Laser boom inner sleeve

Discussion in 'Laser Talk' started by stuck in the 80s, Oct 19, 2011.

  1. stuck in the 80s

    stuck in the 80s Member

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    I have a broken top-section which I had kept with the intention of making a spare boom, I called the uk lp shop & asked if I could buy the inner boom sleeve kit, the reply was that they no longer make or stock that part, so my question is can someone tell me the correct length, tube outer/inner diameter, and wall thickness.
    I have seen these available in the USA http://www.westcoastsailing.net/default/90418.html & was startled that this is unavailable in the uk.
    So the last part of the question is if the part is no longer available in the uk & I fit the same size tube would the boom still be class legal ?
     
  2. AlanD

    AlanD Former ISAF Laser Measurer

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    The simple answer is no. You're meant buy a new complete boom or source a legally supplied sleeve from an old boom It's an arguable whether it was ever legal to use cut down top section as a boom from reading 26.(c) of the rules, but it's something that many have done for decades. When they were available legally, I always asked for the dealer to supply bare sections and all the fittings so that I could assemble my spars using corrosion inhibitor without having to remove all the fittings first.
     
  3. Elessar

    Elessar Member

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    I used a top section and the inner sleeve from my old (snapped) boom. All I did was drill out all the rivets which were holding the inner sleeve in, and then marked it up with the fittings on the top section.
    I usually do some events and they don't usually care. (Mainly because I never won any big events. =P)
    So if you want to do national and inland events... I would buy a new one, but if you are only doing local events and club racing you can make one yourself.
     
  4. stuck in the 80s

    stuck in the 80s Member

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    Thanks for the replies, Alan I was banking on you knowing the exact measurements, the problem is I don't have a broken boom that I can remove the inner sleeve from to measure,
    this is just to make a spare boom for low key club racing.
     
  5. Lazzzerrr

    Lazzzerrr Member

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    give APS a call... they have them in stock... they would be happy to go back and measure one for you!!
     
  6. 49208

    49208 Tentmaker

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    ********************************************************
    18. BOOM
    (a) A metal sleeve supplied by the builder of maximum
    length 900 mm may be fixed inside the boom. The
    sleeve shall not extend aft of the point 1220 mm
    from the front end of the boom (including plug).
    ********************************************************

    Now, we need to get Alan to ignore the next part, but if you have an extra 900mm left over from the top section after cutting to length for a spare (non legal) boom, you can make your sleeve from that. You just need to rip a slice down the length on a table saw so that you can then squeeze it to slide it inside the boom.
     
  7. stuck in the 80s

    stuck in the 80s Member

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    Thanks for that 49208 it may be the best option,
    no one appears to know the correct sizes of the now obsolete UK part ?
     
  8. sorosz

    sorosz Member

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    The last one I bought was a long time ago but I seem to recall it was a smaller diameter rather tube rather than a similar diameter as the boom with a slit cut down the length. It was held in place by the rivets to the gooseneck fitting I think.

    Is it possible to order it from West Coast and ship it to UK? I think they ship to Australia. I recently bought an OS starting watch from the UK and it didn't take much more than 10-days or so to get to the west coast. Maybe shipping to the UK would be about as quick. If they can't ship to the UK you could ask them if they would tell you what the alloy (usually stamped on the tube), wall thickness and outer diameter are.
     
  9. Merrily

    Merrily Administrator Staff Member

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    The part is not obsolete, just out of stock.
     
  10. stuck in the 80s

    stuck in the 80s Member

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    Merrily please phone laser performance UK before adding an uninformed sweeping statement like that,
    I did & the reply was that they no longer make or stock that item & wont be in the future, In my eyes that makes the part obsolete in the UK
    Why do you think I am asking for help on this forum?
     
  11. stuck in the 80s

    stuck in the 80s Member

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    Sorosz thanks for that,
    to be honest this hole idea now seems more trouble than its worth,
    Anyone in the UK want a free broken top-section?
     
  12. Merrily

    Merrily Administrator Staff Member

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    It's not obsolete in the sense that it is class legal. If they no longer stock it, then it seems like something is very wrong.
     
  13. stuck in the 80s

    stuck in the 80s Member

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    I think the answer is in what AlanD said,
    they don't want you recycling you top section into booms, so how long before the sleeve is no longer made or stocked by the US suppliers.
    But as you say, its not obsolete because its class legal,
    What would you call it when its no longer available anywhere in the world?
    out of stock?
     
  14. AlanD

    AlanD Former ISAF Laser Measurer

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    The sleeves are still being fitted into the booms, it is not an obsolete part. It's just that the actual part is not separately available, just like bare sections are no longer available, sleeves for the radial bottom sections, decks etc. The only reason why the sleeves were ever made available in the first place was to let people upgrade the old sleeves in their existing booms to the current sleeve. The sleeve should be shorter than 900mm, it is a smaller diameter than the section diameter and probably a similar thickness.
     
  15. 203

    203 Very Senior Member

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    APS lists the part as LP90418 in their on line catalog. It's 33 USD. Can you order it to the UK from a USA supplier? If they won't ship overseas, and it really *is* in stock, then you can get a US based Laser sailor to pick one up and send it to you. I'd be glad to do that as long as you do all the leg work, sort out the costs, determine customs procedures, etc.
     
  16. jeffers

    jeffers Active Member

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    Sounds like another way for LP to be making money, why sell a lseve when we can seel a whole boom....

    In all seriousness (and I know people will shoot me down in flames for this) just make one up and stick it inside your top section. Unless you are at worlds/nationals level no one will care. You are using a builder supplier tube and performing a practice that has been commonplace for many years in the class.

    I am sure you can find a broken boom somewhere to either have the sleeve out of it or measure it and make one up.

    There is a thread on here somewhere about sleeving the boom, it is probably in the FAQ section at the top of this forum.
     
  17. stuck in the 80s

    stuck in the 80s Member

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    Thanks Richard for the offer,
    the offer is likewise if you see anything in the UK PM me.

    Thanks Paul, when I started this thread I thought that someone would just have the measurements as they have probably been down this road before,
    yet no one has yet to come forward,
    49208 has had the best idea, thats poss the last resort,
    I know its not legal but I don't think that will matter at my club level.
    I ant no tree hugger but I don't like the idea that Ive ordered parts from halfway round the world when laser UK is an hours drive away.
     
  18. Sailorchick

    Sailorchick Member

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    Even at UK National level no one cares if you are using an official boom, or one you have made from official parts. Not really sure why anyone would. So long as its not a replica what is the problem?
     
  19. tonyquoll

    tonyquoll Member

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  20. sprayblond

    sprayblond Member

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    Well "builder supplied" becomes rather meaningless when the builder does not supply it. Availabilty of parts worse than ever from what I hear.
     

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