Engstrom wrote:
>
> Bob,
>
> I read the article in NAP and like all of Byron's Geez articles it was very
> informative. There's so much that Geez can tell us about our runs if you
> know how to look at the data. I just want to thank Byron for writing those
> articles.
>
> As for your 1 to 2nd shift, you said there were "a couple of runs" where
> you shifted at 29 m.p.h. Can I gather from that that there were also runs
> where you shift at 30 m.p.h. or faster? Why did you shift to 2nd at
> 29 m.p.h. on those runs? Was it a course dependant thing (you needed
> to complete the shift before a slalom/turn/tricky course element? I think
> using Geez to tell you at what speed you shifted (which might be too early)
> is almost as useful as using it to tell you how quickly you shifted.
>
Most older cars crunch gears if you shift fast after hitting redline. (At
least mine do). So I've developed a habit of shifting slow at redline.
I think the Geez! 0-35 or 0-40 time is telling me to shift *fast* at 4500~5000
is better.
I have a 1970 911, which has 1st gear down and to the left. This makes the 1-2
a dog-leg shift... and a small chalenge by itself. So hitting red-line in 1st
gear (around 35mph) seems to certainly be the fastest way to 35, but the added
whirring seems to make the 1-2 shift harder to execute quickly....
All speculation until I really test some more. The course I was looking
at had a 0.6 left g turn at around the 30mph mark. (A cone)
Robert Larson
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