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Modifications to a previous project

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Modifications to a previous project

Postby 9fingers » 23 Jan 2019, 18:43

I'm glad to say that normally when I complete and deliver a project I rarely get it returned for re-work :lol:

Last year I made a lightweight box that fitted onto a sack truck to enable a disabled friend of mine to transport model cars that he builds and races. He gets about on crutches and previously used carrier bags to hold his cars, tools and radio gear which was not very practical and things could get damaged.

Skids -photos 003.jpg
(219.02 KiB)


Skids -photos 002.jpg
(246.28 KiB)


Skids -photos 001.jpg
(224.52 KiB)


When he got a new mobility car (full size! :lol: ) the internal arrangement with the rear seats folded could not have been more awkward to get the box in and out of the car as virtually every protrusion on the back of the box caught on the various features of the less than flat/level loadspace.

What we needed was some form of sledge/skid runners to ride over the obstructions and make the box easier to get into the car.


This is what we came up with between us to fit to the back of the box. It needed to be as light as possible and yet rugged enough for the job.

Skids -photos 011.jpg
(266.21 KiB)


The curved skids were the most challenging part and the methods used are written up here.

http://www.thewoodhaven2.co.uk/viewtopi ... =20&t=3821

The skids and lengthwise part of the frame are 20mm square oak and the other part are 18mm square with chamfered corners for a little bit of interest.

Each side is made of these pieces with mortise and tenon joints.

Skids -photos 015.jpg
(270.95 KiB)


Skids -photos 014.jpg
(273.48 KiB)


A bridle joint is used where the end of the curve meets the end of the frame straight and a scew will pass through both members into the box if the ere is any tendency for the laminated curve to creep at any stage.

Skids -photos 009.jpg
(263.25 KiB)


A couple of lateral rails space the two skids 400 mm apart.

Skids -photos 012.jpg
(224.02 KiB)


The complete assembly screw onto the back of the box.

Skids -photos 007.jpg
(345.12 KiB)


and a couple of diagonal braces add some rigidity

Skids -photos 006.jpg
(305.47 KiB)


All ready to go with a road test tomorrow :eusa-pray:

Skids -photos 005.jpg
(219.2 KiB)


Thanks for reading

Bob
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Re: Modifications to a previous project

Postby Malc2098 » 23 Jan 2019, 18:59

:text-goodpost:
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Re: Modifications to a previous project

Postby Jimmy Mack » 23 Jan 2019, 20:32

How lovely...what a top friend you are Bob

Nice bridles too

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Re: Modifications to a previous project

Postby Rod » 23 Jan 2019, 21:43

Nice adaptation

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Re: Modifications to a previous project

Postby Doug » 23 Jan 2019, 22:35

That could also come in handy if the snow they keep predicting finally turns up, nice work Bob
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Re: Modifications to a previous project

Postby 9fingers » 23 Jan 2019, 22:46

Doug wrote:That could also come in handy if the snow they keep predicting finally turns up, nice work Bob


:D It takes some pretty severe weather to get snow down here Doug. We are in the test valley which has its own micro climate a few degrees warmer than even a few miles away. Some put it down to the 4 tides per day caused by the isle of Wight but I'm not so sure.

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Re: Modifications to a previous project

Postby Mike G » 23 Jan 2019, 22:54

Ooooh.......mortise and tenon. AND a bridle joint!! Wey hey... :lol:
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Re: Modifications to a previous project

Postby 9fingers » 23 Jan 2019, 23:01

Mike G wrote:Ooooh.......mortise and tenon. AND a bridle joint!! Wey hey... :lol:


I do like to use proper joints too Mike.
Plus of course not a single edged hand tool was raised from the bench in the execution of the whole job! :lol:

Bob
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Re: Modifications to a previous project

Postby StevieB » 24 Jan 2019, 00:09

Nice - jobs like this can be quite satisfying when they bring benefit to someone rather than being decorative - top man!
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Re: Modifications to a previous project

Postby Mike G » 24 Jan 2019, 08:46

9fingers wrote:.......not a single edged hand tool was raised from the bench in the execution of the whole job! :lol:......Bob


It must be nice to be retired and have the extra time to do things your way. :lol: ;)
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Re: Modifications to a previous project

Postby Rod » 24 Jan 2019, 09:23

It’s a shame that the motobility car has been made that way, you think they would have made the inside user friendly.
Your friend must be quite fit as it still seems quite a chunk to move around. I’m surprised you haven’t fitted some motors to it Bob .

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Re: Modifications to a previous project

Postby 9fingers » 24 Jan 2019, 11:00

Rod wrote:It’s a shame that the motobility car has been made that way, you think they would have made the inside user friendly.
Your friend must be quite fit as it still seems quite a chunk to move around. I’m surprised you haven’t fitted some motors to it Bob .

Rod


His car is a standard build Ford Kuga supplied without the need for mods by the Motability scheme.

When the back seat folds down there is a flap that covers the hinge gap between loadspace floor and the seat back and a 90mm difference in levels. This needs the ski curve to ride over it on the way in and the rest of the runner to stop it kicking up on withdrawal.

I've run estate/hatchback cars all my driving life from Morris traveller through various makes/models to my current Skoda. In the last couple of decades it seems that the seat padding design has dominated over the ability to have perfectly flat load space with seat backs either only folding to within a few degrees of horizontal or as in the Kuga a step in levels and an angle that varies with load.

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Re: Modifications to a previous project

Postby Andyp » 24 Jan 2019, 15:05

Elegant solution Bob, expertly executed.
cheers

Andy


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