Thanks Thanks:  0
Needs Pictures Needs Pictures:  0
Picture(s) thanks Picture(s) thanks:  0
Page 4 of 4 FirstFirst 1234
Results 46 to 59 of 59
  1. #46
    Join Date
    Sep 2010
    Location
    Lebrina
    Posts
    1,099

    Default

    Quote Originally Posted by soundman View Post
    Karl mate...."What is compliant now may not be compliant later" is a commonly raied cop put.....it holds absolutely now water anywhere.

    What matters is was it complinat at the time it was built, was it compliant at the time it was certified, was it compliant at the time it was inspected.....was it compliant when it left your hands.....what happend after that is completly irrelivent to what exsited at the time it was claimed or required to be certfied as compliant.

    The law and the courts very much make a distinction between what was compliant at the time and what may have happend later......if the design or workmanship was incompetent, the regulators and insurers are very capable of making the distinction.

    As far as horse floats.....my example has not a thing to do with horse float design and everything to do with documentation and modification.
    The insurer and the courts made a distinction between what was compliant when the trailer was built and what was not compliant at some time later.

    The bottom line is..you ( regardless of who you are or how many trailers you build) are responisble for the design, workmanship and parts selection of any trailer you make...regardless of who you are, and the law states you are responsible for keeping recrds......when the $#@t hits the fan and the case goes to court.....you better be able prove what you did and produce evidence of what you used.

    When things come to court your dismissive and over simplistic arguments will not cut any ice with the opposing barister or the judge.

    Remember...you cant in these peoples pockets and tell em its raining......remember these guys argue for a living and people try it on with them every day...and lose.
    Not sure how you see ongoing compliance issues as a "cop out". At no time did I or will I suggest building a substandard anything, for exactly the reasons which you mention.
    Not sure where you get the idea that I am trying to work to a somehow lower standard or in some way fly under the radar. You will note my comment previously relating to dodgy assessments.
    I made the point that compliance is by no means a lifelong state. A simple accident causing physical damage can render compliance invalid in a second.
    I also wrote that if legal proceedings were in action, that something had already gone very wrong as they were a reactive process to a failure and that the desire was to build a trailer that would withstand scrutiny as exampled by my suggestion to utilise HT fasteners, (most spring suspensions are supplied with no name mild steel bolts), as well as avoiding the use of Ally welding in structural areas. If you don't have a failure, then you don't have a case to answer.
    Horse floats are an interesting case as it relates to duty of care. An argument could be made they are an unsafe design in that they often require operation in an unevenly loaded condition. I did fully understand your point regarding the horse float as it related to modifications.



    OH BTW...when we are talking about light trailers.....a person inspecting that trailer is not responsible for the design, workmanship and parts used in the construction.....they are responsible for certifying the the trailer had the appearance of being roadworthy at the time they inspected it....the manufacturer..that is you..remains entirely and exclusivly responsible for its design and construction....and for the life of that trailer.

    cheers
    They are responsible for certifying that it complies with the VSB regulations on the day as regards brakes, tyres fitted, lighting, attachment of safety chains, grade thereof and hitch rating being adequate for the registered mass.
    As you say, they cannot be held responsible for workmanship, maintenance and design outside those parameters covered by the relevant standards.
    In the scheme of things, Gazza's trailer would have been a fairly simple build if he had been able to get the material rolled as he originally believed possible. The design utilised no welding of Ally in structural areas, (even the hitch could have been attached without welding of the Ally).
    If anything, the use of trusses, while very effective in the right application, introduce a greater unknown into the build over a section of known and certified mechanical properties.

    In many ways we are both on the same side.

  2. # ADS
    Google Adsense Advertisement
    Join Date
    Always
    Location
    Advertising world
    Posts
    Many





     
  3. #47
    Join Date
    Aug 2009
    Location
    NSW
    Posts
    330

    Default

    ok thanks karl looks like i will give the alloy welding a miss, how about a bolt together steel trailer in the same way the aluminium trailer was going to be built? may look a little poxy tho being bolted i will have to look around for other steel trailer ideas or just buy a trailer already built

  4. #48
    Join Date
    Apr 2002
    Location
    Brisbane
    Posts
    5,773

    Default

    Bolted together steel trailer.....for God's sake why?

