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Versions of SusProg3D
V4.525 notes

SusProg3D - Suspension by Design.
===================
Version 4.530 has a number of enhancements.

Thanks to all of those who made comments and suggestions.

In no particular order.

 

bullet

Added the TriumphGT6 rear suspension with transverse leaf spring.

bullet

Added scrolling interior to input dialogs when using custom text sizes.

bullet

Compiler updates (Delphi 10.1 Berlin Update 1).

bullet

Fixed a bug with setting the ride heights.
If one end of the vehicle had a ride height location point vertical dimension of zero and a ride height of zero, and the other end had a non-zero ride height, then this would fail.
This usually only occurred if designing for one end of the vehicle and leaving the other end "blank".

bullet

Fixed a bug with the display of the undertray.
If the bump increments at one end were left at zero, then the undertray display of the other end was incorrect.
This usually only occurred if designing for one end of the vehicle and leaving the other end "blank".

Your feedback and suggestions are always appreciated.

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V4.530 notes

===================
Version 4.525 has a number of enhancements.

Thanks to all of those who made comments and suggestions.

In no particular order.

Added Ford Integral Link independent rear suspension.
As used on the 2015 Mustang.

Added an additional option for Steering auto-calculation.
[Chassis] will now always calculate the X, Y and Z coordinates; the new [ChassisZ] option will calculate the X and Y coordinates, while holding the specified Z value.
Note that the "Z" will change according to the user specified longitudinal axis identifier.

The method used to calculate roll centre and roll axis has been changed for all independent suspension types (except for struts).
This will make the calculations more robust and able to process a wiser range of input dimensions.
There may be very small differences in the roll centre heights and the swing arm lengths.
There should be no difference in the wheel alignment - camber, caster and toe.

The upright swivel definitions and calculations have been extended to include a vertical offset.
This will now support the typical Nissan Skyline front suspension.

When using the CMM tool, the "Calc" and "Apply" buttons now apply to the current page.

The way of dimensioning the lower control arm for Jaguar, H-arm and Porsche928 rear suspensions has changed.
The dimensions will be recalculated when opening the file.
The help file has the new diagrams.

Fixed a bug when doing dynamic calculations for a three-wheel vehicle (with zero rear roll stiffness)

Changed the sign of the toe-out in turn results to be consistent with toe-in as positive, and toe-out as negative values.

Please read the V4.525 installation notes.

Your feedback and suggestions are always appreciated.

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V4.520 notes

===================
Version 4.520 has a number of enhancements.

Thanks to all of those who made comments and suggestions.

In no particular order.

Added Woblink lateral location option.
Very similar to the conventional Watts linkage, with a lower roll centre and both links on the same side.

Allow for an offset Watts pivot point. Some production vehicles have the Watts pivot offset from the axle centre.

Updated various error messages and added extra information.

Fixed the display for offset bellcranks.

Added an option to "Save Desktop". Go to Settings -> Settings and select "Save Desktop on Exit". When starting SusProg3D next, it will display all the inputs as last used.

Included support for Windows 8.1

Fixed the display for small diameter shockabsorbers.
When using small diameter springs and motorcycle shockabsorbers, the spring would be "hidden" inside the shockabsorber.

If ECalc or VCalc are open when an input is applied, then they will be automatically calculated.
Previously, when updating dimensions,it was required to first "Apply" the dimensional change, and then to do the calculation.
Now, if ECalc or VCalc are open, after doing the "Apply", the calculation will automatically be done.

Include the spring parameter calculations as part of the suspension calculations.
Previously, if a change was done to any of the suspension (ie shock mounting or spring mounting) points it was required to manually recalculate the spring parameters.
Now the spring parameters will be recalculated as part of the suspension calculations.

Update suspension frequency calculations and use Hz instead of CPM.

Add the coil spring natural frequency.

Updated the trailing arm, semi-trailing arm and swing axle calculations and display.

Updated calculations to allow for LH and RH having different maximum bump (and droop) values.

Added spring, anti-roll bar and pushrod mounting points to the CMM tool.

V4.520E (Build 918.4) enhancements and bug fixes.

Allowed for more freedom in locating trailing and lateral links on upright.
Previously the trailing arm mounting points on the rear upright always had to be in front of the lateral link mounting points.

Redesigned the wheel input dialog when using Imperial dimensions.

Added a tolerance to the Watts linkage lateral links to accept links that not exactly the same length.
Although the lateral links should be identical in length, this will allow for minor differences.

