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Spinnaker Pole Length #202860
02/11/10 10:50 AM
02/11/10 10:50 AM
Joined: Aug 2007
Posts: 70
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ButchG Offline OP
journeyman
ButchG  Offline OP
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Posts: 70
After doing some searching on the web I have found very little
data on Spi Pole Length. The Tornado class rules state for that
boat the length is 13.2ft.

If you know....how long for:
Tor: 4000mm per Class Rules
F18:
N20:
I20:

Last edited by ButchG; 02/11/10 12:03 PM.

"There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order."


ButchG
Prindle 19 w/Spi
-- Have You Seen This? --
Re: Spinnaker Pole Length [Re: ButchG] #202863
02/11/10 11:05 AM
02/11/10 11:05 AM
Joined: Mar 2002
Posts: 984
2017 F18 Americas Site
Dan_Delave Offline
old hand
Dan_Delave  Offline
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2017 F18 Americas Site
for the Formula 18 the pole can extend no further than 800 mm in front of the bow. There is a little more to how to get the number but that is the rule. What are you trying to accomplish this seems like a broad question?

Later,
Dan

Re: Spinnaker Pole Length [Re: Dan_Delave] #202873
02/11/10 12:03 PM
02/11/10 12:03 PM
Joined: Aug 2007
Posts: 70
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ButchG Offline OP
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ButchG  Offline OP
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I run a P19.I've discovered that I made my pole a little short.

At 11.5ft (3500mm) overall, 1.5ft (450mm) in front of the
bows, I cannot get full performance or control from the spi.

I was looking to see what pole lengths compatible boats are
running so I can emulate them.

The Tornado pole is 13.125ft (4000mm). This is what clued me
in to my....ahem....shortness.

So if the F18 pole can be no longer than 800mm from the bows,
what is the distance between the FWD cross beam and the bows
on an F18?


"There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order."


ButchG
Prindle 19 w/Spi
Re: Spinnaker Pole Length [Re: ButchG] #202877
02/11/10 12:18 PM
02/11/10 12:18 PM
Joined: Nov 2005
Posts: 1,203
uk
TEAMVMG Offline
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TEAMVMG  Offline
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WHICH F18??????? grin

Originally Posted by ButchG
I run a P19.I've discovered that I made my pole a little short.

At 11.5ft (3500mm) overall, 1.5ft (450mm) in front of the
bows, I cannot get full performance or control from the spi.

I was looking to see what pole lengths compatible boats are
running so I can emulate them.

The Tornado pole is 13.125ft (4000mm). This is what clued me
in to my....ahem....shortness.

So if the F18 pole can be no longer than 800mm from the bows,
what is the distance between the FWD cross beam and the bows
on an F18?


Paul

teamvmg.weebly.com
Re: Spinnaker Pole Length [Re: ButchG] #202878
02/11/10 12:20 PM
02/11/10 12:20 PM
Joined: Jun 2001
Posts: 3,293
Long Beach, California
John Williams Offline
Carpal Tunnel
John Williams  Offline
Carpal Tunnel

Joined: Jun 2001
Posts: 3,293
Long Beach, California
Originally Posted by ButchG

So if the F18 pole can be no longer than 800mm from the bows,
what is the distance between the FWD cross beam and the bows
on an F18?


Highly variable from manufacturer to manufacturer. The Capricorn pole is about 11-feet, 11-inches to meet the class rule. The C2 pole will be longer since the front beam is further aft - I'd guess 12-feet 3-inches, but don't know for sure.


John Williams

- The harder you practice, the luckier you get -
Gary Player, pro golfer

After watching Lionel Messi play, I realize I need to sail harder.
Re: Spinnaker Pole Length [Re: TEAMVMG] #202879
02/11/10 12:21 PM
02/11/10 12:21 PM

A
andrewscott
Unregistered
andrewscott
Unregistered
A



I had an old used pole on my mystere 5.5. the pole was 12'6"
I ran an f18 spin at first. It seemed fine (granted i had nothing to judge it against)

I moved up to a Tornado spin and 13.2 pole and it works perfectly for me

Re: Spinnaker Pole Length [Re: TEAMVMG] #202880
02/11/10 12:21 PM
02/11/10 12:21 PM
Joined: Aug 2007
Posts: 70
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ButchG Offline OP
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ButchG  Offline OP
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Now see?! Here and I thought the Formula18 had a set, specific
guide for hull/attachments no matter who made it.

