Thanks Thanks:  0
Likes Likes:  0
Needs Pictures Needs Pictures:  0
Picture(s) thanks Picture(s) thanks:  0
Page 1 of 2 12 LastLast
Results 1 to 15 of 18
  1. #1
    Join Date
    May 2003
    Location
    Broome West Aussie
    Age
    63
    Posts
    3,683

    Default Help needed to design a...

    Yes Im working on behalf of a fellow woodbutcher whos in need of a xar trailer cum workshop for when she begins her new life as wandering turner headin out of Darwin

    If you havent seen or met her Robynmau posted an intro HERE And Ive taken the liberty of seeking your assistance in designing her trailer

    Yes Im a cheeky buggar and no she didnt ask me and yes I reckon its a good idea if only to get you workin on a more detailed LARGE scale thing

    Now Im assuming the average small car length is what about 10ft... so Im guessing the plan is for a 15 to 20ft trailer behind the winnibango as they tour around Aussie {personnaly Id go 20ft but thats me... mmm on second thoughts I wouldnt cause I wouldnt be able to fit all the tools in 20ft! }

    Weight would be the biggest issue particularily getting it over the axles where it would be best placed... so to achieve this my first suggestion is the vehicle runs up into the trailer on ramps that have a sliding door to cover the back end right? with me? okay the front section that which would include the workshop would have heavy storage items backing onto a wall between the car and workshop... putting most of the weight over the axles... still with me? goodoh... say timber or the lathe itself along with chainsaw bandsaw small jointer some planes saws clamps etc a small width but full length wall bench along the front wall of the trailer (winibango end) holding bits and bobs... maybe timber storage?

    mmm thinking... maybe the lathe could be on a sliding stand so she can slide the thing out and lathe outside under the boab trees?... and while Im thinking a small air con over the bench would be a good idea... what about lighting? so shes gotta have a genie (size small but powerful enough to work the lathe plus lighting) mmmm what else? racks down either side of the car say above window height... so how highs this trailer? well lets look at the height of a winibango for a starter... what say 2mtrs? so a small car is how high? 1.6mtrs? damned if I know I drive an F100 what do I know of small cars?... okay thats anothery for yous blokes... so racks above the car so she can store stuff (ahem she is a woodbutcher!! Ive never met one yet that aint a hoarder) so what else?... mmmm?

    Okay so Ive given the seeds of ideas here now fellas over to you!! Nope I a) dont have the time to buggarize around with the program b) no interest in becoming so frustrated with the program I throw the laptop in the corner in disgust so Im givin it to yous mob...

    Any takers?
    Believe me there IS life beyond marriage!!! Relax breathe and smile learn to laugh again from the heart so it reaches the eyes!!


  2. # ADS
    Google Adsense Advertisement
    Join Date
    Always
    Location
    Advertising world
    Age
    2010
    Posts
    Many





     
  3. #2
    Join Date
    Feb 2005
    Location
    Melbourne, Australia
    Age
    42
    Posts
    2,344

    Default

    righteyo, fire away!
    I know not with what weapons World War III will be fought, but World War IV will be fought with sticks and stones.
    Albert Einstein

  4. #3
    Join Date
    May 2003
    Location
    Broome West Aussie
    Age
    63
    Posts
    3,683

    Default

    Quick buggar aintcha!!

    so first problem is the width... to wide mate come down to about 8ft 2in I think thats pretty much the standard width before she would need to get a permit in each state to tow it

    Next the length 30ft??? strewth!! I was working on 20 maybe 24ft take into account the length of the winnibango mate and youve created a bloody semi trailer rig! this could then create another licensing issue for her in that some galah in one state or another would make her sit her semi license to drive the thing

    mmmm okay height? mmm I reckon your about right there given the height of a winnibango

    Keep at it me ol china yer doin well
    Believe me there IS life beyond marriage!!! Relax breathe and smile learn to laugh again from the heart so it reaches the eyes!!


  5. #4
    Join Date
    Oct 2006
    Location
    Tallahassee FL USA
    Age
    78
    Posts
    4,650

    Default

    1. Use the space above the car bonnet for a storage mini-loft.
    2. Add a door on the driver's side of the trailer to accommodate the open door of the car; otherwise you either have to push the car in, or climb out the window and then slither through the trailer to the back.
    3. I think even small cars are more than 10ft long.

    Joe
    Of course truth is stranger than fiction.
    Fiction has to make sense. - Mark Twain

  6. #5
    Join Date
    Feb 2005
    Location
    Melbourne, Australia
    Age
    42
    Posts
    2,344

    Default

    what about this then for overall dimensions?