Added the rim diameter to the Geometry Results.

Fixed a bug that sometimes caused the Display Control to fail when shown vertically.

V4.520G (Build 918.6) enhancements and bug fixes.

Fixed a bug that incorrectly calculated A-arm suspension points when referenced from apex.

If the spring data was not specified, the Rates calculation failed. Allow the calculation to continue, with zero rates.

V4.520H (Build 918.7) enhancements and bug fixes.

Fixed a bug in the CMM tool that incorrectly calculated toe.

V4.520M (Build 918.12) enhancements and bug fixes.

Increased the file history to 20 items.

Fixed the geometry calculations for strut with virtual a-arm, Jaguar and H-arm suspensions when specifying fixed roll centre.

Added the StaticKingpinOffset and StaticCasterOffset to results for a-arm type rear suspensions.

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Version 4.517 has a number of enhancements.

Thanks to all of those who made comments and suggestions.

In no particular order.

Added the bellcrank pivot points and the mounting points on the ends of the bellcrank arms to the Excel exports.
Thanks to Allar for this one.

Fixed up some issues with SusProg3D failing to connect with Excel.
Plus added some extra info messages to the Calc2Excel dialog.
Thanks to Chris and Allar for their help on this one.

With dual rate springs, when doing a rates calculation the first time, the initial spring rate was used for all bump points, instead of using the final spring rate for those bump points where the spring deflection was greater than the transition point.

Version 4.517B

Fixed a bug which hid the antirollbar correction factor.
Thanks to Bruce for this one.

Added the pushrod / pullrod suspension mounting point (S3D_Bellcrank_SuspensionXYZ) and the antirollbar arm / link pivot point (S3D_Antirollbar_ArmLinkXYZ) to the Excel exports.
Thanks to Allar for this one.

Version 4.517C

At large roll angles, the T-bar antirollbar would fail to converge to a solution. Fixed.
Thanks to Phil for this one.

Some of the TorqueArm and TorqueBar live axle configurations would not show up
in the Vehicle Configuration correctly.
Thanks to Jan for this one.

Version 4.517D

Updated the About box to show the latest available version.

Fixed a problem that prevented some Outlook users from using email to send registration details.

When using inches the value shown on the input forms was rounded to two decimal places instead of three.

Version 4.517E

Fixed a bug in the XYZ edit that required a double tab to move from one input to the next.

Fixed a bug that prevented pasting (using Ctrl-V) into a numeric edit.

Version 4.517F

Fixed a problem with the motion ratio type not reading correctly.
Thanks to Bruce for this one.

Version 4.517G

Fixed a problem with the bellcranks when the LH and RH shock arm offsets were not symmetrical.
When autocalcing the driveshaft universal joint position, the driveshaft length is now set to the 
distance between the universal joint centres.
Thanks to Jaime for these.

Version 4.517H

Fixed a problem which prevented the name of the selected geometry type being displayed in Vehicle Config.
Only effected live axle with 4 trailing links.
Thanks to Matt and Toni for this one.

Version 4.517J

Fixed a problem when using Settings -> Settings -> Display to show the Display Settings dialog, this sometimes caused SusProg3D to hang.
Thanks to Toni for this one.

Version 4.517K

Fixed a problem with OpenGL that raised a floating point overflow.
Thanks to Adrian for this one.

Fixed a problem that raised an error when opening a data file with axis settings different to the current axis settings.
Thanks to Bruno for this one.

Version 4.517M

Fixed a problem calculating trailing arm suspension when specified as swing axle.
Thanks to Gabriel for this one.

===================

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V4.516 notes All input forms and dialogs have been updated to display correctly with medium (125%) and large (150%) text size settings.

Version 4.516 adds additional functionality.

 Thanks to all of those who made comments and suggestions.

In no particular order.

All input forms and dialogs have been updated to display correctly with medium (125%) and large (150%) text size settings.

There are no functional changes or bug fixes in this release.

There is no change to the help file in this release.

Version 4.516B.

Fixed a bug with the registration dialog.

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V4.515 notes

Version 4.515A has a number of enhancements.

Thanks to all of those who made comments and suggestions.

In no particular order.

Added the top and bottom kingpin points, plus the point where the projection of the kingpin intersects the ground plane to the Excel exports.

 Improved the performance when updating large Excel spreadsheets.

