Call in your order on
0800 0248454
and pay by card.

 
  Shop    Tech. Info.    Contact Us    About Us    Links  
 
 

Gearbox & Speedo Ratio Calculator

 
 
   Select Details   
Tyre Size 
Drop Gear Ratio 
Gearbox type 
Final Drive Ratio 
TPM of Speedo 
Worm & Pinion ratio 


 
 
   Calculated Speed by RPM in each Gear   
0
10
20
30
40
50
60
70
80
90
100
1000
2000
3000
4000
5000
6000
7000
8000
RPM















 
   Actual Speed vs (Speedo Reading)   
RPMx100
Gear
10
20
30
40
50
55
60
65
70
75
80
1st
2nd
3rd
4th
5th
6th

 
   Guessworks Feature Product - Speedo Pinion Drive - 15 Tooth   
When changing wheel sizes, final drive ratios or Speedo clusters it is essential to make sure the speedo cable worm and drives are correct for the car. There are many combinations available, some work better than others, but one which is suitable for the application can usually be found.

This is for a single pinion drive of which there are at least six variations. The tooth options are 15, 16, 17 and 18, but the required part will depend on the worm drive it is to be paired with so please detail both the tooth count and diameter of the speedo worm when ordering so the correct match can be made.

To calculate the required drive please use my ratio calculator page http://www.guess-works.com/Tech/ratio.htm.

15 Tooth - TXD10004 (small in diameter) will only work with TXF10001

more.......

£ 15.00 + VAT
Learn more about this product, or purchase. Learn more about Guessworks Gearboxes

Imperial  
Metric