Just fixed a bug affecting string controls such as 'project name' and 'chart y axis'. The user wasn't able to change the values for these fields due to a check for isNaN (is not-a-number) which I put in a couple weeks ago.
Checking for isNaN was supposed to apply only to integer and float fields and ignore letters entered in those controls. Unfortunately, I didn't test well enough, the test was ignoring letters in string controls as well.
Anyway, sorry for the inconvenience! And please me know if you see any other problems
Development updates and other things
Tuesday, October 1, 2013
Monday, September 16, 2013
- fixed contact-patch-below-ground bug (thanks Cheapracer)
- added mac strut dimension highlighers: left/right spindle length
- moved to jquery 2.0, vsusp no longer supports IE8 and earlier
- made close window message simpler
- significant cleanup of code in draw functions
- updated mouseover text for strut axis inclination
- fixed handling of bad input values (eg. text in float field)
- improved noscript message alert box
Bug fix, dim highlighters, cleanup, etc
Just released a new version of VSusp
Contact patch below ground: this one has a fix for an occasional bug that caused the tire contact patch to end up below ground in some cases for double wishbone suspensions.
Mac Strut spindle length dimension highlighters: I also added two dimension highlighters for Macpherson strut suspensions: left spindle length and right spindle length. Hovering over the respective input boxes will show the highlighters on the diagram. I believe the only other two dimension highlighters that need to be added are left and right strut lengths.
No more support for IE8 and earlier: I updated to Jquery 2.0 hoping that there would be a decent speed improvement for Firefox. Looks like there's no perceptible change, but it's good to update once in a while anyway. The new version of jquery doesn't support IE 8 and earlier, so now neither does VSusp.
Close window message: I simplified the message that pops up when you're about to close the window. If this message is annoying, just let me know and I'll either get rid of it or make it possible to turn it off.
Better handling of text in integer/float fields: before, if the user would enter a letter into an input field which was expecting a number, this would mess up the diagram until the value was changed back to a number. Now the text value is just ignored and the input field reverts to the previous value
Minor things that aren't really noticeable: updated the noscript message alert box that shows up if scripts are disabled. Also cleaned up a decent portion of the code that handles drawing. Updated mouseover text for 'strut axis inclination' input
Contact patch below ground: this one has a fix for an occasional bug that caused the tire contact patch to end up below ground in some cases for double wishbone suspensions.
Mac Strut spindle length dimension highlighters: I also added two dimension highlighters for Macpherson strut suspensions: left spindle length and right spindle length. Hovering over the respective input boxes will show the highlighters on the diagram. I believe the only other two dimension highlighters that need to be added are left and right strut lengths.
No more support for IE8 and earlier: I updated to Jquery 2.0 hoping that there would be a decent speed improvement for Firefox. Looks like there's no perceptible change, but it's good to update once in a while anyway. The new version of jquery doesn't support IE 8 and earlier, so now neither does VSusp.
Close window message: I simplified the message that pops up when you're about to close the window. If this message is annoying, just let me know and I'll either get rid of it or make it possible to turn it off.
Better handling of text in integer/float fields: before, if the user would enter a letter into an input field which was expecting a number, this would mess up the diagram until the value was changed back to a number. Now the text value is just ignored and the input field reverts to the previous value
Minor things that aren't really noticeable: updated the noscript message alert box that shows up if scripts are disabled. Also cleaned up a decent portion of the code that handles drawing. Updated mouseover text for 'strut axis inclination' input
Monday, September 2, 2013
Updates
Just added a couple updates which I've been wanting to put in for a while. These were both suggested by Cheapracer on the Locost Builder forum.
Added type-in support for roll and bump controls
Now, it's possible to just type in values in the bump/droop and roll angle inputs. Before, the only way to change the values was to drag the arrow controls on the graph.
Added control for adjusting roll and bump together
There's now a free-drag control on the graph. Left/right movement adjusts roll angle, and up-down movement adjusts bump/droop. This may make it easier to see how the vehicle rolls around a particular point, such as the roll center.
