The Official G-Meter Testing Thread
03-29-2006, 01:30 PM
#381
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Here's is your 100% Weather/500' Altitude data.
Actual Density Altitude:
Your results:
Air Temp 67 (?F)
Altimeter Setting 30.32 (in)
Dew Point 49 (?F)
Altitude 20 (Feet)
Density Altitude 251.4 (feet)
First Pass--100% Weather/Sea Level
Your results:
Density Altitude 251.4 (feet)
Uncorrected ET 13.810 (sec)
Uncorrected MPH 101.74 (mph)
Corrected ET 13.774
Corrected MPH 102.015
First Pass--100% Weather/500' Altitude
Your results:
E.T. 13.774 (sec)
Trap Speed 102.015 (mph)
Measured DA 0 (feet)
Corrected to 500(feet) DA
Corrected ET 13.847 (sec)
Corrected Trap Speed 101.47 (mph)
Second Pass--100% Weather/Sea Level
Your results:
Density Altitude 251.4 (feet)
Uncorrected ET 13.247 (sec)
Uncorrected MPH 114.62 (mph)
Corrected ET 13.212
Corrected MPH 114.93
Second Pass--100% Weather/500' Altitude
Your results:
E.T. 13.212 (sec)
Trap Speed 114.93 (mph)
Measured DA 0 (feet)
Corrected to 500(feet) DA
Corrected ET 13.282 (sec)
Corrected Trap Speed 114.316 (mph)
Third Pass--100% Weather/Sea Level
Your results:
Density Altitude 251.4 (feet)
Uncorrected ET 13.817 (sec)
Uncorrected MPH 101.65 (mph)
Corrected ET 13.781
Corrected MPH 101.925
Third Pass--100% Weather/500' Altitude
Your results:
E.T. 13.781 (sec)
Trap Speed 101.925 (mph)
Measured DA 0 (feet)
Corrected to 500(feet) DA
Corrected ET 13.854 (sec)
Corrected Trap Speed 101.38 (mph)
Fourth Pass--100% Weather/Sea Level
Your results:
Density Altitude 77.85 (feet)
Uncorrected ET 13.857 (sec)
Uncorrected MPH 101.42 (mph)
Corrected ET 13.846
Corrected MPH 101.505
Fourth Pass--100% Weather/500' Altitude
Your results:
E.T. 13.846 (sec)
Trap Speed 101.505 (mph)
Measured DA 0 (feet)
Corrected to 500(feet) DA
Corrected ET 13.919 (sec)
Corrected Trap Speed 100.962 (mph)
Actual Density Altitude:
Your results:
Air Temp 67 (?F)
Altimeter Setting 30.32 (in)
Dew Point 49 (?F)
Altitude 20 (Feet)
Density Altitude 251.4 (feet)
First Pass--100% Weather/Sea Level
Your results:
Density Altitude 251.4 (feet)
Uncorrected ET 13.810 (sec)
Uncorrected MPH 101.74 (mph)
Corrected ET 13.774
Corrected MPH 102.015
First Pass--100% Weather/500' Altitude
Your results:
E.T. 13.774 (sec)
Trap Speed 102.015 (mph)
Measured DA 0 (feet)
Corrected to 500(feet) DA
Corrected ET 13.847 (sec)
Corrected Trap Speed 101.47 (mph)
Second Pass--100% Weather/Sea Level
Your results:
Density Altitude 251.4 (feet)
Uncorrected ET 13.247 (sec)
Uncorrected MPH 114.62 (mph)
Corrected ET 13.212
Corrected MPH 114.93
Second Pass--100% Weather/500' Altitude
Your results:
E.T. 13.212 (sec)
Trap Speed 114.93 (mph)
Measured DA 0 (feet)
Corrected to 500(feet) DA
Corrected ET 13.282 (sec)
Corrected Trap Speed 114.316 (mph)
Third Pass--100% Weather/Sea Level
Your results:
Density Altitude 251.4 (feet)
Uncorrected ET 13.817 (sec)
Uncorrected MPH 101.65 (mph)
Corrected ET 13.781
Corrected MPH 101.925
Third Pass--100% Weather/500' Altitude
Your results:
E.T. 13.781 (sec)
Trap Speed 101.925 (mph)
Measured DA 0 (feet)
Corrected to 500(feet) DA
Corrected ET 13.854 (sec)
Corrected Trap Speed 101.38 (mph)
Fourth Pass--100% Weather/Sea Level
Your results:
Density Altitude 77.85 (feet)
Uncorrected ET 13.857 (sec)
Uncorrected MPH 101.42 (mph)
Corrected ET 13.846
Corrected MPH 101.505
Fourth Pass--100% Weather/500' Altitude
Your results:
E.T. 13.846 (sec)
Trap Speed 101.505 (mph)
Measured DA 0 (feet)
Corrected to 500(feet) DA
Corrected ET 13.919 (sec)
Corrected Trap Speed 100.962 (mph)
....let us know how the rocket science goes, thats gotta be even more fun than drivin 
03-29-2006, 04:29 PM
#383
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03-29-2006, 05:08 PM
#384
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Originally Posted by cobradav' post='261963' date='Mar 29 2006, 12:45 PM
I'm sorry I do not have time to do any of my own analysis on these first runs, but I have three upcoming launches I am working requirements on and just cannot afford the time right now. Hence I could not even put these into tabular form - just a snap shot.
I believe my weight to be off. Vehicle is only 22 pounds lighter than 545 per unladen weight in BMW specs so I believe I need to increase weight.
Also think pitch is too high. I believe this suspension could easily be a 1.8 or 1.9.
After some experimentation I determined my best runs were DSC OFF and in Steptronic (Manual Mode) starting in M1 and letting it auto shift at Redline. ANy attempts with D or DS were far slower
Wx
Temp = 67 degrees
DewPt = 49 degrees
Wind Sp = 1 MPH
Bar = 30.32" or 1026.7mb
Height = 20 feet
Hate to hit and run but gotta go.
I believe my weight to be off. Vehicle is only 22 pounds lighter than 545 per unladen weight in BMW specs so I believe I need to increase weight.
Also think pitch is too high. I believe this suspension could easily be a 1.8 or 1.9.
After some experimentation I determined my best runs were DSC OFF and in Steptronic (Manual Mode) starting in M1 and letting it auto shift at Redline. ANy attempts with D or DS were far slower
Wx
Temp = 67 degrees
DewPt = 49 degrees
Wind Sp = 1 MPH
Bar = 30.32" or 1026.7mb
Height = 20 feet
Hate to hit and run but gotta go.
03-29-2006, 06:09 PM
#385
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Originally Posted by EBMCS03' post='262233' date='Mar 29 2006, 08:29 PM
03-29-2006, 06:11 PM
#386
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Originally Posted by grogan545' post='262237' date='Mar 29 2006, 09:08 PM
Glad to see you are aboard with your testing cobradave.Your initial runs look decent,although something looks wrong with "comparison 1".The et looks feasable but the 114 mph seems out of the range we could expect for a545/645.I think you will be handicaped by the hot humid weather in florida,but with Znod working his magic with corrections you should see better results.
03-30-2006, 06:45 AM
#387
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Znod, thanks for updated info. Yea, the 114 MPH was certainly an outlyer compared to the others, but it sure felt like it 
Looking at the speed graph you can see it starts slower but pulls through the rest at about 4.2 seconds and 50MPH. I could feel the difference. It also looks like I rolled out a little more on that one as well. Although the trap speed is suspect I sure hope I can duplicate the ET on subsequent runs.
I did not do complete research into your set ups, like tire pressures, fuel levels etc.
I did run at 32psi on rears and they have 19,000 + miles (about 60% wear). If I try launching at above 1500 RPM I'll lite'em up. Do I drop pressure a little more?
I believe I remember u guys using 12" rollout, so that is how I set it up.
I am going to raise my weight about 100 pounds. My HP looks low on the three and high on the one.
I'll set pitch to 1.8.
I want to try to get a decent set up in hopes of taking Gtech to drag strip to validate/verify. Not sure I can do that yet so will have to see what my options are.
Looking at the speed graph you can see it starts slower but pulls through the rest at about 4.2 seconds and 50MPH. I could feel the difference. It also looks like I rolled out a little more on that one as well. Although the trap speed is suspect I sure hope I can duplicate the ET on subsequent runs. I did not do complete research into your set ups, like tire pressures, fuel levels etc.
I did run at 32psi on rears and they have 19,000 + miles (about 60% wear). If I try launching at above 1500 RPM I'll lite'em up. Do I drop pressure a little more?
I believe I remember u guys using 12" rollout, so that is how I set it up.
I am going to raise my weight about 100 pounds. My HP looks low on the three and high on the one.
I'll set pitch to 1.8.
I want to try to get a decent set up in hopes of taking Gtech to drag strip to validate/verify. Not sure I can do that yet so will have to see what my options are.
03-30-2006, 06:55 AM
#388
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Originally Posted by cobradav' post='262489' date='Mar 30 2006, 10:45 AM
Znod, thanks for updated info. Yea, the 114 MPH was certainly an outlyer compared to the others, but it sure felt like it Looking at the speed graph you can see it starts slower but pulls through the rest at about 4.2 seconds and 50MPH. I could feel the difference. It also looks like I rolled out a little more on that one as well. Although the trap speed is suspect I sure hope I can duplicate the ET on subsequent runs.
I hope that your best, especially the ET, holds up too. Yehaaa if it does.
I did not do complete research into your set ups, like tire pressures, fuel levels etc.
I usually have 30 to 32 in the rear (as I lose air) and 32 to 34 in the front (after refilling). I chose these settings for ride, not performance measurement. The more pressure the better if you can avoid wheel spin.
I did run at 32psi on rears and they have 19,000 + miles (about 60% wear). If I try launching at above 1500 RPM I'll lite'em up. Do I drop pressure a little more?
I believe I remember u guys using 12" rollout, so that is how I set it up.
Right.
I am going to raise my weight about 100 pounds. My HP looks low on the three and high on the one.
We are using 4150 lbs for our cars. I am sure that you know that the HP values given by the Pro RR are very low-looking, no-correction-for-any possible loss HP/Tq values.
I'll set pitch to 1.8.
I use 1.9, while g-man uses 2.0--since he does not have the sport package. .1 makes very little difference in the pitch correction.
I want to try to get a decent set up in hopes of taking Gtech to drag strip to validate/verify. Not sure I can do that yet so will have to see what my options are.
Sounds great.
Looking at the speed graph you can see it starts slower but pulls through the rest at about 4.2 seconds and 50MPH. I could feel the difference. It also looks like I rolled out a little more on that one as well. Although the trap speed is suspect I sure hope I can duplicate the ET on subsequent runs. I hope that your best, especially the ET, holds up too. Yehaaa if it does.
I did not do complete research into your set ups, like tire pressures, fuel levels etc.
I usually have 30 to 32 in the rear (as I lose air) and 32 to 34 in the front (after refilling). I chose these settings for ride, not performance measurement. The more pressure the better if you can avoid wheel spin.
I did run at 32psi on rears and they have 19,000 + miles (about 60% wear). If I try launching at above 1500 RPM I'll lite'em up. Do I drop pressure a little more?
I believe I remember u guys using 12" rollout, so that is how I set it up.
Right.
I am going to raise my weight about 100 pounds. My HP looks low on the three and high on the one.
We are using 4150 lbs for our cars. I am sure that you know that the HP values given by the Pro RR are very low-looking, no-correction-for-any possible loss HP/Tq values.
I'll set pitch to 1.8.
I use 1.9, while g-man uses 2.0--since he does not have the sport package. .1 makes very little difference in the pitch correction.
I want to try to get a decent set up in hopes of taking Gtech to drag strip to validate/verify. Not sure I can do that yet so will have to see what my options are.
Sounds great.
03-30-2006, 07:08 AM
#389
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Znod,
My concern on HP was comparing to yours' and Grogans' HP readings, not the low values in and of themselves. I know that the Gtech measurements won't equate to wheel HP. In fact they recommend an altered method of measuring HP than the outright drag process. I will try that just to get good baseline for any future mods.
Now is it not true that you use lighter wheels and tires than OEM - I forgot to go recheck before starting to reply here. If that were the case would you not be a little lighter than 4150?
My concern on HP was comparing to yours' and Grogans' HP readings, not the low values in and of themselves. I know that the Gtech measurements won't equate to wheel HP. In fact they recommend an altered method of measuring HP than the outright drag process. I will try that just to get good baseline for any future mods.
Now is it not true that you use lighter wheels and tires than OEM - I forgot to go recheck before starting to reply here. If that were the case would you not be a little lighter than 4150?
03-30-2006, 07:24 AM
#390
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Originally Posted by cobradav' post='262507' date='Mar 30 2006, 11:08 AM
Znod,
My concern on HP was comparing to yours' and Grogans' HP readings, not the low values in and of themselves. I know that the Gtech measurements won't equate to wheel HP. In fact they recommend an altered method of measuring HP than the outright drag process. I will try that just to get good baseline for any future mods.
Now is it not true that you use lighter wheels and tires than OEM - I forgot to go recheck before starting to reply here. If that were the case would you not be a little lighter than 4150?
My concern on HP was comparing to yours' and Grogans' HP readings, not the low values in and of themselves. I know that the Gtech measurements won't equate to wheel HP. In fact they recommend an altered method of measuring HP than the outright drag process. I will try that just to get good baseline for any future mods.
Now is it not true that you use lighter wheels and tires than OEM - I forgot to go recheck before starting to reply here. If that were the case would you not be a little lighter than 4150?