Remote Master Cylinder Resvior

T

Tom Katzenberger

Well-known member
Jun 26, 2019
795
287
63
Guys,

What are your thoughts on remote master cylinder reservoirs?

Thanks,
Tom K.
--
Tom & Oki Katzenberger,
Kingsville, Maryland,
1977 23' Birchaven, 455 C.I.D., Micro Level, Howell EBL-EFI Spark Control, Macerator, York Air Compressor, 6 Wheel Disc, Quadra Bag, Onan W/Bovee
Ignition
 
Just trying to increase capacity on the 2 stage MC.
--
Tom & Oki Katzenberger,
Kingsville, Maryland,
1977 23' Birchaven, 455 C.I.D., Micro Level, Howell EBL-EFI Spark Control, Macerator, York Air Compressor, 6 Wheel Disc, Quadra Bag, Onan W/Bovee
Ignition
 
If you are successful at sealing the M/C with the diaphragm gasket, (it's going to seep), remember you will need a similar gasket on your reservoir to
avoid a vacuum but still keep air out.
--
Terry Kelpien

ASE Master Technician

73 Glacier 260

Smithfield, Va.
 
Terry,

Yes, I agree. I was thinking more on the lines of machining fittings into the MC in lieu of the existing reservoirs. This way we would have remote
reservoir feed directly into the master cylinder.

Take care,
Tom K.
--
Tom & Oki Katzenberger,
Kingsville, Maryland,
1977 23' Birchaven, 455 C.I.D., Micro Level, Howell EBL-EFI Spark Control, Macerator, York Air Compressor, 6 Wheel Disc, Quadra Bag, Onan W/Bovee
Ignition
 
There are a number of OEM remote fill master cylinders out there. I had a
vehicle in the past that had a remote fill, if memory serves me correctly,
it was a Ford Bronco II.
Perhaps one of those might work without much fiddling around. Just an
idea I'm throwing out there.
Jim Hupy
Salem, Oregon

> Terry,
>
> Yes, I agree. I was thinking more on the lines of machining fittings into
> the MC in lieu of the existing reservoirs. This way we would have remote
> reservoir feed directly into the master cylinder.
>
> Take care,
> Tom K.
> --
> Tom & Oki Katzenberger,
> Kingsville, Maryland,
> 1977 23' Birchaven, 455 C.I.D., Micro Level, Howell EBL-EFI Spark Control,
> Macerator, York Air Compressor, 6 Wheel Disc, Quadra Bag, Onan W/Bovee
> Ignition
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
>
 
I don't get where you'd mount a remote reservoir usually they are mounted above the NC and we have no room
________________________________
From: James Hupy
Sent: Wednesday, February 2, 2022 12:54 PM
To: gmclist
Subject: [GMCnet] Re: Remote Master Cylinder Resvior

There are a number of OEM remote fill master cylinders out there. I had a
vehicle in the past that had a remote fill, if memory serves me correctly,
it was a Ford Bronco II.
Perhaps one of those might work without much fiddling around. Just an
idea I'm throwing out there.
Jim Hupy
Salem, Oregon

> Terry,
>
> Yes, I agree. I was thinking more on the lines of machining fittings into
> the MC in lieu of the existing reservoirs. This way we would have remote
> reservoir feed directly into the master cylinder.
>
> Take care,
> Tom K.
> --
> Tom & Oki Katzenberger,
> Kingsville, Maryland,
> 1977 23' Birchaven, 455 C.I.D., Micro Level, Howell EBL-EFI Spark Control,
> Macerator, York Air Compressor, 6 Wheel Disc, Quadra Bag, Onan W/Bovee
> Ignition
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
>
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
 
My suggestion was for those who were concerned with increased volume of
brake fluid. Locating the remote was not one of my considerations. I admit
that it might be problematic to find a location under the hatch that is
both higher than the one on the booster and still accessible for filling.
Jim Hupy
Salem, Oregon

> I don't get where you'd mount a remote reservoir usually they are mounted
> above the NC and we have no room
> ________________________________
> From: James Hupy
> Sent: Wednesday, February 2, 2022 12:54 PM
> To: gmclist
> Subject: [GMCnet] Re: Remote Master Cylinder Resvior
>
> There are a number of OEM remote fill master cylinders out there. I had a
> vehicle in the past that had a remote fill, if memory serves me correctly,
> it was a Ford Bronco II.
> Perhaps one of those might work without much fiddling around. Just an
> idea I'm throwing out there.
> Jim Hupy
> Salem, Oregon
>

