walrus

“wandering all over the sky” is safer than following a GPS course between published waypoints.

Today I crossed tracks exactly with another aircraft, exact enough for visual and ADSB confirmation . There was a 3000 ft altitude difference. So what? you say. Absent ADSB I would not even have known to look up and see the other aircraft. If I had been on climb and the other guy on descent, well……. ‘’The ADSB technology disproves, in my opinion, the big sky theory. Near misses are a lot more common than we think.We just don’t notice them most of the time.

Outsourcing CASA will just increase our costs.

believe it or not, some grade 3 instructors dont do it.

Kasper, regarding flap asymmetry, in the absence of an asymmetry cutout circuit, I was taught always to extend flaps while straight and level. That way you will sense a failure as an uncommanded roll. If you extend flaps while turning you may not sense the failure until too late.

I watched the latest issue last night - double slotted leading edge -oh my! I’m fascinated. It will be interesting to see how the old rule applies: “There ain’t no such thing as a free lunch” - there is going to be a compromise somewhere. ‘’The complexity of the ingenious linkages is a concern from a reliability perspective, also the rib design and manufacture. The design looks very elegant and the construction ingenious. My concerns now are aeroelasticity - friction, flutter, etc. Fatigue in all that lovely cnc machined lacework and failure modes. ‘’For fatigue, I’d be tempted to shot peen (or equivalent) everything, although I know it doesn’t matter on this “one off” special which has a short life anyway. I’d like to know the loads in the actuation system because the torque tube will twist (wind up) a little and you want everything to stay in alignment under load. Similarly friction in the actuation system when the wing is loaded - there should be self aligning bearings everywhere. Failure modes? Flap asymmetry will kill you. How do you guard against it? I could go on…..but for me watching this series is like a cook watching Masterchef - highly addictive.

Fun to watch……..”back to work”.

…..Which is chronicled on Pprune.,….. I am concerned for his health and well being. ‘’This case, in my opinion, will scare off anyone wishing to invest in this industry, as will the sagas of Bristell, Jabiru and Angelflight. Couldn’t the Act be changed to allow CASA some leeway to promote investment in aviation?

Quote from an American Forest service officer charged with trying to develop a bear proof rubbish bin/; ‘’There is a considerable IQ overlap between the dumbest tourists and the smartest bear!” I think the average Kelpie or border collie could land most aircraft if they wanted to.

Jack, put your mind at rest, you can't get pinged by Bristell. The Directors of the company that is RAA could perhaps be sued, but all that is available to Bristell if they won are the assets of the company and its Directors and perhaps a D & O insurance policy if RAA has one. Clause 60 and 61 of the Constitution covers the matter. Bristell may also want to consider if they want to perhaps alienate future RAA pilots wanting Bristell products.

There is very little point in Bristell suing RAA in my opinion because even if Bristel won a judgement, there is unlikely to be any money in it. The members are not liable beyond losing the subscription money they paid. I assume RAA has a D & O (Directors and Officers) policy, but I would be surprised if money from that was available to a Bristel lawsuit.

Gadfly, thank you for posting the carburettor video. The high speed photography is fantastic and it is really educational. ‘While carbs can be more sophisticated, as people pointed out, the basic principles remain the same and illustrate the limits of the efficiency of carbureted engines.

I would guess the answer is "a lot". There must be many gathering dust along with a few rivetted assemblies where the intending builder has either given up, passed away or had a change of circumstance. I've seen one or two over the years. Sometimes these abandoned projects come to life again. I am aware of one near me where a widow gave away a thirteen year old kit for an RV (?) something to an acquaintance who is now finishing it. He has already built and flown his own aircraft so he knows what he is getting into with the second one.

Milawa is fine at the moment. You need to get permission from Brown Brothers wines. See their website.

