[quote=dcwhite]Here are some quick answers.
1. I would recommend alodine or bonderite M-CR 1201. This is an aluminum conversion coating using a chemical to convert the aluminum to corrosion-resistant. It is almost as good as anodize and a standard pre-requisite to painting raw aluminum for aircraft parts if they are not anodized. About $35 per quart from Aircraft Spruce or Amazon.
2. I will give you the dimension for mine by next weekend. I positioned the hoop to accommodate a bag 110" long and to rig similar to current F18s. The back of the bag is now about a foot behind the front beam. The snuffer grommet is next to the mast rotator grommet on the trampoline. Different grommets had to be added to my old spinnakers so they would fold smaller to fit in the shorter bag. The bag went from 12' long (the length of the entire pole) to just over 9'. Are you planning to have your old bag run under the entire trampoline? I have no experience with this.
3. You can order a part. A dealer can help you with this. New England Catamarans and Murrays are always helpful.
4. I cut the loop off the bridle and sailed all summer with a dyneema loop holding the pole up towards the bridle. The loop was attached to the forestay chainplate. The pole bridle tension on the end of the spinnaker pole will maintain the pole pre-bend. I am incorporating a compression rod off the bridle to replace the loop (same as the carbon 20). I will send you photos if you want?
5. I have a 2000 boat. At the time, spinnakers were launched off bags on the tramp. The tack line was connected to the halyard. When the halyard was pulled, the spinnaker tack automatically went to the end of the pole. You can see an example in the new Nacra Evolution assembly manual on the Nacra site. With your end pole snuffer, this became a moot point. I have a separate tack line based on microwindracing.com
You will find detailed drawings at the above site. The bungee that tensions the snuffer line also keeps my tack line tight. When the tack is tight (chute up) the slack loosens the snuffer end of the halyard. I can provide photos and I20 dimensions at a later date, as I dis-assembled the system and boxed everything for the winter.
Hope this helps?[/quote]
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