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470trim

VIEWS: 1 PAGES: 3

									Measures              Measures
Mast Rake             mast position at top
Pre Bend              mast fore-aft bend

Nonvolatile Variables Controls               Effect
Mast Step             mast location
move fore:            moves fore             sail center moves fore, relieving weather helm
move aft:             moves aft              sail center moves aft, allowing pointing ?

Spreaders             mast curvature
shorten L:            increases              upper part of main opens
legthen L:            decreases              upper part of main closes

Volatile Variables    Controls               Effect                                Remarks
Rig Tension           jib shape:                                                   As the wind gets stronger, th
less rig tension:     deeper                 more power                            one needs to flatten the mai
more rig tension:     flatter                more pointing                         mast and bringing its top ba
                      mast pre-bend:                                               that you should start at the b
less rig tension:     increases              flatter main, more leach twist        for current wind condition an
more rig tension:     decreases              deeper main, less leach twist         If you reach end of this brac
                      mast rake:                                                   lower on the sidestay setting
less rig tension:     mast top moves aft     less overlap with jib, flatter main
more rig tension:     mast top moves fore    more overlap with jib, deeper main

Mast Puller (Choks)   mast bend                                                    With optimum wind condition
less choks            decreases              lower part of sail becomes flatter    have most power out of the
more choks            increases              lower part of sail becomes deeper     such conditions. As wind dev

                      C
High Volatile Variables ontrols              Effect
Outhaul               main bottom                                                  With optimum wind condition
more outhaul          flat                   less power, more pointing             have most power out of the
less outhaul          deep                   more power, less pointing             such conditions. As wind dev

Cunnigham             main top                                                     As the wind gets stronger, th
more cunningham       flat                   moves draft forward, opens leech      one needs to flatten the mai
less cunnningham      deep                   moves draft aft, closes leech         no cunningham at all for ligh

Vang                  mast bend                                                    As the wind gets stronger, th
more vang             increases              flatter main                          one needs to flatten the mai
less vang             decreases              deeper main                           no vang at all for light wind
            General Remarks
            Wind            both in boat crew on trapez both on trapez and higher
            Aim             speed        speed and point de-power

            Bulk tuning:        Rig tension and Choks
            Fine tuning:        Outhaul, cunnigham, vang




he wind gets stronger, the optimum shape of the main gets flatter. Hence
needs to flatten the main as wind gets stronger. Do this by bending the
t and bringing its top backwards (mast rake). Regarding rig tension this means
 you should start at the bottom of a side stay bracket as optimum setting
urrent wind condition and then release forestay tension as wind picks up.
 u reach end of this bracket and need more mast rake/bend then go one
 r on the sidestay settings.




 optimum wind conditions (crew on trapeze and boat flat) one would like to
 most power out of the sail. Hence we use most choks (deepest main) on
 conditions. As wind deviates from these conditions we use less choks to flatten sail


 optimum wind conditions (crew on trapeze and boat flat) one would like to
 most power out of the sail. Hence we use deepest main (looser outhaul) on
 conditions. As wind deviates from these conditions we pull on outhaul to flatten sail

he wind gets stronger, the optimum shape of the main gets flatter. Hence
needs to flatten the main as wind gets stronger. Thus we start with
unningham at all for light wind and pull it gradually as wind picks up

he wind gets stronger, the optimum shape of the main gets flatter. Hence
needs to flatten the main as wind gets stronger. Thus we start with
ang at all for light wind and pull it gradually as wind picks up
                                     Tension
Wandt No Rig Scala   Rake   Pre-Bend Forestay Sidestay   Remarks
   1
   1
   2
   2
   3
   3
   4
   4
   5
   5
   6
   6
   7
   7
   8
   8
   9
   9
  10
  10
  11
  11
  12
  12
  13
  13
  14
  14
  15
  15
  16
  16
  17
  17

								
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