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Old 9th September 2005, 20:17   #11
B-17_Fortress
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Default Re: "Area 51" - The Railhead at "Dreamland"

You may be thinking that a 2x1 frame isn't very strong for the benchwork. Remember that the layout will have a 1/8 hardboard back to support the scenery and backscene. This will give a total height of around 8 to 10 inches which is more than enough for a rigid structure. Basically it is an 'L' Beam structure.

I'm off to another military vehicle event tomorrow, so probably won't make further progress until Sunday, when I hope to make the link that holds the two boards together and the leg stays.

Steve
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Old 11th September 2005, 21:20   #12
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Default Re: "Area 51" - The Railhead at "Dreamland"

Had another good days work on the bench work, which is now complete. The next step was the two 1/2 inch ply braces which connect the two boards and give support across the join. One end of the ply is pivoted on an M8 bolt while the other is slotted for M8 bolts and wingnuts to clamp the brace in place.

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Old 11th September 2005, 21:28   #13
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Default Re: "Area 51" - The Railhead at "Dreamland"

Next, to ensure alignment when the boards are joined. For this I epoxied a metal dowel into the end of one board, while the exposed end was waxed. In the other board, in the corresponding position, I drilled an oversized hole. This was filled with polyester based car body filler, the two boards were aligned and brought together until the polyester filler cured. Once cured, the two boards were separated again to leave a perfectly aligned hole with the dowel.
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Old 11th September 2005, 21:33   #14
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Default Re: "Area 51" - The Railhead at "Dreamland"

To ensure the boards stayed firmly together without a gap, a metal clasp was fitted to each side of the board. Once closed, the clasps pull the boards tightly together preventing any movement.

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Old 11th September 2005, 21:44   #15
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Default Re: "Area 51" - The Railhead at "Dreamland"

To brace the legs in the down position, a diagonal brace is pivoted at the legs own cross bracing while a removable pin holds the top of the brace in brackets attached to the underside of the benchwork. When the pin is removed, the legs and the diagonal brace move towards the board join line where they stow flat for transport.
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Old 11th September 2005, 21:48   #16
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Default Re: "Area 51" - The Railhead at "Dreamland"

One of the sections of benchwork also has an additional leg to support the centre of the layout. This is pivoted from one of the joining braces and also stows flat for transport. Here is this section of board with all the legs in the transport position.

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Old 11th September 2005, 21:58   #17
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Default Re: "Area 51" - The Railhead at "Dreamland"

Last couple of pics for tonight. Firstly the bench before the centre leg was fitted, beside the old layout for a size comparison. It is two feet longer and 6 inches wider.
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Old 11th September 2005, 22:00   #18
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Default Re: "Area 51" - The Railhead at "Dreamland"

Last pic, the bench with the centre leg in position. The only other thing that needs to be added to the legs are some bolts threaded into the end to allow height and level adjustment of the layout on uneven exhibition floors.
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Old 12th September 2005, 23:48   #19
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Default Re: "Area 51" - The Railhead at "Dreamland"

Today was a good day. It started out with a trip to the hobby shop to buy some turnouts and track. They didn't have everything I wanted, but enough to get started. First job was to plot out the track from my pencil drawing onto the benchwork.

The key points were the turnouts, so their positions were measured from the drawing, scaled up, and plotted on the board. The lengths of flextrack were then held in position linking up the turnouts, and drawn around.



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Old 12th September 2005, 23:54   #20
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Default Re: "Area 51" - The Railhead at "Dreamland"

Once the track plan was drawn out on the base ( except for the elevated yard ), cork floor tiles were cut into 3/4 inch strips for the trackbed. These were then glued down a foot at a time, with white PVA woodworking glue, tacked in place at the ends with Cyano Acrylate glue to hold them in place until the PVA set. The MDF baseboard was dampened slightly with a wet sponge as this allows a better bond of the CA to the MDF.

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