Hobie University, NAHCA
Page
23
31 Mar 02
Hobie 18 - Rigging and Tuning Guide
by Bob Mimlitch
This guide will help get you and your 18 in the ballpark, but remember it is only a guide, there are many ways
to sail a Hobie fast.
Rigging and Setup
Rig Tension
Not too tight, eased enough so mast rotates freely (
≈
4" to 5" movement in shroud).
Mast Rake
Don't rake it back, start at the third hole from bottom of shrouds and tighten forestay.
Diamond Wires
Light air - tight for more draft and power.
Heavy air - loose for more mast bend, flat sail and higher speed.
Rudders
Parallel, no toe in or out. Shape the trailing edge into a thin but flat edge (
≈
1/16”).
Tramp
Tight, tight, tight.
Jib Luff Tension Tighten mainsheet to its upwind setting then set the jib luff as indicated below.
Batten tension
Just snug, except for the top three which should be tight in light to moderate air.
Always release the batten tension before storing your Dacron sail.
Sailing Upwind
Light Air
Main
Mast Rotation Point at leeward shroud.
Downhaul
Just smooth (set with main sheeted lightly).
Outhaul
Bottom batten 1" to 2" draft.
Traveler
Centered.
Mainsheet
Light, do not over sheet as sail will become too flat and hook to windward.
Jib
Luff Tension
Just smooth (set on beach with main sheeted for conditions, see above).
Traveler
Four holes visible to the rear of the traveler.
Jib Sheet
Do not over sheet the jib as it will cut off the air flow to the main.
Tiller
Foot (sail a little further off the wind) in light air. Steer so that leeward.
tell tales are flowing but on verge of stalling if you foot much more.
Balance
Bows depressed, crew to leeward, crew and skipper on crossbar or bow.
Moderate Air
Main
Mast rotation
Point at leeward shroud.
Downhaul
Tight (set with main sheeted normally).
Outhaul
Bottom batten 0" to 1" draft.
Traveler
Centered.
Mainsheet
Tight.
Jib
Luff Tension
Just tight (set on beach with main sheeted for conditions, see above).
Traveler
Near the rear of the traveler to open the slot.
Jib Sheet
Tighter in smooth water - Ease in choppy water.
Tiller
Steer so that leeward tell tale below H is flowing but on verge of stalling.
Balance
Crew and skipper on windward hull and forward, boat level.
Heavy Air
Main
Mast rotation
Point at the leeward shroud.
Downhaul
Very tight, continue to tighten to keep hull from flying too high.
Outhaul
Tight.
Traveler
Centered, move 6" to 12" out if the hull continues to fly too high.
When you travel out, ease the jib to keep the slot open.
Mainsheet
Very tight, keep the sail flat. Travel out rather than sheeting out in a race.
Jib
Luff Tension
Tight (set on beach with main sheeted for conditions, see above).
Traveler
Rear, to induce jib twist-off.
Jib Sheet
Tight.
Tiller
Sail closer to the wind and steer high in the gusts rather than sheeting out.
Balance
Boat level, crew and skipper trapezed as required to keep hull skimming.