I was about to draw a line under this discussion when the correct replacement stay arrived. For the record it weighs 53 gm (one and seven eighths ounces). Hardly a critical area to look for weight saving then! So the reason to leave one stay off must be cost saving alone.
But what has simply stunned me is that the stay rod isn't extruded metal like all the ones that caravan oracle and others say have worked perfectly well for ages are "tried and tested" etc etc but is plastic for heaven's sake! Now I AM beginning to understand why such a small window which should have lower forces on it broke free when others much bigger that folk have seen flapping didn't. All the umbulla claimed about past history is thus even further discredited as that's 5 Major differences now from the norm:
- leading edge unsupported/unstayed into any turbulence (totally avoidable at no cost penalty - see below)
- mounting position near hinge, not at edge of window so wind lever effect actually pushes hinge DOWN towards the point where it CAN come free instead of holding it in a place so it it can't
- stay rod plastic not metal. Just crazy
- no clamp to frame on stay, and critically
- only the single stay which permits twisting where two don't
Any one of these I would see as poor design but in combination I think this is highly suspect to fulfill the failsafe case.
What's more the part description is .."Right Hand, 140mm stay, PACK Perma-fix end, POLFIX c/w fittings. So why the hell didn't Bailey get a LEFT Hand one and fit it to the leading edge if they must have just one? No weight penalty, no cost penalty,no more work for anyone, just the correct end and detachment much less likely!
And all this is with 50% less latches.
Perhaps the other armchair experts who know its all safe ("this window issue is simply NOT a problem design, safety or otherwise" would care to suggest at what point (size/shape etc) its acceptable to move to a single plastic stay and why. I repeat: this is the smallest and thus supposedly the least vulnerable to risk of detachment. But it did. Please explain why?
I have been thinking too about the checking of latches which people rightly say is a vital safety task. One I always try to follow despite the assumptions of the perfect few. The window didn't come loose until I'd travelled over 2hrs/100 miles that day after an overnight stop and I am almost certain that we opened or closed no windows in our brief stay, which means two days travel of 200 miles+ and two checks which failed to spot an unlatched or incorrectly latched window before it opens. Very strange. Could it be the latches WERE down but in the secondary position and it vibrated open? I can't see how that's possible as the motion is stiffened as it should be by a friction washer.
As for those who think I'm a chump for not stopping right away, THEY maybe haven't had to stop in similar circumstances on the continent, if they've travelled there at all. I have, as said earlier, and it was terrifyingly dangerous. Your door is on the offside (traffic side) for starters unlike the UK and big vehicles make no deviation.
Perhaps they should listen to the advice of those actually qualified in preference to their own self opiniated diatribe ( see http://www.rac.co.uk/know-how/accidents-incidents/breakdown/hard-shoulder-accidents-incidents.htm)
"You are the best person to decide what is safest for you, but it is recommended that:
You don't attempt to repair your vehicle on a hard shoulder. It is highly dangerous, particularly on the side nearest the traffic. Use a motorway telephone to get professional help.
and also
http://www.motoraccidentclaims.co.uk/news-content.cfm/Article/82231/Highways-Agency-Traffic-Officers-Remind.html
Last year, on England's motorways, there were 12 fatal hard shoulder accidents and 28 serious accidents. These are accidents where at least one vehicle involved was entering or leaving the hard shoulder.
As a result of these accidents, 15 people died and 42 were seriously injured.
Jo Ashton-Gray, Operations Manager for the Highways Agency said:
"Motorway hard shoulders are for emergency use only, and you should only stop if there is a real emergency and you have no other choice.
"Motorists have a key role to play in reducing death and injury, both to themselves and to those who attend in any kind of emergency on motorways. If you can, try to drive to safer place off the motorway instead."
Which is precisely what I did at reduced speed and for a very short distance. You all say windows coming out is as scarce as rocking horse poo, just as I thought, so risk was minimal. It's extremely easy to be wise after the event but it still seems to me on the balance of probabilities that my choice was the safest and since the design is apparently without flaws there should be no further risk.
It is now my intention to fit the stay and measure the geometry to see in practice just how easy it is in the static situation to detach the acrylic hinge extrusion and what pressure is necessary to overcome the stay effect. I will report back.