Re: [AMC-list] 62 classic brakes on 63 440H

[adh@xxxxxxxxxxxxxxxxx (Sandwich Maker)]

" From: d stohler <das24rules@xxxxxxxxx>
" 
" hey guys. im trying to get back into my old ramblers, now that my eagles
" are going pretty decent. got my '63 440H going again yesterday after a
" 2.5 year or so rest. i forgot how HARD the pedal is to push with manual
" 9x2 drums. i have a parts car '62 classic with 9x2.5" front drums. i
" know there are major clearance issues with the steering knuckle. its
" REAL close. i was just wonderinf if i can maybe swap over the entire
" hub, brake back plate, drums ect and get the 2.5" drums up front? i
" THINK the rears are the same? but im not sure as the car dont have the
" brakes on it, they are in my coveted rambler parts pile. lol. how could
" i make this car not need both feet stomping as hard as possible to get
" the car to WHOA!! wondering if the master cylinder from the classic
" might be bigger bore and work? its been a few years and MANY beers since
" i messed with master cyl/wheel cyl bore sizing to remember what one
" wanted to be bigger ect. i still need to figure out how to get a title
" for the car. otherwise, it might get the motor pulled and put into my
" casper car. (my '62 classic custom 2 door.)

yes, you can swap everything from the spindle out.  you might also
gain enough offset for 14x6" hornet rims.

my '66 and '68 americans never took both feet to lock the brakes up.
[then again, i also bicycle-commuted many years, and that builds the
leg muscles up.]  they also had 9x2.5" fronts stock.

v8 americans had 10x2.5" fronts, same knuckles.

master vs. wheel cyl - it's easy.  you want to translate foot pressure
into fluid pressure, right?  your foot is the total pressure on the
entire master cyl piston; the bigger it is, the less pressure psi --
per square inch.  on the wheel side, psi is constant, so the bigger
the cylinder the more square inches and the more force.

you don't gain something for nothing.  like a pulley system, you have
to give travel up to increase force.  in a drum system travel usually
isn't a consideration, but disks run with more rotor clearance - or at
least used to.  in addition, disks don't self-actuate like drums,
which use the rotation of the drum to wedge the shoes tighter when you
apply them, hence the proliferation of power boosters.

this brings a point: if you've rebuilt your american brakes, could you
have swapped parts around?  each part has to be in the right place to
get the wedging action, and your pedal would be harder without it.
________________________________________________________________________
Andrew Hay                                  the genius nature
internet rambler                            is to see what all have seen
adh@xxxxxxxxxxxxxxxxx                       and think what none thought
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