Rusty Driver
Posts: 195
Joined: Mon Sep 04, 2017 6:22 pm
Re: 1948 KB5 Railway Express
cornbinder89 wrote:Again, these are very common in medium and heavy trucks. the same system was used in the K series larger trucks.
With heavier trucks, the shoes need to transmit the torque to the backing plate and not the cyl like most lighter brakes do.
My K'7's use the same system. It may be new to you, but foundation brakes are not new or unusual.
---Again, I heard you the first time. My comment about Chevy brakes was stated in humor as these parts are readily available as there were many more manufactured than KB5's and still very popular as opposed to a KB5 or any International truck. It would have been much easier to simply install a contemporary rear axle, front axle, and hydroboost braking system from a late model Freightliner under the truck, but my aim is to do my best to keep this truck as original as possible which is a lot more work, fabrication, and expense.
---I understand what you are calling "foundation brakes," and never heard that term, so must be an old slang for these old brakes. Perhaps with your knowledge you might have expanded on the term for those who also have never heard that term.
---I get the torque from the shoe being transmitted to the backing plate via the adjuster cams/locator pins. I referenced the air brake system as I work in a tractor-trailer shop where we only work on trailers and guess what, the shoes are anchored to the backing plate at one end and the "S-cam" working off the slack adjuster and air chamber is what expands the brake shoes on the non-anchored side. These must be new to you?
---I have seen many styles of brakes and how they attach and work, both auto and big trucks of various ton/class size. Most all are different when comparing year-to-year, manufacturer-to-manufacturer, chassis-to-chassis, and US made-to-foreign. If I knew them all, I'd be god, but yes, many are indeed new to me and that is how I and others learn by digging in and sorting things out.
---If this feature is seemingly irritating you, I can stop adding my updates. I prefer to see a reply a little more positive than, "It may be new to you, but foundation brakes are not new or unusual" because from my end of the computer, I find that statement a little personal and offensive rather than constructive.