TUBE FOR TRAY

[fatassgq]

Ok, have hit a bit of a snag with the tube tray. Only got an average bender and will only bend 4.5mm wall tube.
Doing all on the reasonably cheap so no flash benders being bought at this stage.

The main problem is that I was looking at going 60 od pipe but @ 6.2Kg/M
I am worried about weight. I have worked out that the total tray weight including floor pl. is going to be about 250kg+ or -. this sounded very heavy to me but I am used to a lot of weight on the back and the truck is set up this way.
The roll bar is the main prob cause it is high. And I was just generally hoping to be lighter overall

Do I have any other options?
I have seen drafty's roll bars and they look good. What are they made of?, dia etc?

[bubs]

60mm OD is a bit overkill in my opinon, 40mm NB seamless should be suffiecent

[fatassgq]

yeah starting to think I might have to sacrifice some 'bling factor' for weight. What wall thickness would people think is sufficient for safety/regulations etc
I think the bender may only do 4MM plus anyway!
It is going to have a double hoop on the roll bar and I think all up about 24 or so Metres of tube!

Cant afford seamless!

[Wooders]

I thought 1.75" (40mm) dia with .120" (3mm) wall was regarded as norm

[beebee]

That's way overkill in my opinion. I am doing a heap of barwork this weekend and coming week and it's all 32NB Heavy wall (4mm). I believe this is slightly overkill as well as even ANDRA only require 32NB Medium wall (3.2mm) for drag car cages (as far as I have been told). The reason that I am going for a thicker wall is for a bit more impact resistance not overall structural rigidity.

Also I think all the rigs rolling out of bootie fab central are only 32NB Medium wall.

I am about to put up another post regarding tube bending and dies and stuff so reading that may help somewhat with what you are doing.

[fatassgq]

I would say that you will find that the former that you have purchaced has a much larger radius and therefore puts less stress on the tube.
I don't want any bends with large radius so this is a drama.
I think it is definitely a former/die problem not the bender.

The 40 or 50 nb pipe is more for look than for extra strength. Because I am doing a tray and rollbar only and not a exo cage etc it will look shit in small diamater on a big truck (just my oppinion before you jump to high ).

I will prolly only give away about 30kg absolute tops in overall weight going the bigger diameter if I can stick to 3.6 wall

[beebee]

The 40 or 50 nb pipe is more for look than for extra strength. Because I am doing a tray and rollbar only and not a exo cage etc it will look shit in small diamater on a big truck (just my oppinion before you jump to high ).

I'll pay that

[fatassgq]

thanks for all the tech. We found that a larger radius wasn't great on the top two 90 deg bends on the cruiser. (maybe cause the cruisers are quite square?) We could definitely do it but.....
It seems that dawn dies/formers are the ones to go for though.

cheers
Brian