Construction Materials Proposal AGM 2007

More
13 Aug 2007 19:18 #20042 by Trevor Lloyd
Please find attached a copy of my rule proposals for 2007.

This proposal has been seconded and will be put to the AGM. More than happy to take comments, anyone wishing to associate themselves with these proposals please let me know. It might seem like a lot of change but it's only the things we've (the open circuit racers) been discussing and someone has to play devils advocate!. This one will reduce the build time by Amateurs and Professionals alike and hence costs. Taping a boat adds little strength today and adds a level of build complexity no longer required if using epoxy based glues and fillers. A filleted joint is technically stronger than the timber it's attached to.

1.1 Construction Materials

Existing 1.1.2 Amateur and Professional Builders shall complete hulls using only materials supplied with the Mirror kits (except for adhesives which are optional) and shall not modify or replace any part of the kit except where specifically permitted by these Rules.

Proposed. 1.1.2 Amateur and Professional Builders shall complete hulls using epoxy resin adhesives. Kits manufacturers or builders from plans shall only use materials conforming to ISAF specifications. The only problem here is getting ISAF to produce a readily available specification

1.2 Construction

Existing 1.2.1 All the panels and wood parts supplied with the kit shall be incorporated into the hull with the exception of the forward shroud blocks, jib fairleads and forward mast step which are optional. All wood parts shall be used only for their intended purpose. Where these Rules provide that the material of a part is optional the supplied wood part may be replaced by an equivalent part of the alternative material.

Proposed 1.2.1 All panels shall be constructed using Weather Bonded Ply (WBP) materials. The cockpit layout should conform to the MK2 layout and dimensions, for all new boats constructed.

Existing 1.2.2 The shell of the wooden hulls shall be constructed using the `stitch and glue' method of construction and all hull joints so constructed shall be reinforced with at least one layer of the glass fibre tape supplied with the kit on both the inside and the outside of the joint. Joints between other kit panels, shall be reinforced with at least one layer of the glass fibre tape supplied with the kit.

Proposed 1.2.2 The shell of the wooden hulls may be constructed using the `stitch and glue' or frame methods of construction. Frame construction shall be completed using epoxy resin for all joints, glass fibre tape may be used to reinforce joints. Boats completed using stitch and glue may use epoxy fillets and / or glass fibre tape.

Please Log in to join the conversation.

  • Roger Clark
  • Visitor
  • Visitor
14 Aug 2007 08:49 #15429 by Roger Clark
Replied by Roger Clark on topic Construction Materials Proposal AGM 2007
As mentioned in previous posts I think the class will be held back if we do not accept change. I feel provided all boats have the same hull shape, weight a minimum weight, have centre plates and rudders of a standard pattern and have the same sail area then owners should be free to choose what or how to achieve it. It would encourage development and allow changes that owners have already made that are outside class rules. The Mirror is a well loved class and has started many sailors on the road to success in other classes. We need to remain concious of developments outside our class and evolve the construction and sail control to reflect this.

Roger
59725

Please Log in to join the conversation.

Time to create page: 0.299 seconds
Powered by Kunena Forum

Latest forum posts

More Topics »