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Phil Alderson
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« Reply #135 on: April 29, 2010, 01:07:15 pm » |
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Is this something that a dismantled block could solve?
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2659 The Flying Kipper 97 Rules
2682 Pocket Rocket
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Banshee Ambulance
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« Reply #136 on: April 29, 2010, 01:46:47 pm » |
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Thats an expensive way to buy ball bearings!
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MK
Association Member
Apprentice Guru
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Posts: 222
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« Reply #137 on: April 29, 2010, 02:25:28 pm » |
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We have already solved the problem, with ronstan sheaves i found and p and b happily ordered in
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john_hamilton
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Guru's Assistant
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Posts: 405
cherubing is a word
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« Reply #139 on: April 30, 2010, 10:09:53 am » |
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iv found those "on-drives" get stuck in a postion at really inappropriate times, especially when there is a large angle between the extension and 90degrees from the tiller, like when sitting very forward in light winds (not to bad) or standing at the back of the bus with the spinny up in ridiculous winds (worse), i have only sailed with theese kind of things on an 18 so im not sure this would happen to cherubs
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The pessimist complains about the wind; the optimist hopes it will change; the realist adjusts the sail
cherub 2645 - cheese before bedtime
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Banshee Ambulance
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« Reply #140 on: April 30, 2010, 11:45:29 am » |
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i have only sailed with theese kind of things on an 18 so im not sure this would happen to cherubs
You have been helming an 18 John? I'm impressed. What about modifying a jib furler to sit on the end of the tiller as as the drum? The 14s use something similar but I have so far been unable to find one. |
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« Last Edit: April 30, 2010, 11:53:15 am by Gordon Tracy »
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Will_Lee
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« Reply #141 on: April 30, 2010, 12:15:42 pm » |
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Sorry in wrong place. E5 mould with Andy p in prep for joins build!
ON ferry on way back. Weather good but so many smokers!
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john_hamilton
Association Member
Guru's Assistant
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Posts: 405
cherubing is a word
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« Reply #142 on: April 30, 2010, 01:28:23 pm » |
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Rob, would one of those furling drums they use on SMODs work (Xenon, Vago, Vision,etc) or is it too big? i may hae a few lying around somewhere, and yes i have helmed an 18 a few time, you should try it, its incredible fun (apart from when tiller loads up and UJ is stuck at the same angle, flinging you into the other crew)
will, did you take it down this weekend, we are very gratefull!!!
also, does anyone know where i should post the roylaty to? (kevins address)
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The pessimist complains about the wind; the optimist hopes it will change; the realist adjusts the sail
cherub 2645 - cheese before bedtime
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Phil Alderson
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« Reply #143 on: April 30, 2010, 02:55:31 pm » |
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Some time ago I think that I was quoted about £40 for an int 14 style drum, complete with flexible joints. I think that it was from Ovingtons but I am not sure.
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2659 The Flying Kipper 97 Rules
2682 Pocket Rocket
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Banshee Ambulance
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« Reply #144 on: May 09, 2010, 04:28:14 pm » |
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Would it be technically feasable to build a rotating gantry t foil set up that was controlled by a tension cable? The tension cable would then be adjusted via a srew thread within the tiller, which would then in turn be driven by a worm drive with the two tiller extensions running through it. This has the advantage of MASSIVE purchase, no expensive blocks, potentially quite light and simplicity. The Moths have proved that cable systems can be used in a marine environment, the question is would it handle the load?
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Will_Lee
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« Reply #145 on: May 09, 2010, 05:14:14 pm » |
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This is v like the daemon system, where a worm gear pulls on the top of the rudderpin to deploy the t foil. The worm gear seems like a good idea but poor efficiency and no feedback (as well as engineering problems of having a slot int he tiller) put me right off the idea.
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daryl_wilkinson
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« Reply #146 on: May 10, 2010, 04:17:28 pm » |
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Personally I think this is the most elegant solution....
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Will_Lee
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« Reply #147 on: May 10, 2010, 11:22:59 pm » |
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I saw that at the show. The huge lump of metal could be quite a handy murder weapon, so I suppose it has some merit.
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Tim Noyce
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« Reply #148 on: May 11, 2010, 09:03:49 am » |
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I guess this is a feasible solution when you build a 12 foot boat out of carbon which has a minimum weight about 30kg heavier than a Cherub?! Just googled and the minimum all up hull weight is 78kg, so even with that scaffolding I am pretty sure they will need a fair bit of lead.
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Comfortably Numb - 2648
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daryl_wilkinson
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« Reply #149 on: May 11, 2010, 11:56:35 am » |
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Err.... I'm not suggesting the material use! Just the design of the system. A while back I talked about a 'might screw' moving the bottom pintle like the one you see in Joe Richards design here.
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