Roll Bar + Chassis Plate Help

[Tatey]

I'm at the stage of welding the roll bar to the roll bar mounting plates, i've fettled the roll bar down so it now sits level on the plates, however when placed on the chassis the roll bar does not sit in the middle of the 2 plates, it is sitting more on the outside of the plate, i've attached a drawing to show you what i mean:



The roll bar sits approximately 17.5mm from the outer edge of each side of the chassis. How has everyone else tackled this problem? Have you just fettled down the roll bar until it sits in the middle of the plate? Or have you just left it like that?

Also with the triangular chassis plate for the roll bar box thing, one side is 121mm and the other is 125mm, which side goes against cp3 and cp4? Is it the shorter 121mm side and the 125mm side goes vertically down? Depending on which way it is positions the angle it points at will change.

Cheers

[flyerncle]

I tweaked the roll bar to shorten it slightly in a pipe bender and as I said I bored out the center of the plates to put the pipe into and welded both sides of the tube. They do come close to the edges but you should still be able to fix the nuts underneath.

[gingea1pom]

I kept cutting the roll bar down until the ends sat in the middle of the mounting plates.

Do make sure both legs are the same length though, I know it sounds obvious.

Cheers Ginge

[Tatey]

30 mins with the grinder and its nearly sorted, just got another 20 mins at they both should be in the middle of the plates, i've been doing alternate side each time to make sure i dont end up with a wonky roll bar .

[twinturbo]

Take some photos so I can see what yar on about..

If I have a similar issue, I think I will just cut a hole in the plate and weld top and bottom.

TT

[Tatey]

As you can see the roll bar isn't located exactly in the middle of the plates.

Oh and before anyone mentions, yes i know the left hand CP6 is upside down....

[Bonzo]

Hi Tatey

Must be having one of my stupid days today ..... Couldn't make head nor tail of your post when I read it earlier

Just read it for a second time & it was crystal clear, now I notice you have posted some pics

Yes I would sit the roll bar centraly on the mounting plates, looks much easier on the eye.

I have just been out to look at my chassis & had a gander at the triangular plates. Although I cant get there to measure it ..... I would say that the shorter side goes against the other CP plates.
I have a feeling when you offer them up, it'll become clear ... You should have a nice open corner to weld rather than a tricky butt weld

[gingea1pom]

Looking good,

Now if I was building another one and got to the stage you are at now I would weld the cross bar on next as mine pulled in loads so the bolt holes don’t line up by 2mm either side. Then weld the roll bar to the plates.

Sounds confusing hope you know what I mean.

Cheers Ginge

[Tatey]

I think i know what you mean ginge. Maybe i should stop fettling it now and get hold of a crossbar and hopefully that will sort out all of my issues, taking the lazy option and all

What has everyone made the cross bar out of?

[Bonzo]

If memory serves me right ( Roll bar down the pit at the mo ) I used a length of the bush tube steel, the 33.7mm OD stuff.

It was there kicking about & looked plenty man enough for the job