Quarter Tonner - Garrykennedy Sailing Club

Report
My Experiences of
FINDING, REBUILDING
AND UPGRADING
A
“WORN-OUT”
QUARTER TONNER
©Ian Travers
QUARTER TONNERS
Photo Credit- Bob Bateman
Presentation Format
• “What is a Quarter Tonner”?
• Project 1 ‘Bandit’
• Project 2 ‘Per Elisa’
–
–
–
–
How/where do you find a Good Quarter
Have the Boat – what next?
An ‘Average Quarter Tonner” approach to decision making.
Piecing it all together
• Rig
• Sail Area
• Keel
• Boat Building
• Costs
• Conclusions
Igor
WHAT IS A “QUARTER TONNER”?
• International Offshore Rule
•24-27 feet long
• 1300 kgs to 1700 kgs
•Crew of 5
•Trailor sailor-able
•Budget to suit all tastes
•Modified in recent years
•Proper little boat
What makes a Good Quarter tonner!
• A relatively long boat- Average size is 7.7 m... Big is beautiful!
Hull Speed =1.34 x Sqr Root of LWL
Fast = 1.34 x Sqr Root of a “Long boat”
•Weight- An all up weight of 1400kgs approx.
•Pedigree- it should be easier to make a fast boat faster!
• Non-exotic construction. (HF)
•Simple rig plan
•Powerful sail plan
•Stability
•Doesn’t have to be but she should look nice!
Note: HF is Hull factor and is a significant component of
the IRC rule. In broad strokes it is the rules way of
penalising boats which are stripped out/ ‘non cruisey’ or
made from an exotic material- Kevlar/ Carbon composite
etc. Google Hull factor + IRC rule
A PROPER BOAT WITH PERSONALITY!
QUARTER TONNER REBUILD PROJECT
How big is too big!
Bullit in Feb 1980
Bullit in Feb 2012
Peter Morton’s ‘Bullit’ QTC winner June 2012
THE BANDIT PROJECT
Modified Bolero 25 Production QTer
Photo Credit- Bob Bateman
OPTIMISATION PLAN
• Removed some interior- primarily from the ends. (Weight)
•Worked out upwind and downwind SA’s
•Built in new chain-plates for new swept-back single spreader Rig.
•Full aesthetics refit.
•Bottom fairing
•“Designed”, cast and fitted lead shoe. (70 kgs)
•Found a second hand mast to fit the bill!
•With the help of some friends found the
right place to stick it in the boat!
Note: From memory, the mast went aft
about 200mm. This is a must if you go for a
non overlapping sail plan as it helps
maintain balance.
•Fun Boat
• Very competitive
record.
•Very economical to
run.
•Great resale
potential
Along came a Tiger!
PER ELISA PROJECT
CUSTOM QUARTER TONNER
CECCARELLI 1992
Where do you find a good Custom built
Quarter tonner?
ciao, spero che tu sia ancora tutti svegli!
Have the Boat- What next!
Engine removed. All Qters now gone to
outboards.. No prop drag and permits
an heavier keel. Significant reinforcing
to bilge/floor reqd for heavier keel.
BLANK CANVAS
READY TO GO!