Just learn how much more I don't know every day wink


"There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order."


ButchG
Prindle 19 w/Spi
Re: Spinnaker Pole Length [Re: ButchG] #202887
02/11/10 01:55 PM
02/11/10 01:55 PM
Joined: Jun 2001
Posts: 9,582
North-West Europe
Wouter Offline
Carpal Tunnel
Wouter  Offline
Carpal Tunnel

Joined: Jun 2001
Posts: 9,582
North-West Europe

Quote

I thought the Formula18 had a set, specific
guide for hull/attachments no matter who made it.



Nope, that would be the F16 class.

On these 16 footers (or really 5.00 mtr. = 16.4 feet) the poles must be 3500 or shorter; irrespectly of the where the mainbeam or bows are.

Wouter


Wouter Hijink
Formula 16 NED 243 (one-off; homebuild)
The Netherlands
Re: Spinnaker Pole Length [Re: ButchG] #202888
02/11/10 02:01 PM
02/11/10 02:01 PM
Joined: Aug 2007
Posts: 1,304
Gulf Coast relocated from Cali...
TeamChums Offline
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TeamChums  Offline
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Gulf Coast relocated from Cali...
It would help if we knew what chute you're running.


Lee

Keyboard sailors are always faster in all conditions.
Re: Spinnaker Pole Length [Re: TeamChums] #202889
02/11/10 02:06 PM
02/11/10 02:06 PM
Joined: Aug 2007
Posts: 70
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ButchG Offline OP
journeyman
ButchG  Offline OP
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Joined: Aug 2007
Posts: 70
Current chute is a cut down Smythe sail from the mid 90's.
It started out as 32m2... I have since had Randy cut it down
to approx. 26.5m2. I'm told its the same approximate shape
as the N20 chute.


"There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order."


ButchG
Prindle 19 w/Spi
Re: Spinnaker Pole Length [Re: ButchG] #202919
02/11/10 07:28 PM
02/11/10 07:28 PM
Joined: Mar 2002
Posts: 984
2017 F18 Americas Site
Dan_Delave Offline
old hand
Dan_Delave  Offline
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Posts: 984
2017 F18 Americas Site
The real issue you have is not the pole length but the distance from the tack to the clew. You also need to make sure you have enough to pull the leech tight enough. If you know how high the clew is off the deck when fully hoisted and you determined where you want the spin sheet line lead you could extrapolate the length of the pole.

Here is what you could do:
Hoist the chute in zero wind.
Give the clue to your buddy.
Determine where you would like to place the block for the sheet to the deck and hold your sheet line there.
Have the clew moved forward and back until the sheet line angle is 45 degrees (equal pulling back and down) to the sheeting point.
Measure distance from front crossbar to the tack point.
Keep in mind that the spinnaker pole should have a fair amount of prebend so you do not break it.

Will this work for you?
Dan DeLave

Re: Spinnaker Pole Length [Re: Dan_Delave] #202934
02/12/10 12:22 AM
02/12/10 12:22 AM
Joined: Jul 2001
Posts: 364
Andrew Offline
enthusiast
Andrew  Offline
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Joined: Jul 2001
Posts: 364
I had a 15'4" pole on my P19, with a mid-90s Nacra 6.O kite that was NOT cut down, leaving it at roughly 346 sq ft. It worked great if you wanted to sail deep, but forget reaching!


Andrew Tatton Nacra 20 "Wiggle Stick" #266 Nacra 18 Square #12
Re: Spinnaker Pole Length [Re: Andrew] #203045
02/12/10 09:39 AM
02/12/10 09:39 AM
Joined: Aug 2007
Posts: 70
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ButchG Offline OP
journeyman
ButchG  Offline OP
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Joined: Aug 2007
Posts: 70
Originally Posted by Dan_Delave
The real issue you have is not the pole length but the distance from the tack to the clew.....

Will this work for you?
Dan DeLave

This looks like a very good idea/procedure, thanks Dave, will try.

Originally Posted by Andrew
I had a 15'4" pole.........worked great if you wanted to sail deep, but forget reaching!


Thats exactly what I found even with the short pole. That huge arsed Spi just wouldn't reach.

ButchG
Climbing the Learning Curve


"There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order."


ButchG
Prindle 19 w/Spi

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