Rear disk?
01-10-2007, 09:39 PM
#21
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Originally Posted by dgHotLava
consider ALL the factors and the drums are more expesive. more labor, more parts, more machining...
but whatever...you think what you like, i'm comfortable in my knowledge (and experiecnces).
but whatever...you think what you like, i'm comfortable in my knowledge (and experiecnces).
" Occasionally, however, ......... a manufacturer will revert from a previous four-wheel disc setup to drum brakes for the rear of the car in order to cut both production costs and purchase price."
01-10-2007, 09:56 PM
#22
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more parts involved doesnt necessarly mean it cost more or even cost more to make.. they dont make one spring at a time for each drum.. everything is mass produced.. cheaper to make alot of springs..
the materials being produced for disc are of higher quality and cost more money to produced..
besides.. 70-80% of your braking is done with your front brakes.. thats why manufactures mix match.. you dont awesome brakes in the back as much as you do in the front..
disc brakes are alot better the drum brakes, otherwise they wouldnt have put them on high end cars with great safety standards..
the materials being produced for disc are of higher quality and cost more money to produced..
besides.. 70-80% of your braking is done with your front brakes.. thats why manufactures mix match.. you dont awesome brakes in the back as much as you do in the front..
disc brakes are alot better the drum brakes, otherwise they wouldnt have put them on high end cars with great safety standards..
01-11-2007, 01:33 AM
#23
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01-11-2007, 09:47 PM
#24
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Originally Posted by ogerdgonz
Well if Expeditions have 4 wheel disc brakes now doesn't that say something about how well drums work?
http://www.allheadlinenews.com/articles/7006036506
<--me
01-12-2007, 05:50 PM
#27
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Originally Posted by dgHotLava
Originally Posted by ogerdgonz
Well if Expeditions have 4 wheel disc brakes now doesn't that say something about how well drums work?
and how the market pressure is forcing unsafe production decisions.
and for the race cars...did you ever see what their brakes are made of...not the typical steel rotors...they have cooling systems for the brakes...they will toss out the parts after a race...if you tried to do what race cars do...your brakes would glaze over, the pads would catch fire and you would crash from system failure.
i am not saying disc brakes don't work. i am saying that drums are getting a bad rap. they are a very solid and efficent system.
you can have a larger swept area with drums. they perform just as well (if not better) in most conditions. the only reason i am hearing on why they should be changed is they look ugly.
Discs are being used in the rear because they are lighter than drums, save weight improve fleet mpg and performance. They are also safer for the type of driving we normally do. Especially in wet weather. Disc braked dry out much faster than drums and when drums are wet they do not stop as well.
So they are being used for weight reduction and safety.
01-12-2007, 06:18 PM
#28
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[quote="ogerdgonz"]
Discs are being used in the rear because they are lighter than drums,
i would have thought a rotor and a caliper would weigh more than a drum assembly. any body have access to weight data?
Originally Posted by dgHotLava
Originally Posted by ogerdgonz
Well if Expeditions have 4 wheel disc brakes now doesn't that say something about how well drums work?
01-12-2007, 08:13 PM
#29
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its not about total weight
it is about rotational weight, the caliper and pads( or shoes/springs) do not rotate-they are static
only the disc/drum has to rotate @ wheel speed
most discs are lighter than most drums
it is about rotational weight, the caliper and pads( or shoes/springs) do not rotate-they are static
only the disc/drum has to rotate @ wheel speed
most discs are lighter than most drums
01-12-2007, 08:17 PM
#30
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Originally Posted by TXboxdriver
that's the one i was looking for! good find...
01-12-2007, 08:18 PM
#31
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[quote="boxerinabox"]
Discs are being used in the rear because they are lighter than drums,
i would have thought a rotor and a caliper would weigh more than a drum assembly. any body have access to weight data?
A rotor is thicker than a caliper and solid. So it has more area and should be lighter.
Originally Posted by ogerdgonz
Originally Posted by dgHotLava
Originally Posted by ogerdgonz
Well if Expeditions have 4 wheel disc brakes now doesn't that say something about how well drums work?
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