HADRON H2 Owner’s Manual 2018
3
Always check mast rake with the forestay pulled tight. Note that this adjustment must
be carried out ashore – it is not allowed whilst racing (see class rules).
Even in light airs, some rake is required. As the wind increases, progressively more
rake is desirable (up to a metre in extreme conditions). With extreme rake, the sail is
depowered. A starting point for rake is as follows: with the forestay tightened to provide
about 75kg tension on the shrouds, the distance from masthead to top of transom
should be approximately 6300mm.
Some raking of the centreboard will be useful in offsetting any weather helm
engendered by raking the mast.
Rig Setup – Spreader configuration.
Start off with the spreader tips deflecting the shrouds outboard by about 25mm and
forwards by about the same amount: this allows the spreaders to restrain the sideways
and fore-and–aft bend in the middle of the mast. Mast bend characteristics may be
altered by changing this initial setup. For example, lighter helms may wish to shorten
the spreaders and/or rake the spreaders more aft; conversely, heavier or more athletic
helms may wish to lengthen the spreaders
Rig Setup – rig tension.
The spreaders are effective in controlling mast bend only if the rig is tensioned fully –
by pulling hard on the forestay tackle. In strong winds, some depowering effect can be
achieved by reducing rig tension so that the leeward shroud swings loose.
Toestrap adjustment
Before rigging the boat, adjust the toestraps at the forward end to suit your leg length
and preferred hiking position. Adjustment for height and reach is possible. Shorter
sailors may also want to adjust the lateral position of the middle toestrap plates. To do
this, drill a new 3mm hole for each of the two screws holding the plate. The original
holes will need to be filled in order to ensure that the buoyancy compartment is
watertight.
Rigging the H2
Most of the controls will have been rigged as far as possible prior to delivery. There are
4 control line cam cleats each side, mounted on the inner angle of the side deck, just
forward of the thwart. From inboard to outboard, these are:
a. Kicker, aka kicker or kicking strap (RED line)
b. Clew Outhaul (YELLOW line)
c. Cunningham (BLACK line)
d. Forestay (BLUE line)
The control lines for all the above are continuous.
The Hadron H2 is a straightforward boat to prepare for sailing:
1. Fit the wind indicator (if any) to the masthead.
Different techniques can be used to step the mast singlehanded: one approach is as
follows:
a. Lay the mast on the boat with the masthead facing aft.
b. Attach the shrouds to the deck fittings, after checking the rake pin position is
correct for the anticipated wind strength.
c. Slacken the forestay control to its maximum extent.
