/, Windsport Mylor/Shrimper care and maintenance – Ysella gets a centreboard make over

Shrimper care and maintenance – Ysella gets a centreboard make over

Near the end of 2014 sailing season Ysella was experiencing a few centreboard problems when lowering her centreboard. Unless released from nearly fully raised, the centreboard would not fully rotated into the down position. Winter came
and Ysella got her winter cover on and all thoughts of sorting the issue
disappear.

2015 arrived  and it was time to take the covers off and get things in order for a
great year of sailing and racing in Falmouth Harbour. Ysella is based at
Mylor harbour and sails off a mooring just in front of Restronguet Sailing
Club. She races with the Mylor Yacht Club on Friday evening when ever her
family owners are at home and is also used to provide RYA  keel boat courses and
sessions for Shrimper owners who want to improve their Shrimper sailing
/seamanship or Shrimper racing skills.

Start of the season and back on the mooring , Ysella look picture perfect ,
but of course the centreboard problem had not gone away and if anything it
was worse. A quick inspection of the winch wire and wheel, having removed
the cabin step, confirmed that was not the problem. A bit of Shrimper
webpage investigation  throw up a number of possible issues the worst being
contraction of the centreboard box due to the original ballast corroding and
expanding.

Nothing for it but to recover her on the road trailer and take a look.


Windsport’s mighty  micro tractor makes recovering Shrimpers onto a trailer
or trolley an simple slipway process but to remove the  centreboard called
for bringing in the big guns, and using a tele-handler she was lifted and
chocked so her centreboard removal could take place .

On inspection the  problem was simple, over the years the galvanising had
corroded or been worn away creating large rust areas that were expanding and
pressing against the side of the box.IMG_1179

Solution ? service the centreboard and make it good for the next 30 years,
clean the centreboard casing and while at it replace the centreboard pivot
bolt and hoist wire / rope.

With the centreboard transported down to the workshop  we set about removing
the rust, preparing the cleaned surface and applying a rust inhibitor . To
do a comprehensive job  we also removed the packing pads screwed either side
of the centreboard plate designed to reduce centreboard rocking and also the
stop pad on the leading edge which absorbs the plate when hitting the front
of the centreboard box.  The screws had been in there a long time so it took
some doing and a couple of them needed to be drilled out and re-threaded.

 

To seal the surface we applied  two layers of epoxy  with a roller rubbing
down between each layers to level off some of the hollows and bumps.

Final application was two coats of white antifouling which  should keep us
going for a number of years.

IMG_1217Working both sides of the plate means two application sessions for every
action, but it also allowed us to apply two layers on the edges as a bonus!IMG_1222

With the protection  bit done  it was question of replacing the side packing
pieces  and shock absorber pad on the leading edge.

The pivot bolt had a plastic insert that looked a bit worn so we replaced
that as well before lining everything up to go back into the box

The centreboard box itself was inspected and the obligatory  barnacles
removed while the internal surfaces were given two coatings of anti-fouling
as far up as we could reach.

Replacing the centreboard  was not quite as easy as  removal ! the use of a
vehicle jack and careful manipulation soon had the pivot bolt hole lined up
and the new bolt and rubber seals  inserted and tightened up.

By choice we have gone for a dyneema hoisting line rather than the original
1 x 19  stainless steel wire which showed signs of  breaking up where it
wound around the hoisting spindle.

All good and the keel support chocks are removed  the trailer is placed back
under the hull ready for lowering and relaunch.

With the cabin step replaced  we were ready for relaunch and trial sail.

Ysella’s  centreboard  problems have now been sorted and she is as good as
ever. The sailing season has been great  and the racing has been fun.

Soon Ysella will be recovered permanently  onto her trailer, washed down
ready for her winter cover and storage at the Windsport boat storage
facility alongside a number of her sister Shrimpers who sail in the area.IMG_1431

Lesson learnt, when a job needs doing get on with it rather than hoping it
will go away!!

Brian and Cookie Phipps

Shrimper 298 Ysella ( Cornish girls name meaning  Modest)

2017-01-31T15:47:45+00:00Shrimper, Windsport Mylor|Comments Off on Shrimper care and maintenance – Ysella gets a centreboard make over