cwoods34

iTrader: (10)

But there's a point where so much weight-generated grip on the outside tire causes the inner tire to lose efficiency, so OVERALL you lose grip. Correct?

CristianTabush

iTrader: (13)

To get to that point, your car probably has to be close to being out of control, because we are talking about the extreme points of the curve.

Just do a simple experiment. Make your car wider in the front, even if it is just with wheel spacers. Then make your car narrower. Note the difference in handling.

cwoods34

iTrader: (10)

My car is always EXTREME. Case closed.

In all seriousness, I learned a few things, so the evening was productive!

CristianTabush

iTrader: (13)

Hehehe. Too funny. It's always good to have discussions like these on the thread. Always makes for a good read for everyone and I know it helps me brush up on set-up theory.

Brian McGreevy

iTrader: (10)

Yes, you can exceed the tire's capability, but almost never from weight transfer alone. Usually what causes decreased grip from too much weight transfer is too much instantaneous slip angle. The way to prevent that is controlling the weight transfer rate, not necessarily the amount of weight transfer. I love to talk to people who say they want to take grip out of the car in high bite. That is crazy - you want as much grip as you can at all times. What people typically mean and don't realize is that they want to tune the car such that weight transfer is controlled properly and the resulting tire forces maximize the friction circle (right picture). In high bite this usually means slowing it down and ensuring the best contact patch is there such that you don't get traction spikes that can either scrub speed or cause traction rolling.

Almost all tires behave similar to the first picture here, though the rate of drop off past peak grip can be more or less severe.

CristianTabush

iTrader: (13)

Good stuff Brian!

Thanks for dropping your knowledge.

CristianTabush

iTrader: (13)

RSDX005 RSD 12mm Hex Hub Spacers 0.5, 1.0, 1.5 2.0 mm thicknesses

dorkmissle

iTrader: (29)

Wow, you guys went nuts in here!

Good stuff!

I want to try it now, but with the arms moved in 1.5mm per side. This way I can just use the A shock hole I believe to maintain same spring rate I think.

What about the increased camber gain?

I understand more weight transfer on narrower car. Makes sense if you think of your a arm as a lever. If the tire is further out on the lever it would take less weight (or really force) to move it the same distance compared to if it was further towards the hinge point on the lever.

So in high grip situations, wider is better (like the old pontiac commercial).

Need grip? Narrow it up a bit at all four.

dorkmissle

iTrader: (29)

Oh and forgot to mention, wheel spacers look nice.

I need those, ball studs and another set of springs.....

bjanzen

iTrader: (6)

trying to understand your upper link setup....... someone mind clarifying??

thanks, Barry

bjanzen

iTrader: (6)

oh... to clarify. I have looked over the posted jpeg on page 38. Just can't understand how and where the upper links are mounted. I know some RSD ball ends are used. Just not sure if some custom shock mounting locations are used. The setup sheet is not clear there...... I see a little + mark and cant read the whole thing. Maybe someone can help? I know this is probably the RSD Vertical Shock tower mounts..... just not understanding......

Thanks,

Barry

dorkmissle

iTrader: (29)

Barry, It is the inner ball mounting position on the RSD shock tower.

It allows you to fine tune roll center adjustment almost infintiely fine with the use of shims.


See attached pic, the inside hole is the added material shown with an arrow. This is a great upgrade for the car along with the springs and pistons.

cwoods34

iTrader: (10)

Used the new short ballstuds front and rear on my car (long front link, short rear link) and took TQ and the 17.5 A-main win at our annual New Year's race yesterday. Thanks Reflex!!!

burgboyz

iTrader: (70)

Great info in here!

briankstan

iTrader: (8)

Finally got to run my car after installing all my reflex goodies. I swapped out the shock disks and bladders, along with tuning with the reflex springs. I also installed the fan mount with a 25mm fan to keep everything cool.

Car was planted and fast. Kudos to Cristian and Reflex for the great TC6 products.