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North Coast Cab's Avatar
 
Join Date: Sep 2002
Location: Cleveland
Posts: 4,424
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Corner Entry - trail braking into turn-in. Rear end wants to come around a lot

Mid turn - transitioning to throttle, able to get to apex on fast turns, car rotates quickly in slow turns as the rear still wants to come around

Exit - back on throttle hard, car understeers and pushes to track out.

Bilstein Sports all around

I'll say my driving is not perfect, but I've been experimented with various entry speeds and driving changes and these symptoms are prevalent throughout. Similarily classed cars are killing me by carrying much more speed into the turns.

John

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Old 07-16-2006, 09:58 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #21 (permalink)
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Chuck Moreland's Avatar
 
Join Date: Apr 2002
Location: Santa Clara, CA
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Having the car balanced mid-turn in a high speed turn indicates your tbars/sways are balanced about right.

You should expect oversteer while trail braking. It's a matter of degree, try trail braking less or not at all.

Understeer with hard throttle = normal. The front end gets light. Again a matter of degree. If you have a limited slip that goes double.

It would be helpful if you list your alignment settings.
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Old 07-16-2006, 10:37 AM
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Join Date: Apr 2005
Location: Park City, UT
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John - everything except the understeer is standard for a 911 on track. Add some rear swaybar to help with corner exit understeer.

You don't seem to have much front camber - not the best way to go after a corner exit understeer problem but might help to get it up around -1.5 to -2.

Trail braking a 911 into many corners is the fastest way through the corner. You just need to get comfortable with that feeling of the rear end coming around a little. Let it rotate as you trail brake on the slower corners. Once you get on the throttle the rear will hunker down and all will be well.

Cheers,

Jeff

Quote:
Originally posted by North Coast Cab
Corner Entry - trail braking into turn-in. Rear end wants to come around a lot

Mid turn - transitioning to throttle, able to get to apex on fast turns, car rotates quickly in slow turns as the rear still wants to come around

Exit - back on throttle hard, car understeers and pushes to track out.

Bilstein Sports all around

I'll say my driving is not perfect, but I've been experimented with various entry speeds and driving changes and these symptoms are prevalent throughout. Similarily classed cars are killing me by carrying much more speed into the turns.

John

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Old 07-16-2006, 10:52 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #23 (permalink)
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