Thrust Angle

T-Cut · 20th September 2009, 20:44

A discussion about tracking has raised a query I'd like to understand better.
I know what the Thrust Angle is, so no problem there. What I'd like to understand is how the Thrust Angle is determined from the rear wheel Toes.
Does anybody know?

And as part of the query, how is the Total Toe calculated from the four wheel Toes?

TC

BigRuss · 21st September 2009, 01:34

The total toes apply to each axle seperately.

For calculating the total toe angle calculate the difference between the two toe readings.

Example: manufactures spec O/S +1 deg +0.25, N/S +1 deg +0.25, Total toe = +1 degree +/- 0.25 deg

For calculating the thrust angle you normally half the total toes of the rear wheels.

For example: if the nearside toe is 8 degrees and the offside toe is 0 degrees then the thrust angle is 4 degrees.

The above examples are simple ones as it's 2.35 am and time I got some sleep.

Hope this helps,

Russ

T-Cut · 21st September 2009, 12:27

Thanks Russ, that's just what I needed.

TC

20th September 2009, 20:44	#1
T-Cut This is my second home Rover75 and Mreg Corsa. Join Date: Nov 2006 Location: Sumweer onat mote o'dust (Sagin) Posts: 21,753 Thanks: 341 Thanked 3,660 Times in 2,924 Posts	Thrust Angle A discussion about tracking has raised a query I'd like to understand better. I know what the Thrust Angle is, so no problem there. What I'd like to understand is how the Thrust Angle is determined from the rear wheel Toes. Does anybody know? And as part of the query, how is the Total Toe calculated from the four wheel Toes? TC

21st September 2009, 01:34	#2
BigRuss Premium Trader 75 CDT Tourer,2.5 Launch Saloon, Omipro MG/Rover (T4) Join Date: Jul 2007 Location: Liversedge, West Yorkshire Posts: 5,405 Thanks: 1,105 Thanked 1,340 Times in 661 Posts	The total toes apply to each axle seperately. For calculating the total toe angle calculate the difference between the two toe readings. Example: manufactures spec O/S +1 deg +0.25, N/S +1 deg +0.25, Total toe = +1 degree +/- 0.25 deg For calculating the thrust angle you normally half the total toes of the rear wheels. For example: if the nearside toe is 8 degrees and the offside toe is 0 degrees then the thrust angle is 4 degrees. The above examples are simple ones as it's 2.35 am and time I got some sleep. Hope this helps, Russ __________________ Replacement Key Service http://https://the75andztclub.co.uk/...d.php?t=244732 Full T4 Testbook diagnostics available. Diesel ECU repair and replacement. Options enabled or disabled as required. Diesel X-Power 135 and 160bhp, Rover 1.8T 150 to 160 MG 160 V6 to 177 upgrades available P.M. for details. Last edited by BigRuss; 21st September 2009 at 09:40..

21st September 2009, 12:27	#3
T-Cut This is my second home Rover75 and Mreg Corsa. Join Date: Nov 2006 Location: Sumweer onat mote o'dust (Sagin) Posts: 21,753 Thanks: 341 Thanked 3,660 Times in 2,924 Posts	Thanks Russ, that's just what I needed. TC