    What is going to be towing it?
    I know not with what weapons World War III will be fought, but World War IV will be fought with sticks and stones.
    Albert Einstein

  7. #6
    Join Date
    May 1999
    Location
    Grovedale, Victoria Australia
    Posts
    3,810

    Default

    You would only need 6' internal height. You are working outside most of the time.
    Take the walls out to the outside of the wheel arches, gives more storage area.
    Put a nose cone on the front, another storage area as long as it is light gear because when they check they go by the ball weight.
    Jim Carroll
    One Good Turn Deserves Another. CWS, Vicmarc, Robert Sorby, Woodcut, Tormek, Woodfast
    Are you a registered member? Why not? click here to register. It's free and only takes 37 seconds!

  8. #7
    Join Date
    Mar 2007
    Location
    Adelaide South Australia
    Posts
    544

    Default

    Having driven the car in the box how do you open the door to get out.

  9. #8
    Join Date
    May 2003
    Location
    Broome West Aussie
    Age
    63
    Posts
    3,683

    Default

    Quote Originally Posted by martrix View Post
    what about this then for overall dimensions?

    What is going to be towing it?
    Im not sure but I think the overall width is around 8ft 4in? including wheels and wheel arches... as I said Im not sure but think thats the way its done

    A winnibango

    Id imagine one of them all in one units... dont know the motor size as she didnt say... an mate Im only tryin to get things rolling here.. I'll give her a hoi an see what she reckons when she reads the thread

    Joe I'll go measure the missus proton "beast" an get back to you... not sure shes got a proton but hey its a small car eh!
    Believe me there IS life beyond marriage!!! Relax breathe and smile learn to laugh again from the heart so it reaches the eyes!!


  10. #9
    Join Date
    Oct 2001
    Location
    Warwick, QLD
    Age
    41
    Posts
    3,462

    Default

    For the vehicle widths, the max width allowed is 2.5m (8ft 4in) as per the australian vehicle standards bulletin

    There is also a maximum length of 12.5m but that incorporates the towbar length as well.
    Have a nice day - Cheers

  11. #10
    Join Date
    Mar 2007
    Location
    Melbourne
    Posts
    473

    Default

    sell the car and buy one of those double decker buses, kit it out, and precilla queen of the woodchucks here we come.....simple

  12. #11
    Join Date
    Oct 2006
    Location
    Tallahassee FL USA
    Age
    78
    Posts
    4,650

    Default

    A lot of the snowbirds we see around here have the motor yacht towing the car. Don't know the brand, but they use a nifty tow bar that folds back against the front bumper; doesn't have to be removed.

    Joe
    Of course truth is stranger than fiction.
    Fiction has to make sense. - Mark Twain

  13. #12
    Join Date
    May 2003
    Location
    Kuranda, paradise, North Qld
    Age
    58
    Posts
    5,650

    Default

    Does it really need to be a fully enclosed trailer? That's a lot of extra framing and sheetmetal (= weight) plus mucking around building doors etc. On something that size the frame will wrack a lot against the doors which don't and you get stress cracks in the framing, chafing of metal against metal with resultant ugly rust marks.

    I reckon that an open car trailer with a box on the front, shaped for air flow would be the go. The box can house all the "toys" and will protect the vehicle from stone chips and should deflect most of the diesel haze around it.

    The starting point of the design exercise should be the what the maximum weight of ther trailer can be. The tow vehicle will have a maximum allowable tow weight, plus a maximum GCM (Gross Combination Mass). You'll need to know what the gross weight of the mobile home will be when fully loaded (fuel, water, food etc etc) to see how much of the GCM is left to play with, because with some vehicles Gross Vehicle Mass + Towing Capacity is greater than GCM. ie, you can have a fully loaded trailer or truck, but not both. Next thing, have either of the drivers had much/any experience driving a combo of the length and weight we're looking at here? Do they want to go to the trouble of getting the appropriate licenses? Do they want to drive a heavy combination around the countryside? It's a lot more tiring than driving a car, requires more concentration, room to maeuver, space to stop and park, fuel, registration, etc etc etc.

    Once you've gone through all of that and you knwo how much your trailer can weigh and how much the run around will weigh you'll need to look at appropriate axles, springs and brakes and the weight thereof. For the dimensions, the first thing you need to know is what size the vehicle will be. It's going to be aq very different trailer if you want a Suzuki Jimny as a run around as opposed to a Pajero.

    I would look at paring down, as much as possible what's considered a must have to bring along. I'd try to fit it all in the tow vehicle and just have a small run around riding on a two wheel dolly trailer and a protective "car bra" fitted to the runaround to minimise stone chips etc.

