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Many will already know what is written below so apologies to those, it may =
be helpful for those who haven't come across a brake shuttle valve before. =
=C2=A0This is a brake shuttle valve and CosmicMag1380 has posted an excelle=
nt link to show what it is. =C2=A0Do not confuse it with numbers 51 and 46 =
which are the brake light switch and holder. =C2=A0I do not believe it was =
fitted to all drum brake motors. =C2=A0It has one=C2=A0in port from the m/c=
ylinder and 3 out ports, one to rear brakes, one each to the front brakes o=
n either side and a warning light switch fitting at the front. =C2=A0Inside=
this device is a sliding shuttle, in everyday use it is held in the middle=
with 'O' rings. =C2=A0It's function is to leave you with some braking in t=
he event a brake line fails by sliding the shuttle sideways across to block=
off the failed brake line. =C2=A0In the event of a poorly adjusted or main=
tained braking system you may well have to pump your brakes to get a pedal =
but at least you will have something as opposed to nothing. =C2=A0You can t=
rigger them when bleeding brakes if you are being particularly hard on the =
brake pedal as the shuttle will slide across the to side with air in the sy=
stem and you have to pull it to pieces to reset it. =C2=A0It is frequently =
a neglected part of the braking system with seal replacement ignored when s=
ervicing. =C2=A0It can freeze in the working position and become redundant =
in the event of a brake line failure.Getting hold of a new one of these dev=
ices is difficult. =C2=A0Whilst shown on many part suppliers pages it may w=
ell not be a feature in their stock trays.You can live without one and just=
use a brake pipe union to send the fluid to each of the the fronts and rea=
r and many who don't care about a brake failure do just that. =C2=A0However=
, it is and can be a safety device that is effective when working properly =
on this era of vehicle. =C2=A0Having suffered brake failures in vehicles wi=
th and without these devices, I would rather go and a have a working one fi=
tted.
Guy R Day
=20
On Monday, 28 March 2016, 7:24, CosmicMag1380 via Spridgets <spridgets@=
autox.team.net> wrote:
=20
I may be wrong on the nomenclature but if you look at #48 on the Moss diag=
ram, that is what I am talking about.=20
http://www.mossmotors.com/Shop/ViewProducts.aspx?PlateIndexID=3D29302
The earlier cars with disk brakes had a single M/C and no shuttle valve in =
the proportioning valve. Depending on what Jim F. has to work with, he may =
need to know that there is a difference between the early and late disk bra=
ke systems.
In a sense the name proportional valve appears to be correct as the influx =
of hydraulic pressure enters the union and is distributed equally among the=
four lines running to the four corners of the car.
My 2c...
On Sun, Mar 27, 2016 at 5:29 AM, Rick Fisk <refisk@chartermi.net> wrote:
But it isn't a proportioning valve.=C2=A0 It's simply a device that tells y=
ou if the front and/or rear brakes have a leak.=C2=A0 I like the way it tel=
ls you AFTER you step on the pedal and it goes to the floor that you have a=
problem.=C2=A0 Duh. =C2=A0:-)
There was a thread (sorry Jay) a few days ago on another forum about removi=
ng the valve altogether to eliminate a possible leak.=C2=A0 You still run s=
eparate front and rear lines but just eliminate the next to worthless warni=
ng light shuttle valve. =C2=A0 =C2=A0
Sent from my keyboard
On Mar 26, 2016, at 10:50 PM, CosmicMag1380 via Spridgets <spridgets@autox.=
team.net> wrote:
Bear in mind that the later cars, 68 and up, had a dual master cylinder on =
the brake system. If you go that route, it is a good idea to change out the=
proportioning valve as well so that you have the redundant system...The la=
ter valves have a shuttle valve in them to allow for brakes on 2 wheels in =
the event of a leak. Gerard can bring you up to speed on this and likely ca=
n supply=C2=A0the parts.=C2=A0
On Fri, Mar 25, 2016 at 3:30 PM, =C3=AF=C2=BB=C2=BFJim f <spridgets@autox.t=
eam.net> wrote:
Hi all,
=C2=A0i'm finally getting back on my 1960 bugeye, ive got a new 1275 ready =
and now i want to upgrade the front brakes to discs, can someone tell what =
year mg=C2=A0midget donors do i needf,or this swap?, and are there any othe=
r issues i should be aware of, or is it a direct bolt on conversion, Thank =
You=C2=A0Jim F.
