Triangulating rollcage to front turrets

yes its "ok"

Ok been playing with some rulers and think Paul's idea looks simpler! Will miss the bonnet hinges and you can use straight pieces of tube without trying to bend it around to meet the turret properly.

http://iainel.co.uk/images/forums/Ca...ngulation1.JPG

So can do as Paul is planning, 3mm plate and weld a horizontal to that + a profiled end to the front hoop.

Then for the diagonal, the foot does actually look better as there won't be much gap between the 2 bars with the height of my doorbar:

http://iainel.co.uk/images/forums/Ca...ngulation2.JPG

Shame I've got a crappy dash dodger SD cage, would be much neater with one that hugs the A pillars properly!

ahhh i took my bars out higher, i went through the hole that is already there which is why it would have got in the way of the hinge. if you think it wont going lower then all good :D

Can't be 100% sure but one way to find out lol That red mark would be the hole for the next-to-turret idea, but it'd be similar height for the pictured way I think.

Interesting reading so far :thumb:

You may have already seen mine, if not here they are:

http://i248.photobucket.com/albums/g...emounts033.jpg

http://i248.photobucket.com/albums/g...emounts038.jpg

http://i248.photobucket.com/albums/g...emounts019.jpg

http://i248.photobucket.com/albums/g...emounts020.jpg

http://i248.photobucket.com/albums/g...emounts021.jpg

http://i248.photobucket.com/albums/g...emounts037.jpg

I will say however i only mounted mine in this way as to suit the cages construction, if i had started from scratch i would have gone for a side mounting for ease if nothing else.

Quote:

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Originally Posted by Paul

I will not be welding it alongside the turret, as I can see no benfeit in that. I know the Grp A cars were done like that, and whoever wrote/desgined it knows more than me, but no-one can explain why alongside and not at the back?

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Any forces on the top of the turret will be while cornering, acceleration and braking has little effect on the top of the turret (The reason why is slightly more complex than this next bit but I can try and explain it in a PM or something if you like, it's pretty difficult without drawing it out as you watch or something though) What this means is all of your forces are acting upwards (weight transfer) or to the side, now if you think what would happen if the turret totally gave way, and there was no shell etc to catch the bits, the shock would be flung outwards because the force from the tyres is pointing towards the centre of the car and they pivot around the ball joint, so welding a piece in line with the forces wedged against another panel, works better than something at the back X distance from the line of forces where it creates a moment about the mounting point.

This is purely my educated perception of what is going on, and not coming from the design principles of a group A rally car.

I like to look of Wills TBH. Iainel, they way you show, will the horizontal bar not catch on the bonnet hinge when closed? Of course you could remove this issue by fitting catches!!

Not sure, I think it'll clear though - can't say for sure until the holes are drilled and the bars in place! It's tight either side, but looks harder to do it down the outside as the pipe would need bending to shape to clear the hinge.

I wonder what diameter toilet roll centres are.. I feel a mock-up coming on lol

Quote:

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Originally Posted by iainel

I wonder what diameter toilet roll centres are.. I feel a mock-up coming on lol

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About the same diameter as my rear brace, I.e the bigger size of CDS merlin motorsport do whatever that is lol probably a bit big :p