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Terminology - mytrims.com

CONTENTS
mybase
myboom down
myboom height
myboom length
myboom
myclam cleat position
myclewgap down
myclewgap
mydown buoy (not in use yet)
myextension
myfin position
myfront straps' inserts (not in use yet)
myfront straps
myharness lines length
myharness lines position
myheadgap
myleech 1-2
myleech 2-3
myleech 3-4
myluff
myrace harness hook
myskill
mystance center
mystance center (not in use yet)
mystance
mytackgap
mytail straps' inserts (not in use yet)
mytail straps
mytrack
mywave harness hook

mybaseto the top
Gap from bottom of mast to bottom of tack/tack pulley (mybs)
 
mybase value is myextension (extension + joint) - mytackgap.

Mytrims provides this value automatically on the basis of mytackgap and myextension length.
  
myboom downto the top
Gap from front end of mast to clew in down wind position(mybd)
 
The value is compatible with the boom/boom lenght values given by the sail manufacturers.

The value is calculated automatically: myboom lenght - myclewgap down.
  
myboom heightto the top
Boom height from board deck to bottom surface of boom grip (mybh)
 
Measure the distance from the board deck to the down surface of the boom grip at a straight line from the front end of the mast to base plate. Please see the picture.
  
myboom lengthto the top
Gap from front end of boom to back end of boom (mybl)
 
Measure the distance similarly with myharness lines position from the front end of the boom as shown in the picture. Please always try to outhaul clew into back end of boom if possible. The myboom lenght value is normally compatible with the boom length provided by the manufacturer.

If there is a gap between the back end of the boom and the clew (outhaul), please fill in the myclewgap value. That way mytrims.com can calculate myboom value that is compatible with the boom/boom length given by the sail manufacturer.
  
myboomto the top
Gap from front end of mast to clew (myb)
 
The value is compatible with the boom/boom lenght values given by the sail manufacturers.

The value is calculated automatically: myboom lenght - myclewgap.
  
myclam cleat positionto the top
Clam cleat position from front end of mast to clam cleats (myccp)
 
Clam cleat position from front end of mast to clam cleats (myccp)
  
myclewgap downto the top
Distance from back end of boom to clew in down wind trim (mycgd)
 
Mytrims.com returns automatically myboom down value that is compatible with the boom lenght/outhaul value given by the sail manufacturer.

  
myclewgapto the top
Distance from back end of boom to clew (mycg)
 
If there is a gap from back end of boom to clew, submit the myclewgap value. See the picture.

Mytrims returns automatically myboom value that is compatible with the boom lenght/outhaul value given by the sail manufacturer.

If myclewgap value is not submitted the myboom value is same as myboom lenght.
  
mydown buoy (not in use yet)to the top
Jibing point marked into boom, marking's distance from front end boom (mydb)
 
As the mark in the lee side of boom visually passes by the down buoy in normal riding position you will reach the down buoy.

Please see the picture.
  
myextensionto the top
Lenght of extension + mast foot (myext)
 
Connect the mast foot to the mast extension. Measure total length of extension + mast foot, as shown in the picture.

The value is needed in order to return automatically mybase value that is necessary for repeating other members' sail trim.
  
myfin positionto the top
Distance from tail to back end of fin.
 
Distance from tail to back end of fin.
  
myfront straps' inserts (not in use yet)to the top
Front foot straps' 1. insert, distance from tail(myfsi)
 
Front foot straps' 1. insert, distance from tail(myfsi)
  
myfront strapsto the top
Front foot strap inserts in use from tail(myfs)
 
Give also (mystance)value that is distance from tail foot straps' front inserts to front foot straps' back inserts (myst)
  
myharness lines lengthto the top
Gap from bottom surface of boom grip to harness lines upper surface (myhll)
 
Measure gap from boom's bottom surface to harness lines upper surface as shown in the picture.

The value is uniform regardless the type of harness lines or the way they are placed to the boom. If the distance of harness lines straps is changed, the value will change.