The “AVERAGE” Quarter Tonner Approach
To Aid Decision Making
Updated 17 Feb '12
QUARTER TON RATING COMPARISIONS
Paramater
Espada
Tiger
Aguila
AC
Cote
Alice II
Per Elisa Cert
Per Elisa T1
Actual
Average
Max
Min
STD Dev
TCC
0.902
0.902
0.903
0.912
0.907
0.907
0.897
0.898
0.905
0.90
0.912
0.897
0.005
HF
8.6
8.9
8.9
9
9.1
8.8
8.7
8.7
8.8
8.83
9.1
8.6
0.169
1.008
1.01
1.017
1.008
1.005
1.005
1.005
1.01
1.017
1.01
0.004
RF
1.01
1.008
OH F
1.04
1.05
LH
7.73
7.75
7.7
7.7
7.75
7.7
7.63
7.63
7.62
7.69
7.75
7.63
0.047
LWP
5.73
5.66
5.7
5.73
5.6
5.88
5.64
5.64
5.56
5.68
6.2
5.6
0.087
1.04
1.04
0.006
B
2.8
2.7
2.69
2.8
2.78
2.7
2.61
2.61
2.61
2.70
2.8
2.61
0.077
W
1406
1524
1315
1398
1290
1407
1300
1300
1300
1360.00
1524
1300
81.363
IRC DISP
1885
2005
1875
1921.67
72.342
DLR
279
308
270
278
281
258
275
275
287
279.00
308
270
14.102
D
1.45
1.57
1.48
1.47
1.48
1.53
1.5
1.5
1.61
1.51
1.57
1.45
0.038
BO
0.48
0.48
0.45
0.51
0.47
0.37
0.44
0.44
0.48
0.46
0.51
0.37
0.042
X
0.1
0.07
0.07
0.09
0
0
0
0
0.06
0.04
0.043
h
0.04
0.03
0.03
0.04
0
0
0
0
0.02
0.02
SO
1.52
1.61
1.55
1.46
1.68
1.45
1.55
1.55
1.58
1.55
1.61
0.95
0.075
Y
0.22
0.32
0.34
0.23
0.38
0.33
0.36
0.36
0.28
0.31
0.38
0.23
0.060
P
9.75
9.97
9.74
10
9.89
9.99
9.75
9.75
9.74
9.84
10
9.74
0.120
E
3.41
3.9
3.43
3.56
3.5
3.41
3.41
3.45
3.51
3.9
3.41
0.178
J
2.71
2.43
2.85
2.93
2.85
2.8
2.8
2.75
2.77
2.93
2.43
0.163
FL
9.96
9.94
9.61
10.22
10.12
10.33
9.96
9.96
10.01
10.33
9.61
0.217
MUW
0.74
0.81
0.74
0.74
0.74
0.83
0.74
0.74
0.76
0.83
0.74
0.037
MTW
1.34
1.46
1.33
1.32
1.32
1.44
1.34
1.34
1.36
1.46
1.32
0.056
MHW
2.25
2.46
2.24
2.27
2.23
2.44
2.25
2.25
2.30
2.46
2.23
0.094
Llmax
9.4
9.61
9.2
9.75
9.6
9.7
9.4
9.4
9.51
9.7
9.2
0.187
LL
9.4
9.61
9.2
9.75
9.6
9.7
9.4
9.4
9.51
9.75
9.2
0.187
LP
3.02
2.79
3.14
3.2
3.08
2.86
3.02
3.02
3.02
3.2
2.79
0.136
HHW
1.53
1.4
1.6
1.6
1.55
1.48
1.53
1.53
1.53
1.6
1.4
0.065
HTW
0.85
0.74
0.87
0.9
0.81
0.79
0.85
0.85
0.83
0.9
0.74
0.050
HHB
0.09
1.01
0.09
0.09
0.09
0.09
0.09
0.09
0.21
1.01
0.09
0.325
HSAREA
14.49
13.6
14.74
15.84
14.92
14.23
14.49
14.49
14.60
15.84
13.6
0.636
SPA
43.31
43.45
43.94
45.49
44.5
43.36
44
44
44.01
45.49
43.31
0.723
STL
3.02
2.79
3.2
3.19
3.03
3.3
3.02
3.02
3.07
3.19
2.79
0.157
0.018
Updated 17 Feb '12
QUARTER TON RATING COMPARISIONS
Paramater
Espada
Tiger
Aguila
AC
Cote
Alice II
Per Elisa Cert
Per Elisa T1
Actual
Average
Max
Min
STD Dev
TCC
0.902
0.902
0.903
0.912
0.907
0.907
0.897
0.898
0.905
0.90
0.912
0.897
0.005
HF
8.6
8.9
8.9
9
9.1
8.8
8.7
8.7
8.8
8.83
9.1
8.6
0.169
RF
1.01
1.008
1.008
1.01
1.017
1.008
1.005
1.005
1.005
1.01
1.017
1.01
0.004
OH F
1.04
1.05
LH
7.73
7.75
7.7
7.7
7.75
7.7
7.63
7.63
7.62
7.75
7.63
0.047
LWP
5.73
5.66
5.7
5.73
5.6
5.88
