Trade-A-Boat 492 2017

(Grace) #1

there’s only a 10mm width
increase. However, at
532mm tall it’s a 29mm
increase, though overall still
comparable with the old 12hp
single likely to have been
originally fitted to a yacht
like a Clansman 30. The
engine bearers will have to
be lengthened but even so
the 29 shouldn’t adversely
encroach on cabin space.
Sole ofers a choice of
Italian-made Twin Disc/
Technodrive or Japanese
Kanzaki mechanical
gearboxes. The latter has a
seven-degree down angle


at the gearbox output
flange and this may create
installation issues as the old
engine bearers would have
likely been designed for
straight-output flanges. The
’box also adds 4.0kg to the
overall weight. The standard
TMC-40 ’box has ratios of
1.96:1 to 2.61:1 – the higher
ratio may enable an existing
prop to be used, though
the prop shaft may need
enlarging to cope with the
additional engine torque.
Sole ofers a standard
instrument panel including
analogue tachometer,

temperature gauge, digital
engine hours and the usual
low oil pressure and high
coolant temperature warning
lights and alarms. The deluxe
panel gains a voltmeter
and oil pressure gauge but
measures 250 x 150mm –
perhaps a bit large for the
cockpit of a relatively small
cruising yacht.

THE WRAP
Vibration transmitted
through a hull may massage
the flab away but on long
voyages under power or
motor-sailing it’s tiring

and for peace of mind less
vibration is better. What’s
the point in investing in a
classic yacht if the engine is
too rough?
The Mini-29 provides a
good blend of torque and
power in a compact package
that can only value-add to a
classic cruising yacht. And
it’s well priced compared to
the competition.
For more details, contact
the Australian agent,
Headland Engineering, on
(02) 9939 1966 or email
info@headlandengineering.
com.au.

quick specs


Sole Mini-29

ENGINE TYPE Three-cylinder
indirect injection diesel
RATED BHP/MHP* 26.8/27.2
at 3600rpm
MAX. TORQUE (NM) 53 at
2000-2500rpm
PISTON DISPLACEMENT
952cc
BORE X STROKE 76 x 70mm
WEIGHT (DRY W/
GEARBOX) 105kg
*Brake horsepower/metric
horsepower or PS

sea trials


RPM MAX TORQUE (NM) BHP ABSORBED BY PROP ACTUAL L/H
750 33 3.0 ----
1000 42 4.0 0.2
1500 50 6.0 0.4
2000 53 8.7 0.9
2500 53 11.4 1.6
3000 50 19.0 2.9
3600 47 26.8 4.7

Note the rapid torque rise from idle and how much torque is still available at maximum
output. Because this engine has mechanical injection I recommend not running it
continuously below 1500rpm or above 3000rpm.

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