RichMR2 and Vinny,
I don't want to highjack Bloozes thread, so let's keep these questions in my suspension thread from now on,.....unless Blooze doesn't mind them being here.
I'll answer this here for now though, just this once.....
feuerdog – could you help me understand your calculations please?
Step1.1.b - Determine an initial final drive setting by dividing weight by peak HP, and using the table
Step 1.2.a - Set initial gear settings dependant on transmission size using the table
Step 1.3.a - Adjust the direct drive gear as detailed
Step 2 - Finalise the final drive settings as detailed
Step 3 - Finalise 1st gear settings as detailed
Step 4 - Find the gear spread multiplier as detailed
Now this is the part I’m having trouble with:
Step 5 - Tune the remaining gears as detailed
Does this mean that I have to re-adjust every gear apart from the final drive and 1st gear (which I’ve already finalised)?
Yes,.....you have to readjust every gear again, except the overdrive, because you haven't actually finalized them, you have merely established a basis for further calculations.
Haven’t I already adjusted the direct drive gear back in step 1.3.a?
No, this is just a starting point to avoid irregular gearing.
A bit of feedback in this as I tried it last night (not directly in response to Vinny but this seemed a better place than in the suspension calcs thread). My Class D Fairlady Z (lightened, added grip, stock HP) only got up to the top end of 4th, could not check out 5th or 6th... as if the car didn't have the power to push at direct ratios and deffinatly not at overdrive ones. I know it isn't perfect, I know it needs tweeking for all cars, Im not asking for help Im supplying a little feedback on what I found hoping that it may help... so no responce necessary really.
I'll investigate this, put it sounds like something isn't right. Every vcar in the game can push a .84 overdrive with the right FD setting. I suspect you FD wasn't set right initially during high speed testing. Off the top of my head, your FD should be around 3.8 to 4.0 and that will be more than enough gearing to push a .84 OD.
FM3 Suspension Calculator
http://forums.forzamotorsport.net/forums/thread/3073197.aspxiPHONE Calculator
http://forzatune.com/DROID Calculator
http://blog.synformation.com/2010/01/13/forzadroid