MM77 Posted October 21, 2009 Report Posted October 21, 2009 A guy came around today to collect some parts I sold on ebay and we got to chatting (as you do). He said to spray that expanding foam stuff in all the holes in the shell to stiffen it up, then plate over them. Sounds like a marvelous idea to me. Has anybody done this, or even heard it done before???
Admin Vista Posted October 21, 2009 Admin Report Posted October 21, 2009 That expanding foam stuff that will absorb and trap moisture? nope sounds like a bad idea to me.
flyingbanana Posted October 21, 2009 Report Posted October 21, 2009 i wouldn't advise it for the same reason vista says......it holds water .......i rebuilt a moggy and it was full off it and yes it was rotton in all the places it was
MM77 Posted October 21, 2009 Author Report Posted October 21, 2009 That expanding foam stuff that will absorb and trap moisture? nope sounds like a bad idea to me. Yes quite a good point that.
Retromotorsport Posted October 21, 2009 Report Posted October 21, 2009 it would just stiffen up the suspension.. in a bad way , ie load it up with weight, the weight of the foam, plus the plates and the 20kgs of water that is trapped .. lets take the holes up the C pillar, they are in the flat surface and swaged, which is stronger and less flexable than a flat sheet, the C pillar strength coming from the 90 degree bends it and its thickness on a Mk1, hence the rot at the bottom of a mk2's C pillar from the flex thats there, very rare you see a straight 1/4 to C panel join. So plating them is a waste of time.. I bond alloy plates on there to keep some customers happy, as they have seen it in other cars.. funny though, when you look at crashed cars the C Pillar is normally still in shape, the rear 1/4 is bulged out by it and the roof too.. so really the top and bottom needs the work, not the middle. To see what capping off all the voids in a car does take a tupperwar tub and stick it out side in the sun, leave it overnight and have a look at it in the morning, the moisture in the air has condensed, and unless the cars voids are 100% air tight the air changes and more moisture is condensed, i seen a lot water in weld in cages that havnt been fitted properly.
Admin Mk2Jo Posted October 21, 2009 Admin Report Posted October 21, 2009 Nice comprehensive answer Gary
MM77 Posted October 21, 2009 Author Report Posted October 21, 2009 Thanks for that Gary Can always rely on you to crush any "genius" ideas I have
over_head_cam Posted October 21, 2009 Report Posted October 21, 2009 Could you use enough so that it would float?
MM77 Posted October 21, 2009 Author Report Posted October 21, 2009 Could you use enough so that it would float?Ask Top Gear that one?
X FLOW EDDY Posted October 21, 2009 Report Posted October 21, 2009 A chap i know sprayed expanding foam in the rear quaters of his pug 205 rally car, saved him a few rear quater panels over the years !!!!
D4N Posted October 21, 2009 Report Posted October 21, 2009 A chap i know sprayed expanding foam in the rear quaters of his pug 205 rally car, saved him a few rear quater panels over the years !!!! Untill it probly bounced off the road on the first jump it seen. They all seem to do that
5hane Posted October 21, 2009 Report Posted October 21, 2009 Nice comprehensive answer Gary definatly lmao allways a nice essay, but you just have to read them (well i do )
mk14dr Posted October 22, 2009 Report Posted October 22, 2009 A chap i know sprayed expanding foam in the rear quaters of his pug 205 rally car, saved him a few rear quater panels over the years !!!! Weren't 205's galvenised from the factory? That'll be what stopped him needing rear quarters Unless your implying that it helped withstand deformation during a crash?
Dalek Posted October 22, 2009 Report Posted October 22, 2009 The original minis had expanding foam in the sills to add strength. Just made them sills rot out even quicker ! Imaging welding with that crap in there, fire risk. Nice idea just won't work though.
oxb1l Posted November 16, 2009 Report Posted November 16, 2009 Brilliant idea if its a stock car your building ,have heard of it in rally cars but i dont fancy welding as Dalek says or trying to put the thing out if it goes on fire i'd say no for something you're keeping Bill
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