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Re: Drum Vs. Disc
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Thanks for being patient with me.:banghead: Sometimes (all of the time) I am a little thick headed. |
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Drums
* Pro - Less expensive since they're already stock on most of our trucks * Pro - Drums work better then discs as emergency brakes * Con - They stop poorly when wet and can get clogged with mud * Con - Stopping power can fade with repeated hard braking * Con - Larger tires Discs * Pro - More consistant, straight line stopping power * Pro - Dissipate heat better to stay cooler * Pro - Less affected by water or mud * Pro - Easier to maintain and faster to replace pads then shoes * Con - More expensive to install (but maintenance costs should be less) |
Re: Drum Vs. Disc
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When the government tells you your fleet miles per gallon average has to be X, and you can remove 10 pounds of steel from each vehicle by using thinner metal, you do it. Besides, with air bags, crumple zones, and a ton of other safety features your 3600 pound 72 Chevelle is less safe than your 2850 Chevy Cruze. Yes your fender gets totally mashed in a small fender bender but what price do you put on safety? Ask an ambulance chasing lawyer that question. Why does Ford spec 5W-20 oil for their engines? Same reason. Oils are better now and if you can shave .1 mpg off the fleet by specifying thinner oil, you do it. Those tenths of a mile per gallon add up. |
Re: Drum Vs. Disc
Another thing is that drums can explode outward with no warning if overheated and they crack. Mostly on big trucks, but it can happen on smaller cars and trucks too. Disc rotors can be worn down to nothing, but you have warning over time.
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Ok, I'm done arguing and being an inquisitive idiot. |
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Drums are better and so are carbs.....old school = less parts and better built.
computers are better on your desk. ABS and FI, no thanks...I like me and my steel parts doing the thinking. $0.02 |
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Carbs ARE better than FI... depends on who ya ask... ;) Gary |
Re: Drum Vs. Disc
For those of us who were around "back in the day",
Remember disc brakes were implemented when the compression ratios of engines were decreased for emissions reasons. I figure that unless you're running an old skool high compression engine, where your truck almost stops when you take your foot off the accelerator, discs would be the way to go. Just my $0.02 Dano |
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Carb will make more peak power. But Fuel Injection will make more AVG power over the given RPM band. Quote:
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Drums are lighter.
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What do the big semis use? Last I checked it was drum, and I'm pretty sure it's not because of cost.
Like has been said, there are advantages and disadvantages to both systems. |
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What I've researched is that when GM engineers were testing vehicles with lower compression engines they found that the drum brakes were inadequate, and stopping distances greatly increased. (Implementation of PVC and A.I.R. had no effect on stopping distances, on pre-disc brake vehicles.) Disc brakes then became mandatory in order to stop the newer vehicles in an acceptable distance with respect to safety. Obviously if drum brakes were not doing to do the job and disc brakes can do the job, then it logically follows that disc brakes are better. If my research is wrong, then so be it. I'm man enough to admit when I'm wrong. But either way, (research right or wrong) my conclusion is disc brakes stop better than drums. |
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i'm not sure that discs were ever mandated... and if they were, it was much later than most think. The ford escore EXP in the early 80's still had drums up front.
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;) |
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