I did two things:
1) Limit the travel of the pedals to about 2/3 of the stock range, by
taking off the cover and stacking some small pieces of .040 aluminum
under the stops, between the tabs that the pedals pivot on. I rivited
these in place with pop rivits. I've also read of people placing coins
there for the same effect.
Limiting the travel has some other benefits, not the least of which is
that the pedal springs last a *lot* longer! The feel is also more
realistic.
2) Make a larger, heavier base of plywood. I made mine of a piece of
5/8" plywood about 2 feet square. I screwed some 1x2 blocks to the
plywood, in front, behind, and on each side of the pedal base. I
screwed two small metal strips to the front blocks so they just hook
over the front of the pedal base. I can lift the pedals out by picking
the pedal unit up from the rear, but when it's dropped in place, I can
stomp away to my heart's content and the pedals are as solid as a real
car's pedals.
Oh yes, I screwed my plywood base to a table leg with a small angle
bracket, to keep the unit from sliding away from me. My brother built
similar base units, but made them longer in front so his chair legs can
sit on them to keep them in place.
--
Alison Hine