Marty, of course you aren’t a thief if you have paid for the plans. You can do with them what you like and give them to whoever you want. However intellectual property law is perfectly clear. Yes, you can copy the 701 design but if you do it, you can’t call the resulting aircraft a 701. A 701 has a factory registered serial number. You could call it a CH701 replica or suchlike but it isn’t genuine without its own factory serial number. ‘’To put it another way, the recipe for red wine has been known for hundreds of years, but try making your own and labelling it “Penfold Grange” and see what happens to you if you try to sell it. It’s OK to drink it at home as “Penfold Grange” but not to pass it off in public as the genuine article. Yes, people even try. ‘’I’ve seen this happen with yachts - quite expensive ones, copied from xeroxed plans. As soon as it becomes public that the boat is a rip off of someone else’s design, no matter how good a copy, it’s immediately an orphan - no insurance and it’s worthless. I have seen this happen with my own eyes. A guy bought a yacht that he was told was an “XYZ 35”. He had a few problems and changes he wanted to fix, he called the designer and they had no record of the craft construction. They cut him loose on the spot. He couldn’t get insurance, couldn’t keep it in a marina and the last I saw was when it was stripped and the hull burnt. ‘’To put it another way, if you build from xeroxed plans, the result is no different in law from a fake Louis Vuitton handbag and if the owner of the IP objects, it could be seized. As far as airworthiness, AD’s etc. are concerned, the owner is on their own legally because the designer has absolutely no duty of care to them whatsoever. I kid you not about Ferraris, Lamborghinis and other exoticars. There is a huge industry in building fakes. If you want to buy a second hand one you need to check with the factory to ensure it’s history matches what you’ve been told and you need to have the original service books. ‘Copyright lasts for at least 15 years after the death of the designer.

I thought the 650 and CH750 had the same firewall. The Jabiru mount for the 750 should work for the 650. Jabiru USA or Zenith should have the details.

You are right. If the plans haven’t been used to build an aircraft, you are free to do what you like. The new owner of the plans simply has to tell Zenith and register herself with Zenith as the new owner/builder of that serial number. Zenith ask for the serial when you buy bits from them or seek support.

ONE set of plans gives you the right to ONE serial number and the right to construct ONE aircraft. I am going out on a limb about this....... The purchase of a set of plans entitles you to a serial number and the right to construct one aircraft as defined by the plans as well as product support and the right to purchase components from the company that designed the aircraft and sold the plans. It also entitles you to define the aircraft you construct as a "Zenith CH701". If you do not pay for your individual set of plans and instead copy a set already used by another person to construct a serialised CH701, and use them to construct an unserialised CH701 then two things will happen: 1. You will be a thief, a felon. You have taken someone's intellectual property without payment. it is no different from copying and selling videos and it does not matter if it is used to manufacture one aircraft or a thousand. You will be a thief. 2. The aircraft you produce is a bastard. it is NOT a CH701. it is NOT entitled to product support. it is NOT entitled to be registered by RAA, SAAA or CASA. Any subsequent purchaser who does due diligence won't touch it and furthermore, you won't get insurance, or if you do get a policy, it will be voided by the insurer if you try to claim. I have personally seen this happen with boats cars and aircraft - its why you can rebuild an aircraft from its fireproof stainless steel data plate or a Ferrari from its log books. Any smart purchaser will walk away from a bogus product and curse you for wasting their time. The blueprints serial number and manuals cost USD 425. If you cant afford that amount, you have no business building an aircraft in the first place. I assume you are saying this all in jest.

So are you going to scratch build without paying Zenith a cent?

I own two diesel land cruisers. I am quite happy to have an electric version in future provided two things are dealt with: 1. Range. I can currently travel melbourne - sydney without refueling, or Melbourne - broken hill, or broken hill - arkaroola, etc If I can’t have the same range, electric is no use to me.’ 2. Charging time and available infrastructure. Exactly who is going to provide charging infrastructure in outback Australia and how are they going to do it? Think - ten to twenty camping caravanning or trailer rigs per day requiring 1500km + charges. - and that’s just for arkaroola or innamincka and suchlike.

………and suing RAA is a waste of time. Furthermore, members are not liable for any more than the balance of their current subscription. In any case, Bristell would have to prove that the alleged action was ordered and approved by the Board and was not the action of some wilful employee….. ’’ How much is in kitty anyway? Not enough to keep Bristells lawyers fed, it won’t happen.

The “Y” is the country designator.

CASA was just kidding. From AOPA:

Flew yesterday doing scenics for the neighbours. I had five potential conflicts during 70 minutes flying. Four resolved by radio, one by ADSB - IN. Only one of the five confirmed visually. ……and this is at a “quiet” country airstrip! The unalerted see and avoid, no radio crowd are just accidents waiting to happen because they don’t even know they have had a conflict. ‘’You need the lot! ADSB, radio and a good scan.

DO NOT add moly or any other friction modifier to oil if your rotax has a slipper clutch. If you do, your clutch will probably start slipping and require replacement. Sorry to be a wet blanket, but rotax has a service letter on fluids.