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Dean · 2007-06-12, 06:11 PM

I finally found a mostly useful diagram and formulas...

If you swap the words input and output, you have the outside ring as the input, one of the outputs is the shaft driven by the arm on the planetary and the last output the shaft on the sun gear. by varying the diameter of the sun and planet gear I believe is how you set the torque split in an open condition. Subaru then effectively adds a clutch between the two output shafts which as it is engaged, the two shafts are forced to rotate at more and more similar speed until lock up at which point all gears are fixed and shafts are rotating at the same speed and effective torque split is 50/50.

The clutch could just as easily be between the input and either of the outputs and have the same effect I believe, but it is more difficult to visualize I think.

2007-06-12, 06:11 PM	#29
Dean Señor Cheap Bastarde Real Name: Dean Join Date: May 2003 Location: $99 Tire Store Posts: 9,294 Car: $.04 STI Class: Fast,Cheap & Reliable=STI Deal, did somebody say Deal? Oh, Dean, yeah that's me.	I finally found a mostly useful diagram and formulas... If you swap the words input and output, you have the outside ring as the input, one of the outputs is the shaft driven by the arm on the planetary and the last output the shaft on the sun gear. by varying the diameter of the sun and planet gear I believe is how you set the torque split in an open condition. Subaru then effectively adds a clutch between the two output shafts which as it is engaged, the two shafts are forced to rotate at more and more similar speed until lock up at which point all gears are fixed and shafts are rotating at the same speed and effective torque split is 50/50. The clutch could just as easily be between the input and either of the outputs and have the same effect I believe, but it is more difficult to visualize I think. __________________ I am a Commodore PET --- Now get off my lawn you kids...