------------------------
spridgets@autox.team.net
Archive: http://www.team.net/archive
ag1380@gmail.com
--=20
Kent1960 Bugeye1983 Garage full of spridget parts!2010 Arrow shed full of e=
xcess spridget parts!!!=C2=A0
------------------------
spridgets@autox.team.net
Archive: http://www.team.net/archive
chartermi.net
--=20
Kent1960 Bugeye1983 Garage full of spridget parts!2010 Arrow shed full of e=
xcess spridget parts!!!=C2=A0
------------------------
spridgets@autox.team.net
Archive: http://www.team.net/archive
tinternet.com
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Content-Transfer-Encoding: quoted-printable
<html><head></head><body><div style=3D"color:#000; background-color:#fff; f=
ont-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, =
Sans-Serif;font-size:16px"><div id=3D"yui_3_16_0_ym18_1_1459150242643_3880"=
dir=3D"ltr"><span class=3D"">Many will already know what is written below =
so apologies to those, it may be helpful for those who haven't come across =
a brake shuttle valve before. </span></div><div id=3D"yui_3_16_0_ym18=
_1_1459150242643_3880" dir=3D"ltr"><span id=3D"yui_3_16_0_ym18_1_1459150242=
643_5127" class=3D"">This is a brake shuttle valve and CosmicMag1380 has po=
sted an excellent link to show what it is. Do not confuse it with num=
bers 51 and 46 which are the brake light switch and holder. I do not =
believe it was fitted to all drum brake motors. It has one</span>&nbs=
p;in port from the m/cylinder and 3 out ports, one to rear brakes, one each=
to the front brakes on either side and a warning light switch fitting at t=
he front. Inside this device is a sliding shuttle, in everyday use it=
is held in the middle with 'O' rings. It's function is to leave you =
with some braking in the event a brake line fails by sliding the shuttle si=
deways across to block off the failed brake line. In the event of a p=
oorly adjusted or maintained braking system you may well have to pump your =
brakes to get a pedal but at least you will have something as opposed to no=
thing. </div><div id=3D"yui_3_16_0_ym18_1_1459150242643_3880" dir=3D"=
ltr">You can trigger them when bleeding brakes if you are being particularl=
y hard on the brake pedal as the shuttle will slide across the to side with=
air in the system and you have to pull it to pieces to reset it. It =
is frequently a neglected part of the braking system with seal replacement =
ignored when servicing. It can freeze in the working position and bec=
ome redundant in the event of a brake line failure.</div><div id=3D"yui_3_1=
6_0_ym18_1_1459150242643_3880" dir=3D"ltr">Getting hold of a new one of the=
se devices is difficult. Whilst shown on many part suppliers pages it=
may well not be a feature in their stock trays.</div><div id=3D"yui_3_16_0=
_ym18_1_1459150242643_3880" dir=3D"ltr">You can live without one and just u=
se a brake pipe union to send the fluid to each of the the fronts and rear =
and many who don't care about a brake failure do just that. However, =
it is and can be a safety device that is effective when working properly on=
this era of vehicle. Having suffered brake failures in vehicles with=
and without these devices, I would rather go and a have a working one fitt=
ed.</div><div id=3D"yui_3_16_0_ym18_1_1459150242643_3880" dir=3D"ltr"><br><=
/div><div id=3D"yui_3_16_0_ym18_1_1459150242643_3880" dir=3D"ltr">Guy R Day=
</div><div id=3D"yui_3_16_0_ym18_1_1459150242643_3880" dir=3D"ltr"><br></di=
v> <div class=3D"qtdSeparateBR"><br><br></div><div class=3D"yahoo_quoted" s=
tyle=3D"display: block;"> <div style=3D"font-family: HelveticaNeue, Helveti=
ca Neue, Helvetica, Arial, Lucida Grande, Sans-Serif; font-size: 16px;"> <d=
iv style=3D"font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, L=
ucida Grande, Sans-Serif; font-size: 16px;"> <div dir=3D"ltr"><font size=3D=
