sixth wheel on the bonnet

Submitted: Thursday, Jun 08, 2006 at 13:20
ThreadID: 34729 Views:1964 Replies:10 FollowUps:4
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Hi folks,

Just wondering why we don’t see any attachments, braces etc for securing a spare wheel on the bonnet, the way the old Landies have it. I put an old tyre up on my bonnet and it hardly restricted my view.

Seems like an obvious place to keep it, just wondering why its not done anymore.

I am sure a few out there can enlighten me.
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Reply By: Truckster (Vic) - Thursday, Jun 08, 2006 at 13:23

Thursday, Jun 08, 2006 at 13:23
Do you really think a modern bonnet could take the weight?

Also there are ADR's to do with vision and crap to deal with now
AnswerID: 177446

Reply By: Member - Andrew W (SA) - Thursday, Jun 08, 2006 at 13:41

Thursday, Jun 08, 2006 at 13:41
probably because of the plastic surgery it does to your head when it comes through the windscreen.
AnswerID: 177450

Follow Up By: revhead307 - Thursday, Jun 08, 2006 at 13:43

Thursday, Jun 08, 2006 at 13:43
lol

tho...technically its 'rubber' surgery.

Rev
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Reply By: Mazdan - Thursday, Jun 08, 2006 at 14:11

Thursday, Jun 08, 2006 at 14:11
I agree there is no way a modern bonnett could handle the weight......but lets face it, it wasnt made for it.

But I suspect the main reason its not done anymore is the problem of having to lift the damn thing.

To handle the weight the bonnett would need to be made stronger which means more weight and then add the weight of the tyre.

I used to own an early model landy and I can assure you that it was a bugger to lift it all up.
AnswerID: 177454

Reply By: Battlecat - Thursday, Jun 08, 2006 at 14:24

Thursday, Jun 08, 2006 at 14:24
Hi buddy,

One thought is that if a tissue box weighs 200g and in an accident at 80kmh it would weigh 2kg then a tyre would = big problems for you or the person that you hit. Heaps of stories about mining hats, dictionaries and wheel locks inside the vehicle becoming deadly in an accident and the same would apply for items that would be hard to secure if that amount of force was applied.
CU
AnswerID: 177457

Follow Up By: greydemon - Thursday, Jun 08, 2006 at 15:17

Thursday, Jun 08, 2006 at 15:17
Hi Battlecat,
The difference here is that those items are inside the vehicle and not secured. A spare wheel on the bonnet would be outside the vehicle and secured.

A mining hat on a back shelf would indeed fly forward in a head on accident due to deceleration of the vehicle, a wheel on the bonnet would only cause problems if the vehicle suddenly accelerated hard enough to rip it free of the mount sending it through the windscreen (very unlikely). Yes, in an accident it could conceivably cause a problem by ripping lose and flying forward, but then the vehicle you have hit has just had a 4x4 up it's clacker at speed so a spare wheel is the least of their worries!

N.
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FollowupID: 433552

Reply By: robak (QLD) - Thursday, Jun 08, 2006 at 14:28

Thursday, Jun 08, 2006 at 14:28
Also has to do with crashing into pedestrians as for bonnet scoops

see page 9 - herehttp://www.transport.qld.gov.au/qt/LTASinfo.nsf/ReferenceLookup/Modification_Jan05v2.pdf/$file/Modification_Jan05v2.pdf

AnswerID: 177458

Follow Up By: robak (QLD) - Thursday, Jun 08, 2006 at 14:29

Thursday, Jun 08, 2006 at 14:29
try that again

http://www.transport.qld.gov.au/qt/LTASinfo.nsf/ReferenceLookup/Modification_Jan05v2.pdf/$file/Modification_Jan05v2.pdf
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Follow Up By: robak (QLD) - Thursday, Jun 08, 2006 at 14:33

Thursday, Jun 08, 2006 at 14:33
doesn't want to link

"When a 165mm diameter sphere is placed on the
bonnet in front of the scoop (or bonnet projection)
and rolled backwards until it touches the scoop, no
forward point of the scoop or point of contact between
the sphere and the scoop must lie above a horizontal
plane passing through the centre of the sphere."
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FollowupID: 433541

Reply By: Willem - Thursday, Jun 08, 2006 at 15:19

Thursday, Jun 08, 2006 at 15:19
I made up a frame for the 750x16 to sit on the bonnet of my Datto G60. I worked it so that it still complied with the laws of forward vision.

It was however it was a bugger to lift the bonnet and in the end I turfed the experiment. Nothing ventured is nothing gained...lol

These days I tow a trailer and the 6th wheel doubles for truck and trailer and travels on the drawbar.
AnswerID: 177475

Reply By: Rick (S.A.) - Thursday, Jun 08, 2006 at 16:59

Thursday, Jun 08, 2006 at 16:59
Why not mount a 6th wheel on the rear left hand quarter panel?

The mount could be reinforced from the inside.

Surely this is an option? (vehicle would still not be more than 2.4 m / 8 foot wide - less than a big trailer/truck etc.)

I am considering same -

It takes the 6th wheel/tyre off the roof; maybe you'd get occassional scrapes in close scrub, but you'd think not significantly worse than a ladder from the wheel arch to the roof rack would do?

Are there other mounting options apart from a ridiculously priced, prefabricated,rear wheel step/bar/carrier. Let's think outside the square here!
AnswerID: 177487

Reply By: ev700 - Thursday, Jun 08, 2006 at 23:02

Thursday, Jun 08, 2006 at 23:02
Modern consumers are more concerned about sophisticated looks than function.
AnswerID: 177565

Reply By: Wizard1 - Friday, Jun 09, 2006 at 12:31

Friday, Jun 09, 2006 at 12:31
Lets not stop there...we'll replace the roof with canvas, remove the aircon and fit vents...run on directional tyres...and lets not forget the vinyl upholstery and of course a gutless 6 cylinder petrol engine...
AnswerID: 177645

Reply By: Andrew-rodeo - Saturday, Jun 10, 2006 at 19:10

Saturday, Jun 10, 2006 at 19:10
Hey mate!! the reason there is no bonnet mounted spare tyres is the ADR's don't allow it. The idea behind it is if you hit someone there isn't allowed to be objects there that would cause injury! Thats the government for ya!!!!!
AnswerID: 177854

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