Car with scraping noise on the first turn of the Bernese Alps Festival, any ideas? Thanks!

UPDATE - just tested changing the rebound and bump setting, yet, same results (meaning the noise is still there). Here is what I did…from my initial rebound/bump settings (Rebound F10.1 R9.0 Bump F2.1 R1.8, basically rebound set at 83% and weight offset front/rear of 53%). I started reducing the rebound percent from 83% in 5% decrements and tested each setting. I went all the way down to rebound being set at 40% (R 4.9/4.3, B 7.3/6.5) and same result. The total Reb+Bump was maintained constant at 23.

If anyone wants to give it a shot all the settings are posted above. Thanks!

Yes, changing spring rate would help, in this case I think it needs to be increased.

Low spring rate = slow response vehicle or more appropriate for comfort cruising.
Higher spring rate = faster response or more appropriate for racing.

Therefore there’re infinite variations; choose one that suits your driving. Balancing the front/rear spring rates is MUCH more important.

Interesting point on the Higher Spring Rate equates to racing! All I have read in the forum (to gain speed) has been to lower spring rates as much as possible w/o causing other issues. For example…always lowering FM5 default spring rates by X% (~25 or so). I’ll work on both the increased spring rates, and, the balancing of these (F/R).

Thanks GRD!

Well, stiffer and softer is very very subjective. Softer does not mean marshmallow soft and stiffer does not mean rock hard.

In tuning, softer/stiffer means softer/stiffer than the “normal”. Finding this NORM is the trick. So, to put it into a scale . . .

Comfort . . . . Sporty . . . . Sport . . . . Race . . . . Race+Aero
Soft - - - - - - - - - - - - - - - - -My Tune - - - - - -Stiff

If my tune is somewhere between Sport & Race, then a “softer” suspension would be close to where “M” of My Tune and a stiffer suspension would be close to the “e” of My Tune. That’s the meaning of softer and stiffer; softer or stiffer than the norm. Going fully soft into the “Comfort” range, would NOT be adviseable at all. If the suspension is too soft, the car would be trading off handling and if the suspension is to stiff, the car would be trading off grip for fast response.

Going to any extreme would be ill advised; the sweet spot is seldom in the extremes.

Do you have an idea as to where the FM5 default zone of this scale lies? So, basically I will have to first figure out the “normal”, to then, asses where to tweak from there. I’ll see what I can test out.

As an example, for my BRZ I went pretty low and finally got a very good time at the Oval, though this obviously will not translate to other cars & tracks. So in that case it was OK (I guess!).

That’s what all the calculators are trying to come up with . . .

So by feel! Will keep testing. Thanks!

GRD – I wanted to make sure you also saw my post on this thread that the stock car has the noise as well!

I will have to try it myself!

Yeah, just grab the stock car and head to the Alps…Let me know if you figure something out. Thx!

The Audi had a couple of pecularities: a manual centre differential lock, and an engine mounted ahead of the front axle. Perhaps one or other of these might explain the odd behaviour in-game?

Thanks WearyMick…I liked the car yet do not have a lot of background information on it. Good to know.

PRKid

Well, filled with curiosity I drove the car and after about 10 seconds it was obvious what you were talking about. I then checked the original post in the anticipation that it had been made on April 1. It’s the TURBO. Listen here and here. Every time you lift off the throttle it clatters, wheezes, whistles, whines, scrapes, bangs and huffs like a particularly large vacuum cleaner choking on a golf ball. Only louder. It’s positively raucous. Heavens above man!

Thanks for researching and sharing this Mick, these were great to watch. Now, on the 1st video the people around the tracks are CRAZY! From 1st video it seems it might be a pretty good Drifting car, I’ll have to check that out later.

On the 2nd video, I could clearly hear the noise(s) I was hearing and drove me crazy the last 3 weeks. Now, I better understand. No wonder the stock car was the same…I am glad it was not my tune, lol.

What an entertaining description! I have yet to try this car out but if it is indeed the turbo that would be a hoot! So then this noise should occur at every heavy braking zone: 1st corner, bottom of the crest, and maybe entry into the last corner?

OK, since we (I mean WearyMick) figured this noise problem out…I do have another thread with some more noises on the 1995 Mitsubishi Eclipse (http://forums.forza.net/turn10_postst13615_1995-Mitsubishi-Eclipse-experiencing-3-noises-during-Oval-turns-or-right-after-exit-of-turn--1.aspx). That car has a Port Turbo, yet, for sure it is not the Turbo since I can get rid of the noise when both F/R ride heights are at max. Check it out and let me know if you have any ideas. Thanks!