What Bolts Do I Need For The Omp Cage?

[Jrod 7]

What bolts do you need to bolt the omp cage onto the feet?

 

Are they supposed to come with the bolts because mine didn't...

[bren_1.3 1]

the bigger the better IMO. M12. minimum steel grade of 8.8

[Kev-G 1]

What bolts do you need to bolt the omp cage onto the feet?

 

Are they supposed to come with the bolts because mine didn't...

 

M10 IIRC - Cap/Allen head are better

 

They don't come with the cages.

[Jrod 7]

Ok, do they need to be a special type to pass scrutineering?

[Craigb 2]

1.2.2. Mounting of Rollcages to the Bodyshell.

Minimum mountings are:

1 for each leg of the main or lateral rollbar.

1 for each leg of the front rollbar.

1 for each backstay [see 1.2.3].

Each mounting foot of the front, main and lateral

rollbars must include a reinforcement plate of a

material of at least the same thickness as the wall of

the tube to which it is being welded (minimum 3mm).

Each mounting foot must be attached by at least three

bolts, minimum M8 150 grade 8.8, on a steel

reinforcement plate at least 3mm thick and of at least

120cm2 area which is welded to the bodyshell (see

drawings Q13 to Q18). The mounting feet may

alternatively be welded direct to the reinforcement

plate. This does not apply to backstays [see 1.2.3].

 

1.2.3. Backstays. These are compulsory and must be

attached near the roofline and near the top outer bends

of the main rollbar on both sides of the car. They must

make an angle of at least 30° with the vertical, must run

rearwards and be straight and as close as possible to

the interior side panels of the bodyshell. Their materials

specification, diameter and thickness must be as

defined in 1.3.

Their mountings must be reinforced by plates. Each

backstay should be secured by bolts having a

cumulative section area at least two thirds of that

recommended for each rollbar leg mounting in 1.2.2

above, and with identical reinforcement plates of at

least 60cm2 area (see drawing Q19).

A single bolt in double shear is permitted, providing it is

of adequate section and strength (see drawing Q20)

and provided that a bush is welded into the backstay.

The mounting feet may alternatively be welded direct to

the reinforcement plate.

[dommorton 0]

Got a box of Cap Allen Bolts from Screwfix for peanuts to do mine

[Sam 4]

www.namrick.co.uk do nice stainless bolts