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> NUMPTEE ebay purchase. SERVO HELL!!!
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Posted By : Calvin Andrew, 20-Dec-2005,
10:56am
Here i risk opening myself up to ridicule,
Bought a servo and master cylinder from a dolomite assuming that it would fit a herald.
i now know that this is wrong due to the need for a remote servo instead of a pedal actuated system.
1) can i cobble together a system using the brake pedal from a dolomite?
Why/why not.
cheers Calvin
ps. If not does anyone want to buy it from me?
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Posted By : Bob Bowling, 29-Dec-2005,
09:39pm
Brakes and cobble together - three words which shouldn't really go together.
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Posted By : Van Hamlin, 29-Dec-2005,
09:57pm
The reason for the remote servo is because unlike most cars (including Dolomites) Heralds have the master cylinder on top of the bulkhead, above
the pedal pivot and facing backwards and there is no room for an in-line servo unless you can find one with really small diameter.
Most cars have the master cylinder facing forwards and below the pedal pivot. If you did this on a Herald you would end up with the servo in the
way of the wheel.
You would have to have a much longer brake pedal, pivoted higher up. You would need a bracket to mount this on plus a bracket for the servo. Not
really worthwhile.
Van
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Posted By : Calvin Andrew,
30-Dec-2005, 12:22pm
unlike numptee and daft ebay purchase!!!
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Posted By : Chris Taylor,
30-Dec-2005, 01:14pm
Although you could well argue that if you want a servo, then established remote servo kits (similar to what Triumph did? I'm sure one of the
reprinted road tests from the early 60's I read showed a Herald with remote servo from the factory or a dealer) as per the GT6 original
installation is the obvious way to go.
However I've heard quite a few people say that a direct acting servo "feels" better with no delay in operation etc. That being so, I've
wondered whether a Metro servo installation would be feasible. (Minis have the same cylinder layout, but I don't know whether they ever had
servos).
This operates via a bellcrank to a master cylinder mounted vertically over the pivot. There is a right angle mounting bracket similar to the
Herald etc bracket. One would need to check master cylinder bore and clearances of the servo against the clutch cylinder and rear bonnet edge,
but it would be a very neat installation if it could be arranged........
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Posted By : Colin Wake,
30-Dec-2005, 01:48pm
Could you not use the existing Brake master cylinder, attached to a clutch slave, which would then press down the pedal on the dolomite
servo that could be mounted anywhere under the bonnet, the dolomite servo itself being connected to the brake system.
Should be easy to do!
Colin
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Posted By : Calvin
Andrew, 30-Dec-2005, 08:19pm
Sounds interesting, but would it be reliable enough?
What do others think?
Calvin.
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Posted By : Van
Hamlin, 30-Dec-2005, 11:10pm
It's possible, but I thought it was a joke!
If you had a slave cylinder the right diameter you could make an adaptor plate to mount it directly to the servo, and cut down the
operating arm on the servo to suit, doing away with the pedal and pivot. You would still have an extra reservoir to check
though.
Still a lot of work involved.
Another alternative would be to forget the servo and fit GT6/Vitesse brakes.
Van
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Posted By : Colin
Wake, 31-Dec-2005, 02:36pm
Well it was a bit tongue in cheek originally.... but then I started thunking... why not, it seems very simple.
Colin
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Posted By : William Davies, 31-Dec-2005,
09:41am
Any particular reason for needing a servo? I've always found the Herald brakes to be very effective when in good order, a servo wouldn't be on my
agenda.
Cheers,
Bill.