Hotfart
Ready to race!
- Location
- LFK Kansas
Reason for that is because the gear spacing between 1-2 is so large compared to 2-3 and higher. There is a much bigger RPM drop on 1-2 than the other gears. Shift too early and I feel like I bog.
7
Quarter mile launch technique & shift points
- Thread starter Hotfart
- Start date
Reason for that is because the gear spacing between 1-2 is so large compared to 2-3 and higher. There is a much bigger RPM drop on 1-2 than the other gears. Shift too early and I feel like I bog.
Hotfart
Ready to race!
- Location
- LFK Kansas
Yeah, I disabled the torque/vibration limiter.
Hotfart
Ready to race!
- Location
- LFK Kansas
Was that with stock all-seasons, or summers? 6MT, or DSG? Nice either way, but very, very nice if you did that with a 6MT on all-seasons.
Hotfart
Ready to race!
- Location
- LFK Kansas
Are your Pirellis all-season or summer?
Yeah but for that very reason I'd think a short shift there would benefit. This is based on no data whatsoever lol Just my feeling after driving the car for 10k miles.
Probably wrong what I'm saying, just feels like the higher I go in first, the longer I'm left twirling my thumbs waiting for the rev match.
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Mydixadryl
Ready to race!
- Location
- Texas
MeltedSolid
Autocross Newbie
- Location
- San Francisco Bay Area
- Car(s)
- '15 Golf, e36 328i
That is a very good resource! I hadn't actually seen that video, but it is what I based the numbers that hexxum001 found on when I made them.
I'm surprised he doesn't make the connection that the wheel torques will be the same in different gears when the power the engine is making is the same.
If you want more details, this is the spreadsheet I use: https://docs.google.com/spreadsheets/d/1y930I8weeW2-XP330fRQE2qQQ376dfawUT3cbHqcV88/edit?usp=sharing
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Mydixadryl
Ready to race!
- Location
- Texas
I'm glad someone went to the trouble of running the calculations. I'll save this spreadsheet for future use.
Hexxum001
Ready to race!
- Location
- Los Angeles
Sorry that I didn't give you credit for posting those numbers. I just couldn't find the thread that you posted them in. It was a while back. Good stuff though bro. I'll have to download that spreadsheet when I get home. Thanks for sharing.
MeltedSolid
Autocross Newbie
- Location
- San Francisco Bay Area
- Car(s)
- '15 Golf, e36 328i
No problem. I don't care much about credit, just that information gets spread.
nice graph. Question though
Wouldn't you want to stretch those higher gears out until the power drops off?
Apr stage 1 power curve at least, HP doesn't start to drop off until after ~6200 RPM
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icin235
Passed Driver's Ed
- Location
- Santa Monica, California
Looking for more people who've experimented with different shift points and launch techniques at the track to chime in.
My local drag strip is always so packed, I only got 2 runs in last time I went.
MeltedSolid, thanks for the spreadsheet.
My local drag strip is always so packed, I only got 2 runs in last time I went.
MeltedSolid, thanks for the spreadsheet.