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Squire ground anchors secured into a 6 inch thick concrete pad with extra reinforcing wires. Then the best and heaviest chain I could find. I think it's 11mm tungsten carbide hex, which is pretty hard to cut.
IanMmmm - thats pretty much what I wanted when I started - very neat as well!
BallsofCottonWool - yeah the anchor is the weak point I think. However I have used that type of loop before with expansion bolts into concrete walls for livestock and the bolts have sheared before the loop broke. I dont know how easy it would be to cut it with bolt cutters? I think the picture makes it look thinner than it is.
I like the rebar idea - Im planning to move house in a year (or so) so will be building my own shed then and may just use that idea! Thanks.
Thanks for the comment on flickr - I had a cheeky look through your pictures and DSCF7675 looks like you were having fun. Love cycling in the snow myself.
Oh and that crap asda lock was there for the picture. Stronger lock going on tonight and chain on the way from a mate in the merchant navy that has swagged a small bit for me.
David.
[To make a shed anchor to fix to the wall, use someof thes, posibly double up and bolt through from outside of shed, can also be used to cover the hinges.Just hammer flat, also double nut it on the inside with some large washers.
www.toolstation.com/shop/Structural/Builders+Metalwork/Heavy+Duty+Strap+Bend+1600mm+Total+length/d210/sd2797/p43454
This has got me all worried, all my bikes hang from the ceiling unchained, and the garage door, has an old internal lock badly fitted by me, only the petrol mower is chained down and thats to the rowing machine, My bikes are not exensive, but they are the only ones i have and not insured seperatley from house/contents. Will be busy at the weekend I think...
"One of the major hints suggested by chain manufacturers is to make sure the lock doesnt rest on or near the floor so that you cant get the force on the bolt cutters that you usually would when using bodyweight."
Yup. But it's complete cobblers, part of the snake oil the lock industry peddles tbh, just designed to make you feel like you're doing more to secure the bike than you are (and also because it's a handy getout if your chain gets cut). I'm always a wee bit wary about mentioning these videos, because of the source, but if you check youtube for "captain cropper", you'll see a wide variety of chains cropped with hand tools, both on the ground and in the air. Zanx (who made the videos) reckons it's easier to cut a chain in the air... But, you do have to be aware that the videos were made by Almax, a lock manufacturer, so not exactly unbiased!
where do you get rebar from? how would you bend rebar into that shape? or get it cut to length?
look up steel reinforcing or concrete products and supplies in your local Yellow pages.
i used
http://sitebuilder.yell.com/sb/show.do?id=SB0001838476000020
They'll cut and bend it to shape for you using big scary machines!
we had it bent to shape 98
http://www.rebar.uk.com/bs8666.html