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Red

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Everything posted by Red

  1. Red
    You replied to 2 different posts from 2 different posters, in that single reply, gets confusing for readers. Can you try and make some indication of who you are replying to in your posts (most use the quote function) Thanks☺️
  2. Red
    My point is that it doesnt wholly rely on through bolts to keep the cases shut they have sensibly placed bolts around the edge of the case and dont rely on overly clamping the central mass where the mains reside just to stop the case leaking or fretting. Whats your theory on it Nev?, I'm sure you have one Edit..sorry thread drift🙃
  3. Red
    Mine did that and it was low hours it's supposedly common. My theory was that the torque required to clamp the cases using just the through bolts is so high that when the aluminium cases expand (expands more than the steel through bolts expand in length) the case clamps down on the mains. Noticeable that on something like a Continental engine the cases are held shut at the case edge by multiple bolts and don't exhibit this problem.
  4. Red
    Yea, the limiting factor on 912 series is the crank rigidity, its a multi piece pressed together crank and too much torque will twist it. This is what governs the allowable boost on a 914 for instance though the Rotax limits are very conservative for arse covering reasons (there is a little dongle that can be purchased for the 914 that allows a higher boost , dubious legality )
  5. Red
    I must be wrong about the F650 rotation as the rotax starter is ccw so if the same starter fits an f650 then it too must be ccw, apologies for wrong reading of the F650 setup, though I still cant see it, must be something hidden in the gear train
  6. Red
    There are a few factors, firstly the f650 starter is actually 180 degrees different in orientation to the 912 and there are 2 gears between it and the sprag. who actually lists the starter as ccw? http://faq.f650.com/FAQs/Photos/TransmissionPhotos/269-Alternator.jpg
  7. Red
    The oils I use meet or exceed the makers spec, which of course is not the same as "recommended" which is far looser term often influenced by factors quite apart from efficacy
  8. Red
    I've always used any semi synthetic motorcycle oil that was up to spec (most exceed spec) and happened to be available, I dont put much store in the various claims of superiority the competing companies make they all have to pass the same tests for quality and performance Just my opinion, I have others😁
  9. Red
    Looking at workshop drawings for the F650 engine and noting the gear arrangement between starter and sprag clutch the starter motor will have clockwise rotation
  10. Red
    I'm not sure why people build these things , its not advancing anything its just buying some existing tech and ending up with an aeroplane that doesnt do what it did before you ripped the engine out. What am I not getting?
  11. Red
    The short clip of the model on the treadmill at first glance will convince some, look closely and you will notice that she holds the model for a short time so that energy is put into the system and on releasing it drives the model, basicly the treadmill is spinning up the wheels while she inputs a force to keep the model stationary instead of it reacting and moving backwards, the whole description is cleverly tthought out and explained, but its a joke
  12. Red
    You can't get more than 100% efficiency in any energy conversion, this device is a joke cleverly explained
  13. Red
    Sorry to be blunt, but taken as read that is complete nonsense P.S. Just read the attached file ..good grief does that guy sell Dihydrogen Monoxide
  14. Red
    Apparently Captain Kirk is going up next....To boldly go where no 90 year old has gone before🙂
  15. Red
    Might want to think that through Microman
  16. Red
    Now I've heard some silly things but...
  17. Red
    Blimey is it?, I thought it was a type of material used to make jackets out of 🤪
  18. Red
    I thoroughly agree
  19. Red
    I've been reading Internet forums for a loooooooooong time (probably too long and I think I can honestly say I've never seen anyone dig such a big hole for themselves....astounding
  20. Red
    Its really pretty, but the flight model for the prop singles is not great in some aspects, Landing the taildraggers is way too easy you have to try hard to mess up, you can climb at <Vx with no rudder needed to keep the ball centered and on the take-off roll the slightest crosswind from the right (2-3 knots) will completely overcome the tendency of the included taildraggers to swing left on raising the tail and swing you the opposite way as if the crosswind was 10+ knots..... very unrealistic Turbulence seems well modelled Its multiplayer function is awesome Overall X-Plane has more realistic flight dynamics but MSFS 2020 is a fantastic game and great way of explorinng places you know or have never been to. Has been great fun when stuck home
  21. Red
    Agree on the lack of tech pieces in UK Mags and far too much emphasis on personal stories of some awesome trip which generally have the same effect on me as people showing their holiday snaps and describing how great the service was at the Tapas Bar. Saying that, the last Flyer mag had some good stuff
  22. Red

    Jabiru Engine

    Red posted a gallery image in Engines, Props & Avionics

    Jabiru Engine
  23. Red

    Jab engines

    Red replied to Yenn's topic in Engines and Props

    Should I close the Jab Engines group?, it seems to be superflous with 99% of activity in this thread. Probably better to keep all the info in one place....what you think?
  24. Red
    Hello Bruce, I'm a newcomer to Jabs, but have a lot of time on Rotax 912 which uses same carbs I tend to view Hoses as an 'on condition' component carb overhaul for the bings If I havn't touched them in 5 years then I will take apart and replace anything needed )Diaphragms I change regardless of how they look). Carb Socket I will also change if it has lasted 5 years (in my experience some can go bad much sooner) I use only Ethanol free fuel, if using fuel with Ethanol id be looking very regularly at my hoses and carb floats Jabiru Fuel pump is a bit of an unknown to me right now
  25. Red
    Such a shame these projects ended up in the hands of Walter Mitty
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