"2" face=3D"Arial"> On Monday, 28 March 2016, 7:24, CosmicMag1380 via Sprid=
gets <spridgets@autox.team.net> wrote:<br></font></div> <br><br> <di=
v class=3D"y_msg_container"><div id=3D"yiv6373765299"><div><div dir=3D"ltr"=
><div>I may be wrong on the nomenclature but if you look at #48 on the Moss=
diagram, that is what I am talking about. </div><div><br clear=3D"none"></=
div><div><a rel=3D"nofollow" shape=3D"rect" target=3D"_blank" href=3D"http:=
//www.mossmotors.com/Shop/ViewProducts.aspx?PlateIndexID=3D29302">http://ww=
w.mossmotors.com/Shop/ViewProducts.aspx?PlateIndexID=3D29302</a></div><div>=
<br clear=3D"none"></div><div>The earlier cars with disk brakes had a singl=
e M/C and no shuttle valve in the proportioning valve. Depending on what Ji=
m F. has to work with, he may need to know that there is a difference betwe=
en the early and late disk brake systems.</div><div><br clear=3D"none"></di=
v><div>In a sense the name proportional valve appears to be correct as the =
influx of hydraulic pressure enters the union and is distributed equally am=
ong the four lines running to the four corners of the car.</div><div><br cl=
ear=3D"none"></div><div>My 2c...<br clear=3D"none"></div><div class=3D"yiv6=
373765299gmail_extra"><br clear=3D"none"><div class=3D"yiv6373765299yqt9157=
267237" id=3D"yiv6373765299yqt35506"><div class=3D"yiv6373765299gmail_quote=
">On Sun, Mar 27, 2016 at 5:29 AM, Rick Fisk <span dir=3D"ltr"><<a rel=
=3D"nofollow" shape=3D"rect" ymailto=3D"mailto:refisk@chartermi.net"; target=
=3D"_blank" href=3D"mailto:refisk@chartermi.net";>refisk@chartermi.net</a>&g=
t;</span> wrote:<br clear=3D"none"><blockquote class=3D"yiv6373765299gmail_=
quote" style=3D"margin:0px 0px 0px 0.8ex;padding-left:1ex;border-left-color=
:rgb(204,204,204);border-left-width:1px;border-left-style:solid;"><div><div=
>But it isn't a proportioning valve. It's simply a device that tells =
you if the front and/or rear brakes have a leak. I like the way it te=
lls you AFTER you step on the pedal and it goes to the floor that you have =
a problem. Duh. :-)</div><div><br clear=3D"none"></div><div>The=
re was a thread (sorry Jay) a few days ago on another forum about removing =
the valve altogether to eliminate a possible leak. You still run sepa=
rate front and rear lines but just eliminate the next to worthless warning =
light shuttle valve. <br clear=3D"none"><br clear=3D"none">Sen=
t from my keyboard</div><div><br clear=3D"none">On Mar 26, 2016, at 10:50 P=
M, CosmicMag1380 via Spridgets <<a rel=3D"nofollow" shape=3D"rect" ymail=
to=3D"mailto:spridgets@autox.team.net"; target=3D"_blank" href=3D"mailto:spr=
idgets@autox.team.net">spridgets@autox.team.net</a>> wrote:<br clear=3D"=
none"><br clear=3D"none"></div><blockquote type=3D"cite"><div><div dir=3D"l=
tr"><div>Bear in mind that the later cars, 68 and up, had a dual master cyl=
inder on the brake system. If you go that route, it is a good idea to chang=
e out the proportioning valve as well so that you have the redundant system=
...The later valves have a shuttle valve in them to allow for brakes on 2 w=
heels in the event of a leak. Gerard can bring you up to speed on this and =
likely can supply the parts. </div><div><br clear=3D"none"></div>=
</div><div class=3D"yiv6373765299gmail_extra"><br clear=3D"none"><div class=
=3D"yiv6373765299gmail_quote">On Fri, Mar 25, 2016 at 3:30 PM, =C3=AF=C2=BB=
=C2=BFJim f <span dir=3D"ltr"><<a rel=3D"nofollow" shape=3D"rect" ymailt=
o=3D"mailto:spridgets@autox.team.net"; target=3D"_blank" href=3D"mailto:spri=
dgets@autox.team.net">spridgets@autox.team.net</a>></span> wrote:<br cle=
ar=3D"none"><blockquote class=3D"yiv6373765299gmail_quote" style=3D"margin:=
0px 0px 0px 0.8ex;padding-left:1ex;border-left-color:rgb(204,204,204);borde=
r-left-width:1px;border-left-style:solid;"><div><div style=3D"color:rgb(0,0=
,0);font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Gra=
