Truenotch wrote:They're still not legal under MSNZ rules for National level - the manual states fixed back AFAIK.
Still fine for clubsport.
This one gets a bit complicated, but in essence you can actually use a reclining seat provided that it can be proven that the seat complies with an internationally recognised safety standard. Something that pretty much all modern factory seats will have (eg: recaro's and stuff out of Evos etc), but not something you can be assured of with replacement after market seats you'd buy from Repco / Supercheap / Trademe. Off the top of my head I *think* the Monza reclining seats comply with an Australian standard.
However, that said, I still wouldn't use them. The need for fixed back FIA standard seats is only at moderately high levels of championship competitions, or in a caged car that is road legal and you have removed the airbags.
There is a lot of complication in the seat rules for Motorsport. But in a nutshell, the original poster here can use basically any seat that is going to work with the harness' he wishes to run.
However, for my 2c worth, considering how many of the crashes resulting in easily avoided injuries (typically spinal) can be pointed at poor race seat quality or poor mountings ... I'd be looking around for a reputable brand race seat (Momo, Racetech, Sparco) in good used condition.
So the difference between a regulation (what you can use) and a recomendation (what I'd suggest).
4.5 Seating: Occupant seats are defined by type as an original seat, or replacement seat, or
competition seat. The following requirements apply:
(1) All occupant seats shall:
(a) Be securely attached to the vehicle chassis or bodyshell, and
(b) Adequately support the occupant(s) in competition use.
(c) Have attachments to the chassis or bodyshell that comply with the following:
(i) Seat mounting plates shall have a minimum thickness of 3mm for steel or
5mm for aluminium, and
(ii) The seat sub frame/mounting plates shall be attached to the bodyshell at a
minimum of 4 locations as close to their corner points as possible, using:
· The vehicle manufacturer’s original seat anchorage points, and/or
· Fabricated anchorage points consisting of bolts, at least M8 mm/ISO
8.8, and steel reinforcement plates that:
– Are at least 2mm thick,
– Have an area of not less than 40cm2 (64 x 64mm),
– Follow the contours of the floor, and
– Have radiused corners and chamfered edges.
Schedule A
MSNZ Manual 34 Online Edition - 19 -
App 2.02 Sch A 2010.doc
Latest Amendment: 34078 6 May 2011
Note: The reinforcement plates should be different sizes. (Refer drawing
4.5.2)
(d) Adjustable seat rails (runners) may be used on the proviso that a locking method
is operable on both rails.
Application – Replacement and Competition seats, albeit a dual locking
mechanism is highly recommended for Original seats.
(2) Replacement seats: All replacement seats shall:
(a) Comply with the requirements of article (1) above, and
(b) Incorporate a head restraint, and
(c) Have no provision for mechanical adjustment of the rake of the seat back rest,
except where it can be proven that the seat complies with an internationally
recognised safety standard.
Note: Head restraints are mandatory on all replacement seats when used in conjunction
with a safety harness. They are strongly recommended for all vehicles.
(3) Competition seats: All competition seats shall comply with the requirements of articles
(1) and (2) above excepting that no provision for mechanical adjustment of the rake is
permitted.
if you want to know the definitions of seats in MSNZ
http://www.motorsport.org.nz/assets/Mot ... A-2010.pdf
page 19