We are going to the track this week. wanted to get some of your guys thoughts on my shift points with my power band
I can rev this motor to 11,000rpms no problem so i can keep her in spool

I have a 05 5 speed with a evo 9 first gear if that helps


http://www.youtube.com/watch?v=rMTo_y6Yihk


Also have a hand brake which will let me wind her up out of the hole

 

looking at the dyno sheet your power falls after 9k so i would say shift at 9k.

 

10,400rpms IMO. Naturally you don't want to shift when your powerband just starts falling off. Need to find the good average power shift point to where you end up in the next gear.

 

I say about 10250-10500 so you fall back into a beefier part of your powerband....

Cheers and good luck!!

-E

 

I was thinking 10,500rpms and power shift her so i only fall back to 9000rpms

 

Exactly my thinking

 

have you ever calculated thrust curves?

you basically multiply out your torque by each gear, all on the same graph. that way you can see where the applied torque crosses from gear to gear. you generally want to stay in the lowest gear possible depending on how drastically it falls off.

in general people get tripped up, by the fact that power is plateauing, but never account for the fact that gearing almost always makes a bigger difference than the power curve. so unless you have some crazy torque dropoff (which you don't) you want to wind out each gear

edit: the X axis is usually MPH.

 

Dammit, I did a typo... I meant to say 10250-10500

 

I was gonna say Now your previous post makes more sense.

 

ok maybe i was wrong...lol.

 

9800 and let it hit peak torque on shift.

 

Good luck trying to watch the tach when that thing is in full boil.

 

when are you planning to hit the track.. i am in suspense here!!

 

I don't think you will have time to think about shifting or barely even looking at the tach... I go by the sound the car is making and how the car is reacting

 

You know your stuff.....must people just look at the torque curve and forget about torque multiplication. Ideally you want to run the lowest gear until there is a deep drop......in this particular case 10500 would be perfect at least for the first two gears......third gear you might want to power shift at 10200 and let 4 take you to promise land.