RESTORING a 50s Seven 750 SPECIAL

[Renaud]

"Still intrigued by the hydraulic options though, when one has a hydraulic system to plumb into...."
Yes of course, simpler!

[Nick Lettington]

I'm not convinced that a hydraulic handbrake complies with the regulations for a road vehicle as hydraulic systems can creep. Fine for hill starts, no good for parking. You may not be worried about that?

[squeak]

I believe the handbrake aka the emergency brake, has to be a completely separate system.

[Alan]

An hydraulic handbrake is allowable on a car registered before, I think, 1968. However you are required to have two separate braking systems. You can’t just use the existing hydraulics with another application method.

[mhacche]

I think your Speedex will be a great asset to you and I will pay close attention to the work you decide to carry out on her, I am at the chassis stage myself at the moment and not really sure which body style to choose suffice to say the speeex always looked quick even when at a standstill ?

Regards

Martin

[JonE]

An hydraulic handbrake is allowable on a car registered before, I think, 1968. However you are required to have two separate braking systems. You can’t just use the existing hydraulics with another application method.

ok, thanks all - so that rules that one out then, when there are perfectly good mechanical mechanisms on the back plates. Perhaps nice short Speedy cables are the way forward... unless anyone knows of a middle way...
I think it makes sense that the cross shaft comes out for use elsewhere and to get the hardy-spicer prop in.

p.s. anyone got a 4 hole pinion flange not doing anything?

[JonE]

Just contemplating cylinder heads and the need for Speedex to (efficiently) exit towards the rear of the car for the header.
I'm actually quite happy with a steel 37 head otherwise. But a comment was intriguing:

"one of the interesting things I've seen regarding cylinder heads is using the core-plug holes and feeding a pipe up from one or two (or more) vertically on to a 'horizontal' pipe that can face/drain forwards or backwards depending on your needs".

Has anyone done or experienced such that they would see as a good means of converting a steel head? I realise the core plug holes are smaller than the standard water outlet, but playing with my new electric water pump I see that that will be the smallest bore on the whole system.

[Nick Lettington]

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Well Jon. If you are feeling adventurous,  the LRM head shows the way, with three sets of elongated studs and some bespoke water branches. The second photo from a recent Facebook post shows  a similar approach... just needs a little bravery with your dremel?

[JonE]

The former explains something from Dave Armstrong's SIE document - one of the cars with posh chrome outlets from the three, on an LRM.
That is very good to see that second image. I must admit I think that it still has just as much, if not more, hardware than associated with just using the HC head outlet, though I realise its more efficient! As mine isn't going to be a high stress engine I'll wait. I have too many potential bravery projects you have already tempted me with...

[Austin in the Shed]

Have you noticed how the head nuts pulled into the soft LRM head. Alta's I've seen do the same.