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Old 11-28-2015, 08:14 PM   #11
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The disc brakes on the F53 are only a quarter inch larger diameter than the rotors on an f350.

Same two piston caliber.
Hydraulic.

I would rather the air actuated drums of the M2 chassis.
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Old 11-28-2015, 09:28 PM   #12
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Air actuated drums vs hydraulic caliper two piston disc I think we should both move on to electro induction brakes and we can both not about anymore worry about wear and tear
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Old 11-28-2015, 09:35 PM   #13
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Sorry that should be GCWR not GVWR. Most large truck front RV's are based off of commercial chassis. The Freightliner M2 offers disk now but they haven't really taken off. Smaller GCWR RV chassis are a different animal. Class A's are also typically hydraulic disk brakes whereas the M2 chassis are air brakes.
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Old 11-28-2015, 09:38 PM   #14
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It's also about safety. Hydraulic leak means reduced breaking. Air brakes are the opposite.
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Old 11-28-2015, 09:48 PM   #15
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Quote:
Originally Posted by Danesville View Post
Air actuated drums vs hydraulic caliper two piston disc I think we should both move on to electro induction brakes and we can both not about anymore worry about wear and tear

Like.
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Old 02-16-2016, 06:18 PM   #16
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It's interesting. The jayco Seneca, advertises disc brakes on their m2 chassis.


2016 Sabre 36QBOK
2015 Ram 3500 CUMMINS
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Old 02-16-2016, 08:43 PM   #17
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Quote:
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It's interesting. The jayco Seneca, advertises disc brakes on their m2 chassis.


2016 Sabre 36QBOK
2015 Ram 3500 CUMMINS
I believe they moved to all air brakes for 2016.
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Old 02-16-2016, 10:20 PM   #18
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Well, not necessarily their 2016, but their 2016 chassis. Minor difference, but they could have 2016's on a 2015 chassis.
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Old 02-17-2016, 10:38 AM   #19
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My experience with air brakes have been excellent. Provided the air system is maintained properly, air dryer, tanks checked and drained as needed to remove water. The stopping power is phenomenal. When used with the two stage engine brake the DX3 supplied... well it dont get any better than that.

Now what I've heard about disc brakes on heavy chassis. When I was having transmission service done on my bus back a few years ago, the shop had a 40' class A with brakes and rotors destroyed. At the time it appeared that the brake service area "pads" and rotors weren't enough to stop this 40' monster. The mechanic says they run across these all the time. Frankly, he was surprised they even put that system on such a heavy coach.

Unless they have made drastic changes in the system similar to Newell Coach, I believe the flimsy systems being installed out there wont be as reliable. They have their place, but maybe not in the big chassis market... but again, maybe big changes have been made that I'm not aware of? For me, I'll keep my air drum brakes..

I do know for a fact that Newell Coach uses disc brakes with ABS but unless builders are going to use these massive systems, the rest wont work.. some engineers get it !
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