>
> > Terry,
> >
> > Yes, I agree. I was thinking more on the lines of machining fittings into
> > the MC in lieu of the existing reservoirs. This way we would have remote
> > reservoir feed directly into the master cylinder.
> >
> > Take care,
> > Tom K.
> > --
> > Tom & Oki Katzenberger,
> > Kingsville, Maryland,
> > 1977 23' Birchaven, 455 C.I.D., Micro Level, Howell EBL-EFI Spark
> Control,
> > Macerator, York Air Compressor, 6 Wheel Disc, Quadra Bag, Onan W/Bovee
> > Ignition
> > _______________________________________________
> > GMCnet mailing list
> > Unsubscribe or Change List Options:
> >
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
>
 
Jim and Keith,

I was just throwing the thought out there and haven't gone beyond that. The original master cylinder fill height was fine. To get that level again may
be achievable. I have been concentrating on the interior wood work lately.

I took out the oven and am installing a Convection/ Microwave/Air fryer and am also in the process cutting out for a 7 Cu. Ft. 3 way Norcold.

Monday the coach goes away for 2 weeks so while I was getting the brakes ready for transport and to allow the paint shop to move the coach about. As I
was doing so, I was thinking about possibilities down the road, but haven't gone much beyond the thought.

I do agree with you both in regards to the elevation and more. I still have much to think about with regard to the brakes.

Take care,
Tom K.
--
Tom & Oki Katzenberger,
Kingsville, Maryland,
1977 23' Birchaven, 455 C.I.D., Micro Level, Howell EBL-EFI Spark Control, Macerator, York Air Compressor, 6 Wheel Disc, Quadra Bag, Onan W/Bovee
Ignition
 
The Bronco II has a remote reservoir for the clutch master cylinder. It holds about 3 tablespoons of fluid and then splooges half that out when you
put in the diaphragm. Very small system and just barely enough accommodation for wear of the clutch disk. And no extra throw or amplification in case
of an air bubble, as the system works the opposite way to increase leverage.
--
Terry Kelpien

ASE Master Technician

73 Glacier 260

Smithfield, Va.
 
Why are you considering a remote reservoir? Just check it often and kept full. JWIT
--
Larry
78 Royale w/500 Caddy
Menomonie, WI.
 
Even at the same elevation, but where the lid is more accessible is better; and see thru reservoir is even better yet.
--
Tom & Oki Katzenberger,
Kingsville, Maryland,
1977 23' Birchaven, 455 C.I.D., Micro Level, Howell EBL-EFI Spark Control, Macerator, York Air Compressor, 6 Wheel Disc, Quadra Bag, Onan W/Bovee
Ignition
 
Just thinking out loud to many of you other thinkers, if there was a master cylinder for 6 wheel disk brakes which would perform much better or as
desired, but would not fit due to too large a reservoir? If so, one could possibly reduce the reservoir height (if metal), make a semi permanent cover
and make the balance of the reservoir remote.

Simply, not re-engineer a Master Cylinder, just modify the reservoir or move it to fit.

Is there such a Master Cylinder which is best or better, but is just too high?

Thanks,
Tom K.
--
Tom & Oki Katzenberger,
Kingsville, Maryland,
1977 23' Birchaven, 455 C.I.D., Micro Level, Howell EBL-EFI Spark Control, Macerator, York Air Compressor, 6 Wheel Disc, Quadra Bag, Onan W/Bovee
Ignition
 
There are at least 3 different reservoirs available for the P-30. The
reservoirs bolt on to the actual master cylinder. They are not cast iron,
and perhaps could be modified to fit. The P-30 is not my favorite cylinder
for the brakes you describe. They do not develop as much line pressure as
the OEM does.
Jim Hupy
Salem, Oregon

>
> Just thinking out loud to many of you other thinkers, if there was a
> master cylinder for 6 wheel disk brakes which would perform much better or
> as
> desired, but would not fit due to too large a reservoir? If so, one could
> possibly reduce the reservoir height (if metal), make a semi permanent cover
> and make the balance of the reservoir remote.
>
> Simply, not re-engineer a Master Cylinder, just modify the reservoir or
> move it to fit.
>
> Is there such a Master Cylinder which is best or better, but is just too
> high?
>
> Thanks,
> Tom K.
> --
> Tom & Oki Katzenberger,
> Kingsville, Maryland,
> 1977 23' Birchaven, 455 C.I.D., Micro Level, Howell EBL-EFI Spark Control,
> Macerator, York Air Compressor, 6 Wheel Disc, Quadra Bag, Onan W/Bovee
> Ignition
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
>
 
> Guys,
>
> Just thinking out loud to many of you other thinkers, if there was a master cylinder for 6 wheel disk brakes which would perform much better or as
> desired, but would not fit due to too large a reservoir? If so, one could possibly reduce the reservoir height (if metal), make a semi permanent
> cover and make the balance of the reservoir remote.
>
> Simply, not re-engineer a Master Cylinder, just modify the reservoir or move it to fit.
>
> Is there such a Master Cylinder which is best or better, but is just too high?
>
> Thanks,
> Tom K.

