Originally Posted by Tek Nickal
Whats the reason to get the internal drive ratio as close to 1:1 as possible? Isn't what the final drive ratio what matters?
Lets say I'm going for a 5.0 FDR, and I have a car with a 1:1 internal drive ratio. To get that I would need something like a 100t spur and a 20t pinion.
100/20x1 = 5.
Whats the difference if I got that same ratio with an internal drive ratio of 2.25? I would use instead a 100t spur and a 45t pinion.
100/45x2.25 = 5.
You would notice the different, but ofcourse you will not get to a 1:1...but there is one kit that I can think of that had 1:1 the Corally Assassin....it was very strong in the Stock.
FDR and IR are two completely different things....IR will determine how much more quicker or faster the kit will be with Eff% with the Motor...Sorry if this
does not clear thing up.
But real quick you can gear an Xray and a 415 at the same FDR (5).....yet they will not accelerate the same....because of the IR eff%
. Yes this is "marginal"....not eye poping nor mouth dropping
. But I know the difference between my MRE performance and my MY07 on the same FDR. The MY07 is faster But with the conversion its hard to tell them apart. Other than the Cornering speed....the MEDUSA pulls away.
To be honest its not worth the change. It really come down to trigger control....Slow in fast out. If you find yourself dancing and pumping on the trigger you can hang it up.