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Old 03-25-2009, 08:57 AM   #1
maxgs
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Data Acquisition / Learning from Larry

Folks,
Last Saturday (3/21) at MSR-H, I started applying what I had learned after
studying Larry Meyer's data when he rode my bike on 11/29. You might
recall that Larry turned a 1:45.7 while "taking it easy". On 3/7, my fast lap
was a 1:48.3.

I learned from looking at his data, that Larry runs in lower gears in many
corners and sections of the track. For example:

-Turns 1 & 2, Larry runs 1st gear and I was in 3rd.

-Over the launch, Larry was in 1st gear, I was in 3rd.

-Through the bus stop, Larry was in 1st gear, I was in 2nd.

-Onto the backstraight, Larry was in 2nd, and I was in 3rd.

-Through the carousel, Larry was in 1st gear, and I was in 3rd.

So on 3/21, I decided to be in second gear everywhere Larry was running
first. My skills aren't good enough to handle my liter bike in
first gear when riding in anger so second gear will have to due for now. As a
result, I picked up about 2 seconds to run a fast lap of 1:46.4. BTW, I also
picked up the rear end of the bike one turn to facilitate a quicker turn in.

Below is a graph of Larry's RPM's and MPH versus mine on 3/7 and again on
3/21.

The red lines reflect Larry's RPM and MPH.
The green lines reflect my 3/21 RPM and MPH and a 1:46.4 laptime
The blue lines reflect my 3/7 RPM and MPH and 1:48.3 laptime.

The scale for RPMs is on the left and mph on the right.

Meyers Comparison

So this weekend, I plan to work on areas #1, #2, and #3 on Sunday. In
each instance, you can see in the RPM graphs that I am shifting out of 2nd
too early.

#1, I shift to 3rd at 11.8K rpms on the front straight.
#2, I'm shifting to 3rd at 10.6K rpms, heading into turn 3 - the "gut check".
#3, I'm shifting to 3rd at 8.2K heading onto the back straight.

For each of these, I'm going to try to stay in 2nd until 13K rpms. We'll see
how that works.
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Old 03-25-2009, 09:05 AM   #2
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To what do you attribute your old habits of always being in such a high gear to Curt???? With you being a much bigger man than somone like Larry or myself, the mechanical advantage of the lower gears would obviously greatly improve your drive out.

Interesting stuff, thats a big change and contrast in riding and gear selection.
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Old 03-25-2009, 09:10 AM   #3
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doesn't he normally ride a 600??
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Old 03-25-2009, 09:11 AM   #4
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Quote:
Originally Posted by Brian f. View Post
To what do you attribute your old habits of always being in such a high gear to Curt???? With you being a much bigger man than somone like Larry or myself, the mechanical advantage of the lower gears would obviously greatly improve your drive out.

Interesting stuff, thats a big change and contrast in riding and gear selection.
It simple, Brian. FEAR. The lower the gear, the greater the chance to either break the back tire loose or pick up the front end. As such, I consciously short shift and run in safe gears. I still won't use first, that's just nuts on my bike.

The other issue is my perception of when I should shift based on the sound. When I'm at 11 to 12K, it sounds like it's time to shift. I need to try shifting later and look at the data to see if it helps.
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Old 03-25-2009, 09:14 AM   #5
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Quote:
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doesn't he normally ride a 600??
Larry? Yes, ZX-6R
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Old 03-25-2009, 12:02 PM   #6
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Is the section that you titled "Front Straight" really front straight, or is it pit straight?

Looks like you are kicking on the launch and carousel. How the is he going that fast in the keyhole?!?!?
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Old 03-25-2009, 12:17 PM   #7
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Is the section that you titled "Front Straight" really front straight, or is it pit straight?

Looks like you are kicking on the launch and carousel. How the is he going that fast in the keyhole?!?!?
I refer to the Pit Straight, incorrectly as the front straight since it has the start/finish on it. Be sure to look at the lower graphs for MPH and the uppder for RPM. Larry runn the keyhole in first gear, where I'm in second. Our speeds are very close there.
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Old 03-25-2009, 12:38 PM   #8
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Curt.....sometimes my brain hurts when I read your "Data Acquisition" threads.

