right then.......my stupid back is still telling me in no uncertain terms that crawling under a car is not recommended just yet......so I have been doing some 'armchair engineering'......
I have been thinking about the the handbrake, and it seems there are two [connected, I believe] problems;
1. the handbrake is often ineffectual, unless adjusted to fine tolerances
2. pads wear out ridiculously quickly.
Taking no 2 first, in theory, pad wear should be negligible if the handbrake is used only as a parking brake, and the occasional 'hill start'. However, with the elan design, it seems that pad wear is inevitable as the pads will contact the moving disc under their own weight, i.e rotating about the hinge pin. This will happen even if the arms are held apart by a spring on the adjusting rod.
The two 'centralising pins/springs' which are 'supposed to keep the pads away from the disc are not really springs, since they are malleable, and are fairly easily bent. Since they are not tempered, when the hand brake is applied, they will simply bend back until the pads are contacting the disc, and stay there.
[This brings in problem 2, and the difficulty of adjusting the centralising pins so that they are just holding the pads off the disc.]
Therefore, my proposed solution is as shown
attachment=0]DSCF00011.JPG[/attachment
My first crude idea was the rubber tube [short piece cut from a vacuum advance connection tube] pushed on to the hook on the back of the pads. This would give a bit of 'spring' to the centralising pins to keep the pads off the discs
My next thought was that a more positive 'spring ' would be better. So I drilled a 4mm hole in the small area of the pad which is not covered by friction material, and inserted a M4 s/s screw and nut, with a suitable s/s spring. The screw will engage in a 4mm hole in the other [opposite] pad, running freely in it.
This will give a positive force keeping the pads apart, and allow fine adjustment.
What do you think guys?
Fred