5.64
5.64
5.56
7.69
5.68
6.2
5.6
0.087
1.04
1.04
0.006
B
2.8
2.7
2.69
2.8
2.78
2.7
2.61
2.61
2.61
2.70
2.8
2.61
0.077
W
1406
1524
1315
1398
1290
1407
1300
1300
1300
1360.00
1524
1300
81.363
IRC DISP
1885
2005
DLR
279
308
270
278
281
258
275
275
287
279.00
308
270
14.102
1875
1921.67
72.342
D
1.45
1.57
1.48
1.47
1.48
1.53
1.5
1.5
1.61
1.51
1.57
1.45
0.038
BO
0.48
0.48
0.45
0.51
0.47
0.37
0.44
0.44
0.48
0.46
0.51
0.37
0.042
X
0.1
0.07
0.07
0.09
0
0
0
0
0.06
0.04
0.043
h
0.04
0.03
0.03
0.04
0
0
0
0
0.02
0.02
SO
1.52
1.61
1.55
1.46
1.68
1.45
1.55
1.55
1.58
1.55
1.61
0.95
0.075
Y
0.22
0.32
0.34
0.23
0.38
0.33
0.36
0.36
0.28
0.31
0.38
0.23
0.060
P
E
J
9.75
9.97
9.74
10
9.89
9.99
9.75
9.75
9.74
10
9.74
0.120
3.41
3.9
3.43
3.56
3.5
3.41
3.41
3.45
3.9
3.41
0.178
2.71
2.43
2.85
2.93
2.85
2.8
2.8
2.75
9.84
3.51
2.77
2.93
2.43
0.163
FL
9.96
9.94
9.61
10.22
10.12
10.33
9.96
9.96
10.01
10.33
9.61
0.217
MUW
0.74
0.81
0.74
0.74
0.74
0.83
0.74
0.74
0.76
0.83
0.74
0.037
MTW
1.34
1.46
1.33
1.32
1.32
1.44
1.34
1.34
1.36
1.46
1.32
0.056
MHW
2.25
2.46
2.24
2.27
2.23
2.44
2.25
2.25
2.30
2.46
2.23
0.094
Llmax
9.4
9.61
9.2
9.75
9.6
9.7
9.4
9.4
9.51
9.7
9.2
0.187
0.018
LL
9.4
9.61
9.2
9.75
9.6
9.7
9.4
9.4
9.51
9.75
9.2
0.187
LP
3.02
2.79
3.14
3.2
3.08
2.86
3.02
3.02
3.02
3.2
2.79
0.136
HHW
1.53
1.4
1.6
1.6
1.55
1.48
1.53
1.53
1.53
1.6
1.4
0.065
HTW
0.85
0.74
0.87
0.9
0.81
0.79
0.85
0.85
0.83
0.9
0.74
0.050
HHB
0.09
1.01
0.09
0.09
0.09
0.09
0.09
0.09
0.21
1.01
0.09
0.325
HSAREA
14.49
13.6
14.74
15.84
14.92
14.23
14.49
14.49
14.60
15.84
13.6
0.636
SPA
43.31
43.45
43.94
45.49
44.5
43.36
44
44
44.01
45.49
43.31
0.723
STL
3.02
2.79
3.2
3.19
3.03
3.3
3.02
3.02
3.07
3.19
2.79
0.157
The “AVERAGE”
Quarter Tonner
“Box”
P = 9.8m
SPA = 44 Sq m
E = 3.51m
STL = 3.07m
J = 2.77m
E = 3.51m
J = 2.77m
D = 1.51m
W = 1360 Kgs
LH = 7.7 m
Piecing it all together
From the Top-Down
Using the “AVERAGE” Quarter Tonner
as a guide to setting up the boat:
Average Quarter Tonner
LOCATING THE RIG
Many thanks Mark!
Paramater
J
Espada
Tiger
Aguila
2.71 2.43 2.85
AC
Cote
2.93 2.85
Alice II
Per Elisa Cert
Per Elisa T1
Actual
2.8
2.8
2.75
Average
Max
2.77 2.93
Min
2.43 0.163
RIG CONSIDERATIONS
•Single or double spreaders?
•How many halyards?
•Halyard locks or not?
•Where to stick it into the
boat!
• Structural considerations for
new mast position.
•How big or small- The
average QTer approach
P
E
J
FL
9.75
3.41
2.71
9.96
9.97
3.9
2.43
9.94
9.74
3.43
2.85
9.61
10
9.89 9.99
3.56
3.5
2.93 2.85
10.22 10.12 10.33
9.75
3.41
2.8
9.96
9.75
3.41
2.8
9.96
9.74
3.45
2.75
9.84
3.51
2.77
10.01
SAIL PLAN
Starting Point Espada
(QTC Winner 2011)
• Probably
a little too big as Per Elisa:
• Is smaller in volume terms
than Espada.
