Jabiru J450 Constructors Manual
Pre-Paint>Fuselage>Fit ventral fin and trim horn
Tuesday, April 6, 2010
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Finish the ventral fin
Sand the inside bottom rear quarter of the ventral fin. Mix around 200 grams of polyester
resin and add a few drops of hardener (take care not to use too much hardener or there may be
heat issues as it cures) and pour into the bottom of the ventral fin then prop the fin up at a 45°
angle while it cures.
Once the resin has cured drill a 12.5mm hole through at the marked location – this will be
your rear tie down point. Drill 2 drain holes, one at the front corner and one at the rear just in
front of the resin.
Cut out the marked area at the top rear – this is where the elevator drive arm will travel.
Store the ventral fin for later final fitting and painting.
This completes the
Pre-Paint>Fuselage>Fit ventral fin and trim horn
task.
Drain
holes
Resin
Cut out