Frame Welding

[rab shropshire]

Right basically i managed to get hold of this rockman isis frame from cocky with the hope of getting it welded up and having a few months fun out of it. I have phoned round a few engineering shops and they are not too keen to take on the job for liability reasons.

What i want to do is fill in the cnc cut outs and have a plate welded front and rear

I suppose what i am asking is will it be strong enough.

and does anyone on here weld or know someone that would do a good job at it.

preferably in the north yorkshire area

but could post to a welder

[Rob Leech]

How do chap,

if you're only looking to have a couple of months out of it, i'll give it a go if your willing to pay postage? But dont expect it to last much longer than that, its quite a large crack in very much the wrong place

I train and re-certificate welders for a living and have alot of experience in ally TIG.

Pop me a pm if your interested pal and we'll have a chat about it .

Cheers,

Josh.

[Alle.C]

as Rob said, it's in the very wrong place for welding it

[Muel]

Use you're head, there is never a good place to re-weld a frame. They crack or snap because of high stress in that area, it's not likely to go away is it?

That'll be plenty strong enough if it's welded well. Personally I'd get hold of some U6 or whatever grade the frame is, and make two little oval things to slot into the holes, with chamfered edges, then fill the chamfer with weld.

If you put a plate over the top, then all the stress will just move along to the back end of the plate IMO, and it might just go there.

[forteh]

Use you're head, there is never a good place to re-weld a frame. They crack or snap because of high stress in that area, it's not likely to go away is it?

That'll be plenty strong enough if it's welded well. Personally I'd get hold of some U6 or whatever grade the frame is, and make two little oval things to slot into the holes, with chamfered edges, then fill the chamfer with weld.

If you put a plate over the top, then all the stress will just move along to the back end of the plate IMO, and it might just go there.

I was going to suggest that but couldnt be arsed to type it out

Filling the cutouts with some barstock cut/filed to a snug fit and welded in should improve the strength dramatically over a simple plate.

[Rob Leech]

Use you're head, there is never a good place to re-weld a frame. They crack or snap because of high stress in that area, it's not likely to go away is it?

That'll be plenty strong enough if it's welded well. Personally I'd get hold of some U6 or whatever grade the frame is, and make two little oval things to slot into the holes, with chamfered edges, then fill the chamfer with weld.

If you put a plate over the top, then all the stress will just move along to the back end of the plate IMO, and it might just go there.

This man speaks the truth.

We'll get it sorted though.

No real need for U6/T6, unless you were intending on normalising and re-hardening, but the frame would have to be normalised before any welding takes place. Plus, its not as easy to do as it sounds .

To get past the overall softening of the area i normally put the frame straight into sand when i've finished welding, this allows the frame to cool slowly, increasing the chances of it having some hardness in the area .

Think im going to have to plate it, but i wont really know until the frames here.

Rab, will pop you a text later on chap .

Josh.