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I'm still trying to figure out the optimum way to launch without killing something. The stuff I found from my search says that you can dump at 2500 RPM's and kill your spider gears, or slip from 5k RPM and kill your clutch, or drop at 3500 RPM and kill your differential. Now I know nothing about how an MTX works, or what spider gears are, but if I'm gonna race, I want the best launch and if it's going to break something someday, I'd rather it be the cheapest and easiest thing to replace.
From what I've read, the 2500 RPM dump is the safest. So how should i launch?
1996 Contour SE Red V6 MTX 1995 Contour LX Champaign V6 ATX (my wife's beater) SuperChip | KKM Intake | Ford Motorsport 9mm Wires | Bosch +4's | Mobil 1 | No Resonator | Knauberized Doors | JSP Custom Wing | Re-wired Fogs | Red Painted Calipers | 98+ Sail Panels | Vuncannon Alarm | Lighted Moonroof Switch | Pioneer Head-unit | Pioneer 6x8's
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Spiders gears are the gears INSIDE the differential, on "open" differentials, as installed in most vehicles, including the Contour. Usually if you break a spider gear it'll cause a jam in the diff case thus causing it to explode, so it's a chain effect.
LSD's like the Quiafe do not use gears inside the case, just clutch plates, so in essence they are NOT "real differentials" as it cannot bias the torque from one side to the other, it actually just forces a 50-50 split of the torque to both wheels, and can force up to 80% of the torque to one wheel in loss traction situations.
Regards, Anastazi Father of the Aussie Bar anastazi.sarigiannis@aam.com"Computer games don't affect kids. I mean if Pacman affected us as kids, we'd all run around in a darkened room, munching pills and listening to repetitive music." ----------------------------------- 2000 Silver Frost SVT #1126 of 2150 8" AFE/"Big-Mouth" Intake, Modified BAT Pipe, IAT Mod - A'PEXi S-AFC, Superchip, No Secondaries, Cobra/CSVT Hybrid MAF, Magnaflow True Duals, MYSTERY Mod, Autolite AWSF22FS's and FMS Wires, ES MM Inserts, Cross Drilled/Slotted Rotors w/ Greenstuffs, APR DTM Spoiler, Escort Cossie Vents, NACA Duct, Mirko Splitter, Koni's & H&R Springs, 24mm "Aussie" Sway Bar, 18" Enkei RS-5, 225/40R18 KDW-2's. Pioneer DEH-P7000R, TS-6975's, TS-6855's, MTX BE104, MTX Blue Thunder PRO502 http://www.geocities.com/qikslvrsvt
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great info Aussie, thanks. Now I think I got it. So essentailly, since the stock differentials suck so bad, and a quaife would rock my world, I shouldn't worry about recking it because a quaife would be the way to go anyway and that would be the excuse I need to buy one, right? I just got a PM from Terry, and it sounds like the LSD would be housed inside the transmission housing? I was under the impression the LSD is mounted near the wheels, but seperate from the tranny. I must be misunderstanding how this works... 
1996 Contour SE Red V6 MTX 1995 Contour LX Champaign V6 ATX (my wife's beater) SuperChip | KKM Intake | Ford Motorsport 9mm Wires | Bosch +4's | Mobil 1 | No Resonator | Knauberized Doors | JSP Custom Wing | Re-wired Fogs | Red Painted Calipers | 98+ Sail Panels | Vuncannon Alarm | Lighted Moonroof Switch | Pioneer Head-unit | Pioneer 6x8's
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Actually the quaife does use gears, not clutches. It uses a gearing system that basically drives the gears into the housing of the diff to "lock" the differential. The housing is made out of billet steel to give longevity and assure that it will not "grenade". Here is a pic of how the Quaife works:  More info on the Quaife can be found on their homepage: Quaife
Ryan
Latest Mod: Mirko Splitter
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My bad, I thought iwas a clutch-plate diff, not a helical diff like you have clarified. Essentially it uses friction once again to jam the helical gears into the case. This occurs when the diff "senses" the wheel differentiating, as the spinning gears have a separation force that cause them to move outward and into the case.
