Search found 70 matches

by David L Alston
01 Aug 2016, 14:32
Forum: Class Rules
Topic: Pultruded Carbon Spars
Replies: 10
Views: 6868

Re: Pultruded Carbon Spars

Olivier The point of this discussion was not if a GBP 20 Carbon Mast was better than a GBP 30 Aluminium mast or if the quality of Product A is superior to Produce B. At the moment the builder has NO choice at all, or indeed very little, and this is not a health state to be in. We have only the Class...
by David L Alston
20 Jul 2016, 18:25
Forum: Class Rules
Topic: Pultruded Carbon Spars
Replies: 10
Views: 6868

Re: Pultruded Carbon Spars

I will confess not to have even looked at this forums for a while and it seems that no one else has either. To respond to Stevew23 a RSA NCA officer Steve I have spent the past 6 months working in RSA and lived there for some 20 year before returning to the UK. So I do know your part of the world I ...
by David L Alston
24 Feb 2016, 18:48
Forum: Marketplace
Topic: Starters
Replies: 0
Views: 2618

Starters

Gentlemen,
Where can I buy a race starter. A simple one 1 min and 2 min countdown

Thanks
Dave
by David L Alston
12 Dec 2015, 16:18
Forum: Class Associations and Class Management
Topic: 2015 AGM - Topic: Ratify Emergency Class Rule
Replies: 23
Views: 11415

Re: 2015 AGM - Topic: Ratify Emergency Class Rule

On to the Kicking Strap End of the fitting There is only one rotation axis, it is about the Mast. There is NO up and down rotation. This is because it is eliminated by the strap itself. The rule relate to the fitting not to the components comprising the fitting. This is an important point since what...
by David L Alston
12 Dec 2015, 15:31
Forum: Class Associations and Class Management
Topic: 2015 AGM - Topic: Ratify Emergency Class Rule
Replies: 23
Views: 11415

Re: 2015 AGM - Topic: Ratify Emergency Class Rule

First focussing upon the Boom Pivot Point When these two points have become separated as they do in a fitting equipped with a ball bearing the two points are still required to be ADJACENT as they are. Adjacent does not however refer to a plane and in the sketch the two point are vertically adjacent ...
by David L Alston
12 Dec 2015, 14:50
Forum: Class Associations and Class Management
Topic: 2015 AGM - Topic: Ratify Emergency Class Rule
Replies: 23
Views: 11415

Re: 2015 AGM - Topic: Ratify Emergency Class Rule

The fundamental of any Rule, Law or Contract is what it states:- CR F.3.3(c)(2) The mainsail boom spar and the kicking strap pivot points shall be aft of the mast spar in the regions adjacent to these points. Take the first part and forgive me if my approach is too simple. The Boom Spar pivot point ...
by David L Alston
12 Dec 2015, 13:54
Forum: Class Associations and Class Management
Topic: 2015 AGM - Topic: Ratify Emergency Class Rule
Replies: 23
Views: 11415

Re: 2015 AGM - Topic: Ratify Emergency Class Rule

Dick I shall respond separately to your comment in another post to aid clarity Bruce I believe that you are missing the point of what I am trying to achieve or debate here. To put in in simple terms I believe that the Calcification / determination that the gooseneck fitting is seriously flawed and t...
by David L Alston
11 Dec 2015, 11:25
Forum: Class Associations and Class Management
Topic: 2015 AGM - Topic: Ratify Emergency Class Rule
Replies: 23
Views: 11415

Re: 2015 AGM - Topic: Ratify Emergency Class Rule

That is the spirit Dick You opinion is as precious as any man’s opinion. The key here is to provide your own opinion not the opinion of others. Let us take your points and debate them and see where it takes us :- ( I have deleted a word here and there for clarity ) One thing the plate GN does is to ...
by David L Alston
10 Dec 2015, 14:01
Forum: Class Associations and Class Management
Topic: 2015 AGM - Topic: Ratify Emergency Class Rule
Replies: 23
Views: 11415

Re: 2015 AGM - Topic: Ratify Emergency Class Rule

I have followed this debate for the outset and still I do not understand how small group of Experts read the Class Rules and concluded that this type of gooseneck fitting was non-compliant. That it is a simple fix on existing goosenecks is neither her or there. That the wording of the Emergency rule...
by David L Alston
12 Sep 2015, 10:35
Forum: Class Rules
Topic: Pultruded Carbon Spars
Replies: 10
Views: 6868

