New Posts New Posts RSS Feed: V Twin
  FAQ FAQ  Forum Search   Register Register  Login Login

V Twin

 Post Reply Post Reply Page  <1 7891011 142>
Author
johnreekie1980 View Drop Down
Groupie
Groupie


Joined: 11 Jun 07
Online Status: Offline
Posts: 91
Post Options Post Options   Quote johnreekie1980 Quote  Post ReplyReply Direct Link To This Post Topic: V Twin
    Posted: 21 Jun 12 at 9:14am
GRF claims that the electricity is free which interested me greatly as an engineer as I am not aware of any truly free source of electricity available on the planet. Further reading on this matter indicates that the Bonneville Hydro Electric Plant is run by a not for profit organisation called the BPA. The BPA markets the electricity to the market at a price which allows it to break even. So unless all the operators, maintainers and materials providers are working for free then it is highly unlikely the electricity is free. Wikipedia and common sense could be wrong however I doubt it very much. We are also forgetting that the dam was built by the army and therefore the governments expense which would also not be free. Nothing in life is free and GRF would do well to remember this.
 
Credibility is lost when posting wrong facts on the internet.
 
Originally posted by G.R.F.

Abuse given to Australians is legal - fact.
At no time is an Englishman expected to back any comment he may have made to an Australian, the Australian should simply accept the wiser and superior words of the Englishman and be humble, in fact be happy he is even being acknowledged as anything other than a convicted felon or a bush dwelling aborigine.

This is the Law.

So now to the facts.

The factory I recently visited sits adjacent to the Bonneville Hydro electric plant on the Columbia river the electricity is free.

The resin I told you of's formula is secret it is being kept in the US to protect their intellectual property from thieving Chinese (and Australians).

The wood used in blank construction as well as Bamboo is from managed forests from within a 50 mile radius.

The Sports that like light stuff as well as Windsurfing, which no longer has the sun filled uplands of a better tomorrow in which to bask in the fires of progressive innovation, are SUP ( a hollow race board), kite twintip and surf boards and wake boards capable of being both light yet capable of sustaining punishment in cable parks. I've no doubt that somewhere along the Gorge folk are using similar stuff to build sailboats and all manner of stuff, but those are the instances that have prompted my latests rants.

You may now go to your room and reconsider your position.
Back to Top
haroosh View Drop Down
Really should get out more
Really should get out more
Avatar

Joined: 14 Jan 09
Location: United Kingdom
Online Status: Offline
Posts: 521
Post Options Post Options   Quote haroosh Quote  Post ReplyReply Direct Link To This Post Posted: 20 Jun 12 at 9:17pm
I thought Andy only worked on fast boats!!!
Keith
RS100 GBR 116 (XLR8)
Back to Top
G.R.F. View Drop Down
Really should get out more
Really should get out more


Joined: 10 Aug 08
Location: United Kingdom
Online Status: Offline
Posts: 4028
Post Options Post Options   Quote G.R.F. Quote  Post ReplyReply Direct Link To This Post Posted: 20 Jun 12 at 6:47pm
Well it may have been a long passage of time, but I've not really been here much, I've been a travelling fool this last few weeks, what with meetings in the States, France and Germany, a different country each week for the last three weeks.
She's laying in my drive looking a tad forlorn and I have to make a decision do it try or should i get her down to someone proper like Andy @ Bloodaxe for example. I've kind of formed a plan as to what's needed, but I want to do t and lose some hull weight, that will involve carbon and expense...


Edited by G.R.F. - 20 Jun 12 at 6:47pm
Back to Top
fab100 View Drop Down
Really should get out more
Really should get out more
Avatar

Joined: 15 Mar 11
Online Status: Offline
Posts: 1005
Post Options Post Options   Quote fab100 Quote  Post ReplyReply Direct Link To This Post Posted: 20 Jun 12 at 4:51pm
Come on GRF, you've had more than enough time to stick some flowery-pattered fablon over the V-twin ding and get back on the water.

