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I like the pinion brake set-up. That way if your driveline breaks you still have emergency braking.

Yes I found Meritor is also making a Disc brake system. It appears that the Bendix system is better for the semi-trucks though. Even if you could adapt the Meritor system to our trucks it will cost more then 3 average deuces ! If your going for the "oddity" factor and have unlimited funds then I...

I found out what is going on. All truck manufacturers must meet new federal guidelines for maximum stopping distance at 60 mph. The only way to meet this is with new "super" drums or the new air-disc brake system. The only way they where able to get the disc brakes to work properly was to make...

Thanks Red. I'll research it tonight .

I need to check this out ! You know they have tried for over 30 years to come up with a viable disc brake option. Now it seems Kenworth has done it. Or Bendix or Haldex or who ever came up with the idea ! The ones I remember always used a rod and apply lever to "squeeze" the pads together. I...

Are these 80,000 GVW trucks ? Using "ABS" I wouldn't be surprised, but drums brakes have had "ABS" on them since the late 1970's. Most over-the road truckers despised them I remember since it takes the control out of their hands. Who is the manufacturer of the trucks Red ? Last time I looked...

What are you talking about here ? The seals do not "blow out" from applying the brakes !

I can tell from your post you are not a heavy truck mechanic. I've worked in this industry for almost 40 years now and I'm one of a very few who have worked on heavy truck disc brakes so I know what I'm talking about. Disc brakes are better then drums in many ways, but cost is not one of them...

What truck are you driving ? A deuce ? Also if your driving into salt water 6 times a day I would not want to be the mechanic who must work on your brakes. You do realize that is not a good idea ?

They will also cost you 3 times what your deuce is worth too. Disc brakes are a great idea but expensive. Water, mud and dirt is also hard on disc brakes too. Ever seen a pebble get stuck between a brake pad and rotor ? I have and it's not a pretty sight. Disc brakes also can warp badly when...

In Europe there big trucks are the size of our medium trucks . A 18 wheeler would not fit in most European cities.

Sorry gringeltaube, I actually did forget that this was about disc brakes ! I usually just go to the end of a thread and read what's new. After awhile you tend to forget what started it all !

I bought 6 of the 1.5" wheel cylinders. The others where for spares. Now I'm thinking "what if I put these on all the wheels ? " The only thing stopping me is the air-pac. (get it the only thing stopping me ! ) I know bad joke ! Seriously though, I'm not sure the short style air-pac has enough...

I'll just say this, in the transit industry they played around with using disc brakes for a few years. Now they all are using drum brakes again. There is a reason for this, on a large rig like a bus which makes frequent stops the heat generated by the discs would cause the wheel bearings to fry...

The pressures coming out of a dual master cylinder are the same. The pressure is reduced for rear drums by metering valves. Sometimes the valves are in the output ports of the master cylinders themselves. Summit Racing used to carry a "Adjustable Proportioning Valve" which would allow...

The longer I have looked at this, the more I'm inclined to just stay with my stock dual brake system. Maybe go with the 1.5" front wheel cylinders, but not disc. If I had a "Cummins" putting out 400HP, then yes lets look at upgrading the brake system, but with the Multifuel engine I see no...

Mudguppy, I'm not trying to "dis you" in any way. I'm trying to get factual information out to the general membership. Steves6X6X6 system is great, and If I had a lot of money and time to devout to it I would go with something like his system. I just think using the stock components which we can...

OK SP5, this thread was about being able to use the stock master cylinder in a 6 disc system. We are now entering the Twilight Zone here. Yes you are correct in the proper name of this style of brakes, but the fact I was trying to convey is that BOTH pistons move in the wheel cylinder. Now I can...

The drum system is moving fluid back and forth and under ideal conditions would never need any fluid at all. The disc system will use brake fluid to replace the fluid lost due to the new position of the piston. The piston is continually moving closer to the rotor after every application of the...

The rear drum brakes will uses the same amount of fluid regardless of what type of shoe activation used. The deuce rear brake cylinders are not a single servo system, as there are 2 pistons in each cylinder. The difference between the deuce and a modern system is the anchoring of the shoes. The...