Not enough weight and/or rear springs too hard?
I might but MCA are not a big believer it seems. The theory that the correct shocks and springs should mean that you don't need one...... We'll have to see.
With the wheels aligned it drives so much better, done 80km into Brisbane and back today. The ride is bouncy and if you run over a dropped man hole or similar the back doesn't like it. The front is happy.
Need to find somewhere with really tight corners, out on the open road the speed involved in testing the limits wouldn't be funny
Not enough weight and/or rear springs too hard?
08 9n3 Polo GTI
Mods: heaps
I think it's a great theory for offroading and dirt rallying but the spring rates needed to control the roll would be hard to live with on tarmac. But it will be interesting to see.
What front anti-roll bar are you running? (I'd be astonished if they could fit springs heavy enough there to cope without one)
Resident grumpy old fart
VW - Metallic Paint, Radial Tyres, Laminated Windscreen, Electric Windows, VW Alloy Wheels, Variable Geometry Exhaust Driven Supercharger, Direct Unit Fuel Injection, Adiabatic Ignition, MacPherson Struts front, Torsion Beam rear, Coil Springs, Hydraulic Dampers, Front Anti-Roll Bar, Disc Brakes, Bosch ECU, ABS
Were you running the stock front bar before?
I keep telling people greater roll stiffness reduces grip but a lot find it hard to accept. It would be interesting to see if the softer rear springs induce understeer
Resident grumpy old fart
VW - Metallic Paint, Radial Tyres, Laminated Windscreen, Electric Windows, VW Alloy Wheels, Variable Geometry Exhaust Driven Supercharger, Direct Unit Fuel Injection, Adiabatic Ignition, MacPherson Struts front, Torsion Beam rear, Coil Springs, Hydraulic Dampers, Front Anti-Roll Bar, Disc Brakes, Bosch ECU, ABS
Me? I've been telling everyone that the Polo doesn't need a rear anti-roll bar if they have the stock front. I added a rear only when I added a stiffer front because the car was lifting the inside wheels on some turns (still does, I've been told).
But if the rear is skipping about over bumps due to the spring rate, then the balance can be maintained by reducing the spring rate and using an appropriate rear anti-roll bar to maintain the relative roll stiffnesses.
Resident grumpy old fart
VW - Metallic Paint, Radial Tyres, Laminated Windscreen, Electric Windows, VW Alloy Wheels, Variable Geometry Exhaust Driven Supercharger, Direct Unit Fuel Injection, Adiabatic Ignition, MacPherson Struts front, Torsion Beam rear, Coil Springs, Hydraulic Dampers, Front Anti-Roll Bar, Disc Brakes, Bosch ECU, ABS
If you have adjustable rebound or dampening, could softening the rear a tad. It sounds like the common set-up for a performance oriented FWD, but will make it pretty ordinary to drive down the street. I had been warned of that trade off when speaking with MCA and Accurate Suspension about my car and preferred set-up. It's all a sacifice of one thing versus the other. I didn't drop full camber on mine as I'd still like to run it on the street, in reality the difference is probably marginal. The car will also likely tramline quite a lot more with those alignment settings, particularly at speed, though makes it like a dart on the track.
A race track is about the only location you will be able to truly explore the set-up and balance. We can swap cars at some point so you can have a run in mine.
Track Car: 06 Polo GTI Red Devil mkII
Daily: 2010 VW Jetta Highline
Gone but not forgotten: 08 Polo GTI
** All information I provide is probably incorrect until validated by someone else **
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