    A large heavy trailer is no fun to tow. It's not for nothing that trailers with rigid draw bars are referred to as "pig trailer" in the transport industry. Trailers with drawbars that swivel the front axle(s) are called "dog trailers" because, like a good dog they'll faithfully follow you. Towing a heavy pig trailer is like trying to take a pig for a walk on a lead, it's hard work and the pig wants to go its own way.

    Actually, I'd look at whether a ruanaround was strictly neccesary. Think about push bikes, motorbikes or even motorised push bikes.

    Mick
    "If you need a machine today and don't buy it,

    tomorrow you will have paid for it and not have it."

    - Henry Ford 1938

  14. #13
    Join Date
    Jun 2005
    Location
    Helensburgh
    Posts
    6,441

    Default

    Quote Originally Posted by journeyman Mick View Post
    Does it really need to be a fully enclosed trailer? That's a lot of extra framing and sheetmetal (= weight) plus mucking around building doors etc. On something that size the frame will wrack a lot against the doors which don't and you get stress cracks in the framing, chafing of metal against metal with resultant ugly rust marks.
    The answer to the racking and general skin movement on the frame is glue. I have just built a second enclosed trailer which has very little framing except around the dorr entries and mid length along the sides, though it is smaller than the one proposed. The first one showed signs of cracking around the rear door and was not rigid enough, the second was bonded with Sikaflex and it is rigid. We glued everything including the floor to the chassis and it is far better than mechanical fixings of which some were used but not many. All the panels were made in a CNC controlled sheet metal factory including the chassis members which we folded ourselves. Just remember it must be complianced before registration so I would tackle that issue first as we had to get ours inspected by a certifying engineer before the registration authorities would look at it.
    As to the woodworking part of it, don't forget to allow for exhaust extraction, this will need it as the air will be stalled in a very small area with the same amount of dust as in a larger shed. It is going to weigh A LOT and I would be sitting down and carefully working out if the finished trailer was towable legally with the intended vehicle. There are small and large Winnebagos and it will have to be one of the larger ones to have a trailer of this size. I drive trucks for a living and don't think I would like to drive around Australia towing a trailer of this size if it were me. I wonder if there is a legal allowable length limit on something like this?

  15. #14
    Join Date
    Feb 2006
    Location
    Central QLD
    Age
    57
    Posts
    257

    Default

    If it were me I would talk to the manufacturer, Winnebago, they should know the GCM etc.
    There are quite a few of them towing trailers and would be able to advise where to start.
    Cheers,
    Buzzer

  16. #15
    Join Date
    Dec 2004
    Location
    Moonta Bay in the Copper Triangle, S. Australia
    Posts
    815

    Default

    As an ex-trucky the best advice I can give is that this must be made by an engineer, one who knows what he's all about in the trailer world.

    The old 8 feet and 2 inches wide was the absolute maximum allowed for the drivers side mirrors. If the trailer is that wide, the mirrors will not mirror the road behind your trailer. This unit will be daunting to drag along, especially if these people are inexperienced tow drivers. For a load of tools and stuff, the construction will need to be stronger than a caravan. A cross-wind, or one from either front corner will test the drivers skill.

    In any case, recent trailer law changes have been made in most states, and if you visit your local State Transport Department website, you can find all of the info required. Don't forget your licence, does it caover the wieght and combination?

    Something like this will involve special tow bars, full braking system and the overall length of both tow vehicle and trailer as well as weight, both laden and unladen . . .blah blah blah. After all, it is the Government who has all the say in this matter. After them comes the insurance man.
    Buzza.

    "All those who believe in psycho kinesis . . . raise my hand".

Page 1 of 2 12 LastLast

Similar Threads

  1. design help
    By Clinton1 in forum DESIGNS & PLANS FOR PROJECTS
    Replies: 6
    Last Post: 6th Jan 2007, 11:23 PM
  2. Challenge to design Ultimate Cutting/Finishing TAble
    By NewLou in forum WOODWORK - GENERAL
    Replies: 9
    Last Post: 25th Apr 2005, 08:43 PM
  3. Help needed on stair design
    By Bob Willson in forum WOODWORK - GENERAL
    Replies: 24
    Last Post: 15th Oct 2004, 11:47 AM
  4. Design help NEEDED!
    By AlanS in forum WOODWORK - GENERAL
    Replies: 7
    Last Post: 16th Aug 2004, 10:14 AM
  5. Modern design vs reproduction
    By Driver in forum WOODWORK - GENERAL
    Replies: 10
    Last Post: 2nd Jun 2003, 07:02 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
  •