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BluebirdBill

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Viewing 15 posts - 1 through 15 (of 169 total)
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  • in reply to: Donald Campbell's Bluebird K7 #785947
    BluebirdBill
    Participant

    Hi all,

    Thanks for all the positive comments – that was a hell of a fortnight. I’ve put a bit of a statement on the BBP forum if anyone wants a glimpse at the underlying politics. I don’t think there’s any surprises in there.

    in reply to: Donald Campbell's Bluebird K7 #794111
    BluebirdBill
    Participant

    just in case anyone has missed the run up to our crew training on Bute we’re putting out info by the hour on our Twitter feed.

    https://twitter.com/bluebirdk7

    https://twitter.com/bluebirdk7/status/1022752294973202432

    in reply to: Donald Campbell's Bluebird K7 #796663
    BluebirdBill
    Participant

    There’s a massive amount of work gone into ensuring we have more than enough strength. The frame was x-rayed end to end before repairs began, we’ve doubled up where necessary, used heat treatments, modern day surface protection, sealants and rivets. We’ve stiffened, pinned and sleeved – the list is endless. Not worried about that at all.

    in reply to: Donald Campbell's Bluebird K7 #774390
    BluebirdBill
    Participant

    [ATTACH=CONFIG]261259[/ATTACH]

    Looking very like herself now…

    in reply to: Ageing Gas Turbs the latest #796633
    BluebirdBill
    Participant

    Problem with the elastomers in those old control systems is that they’re everywhere. Every last unit is full of them, there’s no real way to assess their condition from the outside and a failure of any one of them could have serious consequences. There’s been several strip inspections of legacy fuel control units over the years that have revealed deteriorating elastomers and one failure where a diaphragm was partly submerged in old fuel for many years leaving the dry half air damaged. Much as I hate to see old machines consigned to never run again it really is about time these things are pulled down and properly overhauled if they’re to keep on running.

    in reply to: Donald Campbell's Bluebird K7 #830523
    BluebirdBill
    Participant

    ‘Come back soon BBill – don’t worry about W43 – she has consistently proved to have absolutely zero sense of humour LOL.’

    She? Now why didn’t I see that coming?

    We’ve taken the diary down for a few days, not because foxes are horrid but because I rushed the last part and wasn’t happy with it so now I have an excuse to restore it in a day or three with some extra info and more pic’s. I’ll pop in a few cutesy kittens at the start and update the badger stew recipe because, apparently you have to skin and gut them then nail them down in a flowing stream for 48 hours to degrease the corpse before cooking – someone flagged this on the BBP forum though I’ve not had time to look into it properly.
    I’ll also strip the indoctrinated bint of her designer heels (how stupid do you have to be to believe that I write this crap to inspire the wives and kids?) and put her in a penguin-print onesie so the macrobiotic vegans out there can scoff down their curly kale without getting indigestion.
    Then, having reworked the three paragraphs out of 8,500 words that put the humourless-society on its collective high-horse, I’ll sort out some extra interesting stuff and put it back as it should have been first time around without rushing the job.
    Seriously, guys… if anyone has an issue just PM me and I’ll send you my number so we can have a natter over the phone and sort things out. If you don’t then you just gave up the right to whinge.

    Cheers,
    Bill

    PS – never, ever take me seriously unless by prior arrangement.

    in reply to: Donald Campbell's Bluebird K7 #831026
    BluebirdBill
    Participant

    And… Drum roll… I have 0 chickens!! Which means I can’t offer opinion or fact on anything relating to the countryside!

    And therein lies the problem. It would be like me trying to write anything informed about living in inner-city London. Wouldn’t begin to try – not qualified.

    Anyway – that’s enough forum for me, I don’t usually do social media.

    in reply to: Donald Campbell's Bluebird K7 #831045
    BluebirdBill
    Participant

    Ps – as for knowing your subject, Foxes are not evil. They are a wild animal. But they are not ‘evil’. Try harder

    My apologies – maybe the foxes where you live don’t murder everything in sight. It’s just that ours do, unlike the rats that only ask for food and a warm place to sleep. How many chickens do you have?

