Gear Ratio Calculation Program

Message Topic Search Topic Options Post Reply Create New Topic Printable Version Translate Topic

   Found this useful gear ratio calculator - some of you might have seen it or something similar before.
http://locost7.info/gearcalc.php
Calculates maximum speed at "redline" in each gear and speed per 1000 RPM 
Chart of RPM's for each gear at 10 Km/h (or 5 Mph) intervals 
Calculates rev drop and actual RPM value at each gear change 
Calculations performed in Metric or Imperial units 
The chosen units are maintained between runs 
Pre-set gear sets or manual input (additional gear sets added) 
Comparative gear ratios displayed graphically 
Compound ratios calculated and displayed for each gear 
Results can be saved to a text file or printed 
If known, you can enter the RPM at which peak power is generated and you can then compare shift points at max RPM and Peak Power (leave blank if not known) 
Defaults to last entered values at program start 
Handy piece of software
I have raised the RPM on my 2002 to 7800RPM - with 205/50/15 A032's, the top speed is now calculated at 144 MPH (3.64 diff)
For those interested, E30 M3 ratios are as follows:
1st 3.717
2nd 2.404
3rd 1.766
4th 1.264
5th 1.000

Author	Message Topic Search Topic Options Post Reply Create New Topic Printable Version Translate Topic
2002SportEvo Members Profile Send Private Message Find Members Posts Add to Buddy List Senior Member II Joined: 30-June-2004 Location: Scotland Status: Offline Points: 247	Topic: Gear Ratio Calculation Program Posted: 21-January-2005 at 04:27
	Found this useful gear ratio calculator - some of you might have seen it or something similar before. http://locost7.info/gearcalc.php Calculates maximum speed at "redline" in each gear and speed per 1000 RPM Chart of RPM's for each gear at 10 Km/h (or 5 Mph) intervals Calculates rev drop and actual RPM value at each gear change Calculations performed in Metric or Imperial units The chosen units are maintained between runs Pre-set gear sets or manual input (additional gear sets added) Comparative gear ratios displayed graphically Compound ratios calculated and displayed for each gear Results can be saved to a text file or printed If known, you can enter the RPM at which peak power is generated and you can then compare shift points at max RPM and Peak Power (leave blank if not known) Defaults to last entered values at program start Handy piece of software I have raised the RPM on my 2002 to 7800RPM - with 205/50/15 A032's, the top speed is now calculated at 144 MPH (3.64 diff) For those interested, E30 M3 ratios are as follows: 1st 3.717 2nd 2.404 3rd 1.766 4th 1.264 5th 1.000
	2002 SportEvo

Sponsored Links

UweM3 Members Profile Send Private Message Find Members Posts Add to Buddy List Moderator Group Joined: 11-February-2003 Location: United Kingdom Status: Offline Points: 5445	Posted: 21-January-2005 at 15:38
	cool Programm, thanks for sharing
	E61 520d, slow and buzzy but my wallet likes the mpg.....

2002SportEvo Members Profile Send Private Message Find Members Posts Add to Buddy List Senior Member II Joined: 30-June-2004 Location: Scotland Status: Offline Points: 247	Posted: 24-January-2005 at 02:59
	It's handy wee program for checking out other diff ratios, tyre sizes etc...
	2002 SportEvo