Re: Pultruded Carbon Spars

I will confess to be disappointed at the lack of comment particulalry from the souther hemiphere RSA in particular. No parcels containing biological waste have been thrust through my letter box and no E-mails. So what is one to conclude:- a) It is summer and nobody actually cares and is griped with ...
by David L Alston
17 Aug 2015, 08:49
Forum: Class Rules
Topic: Pultruded Carbon Spars
Replies: 10
Views: 6868

Pultruded Carbon Spars

I have most recently put a new boat on the water and therefore needed to build some new rigs. I was a little dismayed to find that all if not most of mast tubing available seemed to come from the same manufacturer. I did consider making a laminated wooden mast but the dimensional specification one w...
by David L Alston
10 Aug 2015, 18:22
Forum: Class Rules
Topic: Flotation
Replies: 11
Views: 4846

Re: Flotation

Steve Woolfenden I see your pain and I truly believe that the builder should make the decision as to the acceptability of a particular design and class compliance in place of trying to transfer this responsibility to a NCA or perhaps you. So what is your friend actually contemplating. And is he such...
by David L Alston
10 Aug 2015, 18:04
Forum: Class Rules
Topic: Flotation
Replies: 11
Views: 4846

Re: Flotation

John, I hear you, but you must concede that a bag manufactured from a permitted material located within the hull becomes the part of the INTERNAL STRUCTURE of the hull as defined by the ERS. The same would extend to a bulkhead formed with a polythene sheet, a radio compartment formed by a honey jar ...
by David L Alston
10 Aug 2015, 18:03
Forum: Class Rules
Topic: Flotation
Replies: 11
Views: 4846

Re: Flotation

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by David L Alston
09 Aug 2015, 19:45
Forum: Class Rules
Topic: Flotation
Replies: 11
Views: 4846

Re: Flotation

Ok so ERS defines a hul as ... D.1.1 Hull The shell including any transom, the deck including any superstructure, the internal structure including any cockpit, the fittings associated with these parts and any corrector weights. So the radio pot or container in terms of this definition is not part of...
by David L Alston
09 Aug 2015, 10:07
Forum: Class Rules
Topic: Flotation
Replies: 11
Views: 4846

Re: Flotation

I am most intrigued by this question and even more so by the answers …for more than one reason. But let us work through this for my benefit:- The class rules envision a totally closed hull not an open boat design. But there is nothing actually stating this in the Class Rules. Most crucially flotatio...
by David L Alston
30 May 2015, 19:50
Forum: General IOM
Topic: MX14 Setup Information
Replies: 12
Views: 11069

Re: MX14 Setup Information

Frank, Sorry for the belated response. Thank you for that 2018 hits Yes you might have thought so, the Creed Fin being very strong but you have to cut so much away at the top of the fin to make it fit ..and cut it in altogether the wrong place that the problem is not resolved ... It bends and twists...
by David L Alston
28 May 2015, 01:44
Forum: General IOM
Topic: MX14 Setup Information
Replies: 12
Views: 11069

Re: MX14 Setup Information

Frank , I have all but given up. I too had come to the conclusion that the fin is too soft and twists --- healed the boat over and simply watched it. I did cut a Creed fin down but I had to take such a lot away, fore and aft, that it flexed just as badly. I do wish that the fin simply stepped into a...
by David L Alston
07 May 2015, 07:57
Forum: Events and Event Management
Topic: Simple Heat Racing System
Replies: 51
Views: 21476

Re: Simple Heat Racing System

I am surprised that this post has not drawing more response. I was half expecting comments like ' Nuts' Rescheduling The HMS system has taken a simple and rather good concept just a bridge too far, I refer to the reschedule after 2..3 races. The simple round of seeding races followed by 4 or 6 boat ...
by David L Alston
15 Apr 2015, 07:45
Forum: General IOM
Topic: MX14 Setup Information
Replies: 12
Views: 11069

Re: MX14 Setup Information

Tai You will note that the same information is missing 1/ Hound position 2/ Spreader position 3/ Spreader length The information contained in the sketch will only give you the mast rake and mast step height. i.e. the suggested jib band to deck height. In this instance the dimension are present to se...
by David L Alston
15 Apr 2015, 07:23
Forum: General IOM
Topic: MX16 Setup Information
Replies: 6
Views: 5828