    The art and science of weded steel boat trailers is pretty well established....the welding and engineering are both trivial matters.

    With the time and energy spent considering this aluminium red herring.....you could have built a small welded steel boat trailer.

    cheers
    Any thing with sharp teeth eats meat.
    Most powertools have sharp teeth.
    People are made of meat.
    Abrasives can be just as dangerous as a blade.....and 10 times more painfull.

  5. #49
    Join Date
    Aug 2009
    Location
    NSW
    Posts
    330

    Default

    Quote Originally Posted by soundman View Post
    Bolted together steel trailer.....for God's sake why?

    The art and science of weded steel boat trailers is pretty well established....the welding and engineering are both trivial matters.

    With the time and energy spent considering this aluminium red herring.....you could have built a small welded steel boat trailer.

    cheers
    because my welding sucks and i dont have a nice flat newly laid piece of cement most people will have as a starting point to lay out the steel, these are my attempt at DC TIG welding steel get my drift? lol

    Picture 047.jpgPicture 046.jpgPicture 045.jpgPicture 044.jpgPicture 041.jpg

  6. #50
    Join Date
    Nov 2004
    Location
    Port Pirie SA
    Age
    52
    Posts
    6,908

    Default

    I can see the main problem your having with that TIG welding... TIG and Galv dont mix well
    ....................................................................

  7. #51
    Join Date
    Dec 2012
    Location
    WA
    Posts
    68

    Default

    Quote Originally Posted by gazza2009au View Post
    because my welding sucks and i dont have a nice flat newly laid piece of cement most people will have as a starting point to lay out the steel, these are my attempt at DC TIG welding steel get my drift? lol
    Why not MIG steel instead?
    And there is no such thing as flat cement, build on trestles.

    Soundman is right

  8. #52
    Join Date
    Aug 2009
    Location
    NSW
    Posts
    330

    Default

    i would have loved to build my own aluminium trailer but seems i cant mate and the aluminium trailer would have been bolted together so no need for welding like a steel trailer

    i did download the plans from Glen L's web page but lost the plans on my old computer

    ive since found a great deal on a pre built trailer altho its only gal steel but its cheap at under 2k i think thats a better option

    still open to ideas on the aluminium trailer idea's as that is my ideal trailer i would much prefer if anyone can think of an idea or way around bending the aluminium I beams but to buy one pre built i would be looking at around 5k which is well out of my budget

  9. #53
    Join Date
    Dec 2012
    Location
    WA
    Posts
    68

    Default

    People have been trying to build a better mousetrap (aka Boat trailer) and galv steel still wins every time.

    Think of boat traiers as a consumable item.
    A chain is a s strong s its weakest link, and your fasteners and their mounting points are going to it

  10. #54
    Join Date
    Aug 2009
    Location
    NSW
    Posts
    330

    Default

    yeah Aufitt biggest problem of building the Glen L trailer was the hassle with galvanising i was quoted rediculous prices plus hiring a car trailer two times to tow the trailer to the galvanizers to be dipped (sydney to newcastle twice)

    how long do u guys think the Tectyl i think its spelt product can hold back rust on welds?

    ive found a new company just now who passed me onto another company than another one onto another company and they charge only $3.20 a kilo for galvanizing and they are local but a hassle getting the trailer to and from there

    i called a few shops about the C section steel and im getting mixed results some are trying to sell me steel C beams other are trying to sell purlins with 1.5mm wall

    the Glen L plans say to use C section steel 3" tall by 4.1lb whatever that is anyone know? maybe its 4.1lb per foot length of steel C section?

  11. #55
    Join Date
    Sep 2008
    Location
    Perth
    Posts
    363

    Default

    Galvanising is too difficult for me. My projects are typically made from duragal/supagal (so I can leave a junkyard of metal lying around the backyard and it stays good for a while). Older projects I painted with a brush, minimal prep (bit of sugar soaping and slapping on too much primer and paint). They are holding up really well, all out in the weather.

    I also did an experiment documented on here where I tried lanolin spray. I made up a project out of duragal pipe, sprayed down my raw weld zones with lanolin and many months later or maybe a year and there isn't a spot of rust. It's just sitting in the garden. I'm very impressed.

