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#16
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4eat vs 5/6 spd sticks
Quick question - food for thought...
How do the 5/6 spd sticks control 'torque split'? I don't remember reading about this in previous posts. Do the sticks have clutch packs like the 4eat? Or does it use a viscous diff? Does the 'torque split' vary? Does that give the 4eat an 'advantage' over the sticks? Just curious! Feedback? Thanks, mile-hi-bri |
#17
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Hi Brian, the standard WRX manual trannys use a standard 50:50 differential with a viscous coupler. If the viscous coupler detects a speed difference between the front and rear drivelines, then it more strongly couples the front and rear. The system is designed to try its best to maintain a 50:50 split while allowing some differential rpm in the front and rear drivelines.
The WRX STi 6MT has a center diff with a variable torque split. The torque split can be varied by a computer, or it can be manually controlled. I don't know for sure, but I imagine the diff also has a viscous coupler. My feeling is that the SVX 4eat has a more desireable power distribution scheme. I just would have preferred that the rear wheels be the ones that are always driven, and the torque to the front be variable. This is how its done on Skylines.
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Mychailo :: 2006 Silver Mitsubishi Evolution 9, E85, 34 psi peak, 425wtq/505whp DJ :: 1995 Laguna Blue SVX L AWD 5MT (sold) Visit my locker SVX Mods: ND iridium spark plugs, Impreza RS fpr, afr tuned to 13.2:1 using a custom MAF bypass, custom exhaust, WRX 5MT w/ STi RA 1st-4th gear & stock WRX 5th gear, Exedy 13 lb flywheel & Sport Clutch, STi Group N tranny & engine mounts, urethane spacers in rear subframe, rear diff mounts, and pitch stopper, SVX Sport Strut Springs (185f/150r), custom 19 mm rear swaybar, urethane swaybar mounts, Rota Torque 17x8", 225/45-17 Proxes 4 tires, Axxis Deluxe Plus organic brake pads. |
#18
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Andy ------------------------------------------------------------------------------------ If I would be a young man again and had to decide how to make my living, I would not try to become a scientist or scholar or teacher. I would rather choose to be a plumber or a peddler in the hope to find that modest degree of independence still available under present circumstances. -- Albert Einstein, The Reporter, November 18 1954 |
#19
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How a viscous coupling works:
http://auto.howstuffworks.com/differential7.htm Quite similar to a torque converter, actually...
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2005 RX-8 Grand Touring 2005 Outback 2002 Mercedes-Benz E320 wagon END OF LINE |
#20
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2020 Subaru Outback Touring - Wife's first Subaru 2005 Volvo V70R - 5-cylinder love! :Heart: ** SOLD **1998 Subaru Legacy 2.5GT Wagon - MOST RELIABLE car I've ever owned ** SOLD **2006Subaru WRXSTi (Former "Boxer4Racing.com / Continential Tire" STi) - Built EJ22t block / EJ207 JDM STi "big port heads" - 9,000rpm MONEY PIT!!! ** SOLD ** 1995 "Tree-Hugger Green" SVX L AWD(5 MT) --- "Gumby" 130K miles #399 in MY95, my original love... |
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