Quote:
Originally Posted by hotspur
Very simple,'L' bracket on roof with hole in bottom,'L' bracket on inside of wall,with hole (half inch) a bolts goes through,a wing nut attaches underneath.there are 8 of these,very,very simple
I will post pics tommorow,too cold to go outside now.
Its a very simple system,with the bonus of adjustment for ground slippage,see the pic again,note the bolts and nuts,I can 'tilt' the roof if needs be about 5mm either way,(does this mean I have a 'tilt' train in my yard  )
also,the castors have 5mm 'play',not that I have ever needed to call on any of this,never had an issue,never had any maintanance,a bit of CRC to stop rust colour.
Cant go wrong with this design,I have seen a set up like you mention,I nearly went that way,then we figured this was more simple,less likely for lproblems,Hope this helps,
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Yes, well you were right.
Quote:
Originally Posted by [1ponders]
I use something similar to Chris, except my angle iron is laid flat to the bearer so the pulley sits on the edge of the angle. It works a treat. The angle is 4mm thick and the pulley is 5mm in the center. A bit of grease on the angle and its a smooth as butter. If any spots are tight a quick brush with an angle grinder or even just a rub with some sandpaper soon frees up any tight spots.
The only disadvantage to this is some form of hold down has to be used to secure the roof.
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That is a possible change. I think that could be plan B and a more simple mod to what I already have is plan A.
Quote:
Originally Posted by Lester
Hi Greg, I use C channel on my roll off roof observatory. As well as the 8 wheels that take the weight of the roof, I fixed 4 wheels at each end that run at 90 degrees to the others stopping any sideways friction.
You could do this with your set up also.
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Some sideways wheels could work although mine is only 100mm C purlin whereas yours looks like 150 or bigger.
Greg.