We had these fitted and a picture of Bob Stone's 1332 project
http://www.gmcmhphotos.com/photos/g7378-40-mm-master-reservoirs.html

http://www.gmcmhphotos.com/photos/g7378-40-mm-master-reservoirs.html
--
Wally Anderson
Omaha NE
75 Glenbrook
Megasquirt EFI Onan & 455
Bosch Hydromax
Manny reaction arm system
Kelsey Hayes park brake
http://wallyandsue.blogspot.com/
 
Wally,

Thanks for the picture of Bob's 1332 project. He's told me about it so I
had an idea of what he's done, but hadn't actually seen it yet. When you
talk to him, ask if he considered a master-slave hydraulic linkage rather
than all that mechanical paraphernalia. I remember looking at an old Dodge
dump truck with a Hydroboost located on the frame below the cab. At the
firewall there was a simple single-piston master cylinder; that was plumbed
to a simple single-piston slave cylinder whose output drove the
Hydroboost. Simple and effective and VERY easy to design and build.
Should work well for us and never develop play like the mechanical linkage
will. I haven't looked for the master-slave hydraulics, but it should be
readily available.

Ken H.

> > Guys,
> >
> > Just thinking out loud to many of you other thinkers, if there was a
> master cylinder for 6 wheel disk brakes which would perform much better or
> as
> > desired, but would not fit due to too large a reservoir? If so, one
> could possibly reduce the reservoir height (if metal), make a semi permanent
> > cover and make the balance of the reservoir remote.
> >
> > Simply, not re-engineer a Master Cylinder, just modify the reservoir or
> move it to fit.
> >
> > Is there such a Master Cylinder which is best or better, but is just too
> high?
> >
> > Thanks,
> > Tom K.
>
> We had these fitted and a picture of Bob Stone's 1332 project
> http://www.gmcmhphotos.com/photos/g7378-40-mm-master-reservoirs.html
>
> http://www.gmcmhphotos.com/photos/g7378-40-mm-master-reservoirs.html
> --
> Wally Anderson
> Omaha NE
> 75 Glenbrook
> Megasquirt EFI Onan & 455
> Bosch Hydromax
> Manny reaction arm system
> Kelsey Hayes park brake
> http://wallyandsue.blogspot.com/
>
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
>
 
Wow Ken,

That is genius! A clutch master and slave housed in a steel cage/box in front of a 2 stage brake master cylinder. I can be remotely placed anywhere.
Do you boost before the clutch master or fab a mount for a brake booster and master cylinder?

Very good thought guys.

Take care,
Tom K.
--
Tom & Oki Katzenberger,
Kingsville, Maryland,
1977 23' Birchaven, 455 C.I.D., Micro Level, Howell EBL-EFI Spark Control, Macerator, York Air Compressor, 6 Wheel Disc, Quadra Bag, Onan W/Bovee
Ignition
 
I'd check out something like this for the Master/Slave system:
https://www.rockauto.com/en/catalog/jeep,2002,wrangler,4.0l+l6,1386873,transmission-manual,clutch+master+&+slave+cylinder+assembly,10290

The boost should definitely be at the slave end, IMHO. The clutch M/S
setup doesn't have to be as robust as a brake system, so I'd be leery of
asking it to take the full un-boosted stress.

JMHO,

Ken H.

> Wow Ken,
>
> That is genius! A clutch master and slave housed in a steel cage/box in
> front of a 2 stage brake master cylinder. I can be remotely placed anywhere.
> Do you boost before the clutch master or fab a mount for a brake booster
> and master cylinder?
>
> Very good thought guys.
>
> Take care,
> Tom K.
> --
> Tom & Oki Katzenberger,
> Kingsville, Maryland,
> 1977 23' Birchaven, 455 C.I.D., Micro Level, Howell EBL-EFI Spark Control,
> Macerator, York Air Compressor, 6 Wheel Disc, Quadra Bag, Onan W/Bovee
> Ignition
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
>
 
