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Barry,Can I venture the requirement of this site to have a main and permanent page which advises anyone what they should NOT do when building a machine.I think it would be required in the interests of safety, so no one builds on prior mistakes made; eg,Do not machine hub bars to reduce their thickness - it promotes metal fatigueDo not score the internal walls of structural sections by drilling through the section - it promotes metal fatigueDo not use stainless steel sheet in fatigue critical locationsDo not machine sections in fatigue critical locations - it promotes metal fatigueDo not use single shear connections on control rod assemblies - it promotes metal fatigueDo not use commercial grade bolts in bolted connections - they are not adequate for use in aircraft applicationsDo not omit crush tubes from centre bolted hollow sectionsDo not leave ragged cuts or machining - it promotes metal fatigueDo not cover control cables in shrink wrap or tubing - it prevents inspectionDo not cover swages in shrink wrap - it prevents inspectionDo not use incorrect tooling during construction - the strength of the aircraft is dependent on correct tooling being usedDo not use other than Nicopress Swages on control cabling - other methods are mores susceptible to failure.Do not use a pre rotator on a hub bar where the teeter block bolts fall in the leading edge (tensile) section of the hub bar - it causes hub bar failureand so on, any one else feel free to add to this list.If we can compile a list of 'do nots' for everyone to read there is a good chance of removing a fault in the construction of a new machine, or one that is being renovated or even one that has been built and contains a latent defect put there by the builders ignorance.Hope this helps.Nick.
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Gee,I forgot...Do not drill the mid section of a mast - it promotes failure in the event of roll over
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Doesnt rollover promote failure of the mast when the machine rols over?
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Do not fly without proper training.Do not say " She'll be right..."Do not try a vertical landing in nil windDo not use cheap guagesDo not post on forum while drinking beer/bundy....seeya (Good idea Nick)X
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Do not fly ANYWHERE near powerlines!Do not fly into cloudDo not use inferior materialsDo not fly without doing a hang test ( on your gyro )Do not be a 'know it all " - ASK X
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And if your real paranoide, DON"T FLY.[
][][]Ignorance is bliss............but only till you realise you were.Ingratitude stinks.......be generous carefully.
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Do not listen to Paul B
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Echo, What is your new Phone Number?Marcus.
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Gentlemen,Most amusing... thank you.Eric, good additions to the DO NOT list, though I had intended to make it a builders list, your comment invites the extension of a general "DO NOT" page, thanks for this.Mark, if I may exptrapolate on yours, "Do not roll your machine over - it promotes mast failure"Some others to considero not put diesel in your petrol gyro - it inhibits the performanceDo not run your rolls royce engine on synthetic oil - it causes the hydraulic lifters to seize and results in engine failureDo not fly after consuming alcohol - it causes nasty accidentsDo not thrust test your machine without back chocks fitted - it prevents the rope from getting caught in the propeller and stuffing everythingDo not allow dogs near aircraft - they get turned into mince, as does the aircraftCheers,Nick.
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Yeah ,I know Nick I strayed from what you had intended but by the time I realised I was on my third Bundy & couldnt be bothered deleting it. Who has tried the new triple filtered Bundy? Mate , smooth isnt the word! hicX
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Marcus, try me on 02 6573 1206 Eric( I would ring you but your number went missing in the last move-thats my excuse & I'm sticking to it)[xx(]
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Cheers Eric, enjoy!@
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Don't fly when you are ill, tired or cranky or you might have lots of time later to reflect when you are re-building.Pete
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Pete,Sounds like you know this from experience, sorry if it is so.I've discovered a few more do nots in the addition of the redrive to my gyro..........Do not pull the engine down without plugging all of its orifices, doing so will save you some problems latero not, if your engine is running rough after mechanical work, pull the head off your engine on suspicion of having dropped a nut down the intake manifod if you haven't first checked the plugs are connected to the right leads. (I could hear this horrible noise, pulled the head off and found nothing wrong, put the head back on, cranked it up,. exhaust on one side cool - EA 81 - other side hot, pulled one lead off one plug - no effect, pulled other lead off the other pot - no effect - AHA!, swap leads for sudden increase in power... duh!)
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On a philosophical noteo not delay doing something that you have to do now, the pain of doing it now will be a whole lot less than the pain that will arise sooner or later. This applies particularly to preflighting yourself and your machine, especially yourself.
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