Finding ackerman measurement
Finding ackerman measurement
(OP)
Can anybody tell me what the ackerman would equate to in this drawing? Thanks.
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Finding ackerman measurement
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RE: Finding ackerman measurement
RE: Finding ackerman measurement
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RE: Finding ackerman measurement
RE: Finding ackerman measurement
J. Reimpell H. Stoll J. W. Betzler.
ISBN 978-0-7680-0657-5 "
Has a very thorough discussion of how you get from the difference in front wheel steer angles (aka wheel cut angles aka steering error aka delta toe) to Ackermann.
Working out the steer angle error can only be done simply for very simple geometries, otherwise you need to consider 3d angles. If you have a double wishbone geometry then wishbon.bas will work them out.
Cheers
Greg Locock
SIG:Please see FAQ731-376: Eng-Tips.com Forum Policies for tips on how to make the best use of Eng-Tips.
RE: Finding ackerman measurement
% Ackerman = ( ai - ao ) / ( aic - aoc )
where: ai
=
inside wheel steer angle
ao
=
outside wheel steer angle
aic
=
inside wheel steer angle required to have the wheel plane perpendicular line intersect a line passing through the rear axle at the center point between where the inside tire perpendicular intersects the axle line and where the outside tire perpendicular intersects the line.
aoc
=
outside wheel steer angle required to have the wheel plane perpendicular line intersect a line passing through the rear axle at the center point between where the inside tire perpendicular intersects the axle line and where the outside tire perpendicular intersects the line.
Cheers
Greg Locock
SIG:Please see FAQ731-376: Eng-Tips.com Forum Policies for tips on how to make the best use of Eng-Tips.
RE: Finding ackerman measurement