> Wally,
>
> Thanks for the picture of Bob's 1332 project. He's told me about it so I
> had an idea of what he's done, but hadn't actually seen it yet. When you
> talk to him, ask if he considered a master-slave hydraulic linkage rather
> than all that mechanical paraphernalia. I remember looking at an old Dodge
> dump truck with a Hydroboost located on the frame below the cab. At the
> firewall there was a simple single-piston master cylinder; that was plumbed
> to a simple single-piston slave cylinder whose output drove the
> Hydroboost. Simple and effective and VERY easy to design and build.
> Should work well for us and never develop play like the mechanical linkage
> will. I haven't looked for the master-slave hydraulics, but it should be
> readily available.
>
> Ken H.
>

>

> >> Guys,
> >>
> >> Just thinking out loud to many of you other thinkers, if there was a
> > master cylinder for 6 wheel disk brakes which would perform much better or
> > as
> >> desired, but would not fit due to too large a reservoir? If so, one
> > could possibly reduce the reservoir height (if metal), make a semi permanent
> >> cover and make the balance of the reservoir remote.
> >>
> >> Simply, not re-engineer a Master Cylinder, just modify the reservoir or
> > move it to fit.
> >>
> >> Is there such a Master Cylinder which is best or better, but is just too
> > high?
> >>
> >> Thanks,
> >> Tom K.
> >
> > We had these fitted and a picture of Bob Stone's 1332 project
> > http://www.gmcmhphotos.com/photos/g7378-40-mm-master-reservoirs.html
> >
> > http://www.gmcmhphotos.com/photos/g7378-40-mm-master-reservoirs.html
> > --
> > Wally Anderson
> > Omaha NE
> > 75 Glenbrook
> > Megasquirt EFI Onan & 455
> > Bosch Hydromax
> > Manny reaction arm system
> > Kelsey Hayes park brake
> > http://wallyandsue.blogspot.com/
> >
> >
> > _______________________________________________
> > GMCnet mailing list
> > Unsubscribe or Change List Options:
> >
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:

Stone did consider a remote hydraulic actuated system and there are several available from others already. Hal StClair is looking at it too for his
FMC, yes thats FMC not GMC.
https://www.tdsideas.com/store/p1/Remote_Hydroboost_Mounting_Kit.html
https://bustedknuckleoffroad.com/products/remote-mount-hydroboost-brake-kit
https://www.vancopbs.com/product_p/urs.htm
--
Wally Anderson
Omaha NE
75 Glenbrook
Megasquirt EFI Onan & 455
Bosch Hydromax
Manny reaction arm system
Kelsey Hayes park brake
http://wallyandsue.blogspot.com/
 
> Stone did consider a remote hydraulic actuated system and there are several available from others already. Hal StClair is looking at it too for
> his FMC, yes thats FMC not GMC. Stone has a couple 1332's out there.

Maybe Hal is putting the GMC on top of the FMC chassis for his GMC diesel pusher.... Need an update from that guy.
--
Bill Van Vlack
'76 Royale; Guemes Island, Washington; Twin bed, full (DS) side bath, Brazilian Redwood counter and settee tops,455, 6KW generator; new owner a/o mid
November 2015.
 
Guys,
The enlarged fluid reservoir does absolutely nothing the to increase the
brake pressure to your brakes weather they be drums or disk. Only the
liquid volume of the Piston(s) of the master cylinder that can fulfil the
necessary volume requirements of your brakes will increase the brake
stopping power at each wheel. If you do not have enough liquid volume from
your master cylinder to satisfy the volume requirement for each brake at
each wheel then your brakes are probably not anywhere what you need with
out the pedal going almost to the floor.

J.R. Wright
GMC GreatLaker
GMCGL Tech Editor
GMC Eastern States
GMCMHI
TZE Zone Restorations
78 Buskirk Custom 29.5' Stretch
75 Avion (Undergoing Frame up Restoration)

On Thu, Feb 10, 2022 at 12:43 PM Bill Van Vlack
wrote:

> > Stone did consider a remote hydraulic actuated system and there are
> several available from others already. Hal StClair is looking at it too for
> > his FMC, yes thats FMC not GMC. Stone has a couple 1332's out there.
>
> Maybe Hal is putting the GMC on top of the FMC chassis for his GMC diesel
> pusher.... Need an update from that guy.
> --
> Bill Van Vlack
> '76 Royale; Guemes Island, Washington; Twin bed, full (DS) side bath,
> Brazilian Redwood counter and settee tops,455, 6KW generator; new owner a/o
> mid
> November 2015.
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
>
 
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