alistairolsen
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| posted on 6/10/10 at 12:43 PM |
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Can somone check my cage layout? Matt?
I've been thinking about how best to lay out my cage for a while now. The rear roll bar, diagonal and stays are pretty much a given on the
locost so it was the front half and roof that came in for scrutiny.
I had considered the external layout and bolting it on so i could remove it for access if required but I also want to vent the side panels at the
engine bay bulkhead and didnt like the look of some of the bases of cages, not least the ones with a bend at the bottom which aren't MSA
compliant. This one doesnt have the bend at least, but obscures the venting:
Heres mine:
This is just a first shot, I tried tying the front legs into the chassis, having the front frame about where the screen would normally go (I think Ive
gone one step too far forward in my diagram)
Things Id like to know:
Is the basic layout MSA compliant if made from the appropriate material and welded by a good welding contractor?
Will having the tube inside the chassis annoy my knees forever more? I see the procomp cage is welded to plates mounted on top of the standard chassis
bars?
Does the X bar in the roof (rather than two rails along the car and a single diagonal) make getting in and out significantly easier? more importantly
is it still safe?
Cheers
PS, a second take:
An alternative option for the lower mounting, but I don't like the single bolt fixing
Any comments of advice would be great as obviously if I'm going to tie in the front tube as Ive shown it needs done asap, otherwise I need to
fit some fairly hefty mounting plates to which i can bolt or weld the cage at a later date.
[Edited on 6/10/10 by alistairolsen]
My Build Thread
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loggyboy
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| posted on 6/10/10 at 01:39 PM |
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I doubt the X shape roof bars will comply. They need to be as per diagram 53, page 191 in this dococument
http://msauk.org/uploadedfiles/msa_forms/bluebooks/10/160-195%20Competitor%20Safety.pdf
which shows 2 connecting bars, in line, either straight or with a bend/kink in them. You can have an optional cross/digaonal bar between them, but you
must have the 2 outer connecting bars.
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alistairolsen
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| posted on 6/10/10 at 02:04 PM |
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I did wonder, I didnt like the look of them, but it's as ever a trade off between living with the cage everyday, and wanting it right the one
time you have to rely on it.
My Build Thread
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loggyboy
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| posted on 6/10/10 at 02:09 PM |
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Thats why im going for the arched style bars that are slightly towards the centre, that should allow comfortable access and 'i beleive'
will still comply (should I ever need them to)
[Edited on 6/10/10 by loggyboy]
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loggyboy
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| posted on 6/10/10 at 02:33 PM |
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I havent looked at the MSA implications, but i do recall seeing diagrams showing bolt on connections, you could do a single bar down the midde for
road use, then bolt on the side braces when using for competion.
Diagrams 21-29 and 52 seem to show approved bolt in connections
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alistairolsen
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| posted on 6/10/10 at 03:02 PM |
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That might be an option. I seem to remember matt saying the raised bars like in your diagram (which is the MK cage I think?) arent legal 
My Build Thread
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franky
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| posted on 6/10/10 at 03:03 PM |
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Just to let you know its my car in the first pic and the cage doesn't affect the vented panels at all, otherwise I wouldn't have bothered
venting them 
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MK9R
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| posted on 6/10/10 at 03:26 PM |
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quote:
Originally posted by alistairolsen
That might be an option. I seem to remember matt saying the raised bars like in your diagram (which is the MK cage I think?) arent legal
Its the bend angles in the tube IIRCC, isn't the maximum 15 degrees. Don't quote me on this, just a vague memory
Cheers Austen
RGB car number 9
www.austengreenway.co.uk
www.automatedtechnologygroup.co.uk
www.trackace.co.uk
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loggyboy
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| posted on 6/10/10 at 03:44 PM |
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quote:
Originally posted by alistairolsen
That might be an option. I seem to remember matt saying the raised bars like in your diagram (which is the MK cage I think?) arent legal
Yeah he did state that MK bars had been deemed illegal, but its my firm belief this is due to the double kink in the front bars, and nothing to do
with the conecting bars. Im sure Matt would disagree, and he has already stated his point that he beleives the diagrams to be definitive point and
that cages should look just like them. However my view (and i'll willingly agree its from someone who has never had to put a car/cage through
MSA/FIA scrutineering) is that drawing 53 (that i mentioned earlier) clearly states 'Connecting bars may be bent or straight'. It doesnt
say anything about 'can only be bent a little bit'
I cannot see any guidelines on what angles are allowed.
[Edited on 6/10/10 by loggyboy]
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loggyboy
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| posted on 6/10/10 at 03:53 PM |
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On a further note regarding comparisons to Procomps cages, these are tested and approved, so using these as any form of base is pointless, unless of
course that part of design is also shown in the Blue book. Use nothing but the blue book for guidance and you should get it right.
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hicost blade
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| posted on 6/10/10 at 05:14 PM |
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I would ignore the Caged mounting system as its rubbish (I know this because I have one and had to get Pro Comp to modify my chassis to fit it
correctly)
I would drag the car down to Pro Comp and let them do their thing, for the sake of a few hundred ££'s it’s not worth 'trying' to do
it yourself
This is not my opinion, this is from my experience BTW
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Werner Van Loock
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| posted on 6/10/10 at 05:57 PM |
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This is how my cage is now, custom made in holland, don't know how this complies to msa or not, but gives some thought
 
striker cage 1
 
striker cage 2
 
striker cage 3
http://www.clubstylus.be
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scootz
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| posted on 6/10/10 at 06:45 PM |
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Don't know about how useful it will be in a rollover Werner (hope you don't ever test it)... but that looks 
It's Evolution Baby!
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Werner Van Loock
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| posted on 8/10/10 at 08:30 PM |
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thanks, i'm really pleased with it and no i'm not going to test it, though it's build to standard raw spec, they all are like this.
http://www.clubstylus.be
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