New Posts New Posts RSS Feed: Cirrus Icon Development
  FAQ FAQ  Forum Search   Register Register  Login Login

Cirrus Icon Development
 Post Reply Post Reply Page  <1 3334353637 152>
Author
  Share Topic Share Topic  Topic Search Topic Search  Topic Options Topic Options
JimC View Drop Down
Really should get out more
Really should get out more
Avatar

Joined: 17 May 04
Location: United Kingdom
Online Status: Offline
Posts: 6662 		Post Options Post Options   Quote JimC Quote  Post ReplyReply Direct Link To This Post Topic: Cirrus Icon Development
    Posted: 20 Jul 10 at 11:00am
Originally posted by Rupert

Has anyone built an L shaped boom

That's effectively the Temple vang that was talked about earlier I think...
Back to Top
tgruitt View Drop Down
Really should get out more
Really should get out more
Avatar

Joined: 02 Dec 04
Online Status: Offline
Posts: 2479 		Post Options Post Options   Quote tgruitt Quote  Post ReplyReply Direct Link To This Post Posted: 20 Jul 10 at 11:04am
Originally posted by Rupert

Has anyone built an L shaped boom, with the gooseneck at the corner of the L, and the angle such that the short bit of the L comes out from the mast enough to allow travel? You pull the lever end towards the mast, the rest of the boom goes down.


Like this?
Needs to sail more...
Back to Top
JimC View Drop Down
Really should get out more
Really should get out more
Avatar

Joined: 17 May 04
Location: United Kingdom
Online Status: Offline
Posts: 6662 		Post Options Post Options   Quote JimC Quote  Post ReplyReply Direct Link To This Post Posted: 20 Jul 10 at 11:10am
Originally posted by Lukepiewalker

Have you considered putting on a mongo overlapping Genoa?

Of all dinghy sail configurations this is arguably the one that provides the greatest possible heeling moment and the greatest handling problems combined with the least forward drive per square foot...
Back to Top
Lukepiewalker View Drop Down
Really should get out more
Really should get out more
Avatar

Joined: 24 May 06
Location: United Kingdom
Online Status: Offline
Posts: 1341 		Post Options Post Options   Quote Lukepiewalker Quote  Post ReplyReply Direct Link To This Post Posted: 20 Jul 10 at 1:04pm
Aye.... but.... it's my solution to just about everything....
Ex-Finn GBR533 "Pie Hard"
Ex-National 12 3253 "Seawitch"
Ex-National 12 2961 "Curved Air"
Ex-Mirror 59096 "Voodoo Chile"
Back to Top
Rupert View Drop Down
Really should get out more
Really should get out more


Joined: 11 Aug 04
Location: Whitefriars sc
Online Status: Offline
Posts: 8956 		Post Options Post Options   Quote Rupert Quote  Post ReplyReply Direct Link To This Post Posted: 20 Jul 10 at 4:49pm

Originally posted by tgruitt

Originally posted by Rupert

Has anyone built an L shaped boom, with the gooseneck at the corner of the L, and the angle such that the short bit of the L comes out from the mast enough to allow travel? You pull the lever end towards the mast, the rest of the boom goes down.


Like this?


Kind of like that - same end effect, but I was picturing the whole thing built as one monocoque structure, rather than the vang added on. 
Firefly 2324, Puffin 229, Minisail 3446 Mirror 70686
Back to Top
ham4sand View Drop Down
Far too distracted from work
Far too distracted from work
Avatar

Joined: 27 Jul 09
Location: United Kingdom
Online Status: Offline
Posts: 452 		Post Options Post Options   Quote ham4sand Quote  Post ReplyReply Direct Link To This Post Posted: 20 Jul 10 at 7:12pm
yes there is a cherub boom like that i think, it was at
last years dinghy show
John Hamilton
cherub 2645 - cheese before bedtime
cherub 3209 - anatidaephobia
laser 176847 - kiss this
Back to Top
Jeremyc View Drop Down
Posting king
Posting king


Joined: 27 Jul 09
Online Status: Offline
Posts: 110 		Post Options Post Options   Quote Jeremyc Quote  Post ReplyReply Direct Link To This Post Posted: 21 Jul 10 at 10:29am
That boom is from 'Jack Sparrows' Banshee design Cherub.
Seen it out a couple of times at the club.
Built by Aardvark Technologies I believe


Edited by Jeremyc
N12- pure joy
D-Zero more pure joy
Back to Top
Guests View Drop Down
Guest Group
Guest Group
Post Options Post Options   Quote Guests Quote  Post ReplyReply Direct Link To This Post Posted: 22 Jul 10 at 11:17am

A boom/kicker arrangment like puts a load through the gooseneck to resist the forward end of the boom being rotated upwards.  If you have a boomerang that pivots near the gooseneck, you don't have this problem (but I'm not sure you save much space either).

Back to Top
Jon Meadowcroft View Drop Down
Groupie
Groupie


Joined: 26 Aug 08
Location: United Kingdom
Online Status: Offline
Posts: 64 		Post Options Post Options   Quote Jon Meadowcroft Quote  Post ReplyReply Direct Link To This Post Posted: 22 Jul 10 at 3:03pm

Just a suggestion, keep it simple, keep the price down, dont reinvent the wheel?  Ensure that it is accessible and not unnecessarily complicated.

To ensure a wide variation in crew weights allow open choice on fit out, spars and sails. 
Back to Top
ham4sand View Drop Down
Far too distracted from work
Far too distracted from work
Avatar

Joined: 27 Jul 09
Location: United Kingdom
Online Status: Offline
Posts: 452 		Post Options Post Options   Quote ham4sand Quote  Post ReplyReply Direct Link To This Post Posted: 22 Jul 10 at 3:12pm
the above drawing of an anchored boomerand is basically a
temple vang

i think "dan's boat" another cherub has the monocoque L
shape
John Hamilton
cherub 2645 - cheese before bedtime
cherub 3209 - anatidaephobia
laser 176847 - kiss this
Back to Top
 Post Reply Post Reply Page  <1 3334353637 152>

Forum Jump Forum Permissions View Drop Down

Bulletin Board Software by Web Wiz Forums® version 9.665y
Copyright ©2001-2010 Web Wiz
Change your personal settings, or read our privacy policy