Mytrims.com recommends to use 10 cm gap between harness lines straps.
  
myharness lines positionto the top
Distance from front end of boom to center of harness lines balance point (myhlp)
 
Measure the distance from the front end of the boom (= front end of mast) straight to the center of the balance point of the harness lines. Use a line tied to the boom on the both sides at the center of harness lines straps as shown in the picture in order to get an exact value.

Be sure that the harness lines are placed symmetrically on both sides of the boom. Check also out that the straps of the harness lines are equally apart from each other on both sides of the boom.
  
myheadgapto the top
Gap from sail head to head strap (give only when the head is adjustable) (myhg)
 
Measure the distance if the head is equipped with the head adjuster strap, in order to provide compatible information for other mytrims.com members. It is useful to save the value for your own use as well.

If the head is not equipped with the head adjuster the value is 0.

Please see the picture.
  
myleech 1-2to the top
Distance from front end of mast to wrinkle at leech at the middle of 1st and 2nd batten from head (myl 1-2)
 
Together with mytackgap this value enables to copy other members' rig trim.

Mark the point where wrinkle starts with tape or paint pen as shown in the picture.
  
myleech 2-3to the top
Distance from front end of mast to wrinkle at leech at the middle of 2nd and 3rd batten from head (myl 2-3)
 
Together with mytackgap this value enables to copy other members' rig trim.

Mark the point where wrinkle starts with tape or paint pen as shown in the picture.
  
myleech 3-4to the top
Distance from front end of mast to wrinkle at leech at the middle of 3rd and 4th batten from head (myl 3-4)
 
Together with mytackgap this value enables to copy other members' rig trim.

Mark the point where wrinkle starts with tape or paint pen as shown in the picture.
  
myluffto the top
Mast length + mybase (myl)
 
The myluff value is compatible with every extension, regardless of the extension type.

The value is not always equal to the luff value provided by the manufacturer, because sail and extension constructions vary and the manufactures do not use the luff value uniformly.

Mytrims returns the value automatically on the basis of the mast lenght, myextension, and mytackgap values
  
myrace harness hookto the top
Race harness hook height from board deck (myrhh)
 
Race harness hook height from board deck (myrhh)
  
myskillto the top
Indicates your skill level (mys)
 
Indicates your skill level (mys)
  
mystance centerto the top

 
  
mystance center (not in use yet)to the top
Stance center distance from tail (mystc)
 
The value will be returned automatically in the future. Mytrims.com can provide relation between mytrack, mystance center and myharness lines position in order to enable analysis and comparison of surfing styles between members of mytrims.com.

The values mentioned above will enable analysis of mypointing style and myreaching style
  
mystanceto the top
Distance from tail foot straps' front inserts to front foot straps' back inserts (myst)
 
Measure the value from the middle of insert skrews.

Mytrims.com will provide this value automatically in the future. Meanwhile please add the value to the form in trim phase 3.
  
mytackgapto the top
The shortest distance from board deck to bottom of tack/tack pulley (mytg)
 
The measure point depends on the eyelet/tack pulley construction. Please see pictures.

The mytackgap value is needed to calculate the mybase value (please see mybase help) which enables mytrims.com to provide compatible trim data to be used among mytrims members.
  
mytail straps' inserts (not in use yet)to the top
Tail foot straps' 1. insert from tail, distance from tail(mytsi)
 
Tail foot straps' 1. insert from tail, distance from tail(mytsi)
  
mytail strapsto the top
Tail foot strap inserts in use from tail (myts)
 
Give also (mystance)value that is distance from tail foot straps' front inserts to front foot straps' back inserts (myst)
  
mytrackto the top
Mast position from tail to center of mast/mast (myt)
 
Measure the distance from tail and mark the most used point to board deck.

The mytrack scale has in some boards been printed to deck. Check out that the scale is correctly placed.

  
mywave harness hookto the top
Wave harness hook distance from board deck (mywhh)
 
Wave harness hook distance from board deck (mywhh)
  

Mytrims.com is designed by Heikki Ilvessalo and Lasse Ilvessalo. © 2001-2017 Heikki & Lasse Ilvessalo