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  1. #1
    Join Date
    Oct 2004
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    Oakleigh East, Sunny Vic
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    3

    Default Drawer slides advice needed.

    Hi,
    I want to make a sliding drawer for my camper trailer.
    It will be 1700mm long X 500 wide X 30 high. I need 100% extension on the drawer, in fact, over extension would be a ideal.
    Does anyone have any suggestions for making suitable drawer slides?
    Or where can I get the formed steel profile that I can use to run bearings along? I have seen these in commercially available drawers but have no idea where to get them
    Any suggestions welcome.
    I am planning on making the drawer itself from Marine ply.
    I can't weld but I can cut and screw!
    Thanks in advance,
    Cheers,
    Steck

  2. #2
    Join Date
    Jan 2004
    Location
    Mackay North Qld
    Posts
    6,446

    Default Extension drawers

    Hi steck

    A trip to the local 4WD outfitters ARB or the like might help.Many of them have demo wagon body with extension drawers that roll out from under a rear built in.Go in for a squiz if you can and you at least get ideas.

    The one I looked at had utilized roller bearings around 25mm diam.


    One set of bearings was mounted axis horizontal for the drawer to bear on top and bottom and the other set mounted axis vertical to align the drawer.

    From memory I think aluminium angle section was screwed to the drawer body and the the roller ran against that.

    The kitchen drawer cased extension frame bearing rollers may be available in that length but I am thinking you would not not like the price. Lincoln Sentry would be a likely place that MAY stock them.

    The fly in the ointment might be gettingthe full extension as this is around the length of your trailer I,m guessing. You need longer than your drawer for support unless you can work out some thing that telescopes.

    cheers
    Grahame

  3. #3
    Join Date
    Jul 2006
    Location
    Canberra
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    0

    Default

    It may be a bit wonky, but I've seen people attach two full extension slide together. I don't remember how long they were, but 2 x 600mm slides would get you to at least 1200mm. If it works with 2 it may work with 3 , which would give you 1800mm. IIRC, one inner slide one was attached to the outer part of another slide-pair with a shim of timber.

    Now, even better perhaps, would be to use something like these - 120kg, 1220mm by themselves, or double them as I wrote above with these - 120kg 500mm. This would make your 1700+ and give you a sturdy 120kg or less to play with. Given you're talking about only 30 high, I'm assuming you're not storing 44 gallon drums in it , so the weight penalty to doubling up these slide may be OK. But don't blame me ...

    Rob

  4. #4
    Join Date
    Feb 2007
    Location
    brisbane
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    245

    Default

    I think you are going to really struggle to find overextension slides in the length you want.
    Do you have any idea of the costs of heavy duty over extension draw slides?

    Accuride make the best range. And their 9301 range go up to 1.5 metres.
    However, the cost will make you faint. Call Concept Latch and Lock in Melbourne (Tullamarine I think but do a web search). They are aussie distributors for Accuride.

    Make sure you are sitting down when you get a price.

    I priced 900mm 9301's a while back and they were $280 a pair. I would love to know just how much the long ones are here bit they are US$370 on the web.

    There are other brands of HD drawer slides but not that long.
    Cheers

    Craig
    Brisbane

  5. #5
    Join Date
    Jan 2008
    Location
    Australia
    Posts
    10

    Default

    I used to have a link, but can't find it now. It was from an australian 4wd forum. maybe do a search?

  6. #6
    Yonnee's Avatar
    Yonnee is offline Trailer Bloke & Mild Mannered Moderator
    Join Date
    May 2007
    Location
    Tooradin, Vic.
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    52
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    1,318

    Default

    How much overextension do you need?
    You could combine a heavy duty idea such as the 4WD roller drawers that Grahame has also suggested, attached to a separate frame that then houses the drawers on a second set of shorter extensions.

    The main framework can be made from RHS and roller bearings.

    Bear in mind also, the smaller, cheaper drawer slides don't hold alot of weight.
    Too many projects, so little time, even less money!
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  7. #7
    Join Date
    Nov 2006
    Location
    Heidelberg, Victoria
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    79
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    Default

    Hi Steck,

    Don't muck around, as a designer, I recommend Accuride precision ball bearing slides.

    I have used them on many projects, with uses you would never dream of.

    They are made in the States, and reasonably priced.

    I have no affiliation with Accuride, so check out www.accuride.com or contact Concept Latch, Lock & Hinge on (03) 9335 1822 for a catalogue.

    They are the Melbourne Agents in Brunswick.

    Model 9301 will extend up to 60", which may be enough. You could have two shorter drawers, opposing each other, ie, back to back.

    My two bobs worth,

    Ken

  8. #8
    Join Date
    Jan 2008
    Location
    Australia
    Posts
    10

    Default

    http://www.hafele.com.au/isapi/onlin...dh/tchsfdh.asp

    Page 97 - load rated at 340kg!

