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The new rotors arrived and to my surprise they were steel (not ductile cast iron) and about ½” larger in diameter (see 3-New Rotor) with the same rim bolt pattern. Note- if you have the old rotors they are the same size as the rims, the new ones stick up about ½” above the rim. 2008-03-19 15:54:35 by Jim Agnew
The new rotors arrived and to my surprise they were steel (not ductile cast iron) and about ½” larger in diameter (see 3-New Rotor) with the same rim bolt pattern. Note- if you have the old rotors they are the same size as the rims, the new ones stick up about ½” above the rim.
1-Old Rotor.jpg 2008-03-18 10:00:50 by Jim Agnew
1-Old Rotor.jpg
6-Slotted Rotor Outside.JPG 2008-03-18 09:34:24 by Jim Agnew
6-Slotted Rotor Outside.JPG
Preliminary results with a new set of your pads (after brake-in) show a very even pad wear path, smoother steering (differential braking), and during high speed (70 kt) braking (two stops back to back) with little fade I still had adequate braking for steering and taxi. Using a laser optical IR pyrometer showed reasonable pad & disk temperatures. 2008-03-18 09:33:50 by Jim Agnew
Preliminary results with a new set of your pads (after brake-in) show a very even pad wear path, smoother steering (differential braking), and during high speed (70 kt) braking (two stops back to back) with little fade I still had adequate braking for steering and taxi. Using a laser optical IR pyrometer showed reasonable pad & disk temperatures.
I decided to start with slotting the rotors and sent them to Amos’s machinist for slotting. (See photos 4-New Slotted Rotor Inside, 5-Slotting Close-up, and 6-Slotted Rotor Outside) They received three slots, 45 degrees to the pad path and 120 degrees apart and slightly wider than the actual pad path to minimize material removal. The opposite side slots are offset 60 degrees from the other side. The slots are 1/8” wide and 0.025” deep and their wiping action allows the liquid and gas to vent from the area between the pad and rotor thus increasing friction and assisting cooling. The slots also act as rotor wear indicator and when they are gone the rotors are at minimum specs. 2008-03-18 09:33:11 by Jim Agnew
I decided to start with slotting the rotors and sent them to Amos’s machinist for slotting. (See photos 4-New Slotted Rotor Inside, 5-Slotting Close-up, and 6-Slotted Rotor Outside) They received three slots, 45 degrees to the pad path and 120 degrees apart and slightly wider than the actual pad path to minimize material removal. The opposite side slots are offset 60 degrees from the other side. The slots are 1/8” wide and 0.025” deep and their wiping action allows the liquid and gas to vent from the area between the pad and rotor thus increasing friction and assisting cooling. The slots also act as rotor wear indicator and when they are gone the rotors are at minimum specs.
MAT Top View.JPG 2008-01-30 20:31:42 by Jim Agnew
MAT Top View.JPG
MAT Side View.JPG 2008-01-30 20:31:09 by Jim Agnew
MAT Side View.JPG
MAT Bottom View.JPG 2008-01-30 20:30:24 by Jim Agnew
MAT Bottom View.JPG

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