lonfire Posted March 15, 2005 Share Posted March 15, 2005 hi guys,I have a load of astralite 4 with only nyloc nuts and bolts. I want something quicker for setting up ie. trussing clips.. what do people use and what do you think is best? the sort that are just a U shape with a pin sticking out? or a pin like a bolt but where you put a split pin through to stop the pin falling out.. how much are such things? thanksrgdschris Link to comment Share on other sites More sharing options...
Nick Evans Posted March 15, 2005 Share Posted March 15, 2005 I would contact the manufacturer if I were you. There are replacements available, and you have something knocked up (ooer) but any deviation from the manufacturers spec will leave you in deep do do if it all goes pear shaped and you have not got structural calculations to back up your choice of replacement. Link to comment Share on other sites More sharing options...
vinny baby Posted March 15, 2005 Share Posted March 15, 2005 I use quick realease pins on my trussing, it saves time when rigging, as you dont have to naff about with bolts and washes. I got my pins from litestructures, they were about a £1 each, which is ok. They are as you say a U shaped clip with a pin welded to the inside. I dont know what the regualtions are concerning these, you are best off talking to litestructures direct. you can also get conical adapters that you can use instead of the normal spigots. these slot in then you place a spit pin through the truss and the conical to secure it. the quick release pin comes in both locking and not locking http://www.litestructures.co.uk/images/products/trussing/pg51_qrp_small.jpg you can see the conical adapters on the end of the trusshttp://www.litestructures.co.uk/images/products/p1_1a.jpg vince Link to comment Share on other sites More sharing options...
Jivemaster Posted March 15, 2005 Share Posted March 15, 2005 You MUST use products supplied by the truss manufacturers as suitable or there are no approvals for your modified truss. Yes spring and locking pins do exist. Link to comment Share on other sites More sharing options...
lonfire Posted March 16, 2005 Author Share Posted March 16, 2005 hi,cheers guys.. I wasn't thinking of making any.. I have contacted litestructures.. but was just unsure if I should be buying locking pins or not.. have also enquired about the conical shaped spigots.. looks like they would stop the problem we have where some people have over tightened the bolts which have made some of the spigots oval! very anoying.. rgdschris Link to comment Share on other sites More sharing options...
lonfire Posted March 16, 2005 Author Share Posted March 16, 2005 hi,just incase your interested I got a reply from litestructures: "You could use quick release pins - QRP51 @ £1.50 each instead of the nuts & bolts. The conical shaped spigots you mention are only for the LitePro range." that seems expensive.. hope they do a bulk discount :-( I bet thats plus vat 2!! thankschris Link to comment Share on other sites More sharing options...
Nick Evans Posted March 17, 2005 Share Posted March 17, 2005 If your truss was designed to take nuts and bolts then you must not use conical pins because the load would only be taken on one side of the pin, unless you intend hammering them in so hard that the "outer" hole expands so much that both ends of the pin make firm contact. £1.50 does not seem much to pay for an item engineered to a particular specification, such as truss pins are. Whilst you can walk into B&Q and buy bolts which fit the holes, these are unlikely to meet the manufacturers specification and are therefore unfit for the purpose. Link to comment Share on other sites More sharing options...
lonfire Posted March 17, 2005 Author Share Posted March 17, 2005 hi,yeah litestructures said that the conical spigots are for a certain range and not suitable for me :-( I'm not planning on buying something from b&q so thats ok.. wouldn't trust my trussing with some bodge job.. just means we have to save up some money.. probably put bolts and spigots in one end of all the lengths and use truss pins on the other ends.. if you see what I mean.. I was more thinking of the trilite pins which are around £1 each I believe, when I said expensive... but I see your point.. just got to buy smaller amounts or save up I guess.. as we aren't a commercial venture every £ spent has to be justified.. thankschris Link to comment Share on other sites More sharing options...
MartinGreen Posted March 17, 2005 Share Posted March 17, 2005 Ionfire, I know various truss makers use pins and R clips. People like Prolyte & Tomcat are users of this type of pin and clip. How many are you looking to get will depend on the cost. Conical shaped pins would stop the problem so long as noone tried to hammer the living hell out of them. I would recommend a Prolyte dealer in the UK, but being new I don't know quite what the guidelines are on advertising someone else on here. If you PM me I will be happy to forward you details of some people I know. Link to comment Share on other sites More sharing options...
paulears Posted March 17, 2005 Share Posted March 17, 2005 carefull with the word 'trilite' this isn't an litestructures product. very similar, but the astralite (and their other versions) have a welded on strengthener at the end of each tube, and a link from each tube end to the others. trilite is similar but has plain ends and no cross links at the end of each piece. spigots are similar. For the sake of 3quid ish per length, quick pins are the way to go. Link to comment Share on other sites More sharing options...
Nick Evans Posted March 17, 2005 Share Posted March 17, 2005 Conical shaped pins would stop the problem so long as noone tried to hammer the living hell out of them.I will say it again. Conical pins must not be used in truss designed to be held to gether with bolts through the chords. A bolt has parallel sides, a conical pin is, well, conical. Bolted truss has identical sized holes, pinned truss using conical pins has a smaller hole on the not hammered side. Therefore a conical pin put in a joint designed to accept a fastener with parallel sides will only touch the truss where the pin is thickest ie on the hammering side. On the not hammering side there will be a gap all around the pin. Therefore the joint on that side is not bearing any load therefore all of the load is carried on the other side of the tube. This leads to asymmetric loading, which is not how the tube is supposed to be loaded. Link to comment Share on other sites More sharing options...
paulears Posted March 17, 2005 Share Posted March 17, 2005 What everyone is really saying is that you Use the correct manufacturers products only! Link to comment Share on other sites More sharing options...
MartinGreen Posted March 17, 2005 Share Posted March 17, 2005 My apologies, your right. I misread the post and thought that he wanted to know where to get conical pins from. I should know better as well. Sorry :( Conical shaped pins would stop the problem so long as noone tried to hammer the living hell out of them.I will say it again. Conical pins must not be used in truss designed to be held to gether with bolts through the chords. A bolt has parallel sides, a conical pin is, well, conical. Bolted truss has identical sized holes, pinned truss using conical pins has a smaller hole on the not hammered side. Therefore a conical pin put in a joint designed to accept a fastener with parallel sides will only touch the truss where the pin is thickest ie on the hammering side. On the not hammering side there will be a gap all around the pin. Therefore the joint on that side is not bearing any load therefore all of the load is carried on the other side of the tube. This leads to asymmetric loading, which is not how the tube is supposed to be loaded.<{POST_SNAPBACK}> Link to comment Share on other sites More sharing options...
henny Posted March 18, 2005 Share Posted March 18, 2005 stick with the original boilts and go out and buy a 3 quid socket for your cordless drill , this then makes it almost 10sec or less per bolt, ian Link to comment Share on other sites More sharing options...
lonfire Posted March 18, 2005 Author Share Posted March 18, 2005 hi,yeah I know trilite is a trade name for three bar trussing from opti.. and no I'm not planning to buy theres because there cheaper.. and yes as litestructures have pointed out the conical spigots are for a particular range.. so its just a case of saving up some money and buying some from litestructures.. what are peoples thoughts on locking vs non locking.. litestructures do both.. the problem I've got is that people have over tightened the bolts and bent some of the trussing and the spigots.. which means putting it together can be a real pain.. need to round a few spigots and ends out really.. I've heard from a lot of people that this is a problem they get all the time.. hence why trussing pins are better.. rgdschris Link to comment Share on other sites More sharing options...
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