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Ok. At the risk of getting flamed by more armchair warriors, I=E2=80=99ll ha=
ve a pop at a reply.
=E2=80=98BlueHealey=E2=80=99 is my carefully modified and upgraded 100/6. Wh=
en first built and restored it had the original drum brakes and 7/8=E2=80=9D=
rear wheel cylinders. All very standard. After a few years I decided to up=
grade to discs at the front. This was driven by the need for more effective b=
ite and control of the brakes in modern traffic conditions. The drums just d=
idn=E2=80=99t inspire confidence.
Jeremy Welch (DenisWelch Motorsport) can supply a disc brake kit with Calipe=
rs the same size as BJ8 (M16), but a bolt pattern that fits the adaptor for t=
he early uprights. It all bolts up a treat. The bonus is that the original 3=
/4=E2=80=9D Master Cylinder works well with the big Calipers. No servo need=
ed and pedal travel is only slightly longer then previously.
The armchair surfer in me worried that the pedal travel might be too great a=
nd that 7/8=E2=80=9D Master and Servo might be a phase two requirement. It w=
asn=E2=80=99t.
Then came the road test. Brakes felt good despite being new and I set off to=
put some heat cycles into the pads with steadily harder stops being applied=
. You guessed it - I could lock the rears much sooner than I was happy with=
. Good solid, hard braking on dry roads appeared to lighten the rear end an=
d one or other of the rears would chirrup and skid.
I reduced the rear cylinders to 3/4=E2=80=9D and the problem was gone. By t=
he time I got the rears to smoke the fronts were letting go too.
It is a good set up, certainly as good as my previous BJ8 but the servo isn=E2=
=80=99t needed.
Alan Bromfield
Bluehealey.com
Alan - from my iPad
> On 28 Aug 2019, at 12:23, Chris Dimmock <austin.healey@gmail.com> wrote:
>=20
> Seriously,=20
> So all you men who have fitted rear disc brakes to your Healey, have only e=
ver done this in order to "reduce" your rear braking effort?
> To make your rear brakes "less efficient" than they already are?
> And you've fitted Discs to "increase" your unsprung weight, and upset the b=
alance of your car?
> Seriously?
> Sincerely, this group used to share ideas.=20
> Now, instead of people saying "nah, tried that, but I locked rear wheels" i=
t's a bunch of hypothetical Wikipedia answers.=20
> So I will ask again.=20
> Has anyone else changed their rear wheel cylinders on a 3000 from 3/4 inch=
to 7/8 inch?
> If yes - I'd love to hear your feedback.=20
> If you've fitted disk brakes on your Jensen Healey, or what ever - I'm not=
interested in your comments. Im not interested in the theory - I'm interest=
ed in the practice and real results from on the road.=20
> Too much bullshit internet "searching" is infiltrating this list. I've alw=
ays only answered when I've actually done something.=20
> Armchair experts who google answers and Have now experience in the questio=
n I've asked need to pull their head in - that's you Kees.=20
>>> Has anyone else ever changed their rear wheel cylinders from 3/4 inch to=
7/8 inch?
> If you have? I'd love to hear from you.=20
> If you haven't, well, I don't really care!
> Yes. I'm pissed off.=20
> People who have the answer - from experience- don't answer when 4 others r=
espond.=20
> I'm just pissed off=20
> A lot going on.=20
> Chris
>=20
> On 28 Aug 2019, at 2:29 am, Michael Salter <michaelsalter@gmail.com> wrote=
:
>=20
>> Have to agree with Kees on this one.=20
>> We have a brake bias control on AHX12 and I can certainly attest to the f=
act that when the conditions change to "wet" removing a lot of rear braking i=
s absolutely essential to prevent the car from swapping ends.=20
>> As most road cars don't have adjustable brake bias I would be very carefu=
l in trying to increase the rear braking.
>> When braking into a corner the last thing you want is the rear end coming=
around, particularly in the wet.
>>=20
>> M
>>=20
>>> On Tue, Aug 27, 2019 at 12:09 PM Kees Oudesluijs <coudesluijs@chello.nl>=
wrote:
>>> Whatch out driving in the rain as the rear brakes will lock the rear=20
>>> wheels much quicker than with the smaller pistons.Rear brakes are only=20=
>>> providing a small portion of the total brake force.
>>>=20
>>> Kees Oudesluijs
>>>=20
>>> Op 27-8-2019 om 18:04 schreef Chris Dimmock:
>>> > Hi Men
>>> >=20
>>> > I just did. Sick of the rear brakes doing nothing. Freeloaders!!
>>> > Yes, no problem with seized wheel cylinders, no problem with the flexi=
ble hose - just bugger all wear on the rear linings.
