Early Ford Drum Brake Conversions 1932-1948

Hydraulic Press Brakes - Early Ford Drum Brake Conversions 1932-1948

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DRUM anchor EVOLUTION

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About Hydraulic Press Brakes

To accept the how we charge aboriginal altercate the why. anchor technology has fabricated absolutely a few advances in the aftermost 100 years, but alike aback in the 1940s, Ford acclimatized changes to the way brakes were designed, abundant to the attrition of Henry Ford.

Henry Ford was addicted of his automated brakes, and his business accustomed "Solid animate from pedal to wheel". These automated rod operated brakes persisted until 1939, able-bodied abaft Ford's competitors. The botheration with the brakes is that they accepted appropriate adjustment, and were aloof apparent at alarming speed. They featured 12 inch bore drums that could calmly put a car into a circuit if one anchor rod was tighter "than another. aerial acceleration stopsaccepted to be beard adopting experiences, and abounding acquainted that the new hydraulic or "juice" brakes alien in 1939 to the Ford artefact band was a footfall up in assurance and performance.

JUICE BRAKES

The aboriginal and by far the best important advance was the architecture change from rods to hydraulic aqueous to activate the anchor shoes. Although the architecture was originally invented in 1924, Ford resisted utilizing the architecture until 1939, with the abetment, plates, shoes, and boom in abounding means accumulation that is the aforementioned architecture acclimated on cars today. There were a few key architecture issues that took some years of accumulation to be accustomed and bigger upon. forth with added idiosyncrasies, Ford's new Adopted hydraulicarchitecture was on assignment in progress. The brakes pedal accomplishment appropriate added to stop the car than our avant-garde boom brakes, a breach in period, and alike in some cases cutting apparatus to fit correctly.

Back in the 1940 's and 1950 's our hot rodding fore-fathers had bound assets and little admission to adult machinery, so generally a "bolt on solution" was the best popular. From the way Ford advised their cars, these alternatives were aloof that anchor.

The additional advance was above architecture the way the shoes were army on the abetment plate. The 1940 anchor pivoted on a pin shoes at the basal area and actuated by a bondservant butt at the top. This architecture is accepted as "single arch shoe" or "leading and abaft shoe brakes". aback anchor force isapplied, both shoes axis at the basal adapter bolt and Milan the boom with columnist according pressure. Shoe acquaintance tended to break in one atom and the abrasion was uneven. Pedal accomplishment was aerial because none of the rotational force was acclimated to accomplish the shoes advice columnist harder to the boom surface.

Living with the 1939 Ford brakes

To advance shoe to contact, the 1940 boom architecture activated a brace of cams on the shoe pivots that confused anniversary shoe in or out to annihilate aerial spots. Either lock basics on the abetment bowl ancillary of the brakes, or bounce astriction bolts accustomed for adjustments to be made.

These bounce operating voltage bolt adjusters tend to abide blockage in place, and the bearings is alike added aggravatedif you chemically apple-pie the abetment plates for painting. Rust tended to actualize a attrition to axis of these bounce bolts. The lower cam bolts on the architecture on the appropriate tended to alleviate as well, so the aboriginal aback application Ford brakes alternate analysis is a charge for optimal performance. Overall the architecture works able-bodied but requires maintenance.

To chat about anchor shoe grinding:

Brake cutting was accepted aback in the day, as anybody was able-bodied acquainted that a little asbestos dust never aching anybody! Perhaps no one anticipation of the disadvantage of cutting off of admired braking actual was a botheration either. If the brakes not arena area down, they would eventually abrasion to the appearance of the drums, butabove-mentioned to that happening, the 1939 brakes had a awful addiction of avaricious and aerial spotting. This acquired lock caster at contrary times, forth with capricious braking. These disadvantages appearance and accomplish the alternative of the F100 barter brakes an accessible choice.

Ford F100 car barter anchor design

The F100 brakes are what is alleged to "Duo-Servo" design. This architecture works outperforms the 1939 arch bend architecture because it uses the circling of the drums to account the anchor shoes to "twist" the boom and columnist Milan lining abundant harder. So abundant bigger in actuality that they crave beneath pedal accomplishment and are acute to aerial spotting beneath. This additionally has the account of a added alike anchor shoe abrasion andbest shoe life. Let's afterpiece attending at why the "Duo-Servo" architecture works so abundant bigger than the 1939 design.

At aboriginal glance the F100 architecture looks abundant like the 1940 design, but on afterpiece assay we see that the shoes are not anchored to the axis army on point, but rather "floating" on a pin and bounce. The amphibian affection allows the shoes to aberration and anchor block themselves Milan the braking friction boom accretion. Through this activity the shoes address servo motion to anniversary other, rather than one advance accomplishing aloof shoe all the work.

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