Jump to content

Damo2929

Members
  • Posts

    16
  • Joined

  • Last visited

  • Days Won

    2

Posts posted by Damo2929

  1. so the manufacture has come back with the expansion rate of plastic thay recommend for the ladder in the catalogue

    2mm per 10degrees celcius per meter so the temp varience of 60 degress of -10 winter to 50 in direct sunlight

    so on my 4.5 meter run that we are looking at thats 54 mm, and the other side is 9.5 meters that a 114 mm.

    the advice from is to

    Quote

    place and remove track pieces in summer and winter

    which is just unworkable.

    am tempted to replace the ladder with with presure treated wood on the stright sections and just putting th plastic stright in the recycling but it's hard to  justify with it being £200 worth.

     

     

     

     

     

  2. My dad said glue the track to the felt, then remove the pins holding the felt and place aluminium bar down the side with slots in for the few fastenings needed to allow the felt to slide. which if my small bits don't work out then i will have a look at doing as the. The track is mostly decoupled from the plastic, but i would need to keep to set track to keep by geometry neat any tidy.

    Overall i think the plastic might be ok as a deck as per Duncan's work on a wooden lader but the plastic on plastic ladder is a no and i wouldn't recommend it to anyone going forward.

    • Thanks 1
  3. well just cutting the bed didn't made a difference, I have noticed the issue is only on the straight sections as I laid a full curve and that is fine this morning, unlike the straight bit.

    As Duncan didn't have this much trouble with the wooden ladder I can only assume it's the plastic ladder that's the causing it.

    am just going to have to switch to Peco double and long set track on the straights which is a pitty since most of the track work is straight. mind you should speed up laying because will only need a pin or two per bit as the sleepers will be fixed.

    just means I am going to have to move to dropper wires rather than using bonding wires.

     

  4. Thanks i have just gone though in depth, i see he used the same type of plastic in simular sizes however wood for the ladder while the deck left exposed, while i have used plastic which is quite dense as it is the 50mm pole cut in half, the two plastics have differing texture and density might be increasing the issue in my setup. I will run the circular saw though the plastic deck as based on Duncans specified rate mean smaller bit should only expand by a mm or so when at less than half meter. With it then expanding into the gap made by the saw the track might not see the movement.  I will then see what that does to the cycle over the weekend.

  5. I just used this stuff and have noticed the expansion and contraction is a bit more than track pin breaking.

    In the day time it expands a lot opening gaps in the track. Then at night when cooler shinks so the track expansion gaps disappear buckling the track until it warms up again.

    Am going to try some methods to fix the issue, this being ensure the plastic base has gaps every 300mm on the straights, and ensuring my track peices are cut into half yards to spread the movement across more joints. 

    I will see how i get on

     

    • Like 1
  6. Hi Tony,

    thanks for the welcome, I can imagine the aus temps can go way higher than here, I had a false start last year where I started building the track bed lower using deckboards then the mrs moved her bird feeder and steped on it and broke some of it so I decided that wasn't robust enough lifted it scrapped my cut corners and turned all the strights into planters. then moved on to building a cabin for a home office as I started a work from home job.

    I came back to it this year and came across recycled plastic products which i snapped up but had to wait until after lock down and working hence why am building in late summer. I decided to add the decking to make beds simply to protect it and allow the mrs to plant round it.

    with the track laying I did have expansion it's was about 1 to 1.5 mm ( creditcard width ) between each section when I laid it, however at night the gaps are closing, looking at it the plasitic base seams to shrink a lot over night where I have one track buckle then in the day when the plastic base is warming and expanding rapidly the gaps are opening to about 5 to 6 mm as the rails is not expanding at the same rate.

    It's all the filcris track bed and am thinking I missed something when laying it, as it's expanding way more than I thought as I did leave that expansion gaps too but am thinking I maybe should have cut the 1.2meter straight board into smaller sections 300mm sections with 5 mm gaps to spread the expansion over move expansion points and as such not drag my track round as much. if anybody else has used this stuff it did you have simular issues ?

     

     

  7. so far I have laid 10 yards of track and am experencing issues with expansion.

    it seam that the plastic is expending pulling the track apart in the day and at night contracting causing the track to buckle 😒.

    anybody have any advice on how to handle this with the plastic base ?

     

     

  8. the viaduct

    24 bricks make the viaduct for making a double track version with 2 bricks back to back, a full weekends cutting as i have a shoulder problem that slowed me right down.

    fixed using compress expanding foam and ground stakes

    6.thumb.jpg.34dbbf8e9ea1fcdb8a1173a060b2e731.jpg

     

    IMG-20200904-WA0000.thumb.jpeg.69708eb0ab85f07389a369ec6fcc8aa8.jpeg

     

    IMG-20200908-WA0001.thumb.jpeg.c0178756bab723c9fa5e613a4bae7f52.jpeg

     

  9. Description : tail chaser around the garden on raised beds down either side with spanning bridges between the beds.

    Controls: DCC with block detection using merg kits as well as Rocrail on a raspberry Pi for semi and autonomous operation

    Distance: about 30 meters or about 2 scale km.

    Material: Garden railway plastics from the usual supplier, peco trackwork

    Regional bias: LNER however as always with elements of whatever i like.

×
×
  • Create New...