>>> > I'll let you know how it goes on my BJ8
>>> > Best
>>> > Chris
>>> >
>>> > _______________________________________________
>>> > Support Team.Net http://www.team.net/donate.html
>>> > Suggested annual donation $12.75
>>> >
>>> > Archive: http://www.team.net/pipermail/healeys http://autox.team.net/a=
rchive
>>> >
>>> > Healeys@autox.team.net
>>> > http://autox.team.net/mailman/listinfo/healeys
>>> >
>>> > Unsubscribe/Manage: http://autox.team.net/mailman/options/healeys/coud=
esluijs@chello.nl
>>> >
>>> _______________________________________________
>>> Support Team.Net http://www.team.net/donate.html
>>> Suggested annual donation $12.75
>>>=20
>>> Archive: http://www.team.net/pipermail/healeys http://autox.team.net/arc=
hive
>>>=20
>>> Healeys@autox.team.net
>>> http://autox.team.net/mailman/listinfo/healeys
>>>=20
>>> Unsubscribe/Manage: http://autox.team.net/mailman/options/healeys/michae=
lsalter@gmail.com
>>>=20
>> _______________________________________________
>> Support Team.Net http://www.team.net/donate.html
>> Suggested annual donation $12.75
>>=20
>> Archive: http://www.team.net/pipermail/healeys http://autox.team.net/arch=
ive
>>=20
>> Healeys@autox.team.net
>> http://autox.team.net/mailman/listinfo/healeys
>>=20
>> Unsubscribe/Manage: http://autox.team.net/mailman/options/healeys/austin.=
healey@gmail.com
>>=20
> _______________________________________________
> Support Team.Net http://www.team.net/donate.html
> Suggested annual donation $12.75
>=20
> Archive: http://www.team.net/pipermail/healeys http://autox.team.net/archi=
ve
>=20
> Healeys@autox.team.net
> http://autox.team.net/mailman/listinfo/healeys
>=20
> Unsubscribe/Manage: http://autox.team.net/mailman/options/healeys/blueheal=
ey@gmail.com
>=20
--Apple-Mail-9C060CDE-B2A1-4727-961B-BA5BA0DB025B
charset=utf-8
Content-Transfer-Encoding: quoted-printable
<html><head><meta http-equiv=3D"content-type" content=3D"text/html; charset=3D=
utf-8"></head><body dir=3D"auto">Ok. At the risk of getting flamed by more a=
rmchair warriors, I=E2=80=99ll have a pop at a reply.<div><br></div><div>=E2=
=80=98BlueHealey=E2=80=99 is my carefully modified and upgraded 100/6. When f=
irst built and restored it had the original drum brakes and 7/8=E2=80=9D rea=
r wheel cylinders. All very standard. After a few years I decided to u=
pgrade to discs at the front. This was driven by the need for more effective=
bite and control of the brakes in modern traffic conditions. The drums just=
didn=E2=80=99t inspire confidence.</div><div>Jeremy Welch (DenisWelch Motor=
sport) can supply a disc brake kit with Calipers the same size as BJ8 (M16),=
but a bolt pattern that fits the adaptor for the early uprights. It a=
ll bolts up a treat. The bonus is that the original 3/4=E2=80=9D Master Cyli=
nder works well with the big Calipers. No servo needed and pedal trave=
l is only slightly longer then previously.</div><div>The armchair surfer in m=
e worried that the pedal travel might be too great and that 7/8=E2=80=9D Mas=
ter and Servo might be a phase two requirement. It wasn=E2=80=99t.</div><div=
><br></div><div>Then came the road test. Brakes felt good despite being new a=
nd I set off to put some heat cycles into the pads with steadily harder stop=
s being applied. You guessed it - I could lock the rears much sooner t=
han I was happy with. Good solid, hard braking on dry roads appeared t=
o lighten the rear end and one or other of the rears would chirrup and skid.=
</div><div>I reduced the rear cylinders to 3/4=E2=80=9D and the problem was g=
one. By the time I got the rears to smoke the fronts were letting go t=
oo.</div><div><br></div><div>It is a good set up, certainly as good as my pr=
evious BJ8 but the servo isn=E2=80=99t needed.</div><div>Alan Bromfield</div=
><div><a href=3D"http://Bluehealey.com";>Bluehealey.com</a></div><div><br><di=
v id=3D"AppleMailSignature" dir=3D"ltr">Alan - from my iPad</div><div dir=3D=
"ltr"><br>On 28 Aug 2019, at 12:23, Chris Dimmock <<a href=3D"mailto:aust=
in.healey@gmail.com">austin.healey@gmail.com</a>> wrote:<br><br></div><bl=
ockquote type=3D"cite"><div dir=3D"ltr"><meta http-equiv=3D"content-type" co=
ntent=3D"text/html; charset=3Dutf-8"><div>Seriously, </div><div id=3D"A=
ppleMailSignature">So all you men who have fitted rear disc brakes to your H=
ealey, have only ever done this in order to "reduce" your rear braking effor=
t?</div><div id=3D"AppleMailSignature">To make your rear brakes "less effici=
ent" than they already are?</div><div id=3D"AppleMailSignature">And you've f=
itted Discs to "increase" your unsprung weight, and upset the balance of you=
