But with plenty of torque who needs to use all 6 gears anyhow ?
Exactly … If you have supercharger instant torque at almost any rpm you want taller gears to take advantage of that torque…
Tall gears affect a big turbo engine since a turbo needs the rpms to spool up, you don’t have this issue with a supercharger…
A proper supercharged engine has a flat torque line not some peaky Audi turbo torque curve… Short gears are there to keep you in the power when it’s only between a short 3,000 power window.
I’d put my car up against any short geared Exige and smoke it…
Short gears are the perfect choice when that’s all you have to sell…
[quote=frank]I’d put my car up against any short geared Exige and smoke it…
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Next week any good for you…?
Come on over anytime…
Damn, I was hoping your engine was still out…gets coat
Engine was not out but the Exige body is off and in the trash…
There is a reason why F1 teams pick 7th gear as the vmax for the track and then space the gears backwards, and there is a reason why they are 7 speed.
In Franks world they would be 5 speed and have a vmax 20mph over what is possible given the drag and HP
Hell I could use taller gears since the engine can pull 9,000 rpm in 5th…
Why on earth would I want to be constantly spinning my tires on corner exit with short gears that only break when pushed…
Gearing is all about the torque curve if you have an engine with it’s peak torque at 14,000 then it needs to be geared to max out at 15,000 for each gear.
F1 teams are governed by rules and anything that is faster is banned… Allow teams to run whatever they like and then it would be fun…
Now that’s for NA, with the supercharged engine having a flat torque line from 3,500 to 8,500 why the hell don’t you use all that rpm range to play with…
So what does 9k rpm equate to in speed in 5th then Frank?
Oh just 193 mph :whistle:
Sorry Frank, dont agree!
If anything I would say the opposite is true. A turbo likes big gear to push against and you obviously get lag during a gear change, as the boost is released and must build again, so the less gear changes the better.
Show me ONE motorsport car that uses longer gears than are required. And by required, I mean max revs at the end of the longest straight.
[quote=SeanB]Sorry Frank, dont agree!
If anything I would say the opposite is true. A turbo likes big gear to push against and you obviously get lag during a gear change, as the boost is released and must build again, so the less gear changes the better.
Show me ONE motorsport car that uses longer gears than are required. And by required, I mean max revs at the end of the longest straight.
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Say what ?
I’m saying you want “less” gear changing not more that you will get with a close ratio box. Since these guys are runing a supercharger that makes boost instantly you can take better advantage of the flat boost curve. Short ratios and power get you nothing but wheel spin… Tall gears on a turbo alone setup suck if you drop out of boost. Superchargers and compound chargers never drop out of boost, they can use the entire rpm band from 2500-9000 unlike a turbo alone…
Sure motorsports cars have their gearing set for the track they are runing and they are also limited to how much power allowed… When there are no power limits you run all that you can handle and when it’s just a track day you run it all since their are no rules slowing you down…
Too little power and you wind up shifting all day , too much power and you pass everyone… 
Unless running a sequential I’d say less gearchanges may also be beneficial…
Personally I wouldnt mind having too tall top gears as these would make touring more pleasant.
As long as the motor can be kept in the torque range on track ( which is easy with sc) then I see no disadvantage in taller gears …
After all we,re not racing ,just after a reliable solution to what we have .