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| Tracking / Autocross / HPDE / Drifting What these cars were built for! |
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07-11-2014, 01:19 AM
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#1 |
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i'm sorry, what?
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the launch
GPS Speed
RPM Throttle RL wheel speed RR wheel speed red car has 235 semi fresh R1Rs blue car has 225 old Z1s noteworthy points: RPM, 5500 vs 3500 Throttle, as you can see the red car did not dump the clutch, I gently engaged while feathering the throttle and managing slip 
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| The Following 7 Users Say Thank You to 7thgear For This Useful Post: | CSG Mike (07-11-2014), Jawnathin (07-11-2014), midnight23 (07-11-2014), R2 (07-12-2014), raul (01-02-2015), renfield90 (07-11-2014), tahdizzle (07-11-2014) |
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07-11-2014, 06:14 AM
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#2 |
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Because compromise ®
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Did you know that if you press the space bar you get full page. That is, it hides the "measures and laps" column.
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My car is completely stock except for all the mods.
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07-11-2014, 09:24 AM
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#3 | |
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i'm sorry, what?
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Quote:
yes... but it's not something I intended for this presentation. my screen realestate is triple that, I just focused down on the first segment. i'll make sure to hide them for you next time.
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| The Following User Says Thank You to 7thgear For This Useful Post: | CSG Mike (07-11-2014) |
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07-11-2014, 03:04 PM
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#4 |
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Very interesting, especially coming off our discussion in the other thread. Thanks a bunch for posting.
Do you think the difference in acceleration was due to blue car bogging on the launch? Doesn't look like it got any wheel slip to keep the revs up. |
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07-11-2014, 03:12 PM
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#5 | |
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i'm sorry, what?
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Quote:
it was precisely because he bogged down the launch, or more to the point of starting out at a less than optimal RPM however having started at the perfect RPM, I did have to manage the wheel spin, as you can see in the bottom graph, my wheels started to spike way too much, and I knew this ahead of time, hence the initial feather of the throttle my buddy had no such problem and was WOT from the start, but because he was under his powerband there was no issue with wheel spin so it was just a gradual acceleration
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07-11-2014, 03:29 PM
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#6 |
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Got it, thanks for confirming. Really shows the importance of keeping the revs up.
Now I wonder if a clutch dump vs clutch slip with no bogging is faster. |
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07-11-2014, 03:49 PM
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#7 | |
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i'm sorry, what?
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on stock clutch and street tires a dump is probably not worth it if both were upgraded and you had a few spare axles in the paddock then by all means.
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07-11-2014, 03:57 PM
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#8 |
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Agreed, probably why I am wanting to try a different launch now. Wasn't so worried on the stock Primacys, but as I'm getting into something a little stickier, didn't want to blow the diff or snap an axle.
Will try your recommended 5500~rpm clutch slip approach. |
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07-11-2014, 06:12 PM
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#9 | |
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Because compromise ®
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Quote:
__________________
My car is completely stock except for all the mods.
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07-11-2014, 06:14 PM
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#10 |
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i'm sorry, what?
Join Date: Jan 2012
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Location: I rock a beat harder than you can beat it with rocks
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| The Following User Says Thank You to 7thgear For This Useful Post: | Captain Snooze (07-11-2014) |
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