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Backyard grassers must have come to the sale.
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<blockquote data-quote="Rmc" data-source="post: 1849662" data-attributes="member: 39072"><p>Actually the opposite is true thicker rotors hold temperature longer then thinner rotors . That's why high performance and some after marker rotors have groves cut in them. To reduce overall metal mass and increase air flow around and in the rotor to reduce heat build up since air dissipates heat far better then metal.</p><p>Go measure the brake calipers on the rear of a 2015 or later 3/4 ton or bigger truck. They are larger than those on a pre 2005 pickup. When factory tires on most pickups changed to 17 inch I believe around 2007-8 many were pissed because that meant the could no longer use their takeoffs on their farm equipment and trailers and many tried to revert to 16 inch stock wheels . It is not and wasn't possible. Why ? Because 16 inch wheels won't fit over the rear calipers.</p><p>While thermal capacity is one consideration taken into account for calculating stopping force it is not the primary factor.</p><p>The primary factor is the coefficient of friction.</p><p>Federal law mandates that vehicles must come to a stop from a certain speed in a certain distance.</p><p>Larger pistons within the caliper are one way of increasing the friction applied to the rotor from the brake pad to provide the needed force to stop the vehicle within the required distance.</p><p>Another push to rear disc brakes was the federal mandates of four wheel abs.</p><p>Abs is possible with front disc rear drum. But it was difficult if not impossible for most manufacturers to meet the requirements with rear drum brakes and it be financially viable!</p></blockquote><p></p>
[QUOTE="Rmc, post: 1849662, member: 39072"] Actually the opposite is true thicker rotors hold temperature longer then thinner rotors . That's why high performance and some after marker rotors have groves cut in them. To reduce overall metal mass and increase air flow around and in the rotor to reduce heat build up since air dissipates heat far better then metal. Go measure the brake calipers on the rear of a 2015 or later 3/4 ton or bigger truck. They are larger than those on a pre 2005 pickup. When factory tires on most pickups changed to 17 inch I believe around 2007-8 many were pissed because that meant the could no longer use their takeoffs on their farm equipment and trailers and many tried to revert to 16 inch stock wheels . It is not and wasn't possible. Why ? Because 16 inch wheels won't fit over the rear calipers. While thermal capacity is one consideration taken into account for calculating stopping force it is not the primary factor. The primary factor is the coefficient of friction. Federal law mandates that vehicles must come to a stop from a certain speed in a certain distance. Larger pistons within the caliper are one way of increasing the friction applied to the rotor from the brake pad to provide the needed force to stop the vehicle within the required distance. Another push to rear disc brakes was the federal mandates of four wheel abs. Abs is possible with front disc rear drum. But it was difficult if not impossible for most manufacturers to meet the requirements with rear drum brakes and it be financially viable! [/QUOTE]
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Backyard grassers must have come to the sale.
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