Regards, Anastazi Father of the Aussie Bar anastazi.sarigiannis@aam.com"Computer games don't affect kids. I mean if Pacman affected us as kids, we'd all run around in a darkened room, munching pills and listening to repetitive music." ----------------------------------- 2000 Silver Frost SVT #1126 of 2150 8" AFE/"Big-Mouth" Intake, Modified BAT Pipe, IAT Mod - A'PEXi S-AFC, Superchip, No Secondaries, Cobra/CSVT Hybrid MAF, Magnaflow True Duals, MYSTERY Mod, Autolite AWSF22FS's and FMS Wires, ES MM Inserts, Cross Drilled/Slotted Rotors w/ Greenstuffs, APR DTM Spoiler, Escort Cossie Vents, NACA Duct, Mirko Splitter, Koni's & H&R Springs, 24mm "Aussie" Sway Bar, 18" Enkei RS-5, 225/40R18 KDW-2's. Pioneer DEH-P7000R, TS-6975's, TS-6855's, MTX BE104, MTX Blue Thunder PRO502 http://www.geocities.com/qikslvrsvt
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Here is a 3k rpm launch! 
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heres what wheelhop did to my stock differential. I had MANY very poor launches. Up near the end, almost every time i would launch with any speed i'd have mad wheel hop..  Luckily it didn't blow a whole in the side of my tranny case, but i still got a new tranny out of it. I've got a quaife now. It's nice 
~nick
2001 Cougar V6 MTX
KKM, C&L MAF, SVT TB, SVT UIM, SVT Injectors, B&M Short Shifter, Gutted Precats (yawn), Bassani Exhaust, SVT Front and rear Engine mounts, Energy Suspension engine mount inserts, Quaife Differential, Fidanza Flywheel, Grizzly Clutch. OMP Front STB, Custom Rear STB. Various cosmetic and stereo mods.
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Originally posted by L8 Apexing Aussie:
My bad, I thought iwas a clutch-plate diff, not a helical diff like you have clarified. Essentially it uses friction once again to jam the helical gears into the case. This occurs when the diff "senses" the wheel differentiating, as the spinning gears have a separation force that cause them to move outward and into the case. Well I figured I'd put some of the knowledge that I obtained at Terry Haines' tranny seminar to use  I highly recommend the CEG community take advantage of Terry's seminars, I learned more in two days than I could have ever imagined. Terry is considering holding a 3L conversion seminar and I will be there for sure, hopefully the rest of the CEG will show some interest to make this a reality!!!
Ryan
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crazy. I guess the quaife will have to be promoted to NEXT on my Mod-It list
1996 Contour SE Red V6 MTX 1995 Contour LX Champaign V6 ATX (my wife's beater) SuperChip | KKM Intake | Ford Motorsport 9mm Wires | Bosch +4's | Mobil 1 | No Resonator | Knauberized Doors | JSP Custom Wing | Re-wired Fogs | Red Painted Calipers | 98+ Sail Panels | Vuncannon Alarm | Lighted Moonroof Switch | Pioneer Head-unit | Pioneer 6x8's
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My bad, I thought iwas a clutch-plate diff, not a helical diff like you have clarified. Essentially it uses friction once again to jam the helical gears into the case. Clutch plate diffs use spider gears just like open diffs do. They just have clutches attached the axle gears. There really aren't any limited slip diffs that do not use some sort of gearing. A helical gear diff generates friction, as was said, by generating thrust forces which push the gears into the walls of the case. They don't actually move out and push into the case, as they have no where to go. But they are loaded up just the same and push against the case (they just were already in contact with it). BTW, wheel hop will kill a helical gear diff too, it just might take more of it to do it. The failure mode is different, but it can happen...
Rick Barnes
Zexel Torsen Inc
'66 Ranchero
'72 Yamaha R5C
'84 EXP Turbo Coupe
'88 Mazda 323GTX
'99 Contour SVT
'02 Ranger FX4
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