Trim 420 Legend

  Action Button Menu
Hull points  
  faFixpointA0 A0 Pütting Left
  faFixpointB0 B0 Pütting Right
  faFixpointC0 C0 Forestay attachment point at hull
  faFixpointD0 D0 Mast foot
  faFixpointE0 E0 Attachment point of Controller at hull
  faFixpointF0 F0 Measurement point at stern
Rig points  
  faFixpointA A Spreader end point (left)
  faFixpointB B Spreader end point (right)
  faFixpointC C Attachment point of forestay and shrouds at mast
  faFixpointD D Spreader attachment point at mast
  faFixpointE E Attachment point of Controller at mast
  faFixpointF F Mast top (main sail halyard fitting)
Model params  
  faVorstag V0 Forestay
  faWante WA Shroud
  faWanteOben WO Shroud upper part (Wante Oben)
  faWinkel Wi Angle of mast (lower part)
  faSalingH SH Spreader height
  faSalingA SA Spreader distance (Abstand)
  faSalingL SL Spreader length
  faSalingW SW Spreader angle (Winkel)
  faController Co Controller
  faMastfallVorlauf MV Mastfall = F0F - Mastfallvorlauf
Output params  
  faMastfallF0C F0C Distance F0 - C
  faBiegung Bie Displacement (Bending) of mast in point D
View params  
  faPan Pan panning of the graph (offset x, y)
Memory slots  
  faTrimm0 T0 Memory for base trim 0
  faTrimm1 T1 Memory for trim 1
  faTrimm2 T2 trim 2
  faTrimm3 T3 trim 3
  faTrimm4 T4 trim 4
  faTrimm5 T5 trim 5
  faTrimm6 T6 trim 6
  fa420 420 example-trim 420 (trim 7)
  faLogo Logo Logo-trim (trim 8)
Memory operations  
  faMemoryBtn M remember current state
  faMemoryRecallBtn MR return to remembered state
  faUpdateTrimm0 ct0 override trim 0 in main memory
  faCopyAndPaste cap override current trim in memory
  faCopy cti Copy Trimm-Item to the clipboard
  faPaste pti Paste from clipboard, Trimm-Item or Trimm-File
  faCopyTrimmFile ctf Copy Trimm-File to clipboard
  faReadTrimmFile rtf Read Trimm-File if present
  faSaveTrimmFile stf Write Trimm-File-Auto
      Read Trimm-File-Auto (sometimes automatically at program startup)
Spreader type  
  faSalingTypFest fs fixed Spreader-Tetrahedron (normal case)
  faSalingTypDrehbar ds pivoting spreaders (Drehbare Salinge)
  faSalingTypOhne os without spreaders (like Cadet class)
  faToggleTrimmData data Data display on/off
  faToggleTrimmDiff diff Difference display on/off
  faToggleLanguage lan Language toggle
  faActionPageM page number button in top left corner
  faActionPageP page number Button in top right corner
  faActionPageE PE Page Escape
  faActionPageX LP Last Page
Background and Text  
  faCycleColorSchemeP c+ color scheme plus
  faCycleColorSchemeM c- color scheme minus
  faDemo mod toggle Modus between Demo/Pro
  faRggBogen B draw mast as Bogen or as Zweischlag
  faRggHull HL display of hull on/off
  faRggKoppel Ko display of Koppelkurve on/off
Touch bar  
    upper Rotation Z
    lower Zoom
    left Parameter +/- 10
    right Parameter +/- 1

You can choose Hull points or Rig points as zero point, the center point for rotations, the point around which the the graph can be rotated.

Hull points (coordinates) are fixed values (read from storage) and - with exception of D0 (D0X) - are not directly editable within the program.

Rig points are computed values. (Just the mast-length values will be loaded/read.)

The selection of the Model parameter is of course an important selection. Forestay (VO), Shroud (WA), Spreader Height (SH) and Spreader Distance(SA) are most often used. Only Input-Parameters are listed under Model params. The current value of a parameter can be changed with the mouse wheel or using the touch bar.

Output params are similar to Model-Parameters. But cannot be directly adjusted at the real boat. Attention: When you change these parameter values - Forestay and Shroud will change to fit.

Under View params only Pan is listed. Other view-parameters like Zoom and Rotations don’t need to be selected, because they are active all the time. And - as mentioned above - the pivot point for rotations of the model can be selected with the buttons for rig or hull points.

The Memory slots T1 through to T6 have been added only recently. And reading and writing of data is under review.

The selection of the Spreader type has also been added back into the app recently. This is important for the Cadet class. Supporting the Cadet with a built in memory slot of example data may be coming soon. It was not necessary for the 420, where spreader type fixed is the default.

Navigation is about the selection of the current page of buttons. Not all buttons fit on one page, so several pages are needed. On the desktop you can use keyboard shortcuts, which will make navigation easier or even unnecessary.

The color of background and text can be changed too. I hope you will find a combination that looks decent.

The demo mode listed under Options needs explanation. In Demo mode you are only concerned with the change of one parameter. When selecting a different parameter, the state of the model will be automatically reset. This is not the case in Pro mode. Other names for Demo/Pro would be Rookie/Expert. Important is only that you know what it means. If you find yourself in Demo mode, it is probably necessary to change over to Pro mode (with click on button mod), to continue ‘work’.

The Hull can be shown or hidden. Normally you do not need to show it. But it is useful when first looking at the graph. As of today there is only one hull model - of the 420 class - included in the app. You could help out with providing better data for other classes.

The Touch bar is used to change the value of the current parameter on the touch screen. This is what it is all about! The desktop application uses the wheel of the mouse or the keyboard But with the touch screen it can be done as well. You will need to find out what the touch bar looks like, and how it works. Tip: Try to touch the gray area between the buttons gently. (Not everyone can master it. You have to do it slowly, and at the same time watch the display of the value of the current parameter change.)

Rotation about Z-axis and Zoom do not work as expected on a touch screen device. Instead, you have to use the upper or lower touch bar for this. However, you can control the Rotation X / Y directly with a touch move over the center of the screen - with just one finger, or by dragging the mouse.

It is entirely possible that the concept of operation will change in the future. It may perhaps work exactly as you would expect. It depends to some extent on improved capability of the tools I use. Until then I hope you can cope with the touch bar.