The help file is now available as a PDF file download SusProg3D Help File

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V4.514 notes

Version 4.514 has a number of enhancements.
Thanks to all of those who made comments and suggestions.
In no particular order.

Fixed a bug in the leaf spring display. When the leaf spring is concave, it was drawn as a single straight segment instead of a curve.

Fixed a bug that caused the bellcrank axis autocalc calculation to fail if the shock mount and bellcrank pivot have the same chassis mounting lateral and vertical values.
Thanks to Mark for this one.

Fixed a bug that caused the semi-trailing arm calculation to fail if the trailing arm mounts are straight across the vehicle (in plan view).
Thanks to Scott for this one.

Updated the bellcrank axis autocalc calculation to allow for offsets in the bellcrank arms.

Previously, the bellcrank axis was calculated by using three points - the bellcrank axis point 1, the chassis shock absorber mounting point and the pullrod (or pushrod) attachment point on the wishbone (or upright) - to define the bellcrank rotational plane and then calculating the bellcrank axis to be normal (ie at right angles) to that plane. This was OK if there was no offsets in the bellcrank arms. Also there was no way to specify which way the bellcrank axis was orientated.

The new calculation now allows for any offsets in the bellcrank arms. The bellcrank pivot axis will be calculated such that a line from the shock absorber chassis mounting point to the bellcrank pivot axis forms a right angle; and a line from the pullrod (or pushrod) attachment point on the wishbone (or upright) to the bellcrank pivot axis forms a right angle.
This ensures that the shock absorber chassis mounting point lies on the rotational plane of the bellcrank shock arm; and the pullrod (or pushrod) attachment point on the wishbone (or upright) lies on the rotational plane of the bellcrank pushrod/pullrod arm. In the static position, this will eliminate any axial loading in the bellcrank bearings.
Additionally, the calculation uses the entered value of point 2 to determine the orientation of the bellcrank axis, and will update it with the calculated value.

If there are no offsets in the bellcrank arms then the axis calculated by the new method is identical to the old method.

When using older data files, and the bellcrank has offset arms, the bellcrank axis autocalc will be turned off so that the recalculation does not change the existing bellcrank axis.

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V4.513 notes

Version 4.513 adds additional functionality.
 Thanks to all of those who made comments and suggestions.
 All text descriptions and comments support Unicode.

Fixed length driveshaft weren't being set correctly and defaulted to sliding.

The ride frequency calculated in the Dynamic section should be the frequency in bump.

Some trailing arm configuration settings caused a calculation error.

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V4.512 notes

Version 4.512 has a number of enhancements.
Thanks to all of those who made comments and suggestions.
In no particular order.

Updated the form display, fonts and sizes of individual form components for Windows 7

Updated the Corvette style leaf spring functionality

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V4.511 notes

Version 4.511 adds additional functionality.
Thanks to all of those who made comments and suggestions.
In no particular order.

Added the " Lower lateral link, upper reversed A-arm,  twin trailing links rear suspension.
Thanks to Simon for this one

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V4.510 notes

Version 4.510 adds additional functionality and a few bug fixes.
Thanks to all of those who made comments and suggestions.
In no particular order.

Added additional set ups for double A-arm front suspension to allow for both upper and lower A-arms to be either "actual" or "virtual" A-arms.
Thanks to Jason for this one.

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V4.505 notes

Version 4.505 has a number of enhancements.
Thanks to all of those who made comments and suggestions.
In no particular order.

Improved the performance for semi-trailing arm bump and droop calculations.

The ride height locations have been updated to allow for specifying LH or RH location.

The layout of the ride height data in Excel has been updated to include all the LH and RH alternatives.
The help file has been updated with the new details, particularly the layout and number of cells required.
Thanks to Howard for this one.

Fixed a bug the prevented a trike having front wheel drive driveshafts.
Thanks to Matt for this one.

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V4.504 notes

Version 4.504 adds additional functionality.
Thanks to all of those who made comments and suggestions.
In no particular order.

Addition of recirculating ball steering for IFS where the tie rods connect directly to the Pitman and idler arms.

Version 4.504B.

Fixed a bug that caused semi-trailing arm bump calculations to fail .
Thanks to Leonid and Osvaldo for this one.

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V4.503 notes

Version 4.503 adds additional functionality and a few bug fixes.
Thanks to all of those who made comments and suggestions.
In no particular order.

The major enhancement is the addition of longitudinally located drag link steering for front live axle.
Thanks to Derek for this one.

