Jon Williams

iTrader: (5)

Dobbs' advice is good. Take it.

artwork

iTrader: (82)

So with all of the discussion about how to set droop, I decided to build a video on the method I use. Don't be too critical, but I hope this helps and explains the method clearly.

+ YouTube Video

PROMODVETTE

iTrader: (66)

Great video, learned a lot!

andrewdoherty

iTrader: (49)

Maybe try this. Just theory, and not proven, but it sounds accurate in my head?


Back droop screws way off the chassis
Set RH to 5 mm measured at the center rear of chassis
Set chassis on RH gauge at a value of 5mm + ORH mm.
Tighten droop screws until axles begin to move
Use droop blocks and gauge to even droop out side to side(should be minimal)

andrewdoherty

iTrader: (49)

OK, I tried that method IRL and wasn't terribly pleased with the repeatablity. The good news is I think I have a repeatable and very accurate (as accurate as the steps in your RH gauge at least. Mine was only .5 mm, but you can get the Hudy stepped gauge with .2 mm step accuracy) way of getting an ORH measurement. I can be overly analytic and I usually don't like settling for a "feel" type of measurement.

This doesn't require taking wheels off or using any thing more than a stepped RH gauge and flat surface. Let me see if I can get this across...


1.First off this is assuming properly functioning mechanics with a flat chassis. It will not be reliable if the shocks are not smooth, or there is a significant tweak.
2.Complete the following with the rear of the car facing you and near to the edge of your pit board closest to you.
3.Back droop screws away from chassis to ensure they are not effecting RH
4.Set RH to desired amount (5 mm lets say)
5.Slide stepped RH gauge under right rear corner of chassis so that chassis sits at RH + ORH value. (5 mm + 2 mm for this exercise)
6.Position car and gauge so car is on the pit board, but the thick 1/3 of the stepped RH gauge is hanging off the board (gauge is parallel with belts)
7.While watching the right rear shock shaft, just below the bottom of the shock body, gently lift up on the back edge of the RH gauge 1-2 mm. (Chassis will lift)
8. If the shock shaft stayed in the same position relative to the shock body and did not extend out any, you need to add droop.
9.If the shock shaft extended out at all you need to take away droop.
10.Repeat steps 7-9 until you are right at the point where the shaft just moves, but almost imperceptibly.(I had a light on the shaft and was down at eye level with the shock body/shaft junction)
11.Repeat this procedure with the gauge on the other edge of the chassis and looking at the left rear shock.


Someone else try this and see if you think this works? I don't always trust myself this late at night.

bucketboy

Nice vid artwort, thanks for taking the time

Bb

hanulec

iTrader: (28)

Very nice Art. Almost as good as a Groskamp video, seriously. I like that you made it happen instead of just talking about it...
One thing I'm shocked about is your ride height setting at 5m. Does your car pass checks at races? I usually say 5.5m is my lowest (unless its a asphalt race where rh isn't checked)..

rdlkgliders

iTrader: (21)

Artwork,
Nice job easy to understand and simple to do.

ChrisP

iTrader: (10)

I received an email indicating that the forum issues should now have been corrected.

narcotiks

iTrader: (8)

Hey everyone i need some setup help,
Im under steering on this particular corner, and feel like im lacking abit of corner speed throughout the whole track
on this track layout,

my current set up is here http://forum.teamxray.com/xform/inde...&setup=t3_2012

Thanks.

rdlkgliders

iTrader: (21)

where is your understeer entry? or exit? I am sure you have already tried it but how about adjusting the front rollcenter. If you are pushing on exit I would go down from 1.0 to .5 on my front tow out setting. otherwise play with spring and oil.

Skiddins

I would try 3000cSt oil in the diff, 2.8 rear springs or 2.6 fronts.

Those are the simplest things to try.

Skiddins

barnacle

iTrader: (9)

Drop the front roll center at the hinge pins and drop both diffs.

If u sill need more, drop to 1.2 front sway bar and remove ackermann shim from steering rack.

nerdling

iTrader: (8)

Interesting... I had a similar problem on the weekend. I went to a thicker rear bar +0.20mm and increased the amount of down travel on my rear suspension from 5mm to 4mm (the distance the arms move down).
This solved the problem for me.

Skiddins

Has anyone actually measured the values of the new progressive 2.2-2.6 rear springs?

I have a pair and they seemed ok for my first use (more testing required) but can't see how they are progressive as the coils all look the same etc.

Skiddins