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Old 09-06-2010, 09:17 PM
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gregbradley
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Join Date: Feb 2006
Location: Sydney
Posts: 18,183
Quote:
Originally Posted by hotspur View Post
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,
Yes, well you were right.

Quote:
Originally Posted by [1ponders] View Post
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.
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 View Post
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.
Some sideways wheels could work although mine is only 100mm C purlin whereas yours looks like 150 or bigger.

Greg.
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