Steveh1's build

[SteveH1]

So i was given this roll bar its a standard caterham 7 bar

Untitled by stephen harborne, on Flickr

Untitled by stephen harborne, on Flickr

Untitled by stephen harborne, on Flickr

So my plan is to cut off the original mountings on the thick bar and put a flat bar plate on each end.
Then make a plate the same as cp3 and cp4 and mount them 50mm higher straight above cp3 and cp4 with nuts welded on the inside
Like build a box if this makes sense 50mm high

can anyone see a problem with this

Can i then weld 50mm box section between these boxes with the seat belt anchorage's welded into this bar

[SteveH1]

Ok so im not sure what to do about the roll bar

so i started making some of the chassis plates and despite what people were saying about just buying them laser cut i actually found the fabrication of these plates very rewarding and satisfying maybe its because there is a bit more work involved or maybe its because i saved money who knows.

so i got these drill bits a while ago its amazing the difference a good drill bit makes

Untitled by stephen harborne, on Flickr

i also got these during this week

Untitled by stephen harborne, on Flickr

Untitled by stephen harborne, on Flickr

m18x2.5 bar

[SteveH1]

So not sure what to do About the roll bar so when making cp3 and cp4 i cut the roll bar end plates and drilled them on top of each other so they are an exact match

Untitled by stephen harborne, on Flickr

both plates drilled
Untitled by stephen harborne, on Flickr

both plates nuts welded
Untitled by stephen harborne, on Flickr

[SteveH1]

Untitled by stephen harborne, on Flickr

Untitled by stephen harborne, on Flickr

Untitled by stephen harborne, on Flickr

[flyerncle]

If you have the means to do it,cut a hole in the roll bar plates and put roll bar through it and weld it,it will pull like a bast*rd when you do weld it

[SteveH1]

Originally Posted by flyerncle

If you have the means to do it,cut a hole in the roll bar plates and put roll bar through it and weld it,it will pull like a bast*rd when you do weld it

like the main bar will pull towards the centre
and surley welding it to a flat plate would be better than a plate with a big hole
not really sure what you mean

[flyerncle]

Put the tube partially into the central hole you make in the middle and weld both sides,much stronger.

Put at least 10 mm bolts through roll bar mounts and not book nuts and bolts,domed plated 12.9 cap screws look much better.

Just a suggestion and personally I am happier with it.

Westfield use one bolt through the base of the tube !!!!