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spenaroo

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Everything posted by spenaroo

  1. Japanese bikes use JIS Japanese industry standard. just slightly different - most notably in the smaller screws. best example is the front brake master cylinder. which is why they almost always strip out when people do their own services - without the JIS screwdrivers.
  2. Yeah, I just remember an interview with a sea stallion pilot, where he was going through how maintenance hungry they were. and all the hydraulic issues. very much a case of if there was no hydraulics leaks, then the system was empty.
  3. additional point, there has been a lot of talk about it being a complicated aircraft.... but lets not forget that the alternatives are similarly complex. with their own automated folding systems
  4. yeah, the article I posted earlier talked about the Marines loosing 6 sea-knight helicopters from 2001-20012
  5. A rotorcraft or rotary-wing aircraft is a heavier-than-air aircraft with rotary wings or rotor blades, which generate lift by rotating around a vertical mast. Several rotor blades mounted on a single mast are referred to as a rotor. The International Civil Aviation Organization (ICAO) defines a rotorcraft as "supported in flight by the reactions of the air on one or more rotors"
  6. hmm it does bring a good question about what makes an engine an engine by definition. is it the crankcase or the crank shaft? and how's that work for stackable options like a Rotary. that can have theoretically as many crank cases bolted together as wanted, its limiting factor is creating a crankshaft that takes the forces.
  7. Once again, its not new technology. was played with in the 50/60's Believe it or not the MV-22 Osprey is the safest rotorcraft the Maines operate https://www.popularmechanics.com/military/a7663/how-safe-is-the-mv-22-osprey-8036684/ . and find me a western fighter built since the 70's that didn't have a computer managed flight system.
  8. I dare say its easier to control then a Harrier, or the Lunar lander. its the first generation and has had its teething problems out in the public. just like the F35. its a fairly mature design now and they have the second generation starting to be built with the V-280 Valor
  9. WTF does blockchain have to do with aircraft? its an record/accountancy thing. and AI these days has basically just become the new buzz term for machine controlled or learning. these same guys would say the the F16 and F117 is AI controlled.
  10. what engine was it using, they word is "with standard Rotax ULS 100hp" anything can be a world record if you put enough details on it.
  11. Its ceremony for the "shooters" to launch their boots at the end of a tour
  12. And a second hand A32 Vixxen is $172k on plane sales....
  13. We all want scrappy's wing. but I doubt anyone wants to pay the cost for manufacturing and development. the Jabiru is a cheap basic aircraft. plenty of other faster and slower flying options available. no point chasing after it - if its going to take away from its primary selling advantage.
  14. still has the supply of parts and services. which probably suits the kit supply of light aircraft, may have the facilities still to do the factory built - or leave as is. with Mahindra's component manufacturing could take the engine build/development back to India and work on bringing prices down. to provide an entry into the light aircraft market. at the moment they have been playing mostly with the bigger commercial stuff
  15. How many aircraft manufacturers are in Victoria? my guess is GippsAero who are apparently backed by Mahindra
  16. i don't know if the low stall speeds are all they are cracked up to be. remember swapping from the Jabiru to the Vixen. sure in theory the Vixen had a lower stall speed and better short field - but get the airspeed wrong and it floated down the whole runway, get it wrong in the Jab, she would still slow so often rescuable.
  17. and the biggest hurdle of all. the noise cancelling headset. how many would rather have a good fitting noise cancelling headset - over an in-built coms system that lets in noise. any aircraft helmet I believe will always be inherently flawed because of the priority for communication and comfort. every pilots helmet I view on google has the ear cups off a headset grafted into it. that's a lot of foam carved out. often the shell bulges to accommodate these cups. as opposed to a motorcycle headset which uses 3mm speakers slid into a form fitting liner.
  18. yeah, and then we get into the rotational forces. where the Mips system comes into play. its the yellow part on this helmet. lets the inner and outer layer slip slightly to redirect the rotational forces away from the head in an angular impact. There is an absolute ton of research and development in modern helmets. (Also keep in mind that is a bicycle helmet, look at the coverage and thickness of the foam compared to the ultralight helmet posted earlier.... apparently its not just engines and airframes, the helmets stuck in the 70's too) found a paragliding helmet to compare with. note that there is nothing but liner around the side of the head
  19. Which goes back to the standard and type of helmet. the designs posted earlier - to my untrained eye they have little foam and would offer a very limited amount of protection in a crash. the inner lining and foam is what is important and does the work to increase the time of impact. the shell is just there to prevent puncture injuries. so great for turbulence, but for dissipating the force of an actual impact its questionable. we saw it all the time with Harley riders. would wear the ski type slim helmets (skull caps), that offered only puncture protection and were not suitable for road use. If it was me, and I wanted crash protection - I would be going for a light motocross style design. highly breathable with the chin bar to prevent face head hitting the dash and fairly light weight. can add a neck collar for $50 that will help fill the gaps around the helmet and stop some of the load on the neck.
  20. same thing I used to say when selling people motorcycle helmets. So you have a $100 head or a $1000 head? thats essentially what it boils down to with safety I don't see the point in these helmets unless its to stop the pain of hitting a crossmember or roof during turbulence. Is there even a minimum standard and testing required? And they could actually kill you in a crash, especially as we tend to wear 4 point harnesses. That's a considerable added mass on the head, that the neck has to deal with in a crash. that's the reason why car racing now requires HANS devices (basically strap the helmet to the car so it cant move in an accident) and why motocross riders wear neck braces
  21. same reason why people build dual cab utes.... sure the back seat is mostly redundant. but people like the idea of more room
  22. It's the size for me, If there was a craft capable of light speed travel. I highly doubt it would be the size of a car. and the speed differential too. its one thing to do lightspeed in the vacuum of space. but to then fly through an atmosphere. seems unlikely. more likely they would have an asteroid size ship, clearly visible. and then use shuttles for the atmosphere work. and if there was such technology we should be very very scared, as we probably seem like apes at best to them with intelligence. and we all know what we have done to lesser advanced cultures throughout human history - it hasn't been help and peace we should be praying that we go un-noticed if there is life out there
  23. I suspect there will be more to this story, and one very sheepish horse owner - who I imagine insurance agents are going to be going after hard to imagine an owner taking off in the same paddock as livestock. suspect its more likely a neighbor has decided the grass is greener there I know that extended family's bush property was always having neighbor's running livestock on it.
  24. Go for one with a remote reservoir. common for the rear brake to be mounted sideways on motorcycles. with the reservoir linked via short hose. right way up. they do these set-ups as well on the sport bikes as its easier to package with clip-on bars and fairings
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