Talk Morgan Forums Morgan Sports Cars Classic Morgans (pre-CX) Seat/headrest blanking covers

Cribbed from the Internet for our interest :

1Bolton Automobile and Aerospace Research Group, Department of Engineering and Safety, University of Bolton, Bolton, UK
Abstract

Car-rear-impact-induced cervical spine injuries present a serious burden on society and, in response, seats offering enhanced protection have been introduced. Seats are evaluated for neck protection performance but only at one specific backrest angle, whereas in the real world this varies greatly owing to the variation in occupant physique. Changing the backrest angle modifies the seat geometry and thereby the nature of its interaction with the occupant.

Low-velocity rear-impact tests on a BioRID II anthropomorphic test dummy (ATD) have shown that changes in backrest angle have a significant proportionate effect on dummy kinematics. A close correlation was found between changes in backrest angle and the responses of neck injury predictors such as lower neck loading and lower neck shear but not for the neck injury criterion NICmax. Torso ramping was evident, however, with negligible effect in low-velocity impacts.

The backrest angle ranged from 20° to 30° whereas the BioRID II spine was adapted to a range from 20° to 26.5°. Nevertheless, in general, instrumentation outputs correlated well, indicating that this ATD could be used for evaluating seats over a 20-30° range rather than solely at 25° as required by current approval test specifications.

... I must admit, that I didn't really get the message, Frank sorry...

Seems pretty simple to me- but I speak as a lawyer not a spinal specialist- any neck support better thasn none; most neck supports unless custom built for the driver are a compromise but will give some support.
I'm not looking to be blase here and I'm sure that people with much nore expertise will add to understnading on this

G

I know this is a little off topic, but it looks like this is such a consideration in the racing community the HANS devices which limit neck movement in a crash scenario look like they will be mandatory form next season onwards.

Hi Frank,
Individual seats were introduced in 1975. Why my 76 has a bench seat I don't know. It doesn't have the air cushions though. I quite like the bench seat, but it is not as comfortable as the Allon White seats in Tinkerbelle. Should the car be rebuilt during my ownership I will consider fitting individual seats, with head restraints.

Cereal, I think HANS will be mandatory pretty soon across all forms of speed motorsport...

Cheers,

Thanks, Gerwyn. A British Morgan 3+4 owner and I have contacted Brian Purves two years ago and had long discussions with him. He wasn't keen to do them in other sizes than for the Austins despite our offer to order at least five sets.

Frank

Graham, it may sound strange but my old 4/4 with the bench seat is the only car in which me and my wife still feel comfortable after driving the whole day. The worst seats I encountered were in a 1973 +8. I sat literally on the frame despite being a bit underwight for my 5 ft 10.

Greetings Frank

Just being a SmartAss, Ivo, Just a SmartAss'

Hi Frank,
I've had the same problem with other components. Only recently, I wanted to order a set of silicone hoses and the first couple of suppliers I talked to just werent happy to get involved. One said that a minimum order of twenty was needed because of tool costs etc. Happlily, the second guy I contacted was happyto make a 'one off'

I can only guess that wth a small outfit they want to play safe rather than get involved with any kind of cash flow/ stock on their hands, issues?

Regards.
G

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