But seriously, if I'm ever blessed to go pro/semi, your the first guy I'm calling for crew manager. This is some pretty amazing stuff, let us know how your observation of the data transfers to lap times.
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Old 03-25-2009, 06:42 PM   #9
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Quote:
Originally Posted by maxgs View Post
Be sure to look at the lower graphs for MPH and the uppder for RPM. Larry runn the keyhole in first gear, where I'm in second. Our speeds are very close there.
That makes a lot more since... I was like DAAAMMMNNN!
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Old 03-25-2009, 10:00 PM   #10
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one question,of those 2 seconds,how much of that do you attribute to the quicker turn in of your bike?
when i first got off the 180's and jumped on the 190's i also dropped a few seconds'like three and a half
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Old 03-25-2009, 11:09 PM   #11
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Very little of it. My corner entry and mid corner speed didn't change that much. It's just easier to turn the bike.
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Old 03-26-2009, 11:33 AM   #12
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So this is a comparo w/ a 600 and a 1000?

Not so useful me thinks. Well, I guess it is to a certain extent, its working for you so far. Seems it will stop being useful rather quick though. Between the 2 bikes I mean. It'd be much better on the same bike.
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Old 03-26-2009, 11:36 AM   #13
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Quote:
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So this is a comparo w/ a 600 and a 1000?

Not so useful me thinks. Well, I guess it is to a certain extent, its working for you so far. Seems it will stop being useful rather quick though. Between the 2 bikes I mean. It'd be much better on the same bike.
Did you read the thread?
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Old 03-26-2009, 11:59 AM   #14
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Quote:
Originally Posted by maxgs View Post
Did you read the thread?


I think we all know that the charts/lap times would have been a little different, had Larry been on his 600.
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Old 03-26-2009, 12:08 PM   #15
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Quote:
Originally Posted by RoadracerNC View Post


Curt.....sometimes my brain hurts when I read your "Data Acquisition" threads.
+10

I cant handle all this. although i would like to see how i compare, i dont think i have what it takes to be that technical with it.

about as technical as i get is checking my tire pressure at the beginning of the day and changing my oil once a year or so.
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Old 03-26-2009, 12:11 PM   #16
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Quote:
Originally Posted by ROADandTRACK View Post
So this is a comparo w/ a 600 and a 1000?

Not so useful me thinks. Well, I guess it is to a certain extent, its working for you so far. Seems it will stop being useful rather quick though. Between the 2 bikes I mean. It'd be much better on the same bike.
Quote:
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Did you read the thread?
LOL.

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Old 03-26-2009, 12:14 PM   #17
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Quote:
Originally Posted by Mr. Unassailable View Post
+10

I cant handle all this. although i would like to see how i compare, i dont think i have what it takes to be that technical with it.

about as technical as i get is checking my tire pressure at the beginning of the day and changing my oil once a year or so.


One in the same, bro.
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Old 03-26-2009, 01:38 PM   #18
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Yea, I read THIS thread.

Must have missed something. lol
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Old 03-26-2009, 01:44 PM   #19
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Larry was on my bike.
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Old 03-26-2009, 01:50 PM   #20
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Learning...

I learn pretty good by following people.

Buck showed me the launch line, i just changed it some to fit my riding style.

Jason showed me a new line through the gut check in the last session last week that will shave 1/2 a second or so.

I cornerworked the diamonds edge once and watched alonzo and larry all day.
i swore that next time i was on the track there i wasnt going to hit the brakes off
the back straight until i saw . it worked.

And last but not least, this cool dood with this bad camera system got footage of me blowing the carousel exit lap after lap and that cool dood told me to fix my line there. i followed him there a couple laps and got much smoother there.... THANK YOU CURT.

anyhow. i think i learn best by watching/following.

check out my new sig...
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