So what's happening; I hope you've not consigned the poor old girl to the nettles already
Back to Top
blaze720 View Drop Down
Really should get out more
Really should get out more
Avatar

Joined: 28 Sep 05
Location: United Kingdom
Online Status: Offline
Posts: 1635
Post Options Post Options   Quote blaze720 Quote  Post ReplyReply Direct Link To This Post Posted: 08 Jun 12 at 9:55am
oh, don't you end up with the Icon?

.... not what we set out to do but the general logic is exactly right and how the idea developed. 

In terms of the concept you can get into a virtuous circle where you simply do not need a very powerful rig to drive a heavier and increasingly complex overall package.   Keep it light, keep it simple and go for very high efficiency in terms of rig and hull  - it also means that you can offer a relatively advanced all carbon rig at a very attractive overall cost ... but Icon was/is primarily aimed at the 2 sail niche which had not been pursued much for 35 years ... since that other NS derivative pointed the way in the 70's - and that boat was the Tasar.

Mike L. (Cirrus Raceboats)
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: 08 Jun 12 at 9:32am
The lighter hull could then have less sail area to drive it, and if the hullform was more easily driven, you could loose the bowsprit and kite and save both the weight of it and structural weight - oh, don't you end up with the Icon?
Firefly 2324, Puffin 229, Minisail 3446 Mirror 70686
Back to Top
RS400atC View Drop Down
Really should get out more
Really should get out more


Joined: 04 Dec 08
Online Status: Offline
Posts: 3011
Post Options Post Options   Quote RS400atC Quote  Post ReplyReply Direct Link To This Post Posted: 07 Jun 12 at 7:47pm
I was thinking about what a similar size boat could be built down to, not looking to build a light 400.
You could lose most of the double floor.
Taking 12 sqm and adding decks etc say 20sqm times 1.5kg/sqm
30kg for a shell.
Looks like 40kg bare hull ought to be possible.
There are some kg to be lost from the ali rig.
Would it be strong enough?
Would it be going faster and hitting the water harder?
How different would it feel to sail?

Back to Top
aardvark_issues View Drop Down
Really should get out more
Really should get out more
Avatar

Joined: 24 Jul 05
Location: Weston-Super-Mare
Online Status: Offline
Posts: 505
Post Options Post Options   Quote aardvark_issues Quote  Post ReplyReply Direct Link To This Post Posted: 07 Jun 12 at 7:25pm
Originally posted by RS400atC



Taking an RS400 size boat as being around 2m by 4.5m, You might guess at 10sqm in the hull skin, say another 5 in foredeck and side decks, allow another 5kg for a rig bulkhead and board case, it looks like radical weight saving could be possible?
Even allowing for local reinforcement.


A 400 is probably more like 11 or 12 M for the hull - if you look at the mouldings for the cockpit the insides will be more again! Don't forget to add a few hundred g per M2 for the gelcoat though. If you painted a 400 you could drop loads of weight out of it, but add a couple of £k to the finished price...
Back to Top
DaveT View Drop Down
Groupie
Groupie


Joined: 31 May 05
Location: United Kingdom
Online Status: Offline
Posts: 76
Post Options Post Options   Quote DaveT Quote  Post ReplyReply Direct Link To This Post Posted: 07 Jun 12 at 5:57pm
I'd such high hope such as esteemed handbag retailer could revolution dinghy design, bad times 
Back to Top
RS400atC View Drop Down
Really should get out more
Really should get out more


Joined: 04 Dec 08
Online Status: Offline
Posts: 3011
Post Options Post Options   Quote RS400atC Quote  Post ReplyReply Direct Link To This Post Posted: 07 Jun 12 at 5:28pm
Originally posted by Steve Clark

..... surface area is the biggest driver in weight. With modern materials, you quite quickly get to the limit of what can be regarded as watertight and strong enough. This is something in the order of 200 g/m^2 carbon cloth on either side of 55 kg/m^3 foam. Depending on the thickness of the foam, you can predict that the best you is about 1 kg/m^2 of surface area. .....
SHC


Taking an RS400 size boat as being around 2m by 4.5m, You might guess at 10sqm in the hull skin, say another 5 in foredeck and side decks, allow another 5kg for a rig bulkhead and board case, it looks like radical weight saving could be possible?
Even allowing for local reinforcement.
Back to Top
 Post Reply Post Reply Page  <1 7891011 142>

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