Best RPM to shift?
#31
03-17-2005, 04:54 PM
Originally Posted by red347
If you want to be a serious "bracket" racer, install a manual valve body with transbrake in the transmission. Then get the car on a Dyno, and find out where the car makes peak power and peak torque. Always launch 3-400 RPM short of peak torque (let it flash) and shift 200 RPM past peak power. Also install a rev limiter that holds the car at that RPM before you launch. If using a shift light, make sure you compensate for the delay in time, from the time you see the light, to when you react to the light, and when the car actually makes the shift, and set the light accordingly. At 5 or 6000 RPM you can be 500 RPM past your shift point during that time.
Ron
Ron
Adam
#32
03-17-2005, 07:36 PM
I utilize a Shifnoid tied to my Prog. Digital 7. Manual reverse pattern with T/B. I run it through an RTD so the 1st amber is my time to lift my thumb. Foot buried in carpet, and at the designated time she leaves. Going down track, all I hear is "click-click" and I cross the finish line. So far in S/Pro it has worked out well. Maybe because the setup is pretty standard for everyone in that class. Either air or electric shifters, cross overs,etc.
It runs hard..1.360 60's on a 10 inch tire. I once made 17 passes over a two week period and all within 9.70-9.80, so it worked for me.
Ron
It runs hard..1.360 60's on a 10 inch tire. I once made 17 passes over a two week period and all within 9.70-9.80, so it worked for me.
Ron
#33
03-19-2005, 07:41 PM
Originally Posted by red347
I utilize a Shifnoid tied to my Prog. Digital 7. Manual reverse pattern with T/B. I run it through an RTD so the 1st amber is my time to lift my thumb. Foot buried in carpet, and at the designated time she leaves. Going down track, all I hear is "click-click" and I cross the finish line. So far in S/Pro it has worked out well. Maybe because the setup is pretty standard for everyone in that class. Either air or electric shifters, cross overs,etc.
It runs hard..1.360 60's on a 10 inch tire. I once made 17 passes over a two week period and all within 9.70-9.80, so it worked for me.
Ron
It runs hard..1.360 60's on a 10 inch tire. I once made 17 passes over a two week period and all within 9.70-9.80, so it worked for me.
Ron
Adam
#34
03-19-2005, 07:50 PM
True, but I actually got pretty good at it. Before I made the swap I mean. I always kept my right hand on the shifter during the pass, and with the reverse pattern valve body and a ratchet type shifter, you can get pretty proficient. Just click it down.
Ron
Ron
Thread
Thread Starter
Forum
Replies
Last Post