    Bill

    PS – The reason the rant is at the start is because many years ago I was asked to add something that the wives and kids could read in order to give them a laugh and grab their attention because boat stuff is boring to all but us anoraky blokes. Couldn’t possibly move it to the end…

    in reply to: Donald Campbell's Bluebird K7 #831135
    BluebirdBill
    Participant

    Thing is, one and all – the format is long established.
    There’s a rant then there’s the meat and gravy. It’s been that way for the thick end of 20 years and the great majority love it and tell us so because in the first instance it’s all very tongue in cheek and all but those who take the hook I cast time and again know better than to bite.
    Then there’s the fact that I only rant about things I feel qualified to rant about so my conscience is clear on that score. I keep chickens and turkeys and therefore wage daily war on foxes and rats. Believe it or not, and the guys will tell you this, I actually like my rats in the garden – smart little things they are, and always spotlessly clean – but I still cull them on a regular basis so as not to be overrun. Foxes I kill on sight because they’re evil things and it annoys me endlessly that the bleaters can only bleat about the ones that have to run away from dogs, universally ignorant of the fact that in order to dispose of a whole generation of the things the gamekeepers will gas vixen and cubs in the den. Know your subject, eh.
    Likewise, I was a diver for Greenpeace for many years and risked arrest, strip-searches and imprisonment to do my bit for the planet, not to mention performing some of the most hazardous dives of my career… any other Greenpeace divers out there? I’m sure I’d remember you.

    But that’s all by the by – the purpose of the rant is to raise a smile, never to be taken seriously and to wind up those who can’t appreciate the absurdity of the world around them so if you bit – shame on you and try harder next time.
    In the meantime we’re all working damned hard to build a boat over here and showing you the whole lot – warts and all, so if you really zoned out before the boat bit – and I don’t believe for one living second that that’s what any of you really did – then get back there and see what you’re missing… silly people!

    Cheers,
    Bill

    in reply to: Donald Campbell's Bluebird K7 #840715
    BluebirdBill
    Participant

    Bill
    Generally speaking it is not good practice to get used to standing so close to jet intakes ( or accepting it as standard practice) without safety guards in place – it has all happened before ; )

    Perhaps a gopro and intercom would be an alternative ?

    Agree entirely and we’re no cleverer than the last person to have his bunch of keys or whatever else sucked into a GT
    But, that said, we were operating at low power settings (max 65%) where we do have a lot of experience of being in that sort of proximity to the intakes when washing the compressor and that sort of thing so we know what it will and won’t do. You may also have noticed that I kept hard against the headrest for the most part whilst wearing my famous ‘searching hat’ which has a long tail that went around the straps on my ear-defenders then was shoved firmly down my back so neither was going anywhere no matter how hard the engine sucked. It isn’t actually that windy at 65%.
    We plan to put the engine back on the test rig next because it’s still not properly set up to accelerate as we want it for use in the boat or to handle the higher LP boost pressure that the complete fuel system delivers and by the time we’ve done all that the boat will have a canopy and proper comm’s so Saturday’s runs won’t be repeated.

    in reply to: Donald Campbell's Bluebird K7 #840722
    BluebirdBill
    Participant

    Indeed it would but we’ve run the engine over 300 times and know exactly what goes on at that end so there was no danger of either my hat or ears going down the spout. We did, however, almost lose a strip of rubber from the cockpit rail down there. That too would have done the compressor no good at all.

    BluebirdBill
    Participant

    Thanks for the replies. Yes complex indeed, and I hadnt realised that the same components would of been used in RR, DH and Siddeley (as in Armstrong) designed engines.
    My question really stemmed from the fact that to the best of my knowledge no specific fuel flow / regulation problems have shown themselves in the Derwent and Goblin engines of Meteors and Vampires operated for many successful years, both in aviation industry and Airshow participants alike – at least not to an extent that any problems have been publicly reported in the same way as the Avon (why would they I suppose one may ask). And my initial reaction was that it was unfair to lump all of these together for attention rather than sticking to the one giving the most cause for concern.

    As ever I’m always happy to be educated!

    Rob

    The problem is, that regardless of who designed the engine, they all went to the same suppliers for fuel control equipment, which is why you will find Lucas or Dowty hardware bolted on there in many cases. The pump that fuels a Gnat is essentially the same as the one fuelling Concorde, only the size differs so they are all full of the same technology and subject to the same problems. To the best of my knowledge many of the pumps are still supported and I know that on the Orph’ at least some of the smaller fuel control modules don’t contain the suspect elastomers but the main fuel control unit does so getting one of those brought back to life would be a real show-stopper. It’s a real shame but a decision that’d very difficult to argue with.

    BluebirdBill
    Participant

    Cannot argue with that Bill, I would suspect the OEM had little issue with your fuel system as your intentions are not for airworthiness use (Bluebird having failed on that score twice before). Worth considering inhibiting your system properly mind after the test runs.

