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i got u stickied bro :yes:

Mega issue with internet since moved, issue its not working. I'm switching providers should be back and active soon

It's very good to do this setup exercise without confusing elements like gearbox. I think this way You will find best setup.

Some experiences from online races.
Track Big Willow, all real, no assistants, 450pp, min weight 1.220 kg, street cars:

The car is very competitive the way it is with Odes or Breads setup. There are some cars like Bmw M3 csl or Honda S2000, witch can cause some minor problems to You. If it against to Your nerve system to loose first place or You want to race to win, then I suggest two changes to eliminate head ache and to increase Your fun factor.
1) gearbox
2) sport computer
Those changes will increase Your speed max 1sec per lap and Your nerve system will love those changes.

Jouni

@Jouni, gearbox should be matched with setup, suspension and LSD, then car is really quick against normal podium cars.
Balance of final gear and actual gear should be in range what leaves LSD on full working range. Normal thing what I do when doing good transmission I fix gears on close to wanted lenght and fine tune rear traction by altering final gear.
So if car is understeering then just shortening final and it's turning in better, vise versa if oversteering.

Very intresting point of view. I didn't know that gearbox is affecting also understeer / oversteer / should be matched with lsd. Maybe You could tell more about adjusting gearbox.

This is what I do with gearbox, nothing else
1) tranny trick
2) final gear / top speed
3) max acceleration gear 1, 2, 3
4) fine tuning for the track ( specific corner / specific gear ; gear change / specific place )

There is one mystery part for me in gearbox: if I change tyres for example rs, why is this increasing speed before rev limiter compared tyres for example sport hard. I really don't understand, why this is happening.

Jouni

Personal opinion of tranny trick is useless. Same efficiency can be achieved from gearbox by just tuning it well, without making understeering car by gearbox.
Mostly I have encouraged understeer with tranny tricked gearbox, if it's is inst after actual tuning is done.
Also tranny tricked car is harder to tune well behaving car, coz of wicked final.

Had much more to write, but having difficulties with my phone keyboard..

Ps. Sinister can you do space on your mailbox.

@ Ode. Could You tell us, how You do Your gearbox setup. Do You have some kind of approach?

If tranny trick is causing understeer ( poison for me), I'm very interested. I haven't focused for gearbox in any way, I just do it how I described earlier.

It would also nice to know, how You are doing gear one. Do You allow wheel spin in the start?

Jouni

This is most likely due to tyre slippage. The speedometer in game does not operate like it does in real life, but instead shows the speed the chassis is moving at and not what the wheels are rotating at. You can see the difference in the data logger and check if this is what is causing the speed loss. I think you will find the stickier tyres slip less.

This is great stuff. Ode knows what he is talking about. I think that not everyone in the GT community realises how much the tranny can affect handling.

Brain dump:
I first noticed this when trying to drift crappy underpowered cars in GT5. Couldn't reliably maintain a drift as there was simply not enough torque at the rear axle (to overcome even CH tyres!!!) I could flick/brake/handbrake/whatever the car to initiate but not maintain the drift. I didn't want to add more power so just shortened the gear ratios. Taken in a less extreme situation i.e. racing not drifting, a shorter gearbox can help generate just a little more slip in the drive wheels, which for an FR loosens the rear up.

What I do (as well as generally tuning the box for accel and top speed) is have it so on most corners, or at least the most important corners, that if I apply 100% throttle I will *just* lose the back end. I do this because:

i) if I understeer for some reason, I can stamp the gas and slip the back end too, which brings me back on-course (four wheel drift lol!).
ii) I know that, with a little less throttle, I am using all of the tyres grip i.e. accelerating as much as I can. This is a bit like having strong enough brakes to lock the tyres. If your brakes leave some of the tyres grip spare, you;re not maximising your performance!
iii) WIth even less throttle, you get a gentle weight shift to the rear (due to acceleration) but the rear tyres aren't really slipping, this often gives a little understeer.

Something like 80% throttle = slight understeer, 90-95% = neutral, 100% = slight oversteer.

All this is while cornering with a lot of side G. In a straight line, the 100% is unlikely to spin the tyres (at least not in higher gears).

There may be faster ways... but what I love is when you get it set just right, so as you're exiting the corner you straighten the wheel a little too early, while applying the throttle, also a little too early. The straight wheel should mean you run wide but you just get a little extra steer from the throttle... and then bang, you're at 100% gas blasting down the next straight.

Short gearing also affects deceleration handling in a similar way. Changing down to say 2nd upon entry helps the back end get out. I think the drifters call it "shift lock", again in racing it's a gentler version.

Someone on GTP, in a transmission discussion, years ago, said something like "you know, the transmission isn't just for tuning acceleration and top speed ;-)". I don't know who it was, but that comment stuck in my memory. I think they were referring to the effect on handling.

Cheers,

Bread