Is this cage legal

Author
Discussion

smiles1

Original Poster:

543 posts

222 months

Friday 7th July 2017
quotequote all
Could anyone tell me if the front legs of this cage are MSA legal or would it fail scrutineering due to the bend?

Thanks

s-l1600123456 by Miles Hodgson, on Flickr

RyanTank

2,850 posts

154 months

Friday 7th July 2017
quotequote all
I'd be leaning towards a fail, that bend should cause the cage to collapse in a roll over as it has no reinforcement. pretty sure my club failed a car on an event for a cage with bends in

thebraketester

14,224 posts

138 months

Friday 7th July 2017
quotequote all
Those should be welded into the cross member. In an accident they would probably do more harm than good.

Also there appears to be no triangulation or braces either.

tapkaJohnD

1,941 posts

204 months

Friday 7th July 2017
quotequote all
I agree, but best bet is to ask a scrutineer.
A junior scrute queried mine - tubes too narrow (car's from '71) but asked the Chief.
Who consulted his enormous experience and memory, allowed me to race, and then referred me to the MSA's Technical Dept.with a specific supplier as his suggestion.
I now have a certificate from the MSA, documenting the type and supplier of my roll cage!
Wasn't cheap, but no junior or officious scrute can fault me now!

Lists of scrutineers in the back of the Blue Book.
John

fat80b

2,269 posts

221 months

Saturday 8th July 2017
quotequote all
From the MSA BB 2017: Section 1.3.1

Main, Front and Lateral Rollbars. These frames
or hoops must be made in one piece without joints.
Their construction must be smooth and even, without
ripples or cracks. The vertical part of the main rollbar
must be as straight as possible and as close as
possible to the interior contour of the bodyshell. The
front leg of the front rollbar or a lateral rollbar must be
straight, or if it is not possible, must follow the
windscreen pillars and have only one bend unless a
windscreen pillar reinforcement [1.3.5(e)] is fitted.


I would say the pic falls foul of the one bend rule.
I'm going to say that's not proper foam either (although not technically a fail I believe but can be pulled up by the officious scrutineers).

As above, the best thing is to contact a scrutineer from the back of the BB and see what they say.
Bob

Loving the carbon fiber addition to the cage - I might do that smile

Edited by fat80b on Saturday 8th July 07:28

Jerry Can

4,454 posts

223 months

Saturday 8th July 2017
quotequote all
what engine size is your car. If sub 2.0 then there is no mandatory requirement for a front section to your roll cage - it is recommended only. therefore what you have is legal as it is not required.

However you will need to make sure that the footings for it are boxed and welded properly - I can't tell from that picture.

blue book p160,

1.6.1 production cars, touring cars, sports cars upto 2000cc - basic roll bar/cage complying with K1 or K2. See page 179, drawing 1 and 2.

Edited by Jerry Can on Saturday 8th July 08:28

df76

3,630 posts

278 months

Saturday 8th July 2017
quotequote all
Jerry Can said:
what engine size is your car. If sub 2.0 then there is no mandatory requirement for a front section to your roll cage - it is recommended only. therefore what you have is legal as it is not required.

However you will need to make sure that the footings for it are boxed and welded properly - I can't tell from that picture.

blue book p160,

1.6.1 production cars, touring cars, sports cars upto 2000cc - basic roll bar/cage complying with K1 or K2. See page 179, drawing 1 and 2.

Edited by Jerry Can on Saturday 8th July 08:28
But be careful, some series (like Combe Saloons) mandate a full cage compiling with the MSA regs..

tapkaJohnD

1,941 posts

204 months

Saturday 8th July 2017
quotequote all
PS That soft foam cladding (!) for the cage _IS_ illegal, if the events you enter require FIA homologated padding.

FIA 'padding' is hard, but impact absorbent, shiney surface, http://www.demon-tweeks.co.uk/Product.do?method=vi...

JOhn

stevieturbo

17,262 posts

247 months

Saturday 8th July 2017
quotequote all
Those cages are usually dodgy as fk...but you need to know what rules you actually fall under. MSA covers a hell of a lot, and few easy to understand.

Exactly what type of racing or classes is the car used for ?

Willhire89

1,328 posts

205 months

Sunday 9th July 2017
quotequote all
I think if the leg went straight to the bend above the dash it would be legal - the second bend rules it out.

I understand why the lower leg would be bent here and there to allow the original dash not to be cut but the upper bend must be close to 90 degrees and cannot surely be very robust.

To me it just does not look like it would do the job

Weslake-Monza

461 posts

183 months

Sunday 9th July 2017
quotequote all
The whole think about the cage regs is that they are for self-built. If the cage has a certificate then it's ok.

stevieturbo

17,262 posts

247 months

Monday 10th July 2017
quotequote all
Weslake-Monza said:
The whole think about the cage regs is that they are for self-built. If the cage has a certificate then it's ok.
I doubt a dash dodger cage would ever have a certificate for anything.

smiles1

Original Poster:

543 posts

222 months

Monday 10th July 2017
quotequote all
Thanks chaps, it's not my car but was looking at it (and seen a few with similar front vertical bars) and wasn't sure where MSA would draw the line.

Weslake-Monza

461 posts

183 months

Thursday 20th July 2017
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Then your doubts would be misplaced.