    As it happens ours was an all or nothing deal. Our fuel system was treated from beginning to end as though it was being returned to flight with no compromises – how would you decide where to compromise? It’s anathema to the aerospace mindset with good reason. We also have a LP boost pump with certificates of release, not that we’d do anything other than put it back where it came from, but it could fly and we were told during its rebuild that its internals were in better condition than many similar pumps that were flying.
    The capability certainly exists to keep these things going, though the people with the ingrained expertise are thinning fast due to retirement and redundancy but to go as a commercial customer with your Cold War jet and its fuel system and as to have it brought up to date would be pretty much impossible in today’s climate, I think.

    On the subject of inhibiting the system when not in use, we have the proper juice in a bottle for that very purpose and part of the agreement when handing all of this over to the people of Coniston in perpetuity is that we have to wheel her out once a year to run up the engine, hydraulics, pneumatics, electrics and every other thing that moves. I know it’s not possible to run the perfect project but we’re trying hard.

    BluebirdBill
    Participant

    Alas, the CAA has a valid point here. A few years ago a vintage jet was brought down by a failed elastomer in the fuel control system. It had been stored half filled with fuel leaving a ‘tide mark’ across a diaphragm, which in this case was basically rubber coated canvass. The air above the fuel level had dried out the elastomer causing it to fail in flight. This was only discovered during the subsequent strip inspection.
    They let it go that time but if the Shoreham aircraft has been found to have deteriorated elastomers they really can’t let it go again. These are moving parts that flex and bend to send vital pressure references around a hydro-mechanical computer and they have to work properly yet they aren’t lifed in the normal way.
    I am intimately acquainted with these systems from our work on Bluebird’s original fuel system that was totally overhauled by the OEM as a gesture of support and goodwill and all our elastomers were re-manufactured, which may be why the Orph’ is not on the list of suspect engines (I must stress that I have no knowledge of this if it’s the case and this is absolutely 100% speculation on my part)
    But, what I can say with reasonable confidence, is that these elastomers have hidden away unnoticed and un-cared-for in many legacy engines for long enough that they need looking at.
    Nor is it just a case of buying a seal kit and rebuilding your fuel control modules. As an example, another problem we faced was that the design called for asbestos gaskets so an amount of engineering work had to go into specifying new materials. Then there were things like special, no longer produced tab-washers and all the unique tooling for setting up the units before they were rig-tested and finally signed off.
    It can be done, and we also know that properly inhibited and stored components can be brand new after half a century on the shelf but bringing this all together safely and cost effectively to maintain flyable vintage jets is going to be challenging to say the least. Let’s hope there’s enough empathy between the CAA, operators and OEMs to maintain some middle ground for now.

    Bill Smith.

    in reply to: Donald Campbell's Bluebird K7 #847045
    BluebirdBill
    Participant

    At almost71 with poor health my restoring days are behind me. I did however spend many years resurrecting mainly Austin Healey 3000’s and Jaguars when the marques were not appreciated unlike today. I also spent my time rescuing unwanted cats and re-homing them and usually having about six members of them as family cats. The above kept me somewhat sane as I fought what is now called PTSD from my time in Northern Ireland so I never knock a person who obviously cared greatly for his late dog or any pet and had thoughts like that. I do four months on from the loss of my last cat and my wife feels the same.
    I will end by saying that many millions of people get their only comfort from their pet dog or cat as it is their friend,confident and probably the only living thing they will see that day.

    Hey, Paul, you really shouldn’t take the BBP diary so much to heart. After all, the format is really designed to deliver what might otherwise be a terribly dreary subject in a more tongue in cheek way.
    And, for the record, I love my dogs as much as the next bloke and they are as much a part of our family as the children. The problem is that we can’t have it both ways. We humanise them when we shouldn’t, the result being that we keep them going long after nature would have culled them until the day comes when we must take our best mate to the vets and do them the ultimate act of kindness. Having done that many times I can’t recall a single animal that would have wanted me to waste a second grieving when I could get a new pup and crack on. This is just my experience of keeping animals and if it differs from yours then please do as my good friends do and invite me to commit an act ending with the word ‘off’.

    And sincere thanks to everyone for their comments, good or bad, and for all the encouragement. We are all working damned hard over here these days to get the big tin boat ready. Sorry that we can’t give a ‘when’ but the simple truth is that we’ve not done one of these before but if we don’t give up we can’t fail. Stay with us and we’ll see you all in the beer tent in Coniston someday soon.

    Bill Smith.

Viewing 15 posts - 1 through 15 (of 169 total)