• Has a more slippery hull form
• Design Ratios SA:D
•Av SA/D Upwind = 28-30. (32)
•AV SA/D Downwind = 50. (51)
• Easier to cut a
bit off than........
•Personal preference
Hate being underpowered!
Keel Considerations
Stability = power. Again look
at the weight distribution
slide, the overall weight of
the boat did not change, just
the distribution.
Sail area, the upwind
remained pretty much the
same, but the kit went from
32M² to 45M².......which is a
HUGE % sail area increase.
Weight Study
Before & After
Item
Original Proposed
Hull
Internal Balast
Keel
Rudder
Engine
430
160
430
12
150
430
0
710
12
15
Mast
Boom
32.5
10.4
32.5
10.4
Spini Pole
3.4
3.4
9.5
10
20
15
15
10
1307.8
9.5
10
20
15
15
20
1302.8
Standing Rigging
Running Rigging
Batteries
Stanchions etc
Deck Gear
Misc
Remarks
Additional structure
Implications
QUARTER TON CUP 2012
OVERALL RESULTS
RankSail No
Name
Helm
Hcap Race_1Race_2 Race_3 Race_4Race_5 Race_6
Race_
Race_8 Race_9 Nt Pts
7
1
FRA 7891 Bullit
Peter Morton
0.903
1
1
2
(11)
8
4
9
1
4
30
2
SWE 7744 Alice II
Rickard Melander
0.906
3
4
3
2
6
(31/BF
D)
12
2
2
34
3
GBR
8414R
Aguila
Sam Laidlaw
0.902
2
3
(10)
7
7
5
4
6
3
37
4
IRL 3087
Anchor
Challenge
Paul Gibbons
0.913
6
5
6
(21)
1
1
11
7
12.5
49.5
5
NZL 3311 Blackfun
Rob Gray
0.912
10
2
1
5
15
3
8
10
54
6
GBR 50R Espada
Louise Morton
0.903
4
14
7
10
5
8
5
1
54
7
IRL
999999
Tiger
George & Neil Kenefick
0.907
9
8
4
9
2
16
4
5
57
8
GRE 49
Atalanti IV
George Andreadis
0.912
13
9
(15)
3
9
2.5
5
3
12.5
57
9
IRL 12296 Per Elisa
Ian Travers & Eamon Rohan 0.905
5
12
13
1
14
6
1
10
(19)
62
10
ESP 3090 Cote
Darren Marston & Olly
Ophaus
0.906
7
6
8
(23)
3
10
7
12
11
64
11
IRL 1392 Illes Pitiuses
Jason & Dominic Losty
0.903
16
10
5
(24.5)
21
2.5
13.5
13
7
88
(31/BF
D)
(31/BF
D)
(31/BF
D)
Now
The Fun Bit!
Transformation
Note: Halyards run below decks.
Note: Quick adjustment forestay. We adjust
12 turns from fully on to fully off,
depending on wind. No spanners reqd.
Note: Athwartships jib tracks. Reason being
the LP on non-overlapping jibs does not
vary so much so there is very little
adjustment required fore/aft.
The in/out adjustment allows for better sail
shape control when the sheet is cracked.
(No need for an outboard lead to control
the leech twist) .
Conclusions
• Whatever the scale and scope of a rebuild project they
are fun.
•Sail as is or DIY, professional refit or a bit of both.
•While daunting both these projects were very satisfying
in terms of;
• A great sense of achievement
• Develops ones boat building skills
• Improves ones boat prep’ing skills
• Understand IRC better
• Generally meet great people.
• Very Competitive Class.
•Excellent Class camaraderie.
•Crew of 5
•Trailer-sailor
•Budget to suit all pockets.
•A FUN easy & pretty boat to sail, crew, trail, store, and maintain!
Kinsale,Co Cork
Wednesday 26th- Saturday 29th June 2013
8-Races over 4-days in
spectacular surroundings.
The perfect combination of competitive IRC Racing and a superb family holiday.
For Mor
e information. Tel: +353 (0)21 4773433 . email [email protected]
www.sovereignscup.com
Sailing Photo Credits- Bob Bateman

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