    All these will be very expensive, and possibly a compromise on what you actually want. If you want heavy load rating, as well as over extension, it might be best to make your own.

    That way, when I need to make a set at the end of the year, I can copy your design

  9. #9
    Join Date
    Oct 2004
    Location
    Oakleigh East, Sunny Vic
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    3

    Default

    Thanks for the ideas so far.
    I can just buy a ready made drawer from Tool Box for close to $1000!
    But I am hoping to come out of it cheaper than that if I make my own.
    Engineering wise it looks a bit tricky.
    Still thinking.
    Any thought on running 1" square tube down the side and running it on bearings? Should come close to full extension if I can stop the cantilever effect??
    Cheers,
    Steck

  10. #10
    Join Date
    Jan 2004
    Location
    Mackay North Qld
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    6,446

    Default

    steck

    With a 1700 long drawer overhang I say you will need probably a 50 x 25.The weight of the drawer unloaded alone is likely to induce a bending moment in the 25mm square.

    Other than to say that, I will refrain from any further comment as this sort of design stuff is not really my thing.

    Grahame

  11. #11
    Yonnee's Avatar
    Yonnee is offline Trailer Bloke & Mild Mannered Moderator
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    Default

    Quote Originally Posted by steck View Post
    Thanks for the ideas so far.
    I can just buy a ready made drawer from Tool Box for close to $1000!
    But I am hoping to come out of it cheaper than that if I make my own.
    Engineering wise it looks a bit tricky.
    Still thinking.
    Any thought on running 1" square tube down the side and running it on bearings? Should come close to full extension if I can stop the cantilever effect??
    I've been trying to design the same sort of thing for myself for the back of my Pajero. The stumbling block has been to stop it from coming completely out when opening the drawer. And putting a stop in means being unable to fit the drawer in the first place.

    However, I think I may have finally overcome this... it would take ages to describe it. I'll try and draw it and post it up.

    Also, I agree with Grahame the the 25mm tube might be a little light for the application, seeing as a 5' long drawer would hold a fair weight of stuff.
    Too many projects, so little time, even less money!
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  12. #12
    Join Date
    Nov 2006
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    Heidelberg, Victoria
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    Default

    Steck,

    There are plenty of willing helpers, however, more info is required, as Grahame would say.

    A drawer of only 30mm high stretches the imagination a bit, why so shallow, what are you going to use the drawer for, and how much weight is going into it?

    Is the drawer going to slide out from under the end of the trailer, if so, how much room do you have around it?

    If you have the facilities, can you provide a sketch, or a snap of where you intend to install the drawer. More info the better.

    Another two bobs worth,

    Ken

  13. #13
    Join Date
    Feb 2007
    Location
    brisbane
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    Default

    Yonnee it's easy. Don't put the stop on the bearing line. A bit of angle above the bearing line and then a bolt through the drawer at the same line will act as stop.

    To stop cantilever effect you need to put two bearings relatively close together on the upper level of the roller set.

    This is a DIY plan for my first set of drawers for the cruiser. Now days I reckon that full extension heavy duty drawer slides are the GO however a heck of a cost penalty.

    http://hdj80.customer.netspace.net.a...wn_drawers.htm
    Cheers

    Craig
    Brisbane

  14. #14
    Join Date
    Oct 2004
    Location
    Oakleigh East, Sunny Vic
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    Default

    Thanks again for all the ideas and suggestions.
    This is the camper trailer that I want to put the drawer in.
    On our last trip to Birdsville, we used plastic tubs to put all the food and supplies in. SWMBO overstacked the tubs ( my opinion!) and they were too heavy so that HHMO (me) popped a disc in his back in trying to get the tomato sauce out.
    The drawer will mainly hold all the food supplies for our long trips. Items such as cans, jars, packets, etc. The height of the drawer can be 40 cm maximum.
    The camp kitchen I built on the tailgate is 40cm wide so that is why I need a full extension as the drawer will have to come out 40 cm just to be level with the end of the trailer.
    Perhaps some Roller wheels under the drawers would help support the weight as well?
    It will go here:

    [IMG]file:///Users/steveramsey/Pictures/P1010075.JPG[/IMG]

    And here are the drawers I made 5 years ago for the back of the Patrol. They are well travelled but I am not sure if the basic design will be sturdy enough for the trailer. This is the steel rail sitting on bearings design.
    I have also added a picture I found on the internet of another possibility.
    Cheers,
    Steck

  15. #15
    Join Date
    Oct 2004
    Location
    Oakleigh East, Sunny Vic
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    Default

    Yonnee,
    I stopped my Patrol drawers from rolling out by putting a screw through the drawer in line with the top bearing. It has to be screwed in after the drawer is fitted and unscrewed if you ever want to remove the drawer.
    Cheers,
    Steck

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