(ET) brake upgrade

[Ken Olum <kdo cosmos phy tufts edu>]

I upgraded the brake on my E-15 with the kit from Bill Gunn.  It works
great now, but there were a few detours along the way, so here's some
information for others doing the same.  Maybe some info about brake
replacement should be added to the FAQ on Elec-trak.org (which seems
only to have 2 questions at the moment).

The first issue was removing the old brake disk hub.  The notes mention
"if you have to use heat".  But someone on this list mentioned failing
to get it off with heat and a puller and having to cut it off
instead.  I decided to go straight to cutting.  I cut about 3/4 of the
way through the hub with a moto-tool cut off wheel.  Then I put a
chisel in the slot and was easily able to break the hub in two.

Then there was the problem that Bill sent me the wrong size of
Woodruff key, but I was able to reuse the old one.

More of a problem was that my new brake rod was the mirror image of
the one in the instructions.  That by itself would not make much
difference, except I didn't realize it until I had already put the end
of the rod through the brake pedal mechanism the wrong way and put the
pedal back on.  Then when I went to remove the pedal again, I
discovered that when you have the pedal with the stop there is no way
to position the pedal so that the pin can be driven out.  I had to
drill a hole in the metal at the front of the footrest for the pin to
come out through.

                   Ken