chris_uk
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Registered: 8th Jul 03
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I did ask on my project thread but not everyone reads that..
So here is the problem..
I have the hardtop here
And the inner skin sat on the hardtop here
Because i can be doing upwards of 160mph i dont want this seperating and flying off, i was thinking about coating it in a thick resin then bolting it together using a number of m6 bolts with nice big spread washers and place bags of sand on it, then once its gone off remove the bolts, fill the holes and get it coloured..
Does anyone have another idea of how i can bond these two together?
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Robin
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Registered: 7th Jan 04
Location: Northants Drives: Clio 182 Cup
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C clamps will be less damaging
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chris_uk
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Registered: 8th Jul 03
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Yea, what about products to use? I though about stikaflex but i know that has a rubber type dry property and didnt think it would be as good as resin but im no bodyshop expert.
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Robin
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Registered: 7th Jan 04
Location: Northants Drives: Clio 182 Cup
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What about using the stuff your car is glued together with? That works for bonding fibreglass to aluminium apparently so should work for fg to fg.
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Steve
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Registered: 30th Mar 02
Location: Worcestershire Drives: Defender
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fibreglass matting and resin?
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chris_uk
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Registered: 8th Jul 03
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Thats not a bad idea robin as when its dry its solid! Ill have a look into that, not sure where to buy it tho.
Steve, thats was my first thought, do you recon adding some matting will make the bond stronger?
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Steve
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Registered: 30th Mar 02
Location: Worcestershire Drives: Defender
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yeah should do
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chris_uk
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Registered: 8th Jul 03
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Apparently the stuff used for the chassis is heat treated so thats out of the question.
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RichR
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Registered: 17th Oct 01
Location: Waterhouses, Staffordshire
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Crestobond structural adhesive or plexus-no need for bolts and you'll never separate them
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RichR
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Registered: 17th Oct 01
Location: Waterhouses, Staffordshire
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Don't go with Steve's idea
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Steve
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Registered: 30th Mar 02
Location: Worcestershire Drives: Defender
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why? it will be as strong as the original fibreglass structure what you are bonding too
Or is this jsut another case of overengineering a problem for the sake of it? eg cad designing a log bagger
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Gary
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Registered: 22nd Nov 06
Location: West Yorkshire
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Because lee works in an industry involving a lot of fibreglass so is going to know what he's on about more than you.
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RichR
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Registered: 17th Oct 01
Location: Waterhouses, Staffordshire
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No; it won't be as strong and not will the bond-plus it'll take significantly longer to do. Plexus or crestobond is what you need. You'd have a chance with needlemat but you'll struggle to get it and chop or wr won't give a good bond
Tell me all about you fibreglass experience Steve....
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Steve
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Registered: 30th Mar 02
Location: Worcestershire Drives: Defender
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So? im not saying there arent other solutions, but to say dont do something indicates that it wouldnt be suitable, there is aboslutely nothing wrong doing as I said.
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Gary
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Registered: 22nd Nov 06
Location: West Yorkshire
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quote:
Originally posted by LiVe LeE
Tell me all about you fibreglass experience Steve....
Must...resist...memecreator
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Gary
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Registered: 22nd Nov 06
Location: West Yorkshire
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quote:
Originally posted by Steve
, there is aboslutely nothing wrong doing as I said.
How the actual fuck do you know that?
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chris_uk
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Registered: 8th Jul 03
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quote:
Originally posted by LiVe LeE
Crestobond structural adhesive or plexus-no need for bolts and you'll never separate them
The hardtop doesnt sit in the correct place so while the adhesive is curing i need to hold it in a certain place using a bolt gives me perfect adjustability to put it where i want it.
Im going to attach the inner skin to the car.. Cover it in adhesive then place the hardtop on top then adjust its position with the bolts and then leave it to cure so i know once its cured its a perfect fit.
Once it has cured i can just fill the bolt holes and then wrap it/paint it or whatever im doing.
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RichR
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Registered: 17th Oct 01
Location: Waterhouses, Staffordshire
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It is not suitable
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Steve
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Registered: 30th Mar 02
Location: Worcestershire Drives: Defender
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why
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RichR
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Registered: 17th Oct 01
Location: Waterhouses, Staffordshire
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because the bond won't be good enough. Even if the area is keyed well, the chance of the bond between a fully cured component and a new ply of laminate will be virtually zero; it'll act as a peel point.
Not only that but do you know the resin system that was used to manufature those two parts? I don't, not by loooking at them, it could be an epoxy, a vinylester or a polyester resin - it could be orthorpthalic or isopthalic. I couldn't tell you what it is and so I couldn't tell you the appropriate system to even attempt to use for your suggestion.
Structural adhesive is made exactly for this purpose and it won't matter what its made of
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Steve
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Registered: 30th Mar 02
Location: Worcestershire Drives: Defender
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I think you are just trying to baffle me with bullshit
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RichR
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Registered: 17th Oct 01
Location: Waterhouses, Staffordshire
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quote:
Originally posted by chris_uk
quote:
Originally posted by LiVe LeE
Crestobond structural adhesive or plexus-no need for bolts and you'll never separate them
The hardtop doesnt sit in the correct place so while the adhesive is curing i need to hold it in a certain place using a bolt gives me perfect adjustability to put it where i want it.
Im going to attach the inner skin to the car.. Cover it in adhesive then place the hardtop on top then adjust its position with the bolts and then leave it to cure so i know once its cured its a perfect fit.
Once it has cured i can just fill the bolt holes and then wrap it/paint it or whatever im doing.
That's fair enough but to avoid unnecesary work; can you not G clamp it or tape it into position?
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RichR
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Registered: 17th Oct 01
Location: Waterhouses, Staffordshire
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quote:
Originally posted by Steve
I think you are just trying to baffle me with bullshit
not at all Steve, I think you're full of shit tbh
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Gary
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Registered: 22nd Nov 06
Location: West Yorkshire
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I honestly can't believe your arguing here steve.
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chris_uk
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Registered: 8th Jul 03
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Lee, i could but i want i think with bolts (m4 size about 100mm long) i can position the hardtop exactly where i want, with clamp they wont hold a position they will just clamp until they items are together but it might be too much and clamp too far.
I dunno i could look at it but i need to clamp it in position dry so i can make the hardtop fit propperly before bonding it.
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