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Old 10-21-2008, 11:03 PM   #41
lorin70
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How consistent is the recording on the G2X? I think I read that it will record up to 100 points per second, is that true and does it show that level of accuracy for the GPS points? Is consistency good when comparing lap to lap?

I've been using my Garmin Forerunner 205 to record laps and it does pretty well even though it is designed for running and cycling. It will only record at a max rate of 1 data point per second so at times it is a little off with corner speeds but it does give a pretty consistent indication of what you are doing. It also does not calculate lap times so you have to do it manually. In all, not bad for $200 though. I've been thinking about getting a G2X or similar to get better accuracy so first-hand info on this is helpful.
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Old 10-21-2008, 11:10 PM   #42
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The G2X accuracy is pretty good because they use a combination of GPS data and two accelerometers to map your line around the track. The GPS data is collected at 4 hz and the accelerometer data is collected at 100 hz.
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Old 10-21-2008, 11:18 PM   #43
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I'm lost. Coeffecients, and variables and accelerometers. WTF? (dont try to explain it)

All I know is that I was skeeered as to wreck Curts bike.
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Old 10-22-2008, 05:58 AM   #44
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Quote:
Originally Posted by Mr Whoopie View Post
House of pain,
Just buy a basic lap timer and save your money for TIRES, PRACTICE and ENTRY FEES.
I've had a Mychron timer for 2 years now and it hasn't failed me yet.
this is a lap timer for every corner.
and you can get on the track all you want, but if you don't know what areas you are weak, practice won't do alot of good.
you can actually create bad habits.
the g2x saves you money so you can buy tires, etc
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Old 10-22-2008, 06:49 AM   #45
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oh yea i forgot to tell ya

we looked at my data and found ways to go faster AND be easier on the tire.
it's really a no-brainer.
gabe likes to read it after practice sessions at the track.
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Old 10-22-2008, 07:27 AM   #46
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Hey Mark, how did you guys pick up the RPM signal? Were you able to get it from an ECU pin, or did you have to buy a GMR sensor or some other type of device?

-Curt
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Old 10-22-2008, 07:42 AM   #47
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I would probably be in for a group buy on something like this (Curt's fancy piece).
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Old 10-22-2008, 08:07 AM   #48
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hey curt, what's up

Quote:
Originally Posted by maxgs View Post
Hey Mark, how did you guys pick up the RPM signal? Were you able to get it from an ECU pin, or did you have to buy a GMR sensor or some other type of device?

-Curt
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we tied into the tach wire at the instruments....just behind the plug that goes into the harness.
i think it's the yellow wire on our kawi, but you should be able to look at your wiring diagram and identify it easily.
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Old 10-22-2008, 08:36 AM   #49
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How many people for a group buy? I can get something put together pretty easily.

-Curt
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Old 10-22-2008, 09:18 AM   #50
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Group buy--- +1
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Old 10-22-2008, 09:46 AM   #51
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Quote:
Originally Posted by maxgs View Post
How many people for a group buy? I can get something put together pretty easily.

-Curt
Tax season, hammer. Slow down.
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Old 10-22-2008, 09:49 AM   #52
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that is a cool frickin' toy for a track junkie. Frickin' expensive too, but I can see so much potential in the way of learning from the data.
May have to ask Rossi to buy me one for Christmas.
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Old 10-22-2008, 09:52 AM   #53
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Cool

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Originally Posted by Jerran V View Post
That may be one of the coolest things I've ever seen...I NEEEEEEEEEEED one!
But....waaaaaaaaay to much info.
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Old 10-22-2008, 10:23 AM   #54
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Quote:
Originally Posted by maxgs View Post

Hand Athon

Specifications:
# Automatic chrono with 1/100 of a second resolution
# GPS system with airborne algorithms
# Digital tachometer
# GPS speed display
# Max RPM reading = 32000; max speed = 350 Km/h o 218 Mph
# Customizable LED Bar and Shift Light
# Settable RPM divisor
# Double Hour meter for scheduled engine maintenance
# 999 lap memory in 99 sessions
# Per lap Maximum RPM and speed memory
# Max RPM for each lap memory
# Speed display in Km/h or Mph
# Customizable self power off
# Customizable power saving features
# Customizable main screen
# Backlit 128x64 graphic display
# Water resistant
# Dimensions: width. 96 mm - height. 74 mm - thick. 22,6 mm ( +7mm battery vain) - weight, 125 gr.
# Power supply : 2 internal AA batteries
# Universal installation
# Destination: cars - motorbikes - scooters - go karts -ATVs

ALL NEW BOTH GPS LAP TIMERS ARE NOW offered with DUAL MODE (Batter Powered, AND HARDWIRE) in the same unit.

I have a buddy with one of these. He seems to like his. There's a hardwired version if you want to completely replace the instrument cluster. You'd just want to wire up a seperate neutral, and low fuel light.
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Old 10-22-2008, 10:47 AM   #55
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Those fancy lap timers are a fun tool and can help out the really fast guys. But for the rest of us it will do little. First you have to learn how to ride.
I know for me I need to work on these 4 areas:
late brake/trail brake
back to W.O.T. early
carrying corner speed
using the whole track
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Old 10-22-2008, 11:06 AM   #56
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Quote:
Originally Posted by Mr Whoopie View Post
Those fancy lap timers are a fun tool and can help out the really fast guys. But for the rest of us it will do little. First you have to learn how to ride.
I know for me I need to work on these 4 areas:
late brake/trail brake
back to W.O.T. early
carrying corner speed
using the whole track
Yep, just a fun tool. It would be great to strap one of these things to your bike or another fast guy just to see the speed, brake points, and your line.
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Old 10-22-2008, 11:22 AM   #57
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Quote:
Originally Posted by Mr Whoopie View Post
Those fancy lap timers are a fun tool and can help out the really fast guys. But for the rest of us it will do little. First you have to learn how to ride.
I know for me I need to work on these 4 areas:
late brake/trail brake
back to W.O.T. early
carrying corner speed
using the whole track

Without an accurate lap timer, how are you sure you're accomplishing anything

Thats where I'm at. I THINK I'm carrying more corner speed, I THINK I'm braking later, but my only indication is whether or not I'm catching up to the guy in front of me.
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Old 10-22-2008, 11:51 AM   #58
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Mr. Whoopie knows he's accomplishing something when he podiums three times in his first novice race, starting from the back of the pack.
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Old 10-22-2008, 12:05 PM   #59
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Quote:
Originally Posted by po-po 5.0 View Post
Without an accurate lap timer, how are you sure you're accomplishing anything

Thats where I'm at. I THINK I'm carrying more corner speed, I THINK I'm braking later, but my only indication is whether or not I'm catching up to the guy in front of me.
I was speaking of the GPS data acquistion lap timer aka fancy lap timer, title of this thread. Not your basic lap timer. Yes it's good to know your lap times if you want to improve.
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Old 10-22-2008, 12:08 PM   #60
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Quote:
Originally Posted by maxgs View Post
How many people for a group buy? I can get something put together pretty easily.

-Curt
I would be interested around tax time for sure.

My girlfriend is going to hate me by the end of next year... I can see this being a very expensive hobby. Just started riding the track in Sept. and alreay plan on having atleast 5-6 track days before the season is over.

I can't imagine how much worse it is going to be next year when I buy my track bike....lol
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