nde, sans-serif;font-size:16px;background-color:rgb(255,255,255);"><div><sp=
an>Hi all,</span></div><div><span><br clear=3D"none"></span></div><div><spa=
n> i'm finally getting back on my 1960 bugeye, ive got a new 1275 read=
y and now i want to upgrade the front brakes to discs, can someone tell wha=
t year mg</span> midget donors do i needf,or this swap?, and are there=
any other issues i should be aware of, or is it a direct bolt on conversio=
n, Thank You</div><span><font color=3D"#888888"></font></span><div dir=3D"l=
tr"> </div><div>Jim F.</div></div></div><br clear=3D"none">-----------=
-------------<br clear=3D"none">
<br clear=3D"none">
<a rel=3D"nofollow" shape=3D"rect" ymailto=3D"mailto:spridgets@autox.team.n=
et" target=3D"_blank" href=3D"mailto:spridgets@autox.team.net";>spridgets@au=
tox.team.net</a><br clear=3D"none">
<br clear=3D"none">
/www.team.net/donate.html">http://www.team.net/donate.html</a><br clear=3D"=
none">
<br clear=3D"none">
Archive: <a rel=3D"nofollow" shape=3D"rect" target=3D"_blank" href=3D"http:=
//www.team.net/archive">http://www.team.net/archive</a><br clear=3D"none">
Forums: <a rel=3D"nofollow" shape=3D"rect" target=3D"_blank" href=3D"http:/=
/www.team.net/forums">http://www.team.net/forums</a><br clear=3D"none">
ef=3D"http://autox.team.net/mailman/options/spridgets/cosmicmag1380@gmail.c=
om">http://autox.team.net/mailman/options/spridgets/cosmicmag1380@gmail.com=
</a><br clear=3D"none">
<br clear=3D"none"></blockquote></div><br clear=3D"none"><br clear=3D"all">=
<br clear=3D"none">-- <br clear=3D"none"><div><div>Kent</div><div>1960 Buge=
ye</div><div>1983 Garage full of spridget parts!</div><div>2010 Arrow shed =
full of excess spridget parts!!!</div><div> </div></div>
</div>
</div></blockquote><blockquote type=3D"cite"><div><span>-------------------=
-----</span><br clear=3D"none"><span></span><br clear=3D"none"><span><a rel=
=3D"nofollow" shape=3D"rect" ymailto=3D"mailto:spridgets@autox.team.net"; ta=
rget=3D"_blank" href=3D"mailto:spridgets@autox.team.net";>spridgets@autox.te=
am.net</a></span><br clear=3D"none"><span></span><br clear=3D"none"><span>D=
onate: <a rel=3D"nofollow" shape=3D"rect" target=3D"_blank" href=3D"http://=
www.team.net/donate.html">http://www.team.net/donate.html</a></span><br cle=
ar=3D"none"><span>Suggested annual donation: $12.75</span><br clear=3D"none=
"><span></span><br clear=3D"none"><span>Archive: <a rel=3D"nofollow" shape=
=3D"rect" target=3D"_blank" href=3D"http://www.team.net/archive";>http://www=
.team.net/archive</a></span><br clear=3D"none"><span>Forums: <a rel=3D"nofo=
llow" shape=3D"rect" target=3D"_blank" href=3D"http://www.team.net/forums";>=
http://www.team.net/forums</a></span><br clear=3D"none"><span>Unsubscribe/M=
anage: <a rel=3D"nofollow" shape=3D"rect" target=3D"_blank" href=3D"http://=
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.team.net/mailman/options/spridgets/refisk@chartermi.net</a></span><br clea=
r=3D"none"></div></blockquote></div></blockquote></div></div><br clear=3D"n=
one"><br clear=3D"all"><br clear=3D"none">-- <br clear=3D"none"><div><div>K=
ent</div><div>1960 Bugeye</div><div>1983 Garage full of spridget parts!</di=
v><div>2010 Arrow shed full of excess spridget parts!!!</div><div> </d=
iv></div>
</div></div></div></div><br><div class=3D"yqt9157267237" id=3D"yqt94857">--=
----------------------<br clear=3D"none"><br clear=3D"none"><a shape=3D"rec=
t" ymailto=3D"mailto:spridgets@autox.team.net"; href=3D"mailto:spridgets@aut=
ox.team.net">spridgets@autox.team.net</a><br clear=3D"none"><br clear=3D"no=
ne">Donate: <a shape=3D"rect" href=3D"http://www.team.net/donate.html"; targ=
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ed annual donation: $12.75<br clear=3D"none"><br clear=3D"none">Archive: <a=
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