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Old 6 Days Ago   #106
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Re: Rauksternīs 500F -65 rebuild

Quote Originally Posted by fiat500 View Post
Hi Seb. The floor was originally welded in underneath the thick reinforcement brackets at the rear and under the rear cross member of the floor.

It was originally placed on top of the front footboard. It was originally under the sills.

I think it was originally a one-piece floor which would include under the central spine. The floor would have been under the thicker metal of the tunnel. So I fitted it all like that. When welded in it is perfectly strong and stable.

Take your time and get every last scrap of rust, grease and underseal away from the weld area; even tiny specks or amounts of grease will make it a poor job. Your welder also needs to be a bit higher setting than normal.

Good luck.
The body is blasted, so there is not much grease and rust letf. But I hear you, will make sure.
Is it a spot welder you have used, or have you drilled and used a MIG? Thatīs what I have at hand anyway

Did you replace the last piece of the original floor from underneith the spine aswell? Better to weld the new floor directly to the spine, without old sheet metal inbetween I reckon.
Iīm thinking it would be smart to do while down there...
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Old 6 Days Ago   #107
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Re: Rauksternīs 500F -65 rebuild

Quote Originally Posted by Raukstern View Post
The body is blasted, so there is not much grease and rust letf. But I hear you, will make sure.
Is it a spot welder you have used, or have you drilled and used a MIG? Thatīs what I have at hand anyway

Did you replace the last piece of the original floor from underneith the spine aswell? Better to weld the new floor directly to the spine, without old sheet metal inbetween I reckon.
Iīm thinking it would be smart to do while down there...
On the car I've finished, the floor under the tunnel was good, so I left it and welded to it.
I don't have a spot welder and most of the welds would be hard to access. So I used puddle welds by drilling holes and welding through; this works out really strong.
Most of the welding can be done from above with the car sitting as normal. When you weld to the outer sills this way, it makes a neater job if you weld from the back of the flange of the floor.
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Last edited by fiat500; 6 Days Ago at 09:29.
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Old 2 Days Ago   #108
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Re: Rauksternīs 500F -65 rebuild

Quote Originally Posted by fiat500 View Post
On the car I've finished, the floor under the tunnel was good, so I left it and welded to it.
I don't have a spot welder and most of the welds would be hard to access. So I used puddle welds by drilling holes and welding through; this works out really strong.
Most of the welding can be done from above with the car sitting as normal. When you weld to the outer sills this way, it makes a neater job if you weld from the back of the flange of the floor.
Sorry about the continous streem of questions
Whan you drill, do you drill through both or just the top one?
Iīve been experimenting with both options, but not sure whatīs the "right way" to do it.

/Seb
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Old 2 Days Ago   #109
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Re: Rauksternīs 500F -65 rebuild

Quote Originally Posted by Raukstern View Post
Sorry about the continous streem of questions
Whan you drill, do you drill through both or just the top one?
Iīve been experimenting with both options, but not sure whatīs the "right way" to do it.

/Seb
Seb, you can get proper spot-weld drills which leave the bottom layer of two welded sheets intact. For what you're doing, that isn't important. On most of it, just roughly cut the floors out leaving the welded edges, then grind the areas of spot-weld. Where the floor contacts those thicker plates at the back you can just use an 8mm drill and go right through the welds..you need the holes for later plug-welds.

At the central tunnel you need to think what you're doing. I cut the floor along the line of the flange as you need to keep the area under the tunnel still attached. I drilled a series of holes later for the welding.
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Old 2 Days Ago   #110
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Re: Rauksternīs 500F -65 rebuild

Quote Originally Posted by Raukstern View Post
Sorry about the continous streem of questions
Whan you drill, do you drill through both or just the top one?
Iīve been experimenting with both options, but not sure whatīs the "right way" to do it.

/Seb
If your a tool junkie like myself and always looking for an excuse for more tools, check out the "Spitznagel Spot Weld Drill", i picked one up a few weeks ago to do the 500 body work, and its exactly the tool needed to do what we will all eventually have to do on these cars.
They can be used with the support back pc for doing seam or flange drilling, or it is removable to do drilling in harder areas.


There are also clones out there that do the same job.
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Last edited by Bounding Bambino; 2 Days Ago at 02:10.
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