Re: MX16 Setup Information

Abin, Thank you for that clarification. I note your comment that the full rig / set up details are available to MX Components / Tai Safepack Customers . I am such a Customer and most certainly no information was provided to me with the boat or indeed was any forthcoming when I requested it from your...
by David L Alston
14 Apr 2015, 07:48
Forum: General IOM
Topic: MX16 Setup Information
Replies: 6
Views: 5828

Re: MX16 Setup Information

Thai, The sketch seems to have a few dimensions missing, specifically the recommended :- 1/ Hound positions 2/ Spreader positions 3/ Spreader length It might also be useful if you were to provide the :- a/ Main boom sheet attachment position relative to the either the mast of gooseneck b/ The Foresa...
by David L Alston
06 Apr 2015, 09:00
Forum: General IOM
Topic: Smooth finish
Replies: 4
Views: 3383

Re: Smooth finish

The problem with balsa boats, as a long term boat , is that you have to waterproof the inside as well as the outside. This is where you can end up plonking a tone of weight into the boat if you are not careful. Every gram counts here so look at each former/bulkhead individually and decide if it is r...
by David L Alston
03 Apr 2015, 22:30
Forum: General IOM
Topic: Smooth finish
Replies: 4
Views: 3383

Re: Smooth finish

I found that adding two or three 20- 25g cloths gets a smooth finish without adding a lot of weight. But as many will tell you the choice of resin is a key to low mass and high finish but most importantly an easy life. Z Epoxy Finishing resin with 20 -25g cloth is a really good combination - easily ...
by David L Alston
27 Mar 2015, 09:54
Forum: General IOM
Topic: Dubious racing tactics?
Replies: 4
Views: 4625

Re: Dubious racing tactics?

Recognising the unworkability of some of the Racing Rules of Sailing, a number of clubs agree internally to change some of them. One such local amendment that immediately comes to mind is the one about if there is any doubt OR DISPUTE that an overlap has been established – then assume there IS ONE ....
by David L Alston
18 Mar 2015, 01:04
Forum: Class Rules
Topic: What "..shall pass through a 20mm, ring gauge." BOOM F.4.5
Replies: 30
Views: 16344

Re: What "..shall pass through a 20mm, ring gauge." BOOM F.

Sorry like it or not Have a look at the force diagram attached ...It is late so I may have made a mistake hear and there. But The actual kick strap pull down and an angle. These forces resolve into two components:- Vertical ( Down) Fa(y) and Horizontal ( towards the mast ) Fa(x) This X component pla...
by David L Alston
14 Mar 2015, 11:54
Forum: Class Rules
Topic: What "..shall pass through a 20mm, ring gauge." BOOM F.4.5
Replies: 30
Views: 16344

Re: What "..shall pass through a 20mm, ring gauge." BOOM F.

Following on from above. Reference the messengers:- Perhaps you did not read the justification in ruling against your design. Fundamentally it seems that they deem the plate/ fitting as adding strength / reinforcing the boom. It matters not if this offers any or no advantage , simply put - structura...
by David L Alston
14 Mar 2015, 02:30
Forum: Class Rules
Topic: What "..shall pass through a 20mm, ring gauge." BOOM F.4.5
Replies: 30
Views: 16344

Re: What "..shall pass through a 20mm, ring gauge." BOOM F.

I see you are still having fun with this. Perhaps you are not aware that these Class Rule interpretations are not coming from IOMIC or IOMUK or what ever it is. They originate from the IRSA Technical committee, the Radio Sailing arm of ISAF. So do shoot the messengers ! - they were only working for ...
by David L Alston
20 Jan 2015, 08:08
Forum: General IOM
Topic: MX14 Setup Information
Replies: 12
Views: 11069

Re: MX14 Setup Information

Mizi, Thank you for the information, it was most invaluable. I shall store it in my database for prosperity, the round one adjacent to my desk . I take it you will be sailing in the world championship this year. However since my original posting, MX Components came to my aid and kindly sent me the a...
by David L Alston
23 Dec 2014, 11:35
Forum: General IOM
Topic: MX14 Setup Information
Replies: 12
Views: 11069

Re: MX14 Setup Information

I still remain hopeful of some response to this post / topic since there are so many of these boat out there. I sincerely believe it would be useful to share some ideas.


This is why I have dug this out again.