Aye, you'll get cracks where you don't want them.

---john---

 

You can actually make it weaker I have been told.

Weld an inch miss an inch.. that will change to weld a panel miss a panel by the end!

David

 

Graham, the tips I was given came from the guys who fitted the cage to the Power Station car and also Prep'd Andy Cookson's. They were telling me of their experiments over the years on what did and didn't work.

Weld an inch miss an inch was the order of the day and don't go forward (front end) or aft (rear end) of the strut towers.

Neil, when you do the bulkhead to floor seam you need to do both sides btw, under the car an inside for it to be really effective, although just the indise makes a pretty big difference I'm told

 

i hope it doesnt crack all the others panels will be done 1 miss 2 and it will be done top and bottom of the car

 

Body flex is a strange thing, and interesting comments Tim, thanks.

When i fitted my 6 point in the 911 splits showed after 3 years where none were before, nothing huge at all, but the centre section of the coupe shell were obviously stiffer now with the cage and all the strain of hillclimbing with rock-hard suspension was flexing through a smaller construction rather than the shell as a whole. This was with a bolt-in cage...

Graham

 

Neil, another point with the seam welding is don't bother to go higher than the top of the strut towers either!

 

cheers tim for the info

 

nas: A quick sketch of what you asked for.
I will leave you to tell them the pipe diameters by giving them the original parts. Any decent fabricator will work this way.
I have assumed you will keep the fuse box as is (the one next to the battery)
Hope this is ok!
TinyPic Video and Photo Sharing

If you like i can fax it to you from work tomorrow, pm the number if you want tonight.
Graham

Why has Tinypic suddenly changed all the way they used to do things? All my pics come across to large now

 

great drawings them graham but i think i have sent you the wrong info (due to stella)

i was after the washer bottle and the overflow tank for the rad (the 1 that sits in the inner wing . basically i wanted them as 1 unit roughly about the size of a battery , fitted where the battery normally is . i,ll add a pic to the post for a rough idea graham


sorry to mess you about

 

I though the request strange, as I couldn't see any real benefit in the mods!
I'll wait and see.
Graham

 

tried drawing it graham but it wash gash so here go,s . 1 i made earlier



the overflow pot being smaller with the step down , both flush to the body , with the angle brakets you had on the others

 

Agree with the 'stich' weld thing, do an inch, miss an inch or so etc.
Rally cars I've seen being prepared do this. Apparently it is better for strength in an impact as it gives a degree of movement, dissapating the energy I suppose.

 

Neil.....you need to stay of the old nelson mandella m8.....

I bet you used to enjoy making things with cornflake boxes and sticky tape..

 

i made the bedding myself you like yahhh i have many more

 

fao dave, tim,john. do i need to do any seam welding in the car or shall i do it all from underneath it looks as though tthe inside bulkhead would benifit from a weld but i dont want to go over the top again and weld what is not needed
cheers help much appreciated

 

Both inside and underneath

 

I wouldnt bother too much on the inside and bulkhead, if welded properly you get penetration through the metal and into the car

 

think i,ll do it lightly then in side , just around the bulkhead and arches .

 

Are you using the registration of the shell? what's you're plans DVLA wise for this?

Dave

 

the shell has come with full s/history and log book

 

well the inside of the car has been welded just need to get it on its side and clean the arches out and the underneath then its ready for painting inside and under the bonnet

anyone got any ideas on colours with some pics please

 

Welding Lightly doesnt = Decent penetration.. so you will need to weld underneath too.. I welded all mine from underneath

David

 

dave it will be welded underneath , just need the time and 2 big tyres to put it on its side unless you want to rent me your spit rolls plus the welder is on holiday so having a weeks break .

 

I believe the thinking behind stich welding is to increase overall stiffness without changing the relative flexibilities of one part of the structure over another. As has been mentioned, if you stuff the front end you really want it to crumple and not transfer all that energy into the shell which is where you are. IIRC Possum Bourne's co-driver (Roger Freeth) died from internal injuries because his body was less able to cope with a severe impact than the car's shell was

An interesting thread

 

well lets hope i dont crash at 100mph and die

 

well decided today i want the car 100% right so the weld is being taken out from after the front struts to the front panel , i am changing the full front panel anyway due to being slightly bent , and hopefully neil at eclipse will sort the welding on the inner wings and chasis if the panels need replacing they will be .

 

I wouldn't bother doing all that work to undo what you have done. It really won't make any difference. It's not as if you are taking the thing up a rough forrest stage.

---john---

 

i just want the car right john and if it means spending a few hundred quid more to get it right so be it . plus if the car is not 100% spot on i,ll lose intrest , like the last 1

 

Fnuck sake just put it together..... don't be so pedantic.

 

its gotta be right or theres no point pedantic you have lost me john i,m from manchester (the real north )