Thursday, August 29, 2013
Macpherson strut added
Yesterday I uploaded a new version of VSusp which supports Macpherson strut as a suspension type.
Here's a example project link
Took a while!
Getting the implementation done took a while - longer than I had hoped. I had to modify and clean up a decent portion of the base code in order to support both suspension types. Lots of little things cropped up here and there. For example, in double wishbone, the left and right KPI values are equal and stay constant with suspension movement, so I had only one value to output and could calculate KPI during the early knuckle calculation. But in Mac strut, KPI varies as the strut changes length, so I needed two outputs (left/right) and had to calculate KPI at the end of the suspension calculations.
Changes to the project controls:
Frame tab:
Control arm tab:
Knuckles tab:
Up next:
Found problems?
If you find a bug which isn't mentioned in the known problems, feel free to mention it in the comments or send a message to admin@vsusp.com. Suggestions are always welcome, and they help me to make VSusp more useful.
Thank you!
Finally, a big thank you to everyone for the nice words and the suggestions in general!
Here's a example project link
Took a while!
Getting the implementation done took a while - longer than I had hoped. I had to modify and clean up a decent portion of the base code in order to support both suspension types. Lots of little things cropped up here and there. For example, in double wishbone, the left and right KPI values are equal and stay constant with suspension movement, so I had only one value to output and could calculate KPI during the early knuckle calculation. But in Mac strut, KPI varies as the strut changes length, so I needed two outputs (left/right) and had to calculate KPI at the end of the suspension calculations.
Changes to the project controls:
Frame tab:
- "suspension type" - obviously Macpherson strut is now an option. In the project link, double wishbone is 0 and Mac strut is 1.
Control arm tab:
- No upper control arm length input for Mac strut.
- Added outputs "left strut length" and "right strut length"
Knuckles tab:
- No upper ball joint input for Mac strut.
- Added input "X distance between hub and strut axis". If knuckle's hub surface is vertical (Y), this value is the distance along X (perpendicular to the center of the hub) to the center of the strut. This value determines how far inboard/outboard the strut sits in relation to the hub. It's easier to visualize by looking at the dimension highlighter as you mouse over the control.
- Added input "strut inclination angle". A strut axis which is parallel to the hub surface has a 90 degree inclination angle.
- Added output "X loc of strut axis relative to lower ball joint". This works like "X distance between hub and strut axis", except that this is calculated at the lower lower ball joint. A positive value means the bottom of the strut axis is inboard relative to the lower ball joint.
- Added outputs for left and right KPI
- Added outputs for left and right spindle lengths. I still need to set up the dimension highlighters for these outputs for Mac strut. The spindle length dimension highlighter works for double wishbone, so that can give you an idea in the meantime
Up next:
- Finish dimension highlighters for strut length and spindle lengths
- Add type-in support for bump/droop and roll
- Add control for adjusting roll and bump at the same time
Found problems?
If you find a bug which isn't mentioned in the known problems, feel free to mention it in the comments or send a message to admin@vsusp.com. Suggestions are always welcome, and they help me to make VSusp more useful.
Thank you!
Finally, a big thank you to everyone for the nice words and the suggestions in general!
Wednesday, August 28, 2013
Tuesday, August 27, 2013
- feature: added MacPherson Strut (thanks Oli):
- add some mac strut dimension highlighters (in prog)
- add mouse position indicator to graph
- update calc window for mac strut
- fix controls display/hide on toggle front/rear susp view
- disable double wishbone dim highlighters when in mac strut mode
- mac strut scrub radii routine
- fix bug: kpi lines not disappearing on reset trim
- add mac strut secondary calc routines: instant centers, roll center, kpi left/right, spindle length left/right
- improve handling of unused output controls
- fix ground_y bearing angle problem
- update tooltips in template
- add some trig utility functions
- mac strut geometry functions and robustness
- remove some unused functions, cleanup
- add mac strut steering knuckle polygon points
- copy wishbone calc routine to be modified for mac strut
- update controls displayed for mac strut vs double wishbone
- added controls and vars for mac strut
- added Macpherson Strut to suspension types
- updated help page
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