock them suckers up!!..

CBWood
77 Kingsley
MWC OK
>>>>>>>>>>>>>>>>>>

Behind the times w/the digest and a great 5 day autumn leaf peeping trip in
northern Michigan here..., but as to your question re locking up....

On our 23 fter, it's real easy to "lock 'em up" with the stock setup
(AFAIK). Just stand on it with both feet. No problemo.

As always, best regards.

~ Ritch & Betty Hwang ~ Clarkston, MI ~ mailto:rhwang
Visit our home page ~ http://www.concentric.net/~rhwang/
~ =^..^= Trinket ~ the shy Persian kitty ~
~ 76 GMC Birchaven ~ FMCA F249339 ~ RVClub 00930 ~ ICQ# 6408591~
(B}>
 
A powermaster unit will lock them up using your finger to push the brake pedal.

>>>>>>>>>>
>
>Date: Thu, 14 Oct 1999 16:51:58 -0400 (EDT)
>From: cbwood
>Subject: GMC: Brakes
>
>All this discussion on brakes is good, it will help us decide to 'mix &
>match'? or whatever.
>My question is..
>Is there a solution so that if I wanted to and pressed 'Moderately hard' or
>better on the brakes, can I lock them suckers up!!..
>
>
>CBWood
>77 Kingsley
>MWC OK
>>>>>>>>>>>>>>>>>>>
>
>Behind the times w/the digest and a great 5 day autumn leaf peeping trip in
>northern Michigan here..., but as to your question re locking up....
>
> On our 23 fter, it's real easy to "lock 'em up" with the stock setup
>(AFAIK). Just stand on it with both feet. No problemo.
>
>
>As always, best regards.
>
>~ Ritch & Betty Hwang ~ Clarkston, MI ~ mailto:rhwang
>Visit our home page ~ http://www.concentric.net/~rhwang/
>~ =^..^= Trinket ~ the shy Persian kitty ~
>~ 76 GMC Birchaven ~ FMCA F249339 ~ RVClub 00930 ~ ICQ# 6408591~
>(B}>
>
>
 
>

Bob, Emery,
I've been following various threads about brakes & would have had more
than a passing concern if there were any problems with the ones in my
coach. There isn't, but in checking them out, I can't figure out where
the setup I have comes from. I knew it wasn't stock but since the sons
of the guy who owned the coach said Dad spent some money re-doing the
brakes & they work good I wasn't too concerned. What I have may be an
alternative to the extra plumbing & assorted other stuff that goes with
a larger M/cylinder, sensitized booster etc.. I believe they're
electric. There is no booster. I have a large modern master cylinder
that has a hydraulic line going from it to an electric motor directly
under it. The motor is operated off of a pressure switch on the m/cyl.
There is a 3" black ball??/pressure cylinder off to the side of this
setup and no booster or vacuum hookup in sight. I tried the brakes
without the engine running & the key in the on position & there's no
difference than when the engine is running. Sort of a neat setup
although I haven't the faintest idea where it comes from. Any ideas?
(This is not my forte'.)
Steve Ferguson
San Diego
 
[Admin note - "Bounced", non-member submission. Patrick]

If it was a powermaster system it would not have a brake booster

>In a message dated 10/25/99 9:13:41 PM Central Daylight Time,

>
>> I tried the brakes
>> without the engine running & the key in the on position & there's no
>> difference than when the engine is running. Sort of a neat setup
>> although I haven't the faintest idea where it comes from. Any ideas?
>
>Steve
>
>Sounds like you have a power master system. Electric pump drives the whole
>system. Check out http://www.gnttype.org/techarea/brakes/PwrMstr.html
>Might help.
>
>Take Care
>Arch
>
>
 
[Admin note - "Bounced", non-member submission. Gene, you need to fix
your "From" address again. You're showing a prodigy email address
again. Thanks, Patrick]

If you have a powermaster, you might want to read the stuff I have on it
on my web page
gene

>
>"soft
>touch system by Bob Lame". Any experience or opinions on this braking
>system. >>
>
> Bob, Emery,
> I've been following various threads about brakes & would have had more
>than a passing concern if there were any problems with the ones in my
>coach. There isn't, but in checking them out, I can't figure out where
>the setup I have comes from. I knew it wasn't stock but since the sons
>of the guy who owned the coach said Dad spent some money re-doing the
>brakes & they work good I wasn't too concerned. What I have may be an
>alternative to the extra plumbing & assorted other stuff that goes with
>a larger M/cylinder, sensitized booster etc.. I believe they're
>electric. There is no booster. I have a large modern master cylinder
>that has a hydraulic line going from it to an electric motor directly
>under it. The motor is operated off of a pressure switch on the m/cyl.
>There is a 3" black ball??/pressure cylinder off to the side of this
>setup and no booster or vacuum hookup in sight. I tried the brakes
>without the engine running & the key in the on position & there's no
>difference than when the engine is running. Sort of a neat setup
>although I haven't the faintest idea where it comes from. Any ideas?
>(This is not my forte'.)
>Steve Ferguson
>San Diego
>
>
gene fisher 76 PB/OR/CA
GMC MOTORHOME INFORMATION
mr.era
http://www.california.com/~eagle/
 
Sounds like you have a power master system.

Arch,
Yep! That sure sounds like it. Very compact unit. I'll take a couple
of digital photos & send them to Patrick or Gene to see if they want ot
post them.
TC,
Steve Ferguson
San Diego