For both lateral and longitudinal drag link steering the Pitman can now be positioned as required when in the steering is in the "straight ahead" position.

For both lateral and longitudinal drag link steering all calculations now now be done with the wheels turned.

For both lateral and longitudinal drag link steering the steering calculations now include the "toe out in turn" data.

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Version 4.502 has a number of enhancements.Thanks to all of those who made comments and suggestions.In no particular order. The mounting point of suspension items (shock, spring, pushrod, antirollbar) on an A-arm can now be referenced from either the A-arm chassis pivot axis or from the A-arm apex.Additionally, the mounting point can now be referenced from either the front or the rear A-arm link.Thanks to Steve at GRM for this one The mounting point of suspension items (shock, spring, pushrod, antirollbar) on a link can now be referenced from either the chassis pivot or from the suspension pivot. Added Front, Left, Rear, Right and Plan view orientation buttons to all menu tabs.

Version 4.502 has a number of enhancements.
Thanks to all of those who made comments and suggestions.
In no particular order.

The mounting point of suspension items (shock, spring, pushrod, antirollbar) on an A-arm can now be referenced from either the A-arm chassis pivot axis or from the A-arm apex.
Additionally, the mounting point can now be referenced from either the front or the rear A-arm link.
Thanks to Steve at GRM for this one.

The mounting point of suspension items (shock, spring, pushrod, antirollbar) on a link can now be referenced from either the chassis pivot or from the suspension pivot.

Added Front, Left, Rear, Right and Plan view orientation buttons to all menu tabs.

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Version 4.501 has a number of enhancements. Thanks to all of those who made comments and suggestions. In no particular order. windows 7 Professional is now correctly identified. Thanks to Ian for this one. When using the Windows Aero display functionality, the graphic screen copy function didn't work. The screen copy function can be accessing using either F6 or Control-C. With a virtual a-arm the front and rear links were not correctly identified, and the calculation failed. Addition checks and error messages added to check this. Thanks to Peter for this one. Added 4 leading link front axle suspension. Added all the lateral location options - Panhard rod, Watts and Mumford linkages for front solid axles. Thanks to Derek for this one.

Version 4.501 has a number of enhancements.
Thanks to all of those who made comments and suggestions.
In no particular order.

Windows 7 Professional is now correctly identified.
Thanks to Ian for this one.

When using the Windows "Aero" display functionality, the graphic screen copy function didn't work.
The screen copy function can be accessing using either F6 or Control-C.
bullet With a virtual a-arm the front and rear links were not correctly identified, and the calculation failed.
Addition checks and error messages added to check this.
Thanks to Peter for this one.

Added 4 leading link front axle suspension.
Added all the lateral location options - Panhard rod, Watts and Mumford linkages for front solid axles.
Thanks to Derek for this one.

Enhanced the recirculating ball steering to provide a way of specifying the Pitman arm offset.
Previously the Pitman arm was always positioned either straight forward (or straight backward).
Now the Pitman arm can be specified with an offset to enable it to be angled either inwards or outwards as required.
Thanks to Peter for this one.

Added a marker to indicate the chassis CofG location.
Thanks to Rob for this one.

V4.501B (Build 724.1)

Corrected a problem calculating trailing arm suspension types.
Thanks to Gabriel for this one.

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V4.500 notes Added option to draw the undertray. Although undertray input was added in V4.84A it was limited to the PitchCentre calculations and not included as part of the graphic display. , Added option to draw the chassis datum plane. , Added a tool to create the chassis datum from vehicle coordinates., Previously the chassis datum could be relocated longitudinally and/or vertically.

Version 4.500
Thanks to all of those who made comments and suggestions.
In no particular order.

 Added option to draw the undertray.

Although undertray input was added in V4.84A it was limited to the PitchCentre calculations and not included as part of the graphic display.

 Added option to draw the chassis datum plane.

 Added a tool to create the chassis datum from vehicle coordinates.
Previously the chassis datum could be relocated longitudinally and/or vertically.
This adds the ability to create the chassis datum in any position, including side rake.

 The major enhancement is the ability to specify three ride height control points.
This means that the chassis can be positioned with rake in both side and end views.
Three points are used for ride height reference - two at one end of the vehicle, and one at the other end.
The previous method only allowed for two points to be specified

V4.500B (Build 710.1)

 Updated SusProg3D Licence Server (Sawdust) to better handle TCP/IP messages.

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