r car?</div><div id=3D"AppleMailSignature">Seriously?</div><div id=3D"AppleM=
ailSignature">Sincerely, this group used to share ideas. </div><div id=3D=
"AppleMailSignature">Now, instead of people saying "nah, tried that, but I l=
ocked rear wheels" it's a bunch of hypothetical Wikipedia answers. </di=
v><div id=3D"AppleMailSignature">So I will ask again. </div><div id=3D"=
AppleMailSignature">Has anyone else changed their rear wheel cylinders on a 3=
000 from 3/4 inch to 7/8 inch?</div><div id=3D"AppleMailSignature">If yes - I=
'd love to hear your feedback. </div><div id=3D"AppleMailSignature">If y=
ou've fitted disk brakes on your Jensen Healey, or what ever - I'm not inter=
ested in your comments. Im not interested in the theory - I'm interested in t=
he practice and real results from on the road. </div><div id=3D"AppleMa=
ilSignature">Too much bullshit internet "searching" is infiltrating this lis=
t. I've always only answered when I've actually done something. </div><=
div id=3D"AppleMailSignature">Armchair experts who google answers and Have n=
ow experience in the question I've asked need to pull their head in - that's=
you Kees. </div><div id=3D"AppleMailSignature"><blockquote type=3D"cit=
e"><div class=3D"gmail_quote"><blockquote class=3D"gmail_quote" style=3D"mar=
gin: 0px 0px 0px 0.8ex; border-left-color: rgb(204, 204, 204); padding-left:=
1ex;"><font color=3D"#000000"><span style=3D"background-color: rgba(255, 25=
5, 255, 0);">Has anyone else ever changed their rear wheel cylinders from 3/=
4 inch to 7/8 inch?</span></font></blockquote></div></blockquote>If you have=
? I'd love to hear from you. </div><div id=3D"AppleMailSignature">If yo=
u haven't, well, I don't really care!</div><div id=3D"AppleMailSignature">Ye=
s. I'm pissed off. </div><div id=3D"AppleMailSignature">People who have=
the answer - from experience- don't answer when 4 others respond. <br>=
I'm just pissed off </div><div id=3D"AppleMailSignature">A lot going on=
. </div><div id=3D"AppleMailSignature">Chris</div><div><br>On 28 Aug 20=
19, at 2:29 am, Michael Salter <<a href=3D"mailto:michaelsalter@gmail.com=
">michaelsalter@gmail.com</a>> wrote:<br><br></div><blockquote type=3D"ci=
te"><div><div dir=3D"ltr"><div class=3D"gmail_default" style=3D"font-family:=
comic sans ms,sans-serif;font-size:small">Have to agree with Kees on this on=
e. <br></div><div class=3D"gmail_default" style=3D"font-family:comic sans ms=
,sans-serif;font-size:small">We have a brake bias control on AHX12 and I can=
certainly attest to the fact that when the conditions change to "wet" remov=
ing a lot of rear braking is absolutely essential to prevent the car from sw=
apping ends. <br></div><div class=3D"gmail_default" style=3D"font-family:com=
ic sans ms,sans-serif;font-size:small">As most road cars don't have adjustab=
le brake bias I would be very careful in trying to increase the rear braking=
.</div><div class=3D"gmail_default" style=3D"font-family:comic sans ms,sans-=
serif;font-size:small">When braking into a corner the last thing you want is=
the rear end coming around, particularly in the wet.</div><div class=3D"gma=
il_default" style=3D"font-family:comic sans ms,sans-serif;font-size:small"><=
br></div><div class=3D"gmail_default" style=3D"font-family:comic sans ms,san=
s-serif;font-size:small">M<br></div></div><br><div class=3D"gmail_quote"><di=
v dir=3D"ltr" class=3D"gmail_attr">On Tue, Aug 27, 2019 at 12:09 PM Kees Oud=
esluijs <<a href=3D"mailto:coudesluijs@chello.nl";>coudesluijs@chello.nl</=
a>> wrote:<br></div><blockquote class=3D"gmail_quote" style=3D"margin:0px=
0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">What=
ch out driving in the rain as the rear brakes will lock the rear <br>
wheels much quicker than with the smaller pistons.Rear brakes are only <br>
providing a small portion of the total brake force.<br>
<br>
Kees Oudesluijs<br>
<br>
Op 27-8-2019 om 18:04 schreef Chris Dimmock:<br>
> Hi Men<br>
> <br>
> I just did. Sick of the rear brakes doing nothing. Freeloaders!!<br>
> Yes, no problem with seized wheel cylinders, no problem with the flexib=
le hose - just bugger all wear on the rear linings.<br>
> I'll let you know how it goes on my BJ8<br>
> Best<br>
> Chris<br>
><br>
> _______________________________________________<br>
> Support <a href=3D"http://Team.Net";>Team.Net</a> <a href=3D"http://www.=
team.net/donate.html" rel=3D"noreferrer" target=3D"_blank">http://www.team.n=
et/donate.html</a><br>
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><br>
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