    Now I have a spray painting set up and I anticipate that will be even more awesome than my brush overpainting technique. The couple of projects I've sprayed down look great and seal well. I reckon they'll do just as well as the brush.

    Another example is a boat trailer I built a couple of years ago frequently exposed to salt water and the elements. Built out of duragal and all welds brush painted with cold gal and then overcoated with duragal paint. I also slapped a bit around outside the weld zones where I could be bothered. I know that one will succumb eventually but there is no visible rust yet.

    Long story short, galvanising is great but not the only way.

    Brush painting sucks and I hate it more than almost anything. Spray painting is great though.

  12. #56
    Join Date
    Aug 2009
    Location
    NSW
    Posts
    330

    Default

    i built this a few years ago a trailer frame but getting it to the glavanizer was going to be a real pain in the ass, now im driving a small 4 cylinder hyundai which i dont think could tow a car trailer plus the boat trailer frame so using C section steel thats already galvanized would be a very good option as it would give access to the welds on all sides to coat with something
    Attached Images Attached Images

  13. #57
    Join Date
    Dec 2012
    Location
    WA
    Posts
    68

    Default

    In my state (where we pay twice anywhere else in the world), can Galv a frame for $600, that's 20% he cost of a boat trailer for a 5m 1350kg boat.

    Couldn't build an ally OR steel trailer for that unless its such a full on custom that even Bulldog o Dumbuyer dont have a model to suit?

    An outboard is 15k, a decent hull Is 20k, what is the boat its going on?

  14. #58
    Join Date
    Aug 2009
    Location
    NSW
    Posts
    330

    Default

    while out fishing on the weekend in port hacking a south sydney river system my mate pointed out a chained up trailer at the boat ramp was for sale so i went over and had a look, price on the trailer was $650 i thought that cant be right so i called up the owner later on that night and picked it up today

    2008 model 4.8 meter (actual boat length) drive on trailer and the price was $650 plus it has 5 months registration, LED lights, spare wheel, i couldnt believe it no rust at all

    its probably not ideally built to suit the boat im building but ill take some better pictures during the day and shoot them off to the boat designer and ask where should i place rollers or more skids
    Attached Images Attached Images

  15. #59
    Join Date
    Apr 2002
    Location
    Brisbane
    Posts
    5,773

    Default

    There are a whole pile of presupositions, that realy should be chalenged.

    1. not being able to do something or do something well is not a good reason to do it whole lot more complicated way.....it just does not work.......so if you cant weld......don't try to build a trailer......it would be simpler and cheaper to learn to weld or get someone else to do it.

    2. galvanising is not the bee all and end all of rust prevention.......the reason commercial trailers are hot dipped galvanised is that it is relativly simple and relativly cheap to do so.

    3. galvanising is a tempoary measure...exposed to salt water and the eliments the galvanising will eventually disapear.

    4. you can do a pretty good job of preventing rust using paint...in fact chose your paint well and pay what is needed and it will outperform galvanising.........both my brother and my brotherinlaw have boat trailers that are hand painted and show no signs of rust after many years.

    cheers
    Any thing with sharp teeth eats meat.
    Most powertools have sharp teeth.
    People are made of meat.
    Abrasives can be just as dangerous as a blade.....and 10 times more painfull.

Page 4 of 4 FirstFirst 1234

Similar Threads

  1. Learning the right way to go about building a trailer?
    By auscab in forum TRAILERS & OTHER FABRICATED STUFF
    Replies: 14
    Last Post: 23rd March 2014, 11:14 PM
  2. RULES for building on top of a TRAILER?
    By MickShanti in forum TRAILERS & OTHER FABRICATED STUFF
    Replies: 3
    Last Post: 28th April 2013, 11:47 PM
  3. Aluminium ute tray trailer
    By Mick72 in forum TRAILERS & OTHER FABRICATED STUFF
    Replies: 13
    Last Post: 26th September 2011, 10:59 PM
  4. Building, rebuilding a trailer.
    By Oldneweng in forum TRAILERS & OTHER FABRICATED STUFF
    Replies: 9
    Last Post: 30th January 2011, 09:05 PM
  5. Trailer Building
    By smidsy in forum TRAILERS & OTHER FABRICATED STUFF
    Replies: 2
    Last Post: 28th December 2006, 01:43 PM

Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •