Search found 50 matches
- Fri May 04, 2007 5:46 pm
- Forum: Data Logging - Randy McMahon RPM Performance
- Topic: Powerglide high gear ratio question.
- Replies: 1
- Views: 10654
Unless his glide is some new prototype that is no longer a glide, the output shaft cannot turn any faster than the input shaft. Due to the slippage in the converter when under load, the engine will always turn faster than the driveshaft. When decelerating, the driveline will turn faster than the eng...
- Fri May 04, 2007 5:31 pm
- Forum: Data Logging - Randy McMahon RPM Performance
- Topic: lm1
- Replies: 1
- Views: 9976
- Mon Jan 22, 2007 9:13 am
- Forum: Data Logging - Randy McMahon RPM Performance
- Topic: MSD 7531
- Replies: 10
- Views: 19580
Craig, The input frequency would be about 0 to 700 Hz for a 4 magnet collar at 10,000RPM. If you use the same sensor we use, the input would be 12v rectangular waveform with about 95% hi, 5% low pulses. For the output, you need to know what input range the MSD expects (probably 0 to 5 volts). The de...
- Sat Jan 20, 2007 9:51 am
- Forum: Data Logging - Randy McMahon RPM Performance
- Topic: MSD 7531
- Replies: 10
- Views: 19580
A 4 magnet collar at 500 rpm would provide 33 samples per second. If the logger is recording at 100 samples per second (a reasonable minimum for good Drive RPM data) the data would look like stair steps. The problem is due to the conversion method and the sampling of the second conversion. The first...
- Fri Jan 19, 2007 9:15 am
- Forum: Data Logging - Randy McMahon RPM Performance
- Topic: MSD 7531
- Replies: 10
- Views: 19580
- Thu Jan 18, 2007 9:19 am
- Forum: Data Logging - Randy McMahon RPM Performance
- Topic: MSD 7531
- Replies: 10
- Views: 19580
- Tue Jan 02, 2007 10:56 am
- Forum: Data Logging - Randy McMahon RPM Performance
- Topic: logging A/F ratio
- Replies: 15
- Views: 31158
- Mon Dec 18, 2006 9:23 am
- Forum: Data Logging - Randy McMahon RPM Performance
- Topic: O2 Sensor Reading High
- Replies: 4
- Views: 11710
O2 Senspr
I know of no way to clean an O2 Sensor. Reading lean is typical of a bad sensor. It could be a problem in the controller, but more likely its the sensor.
- Tue Sep 05, 2006 9:08 am
- Forum: Data Logging - Randy McMahon RPM Performance
- Topic: Autometer Ultimate II Tach & TachFacts Software
- Replies: 2
- Views: 10129
- Wed Jul 19, 2006 8:36 am
- Forum: Data Logging - Randy McMahon RPM Performance
- Topic: logging A/F ratio
- Replies: 15
- Views: 31158
- Fri Jul 07, 2006 1:11 pm
- Forum: Data Logging - Randy McMahon RPM Performance
- Topic: logging A/F ratio
- Replies: 15
- Views: 31158
- Fri Jul 07, 2006 9:05 am
- Forum: Data Logging - Randy McMahon RPM Performance
- Topic: logging A/F ratio
- Replies: 15
- Views: 31158
- Sat Jul 01, 2006 2:49 pm
- Forum: Data Logging - Randy McMahon RPM Performance
- Topic: one quick question
- Replies: 2
- Views: 10092
Todd, The instructions are not as clear as they need to be. The Engine RPM, Drive RPM and G meter settings in the Acquisition section of the setup are the Automatic Launch Detect function. You should set those values to a level that will not be reached until after you leave the starting line. The ot...
- Mon Jun 12, 2006 9:15 am
- Forum: Data Logging - Randy McMahon RPM Performance
- Topic: driveshaft RPM how to?
- Replies: 5
- Views: 14673
- Thu May 11, 2006 8:44 am
- Forum: Data Logging - Randy McMahon RPM Performance
- Topic: Infrared Thermometer
- Replies: 6
- Views: 14289