[Healeys] Rotor Buttons

[sebring at illawarra.hotkey.net.au]

As previously mentioned the mechanical/dynamic load on these items is so little 
that I have driven with my rotor held together with electrical insulation tape.
Maybe the issue is one of being supplied the CORRECT ITEM ( THEY ALL LOOK THE 
SAME ) Can I suggest a trial fit before attempting to run the engine. By using 
some plastic bearing clearence strip attached to the end of the rotor then, 
hand rotate the engine and check there is no physical contact. I cannot believe 
that a car that is running so smoothly down the road suddenly has such 
excessive movement in the distributor shaft that it mechanically destructs its 
rotor. The effect on the points gap if such clearence existed would make the 
car run like crap to the extent most drivers would retutn home immediately. The 
effect of the high voltage spark jumping from rotor to the cap terminal is only 
going to increase the gap. Another suggestion if the failure occurs after 
having the cap off recently is that it has been incorrectly fitted causing 
mechanical interference.
In the past I have flattened and increased the length of an old rotor by 
hammering it flatter. ( blacksmith technology )Lucas stuff in a reasonable 
state of maintenance is ultra reliable. It all comes down to the skill and 
experience of the maintainer!