Re: KPack
Posted by HH56 On 2021/4/14 14:39:52
Check out the service counselor article on installing the Easamatic kit in 51-2 cars.https://packardinfo.com/xoops/html/downloads/SC/SC-VOL26NO5.pdf The brake pedal location and installation is the same for 54 as is almost everything else in the article. The 54 exception is the 52 firewall mounted breather was no longer on the firewall but was incorporated in the top of the Treadlevac for 53 and later units. The photo shows the pedal side of a 55 bracket which used the same location.
The original power brake pedal has the brake unit mounted at the bottom of the arm for a ratio of 1:1. That was OK for the Treadlevac and its fairly small diameter long stroke ram displacement action squeezing fluid out of the cylinder but not good for the modern larger but short stroke pistons pushing the fluid. Typically modern piston boosters and manual systems need about a 4:1 ratio for power and 6 or 7:1 for manuals.
As the Packard power brake pedal will not work in stock form for use with a modern cylinder many brand x or aftermarket pedals or seriously modified Packard units such as was devised by Craig Hendrickson for his first ever install of a modern power brake system have been tried. The stock manual pedal will work for manual cylinders as long as a master can be found that side mounts directly to the frame as the original did. Mounting a modern dual cylinder if it needs extra brackets for front mounts and/or other conversions presents challenges in trying to line up linkage between the pedal and cylinder.
Attach file:
pedal bracket.jpg (178.73 KB)
The original power brake pedal has the brake unit mounted at the bottom of the arm for a ratio of 1:1. That was OK for the Treadlevac and its fairly small diameter long stroke ram displacement action squeezing fluid out of the cylinder but not good for the modern larger but short stroke pistons pushing the fluid. Typically modern piston boosters and manual systems need about a 4:1 ratio for power and 6 or 7:1 for manuals.
As the Packard power brake pedal will not work in stock form for use with a modern cylinder many brand x or aftermarket pedals or seriously modified Packard units such as was devised by Craig Hendrickson for his first ever install of a modern power brake system have been tried. The stock manual pedal will work for manual cylinders as long as a master can be found that side mounts directly to the frame as the original did. Mounting a modern dual cylinder if it needs extra brackets for front mounts and/or other conversions presents challenges in trying to line up linkage between the pedal and cylinder.
Attach file:
pedal bracket.jpg (178.73 KB)
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