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IBob

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Everything posted by IBob

  1. IBob
    I made my own simple wing LE root fairings, as I didn't like the way the standard fairing (which just extends the LE shape inboard until it meets the windscreen) intrudes on the pilot's vision. They are just a flat aluminium shape, curved round, nothing 3D. I am a reasonable DIY pattern maker, but it was a surprisingly long job getting a pattern for the shape. Sorry, I can't comment on performance as this was done before she flew. In the case of the Sav, I doubt there would have been any difference.
  2. IBob
    Just don't go to the BMW shop and say 'Show us yer nuts'..........
  3. IBob
    Amazing, yes! I would imagine Zipline chose to prototype this in Rwanda for various practical reasons around environment, regulation and liability. Note also this is taking place next to where kids can't even afford a real football. So a disturbing juxtaposition of gee whiz futurism and ongoing poverty.
  4. IBob
    I'd have to say mine look very much like copper, and I don't think it's a protective plating. Could they be bronze? They have the fine cut part way across them, like the small nut in the first illustration above.
  5. IBob
    Very nice Bryan, and good to see they have that sorted out: I have the older f/glass wingtips...which are also an exercise in fitting.
  6. IBob
    Bryan, the door top does close against this with a degree of pressure. And although I have only ever built the one aircraft, I would be very surprised if there were a kitplane out there where every single part arrived cut, bent and drilled perfectly. I think the Savannah kit does very well in that respect, but there remains a small amount of what I would call 'fitting'. You're going to love the rear fuselage assembly.....but if you have the extended baggage, be sure to fit that before the rear fuse skins.....)
  7. IBob
    Ah, I had misunderstood you. I was not thinking to introduce a bounce. I was thinking more along the lines of setting the aircraft up in final landing configuration and attitude, but at safe altitude. Then applying full power, and experiencing and handling the pitch up.
  8. IBob
    I don't disagree with you, Facthunter, but surely this is a situation every student will face with a missed landing/go around?
  9. IBob
    Yep, that's something I think should be emphasised and practised in training. Or should have been for me: the degree to which full flaps, full up trim pitches the aircraft up when full power is applied caught me unawares for one episode of very poor piloting.......(
  10. IBob
    Hi Bryan, 1. They seem to have the part numbers for R and L wing muddled on Page 32/36 that you have shown. I noted this in my build, the correct numbers for R and L are on the previous Page (L wing numbers are in brackets). So check you have the correct parts. 2. If you go to the instructions on that Page 31/36, it says at the end 'Note that they have to be filed to fit inside SB003-5/6'. I believe this is what I did: trimmed/filed them as necessary so that the assembly sits in correctly against the wing rib. 3. Nowhere in my build did I have to move holes. I used correct sized tapered podgers a lot to ease holes into line, and sometimes it was a matter of assembling or clekoing in a different order. But the holes always lined up. I would regard drilling new holes as an absolute last resort. (4. When you get to it, I had similar problems fitting the seat pans under the adjustable seats: initially I couldn't see how they would fit, but it was just a matter of trimming/filing small amounts off the pan edges at the points where they were binding.) PS: While they refer to this part as the 'root wing door support' the door actually pivots on fixtures on the front and rear door columns. When closed, the top of the door presses against this 'root wing door support' closing the air gap there.
  11. IBob
    And that's what folk don't seem able or willing to do. A while back someone lent me a book by David Icke. I got no further than page 1 where he states that Karl Marx was part of a capitalist plot. A quick search of David Icke then reveals that he is a conspiracy theorist of long standing, charismatic with a large following. That he was once publicly ridiculed on BBC TV for saying he was the son of God. That he wore turquoise (I think) for one whole period, something to do with receiving energy and vibrations. That he thinks (or thought) extraterrestrial lizards are running planet Earth. And that's just the start of it, old stuff long before the current surge in 'beliefs'. But somebody bought this book.....and lends it to whoever they can. It's like the world has lost it's collective marbles.......(
  12. IBob
    I'm told that, now the whole Covid thing has gone a bit stale, the talking heads who push this sort of sh*te have 'pivoted' to climate change, just who is responsible or not and what is actually going on there. It seems to me most of the playbook on this stuff comes ready-packaged from the US. And it seems to find a home with folk are chronically indignant.
  13. IBob
    A good mate of mine told me 'they' were looking at confining us all to within a few miles of our town/village. In fact they may be already trying it.....somewhere like Cambridge, he thought. No thought to how that could be achieved and policed, quite apart from the likely reaction of the populace to any such thing. But he did express surprise and horror that some of his informants....including people he knows.....think Putin is a nice man.... What can ya do???
  14. IBob
    Some folk seem to be magnets for that sort of stuff....with no apparent ability or tendency to do any sort of reality check. Just about everyone knows at least one of those folk by now: sometimes they are good friends or family. And nobody has yet figured out what can be done about it, since arguing over the 'facts' seems to have no positive effect at all.
  15. IBob
    Good points, Skippy. Regarding the balance tube, I'd be curious to know the specific function it was designed for. It is a skinny little tube and I find it hard to imagine much mixture travelling through it: I don't think I would be relying on it to compensate for mismatched throttle openings. As for the Bowden cables, I'm sure you're right, though my kit came with DIY cables you cut and thread yourself, and I doubt they are very high tech. I should probably have added that I am looking for smooth free operation of the levers and cables when checking them, and especially as the standard setup is only positive when closing the throttles: on opening, we are relying on the carb throttle arm springs to pull the cables.
  16. IBob
    It was just a suggestion for a very simple check that has worked well on my 912ULS. If it was vibration free before (?) I would be looking at what has been altered/replaced in the work you mention.
  17. IBob
    I would be doing a simple check on the balancing of the carbs: someone (here?) recently said that the main problem they had come across with balancing Rotax carbs was poorly installed or maintained throttle cable/lever systems. I do a static setup (engine stopped) where I push to full throttle, and check that both throttle levers have gone to the full throttle stops on the carb bodies. I then very gradually close the throttle, watching to see both throttle levers come off the stops at exactly the same time: I do this several times, as it's hard to look two places at once. I then check the same for throttles fully closed, but it is the fully open I am focused on, and any adjustment of the cables is done to get simultaneous action there. I have done this from new, and have very smooth running: several minor adjustments were required in the first 40 or 50 hrs, but none since then. I also keep all throttle linkages and cables clean and lubricated to maintain free movement.
  18. IBob
    Thanks for that, Skippy. So, as suspected, a good deal more than the 2L/hr figure that has been bandied around for so long.
  19. IBob
    Hi Steve, my insurance is Avsure through Crombie Lockwood, I've found them very good to deal with: jenni.hellyer@crombielockwood.co.nz
  20. IBob
    BC, how big and where is the Viking header tank?
  21. IBob
    Hi Steve, you can search by aircraft type at the CAA registration website: https://www.aviation.govt.nz/aircraft/aircraft-registration/aircraft-register-search/ And a very good source of detail where you can search, for instance Avid Flyers of New Zealand is: https://nzcivair.blogspot.com
  22. IBob
    The vent pipe from the 6litre collector tank comes across to the LH side and up through the front LH corner of the parcel shelf. From there up inside the LH rear door column, and enters the wing at the rear of the wing root rib. From there into a fitting high in the side of the LH inboard tank. The two corrugated pipes in the pic are this breather pipe, and the electrics for the wingtip strobe, which both come up the door column. (The fuel supply lines have all been carried over to the RH side of the cockpit to a valve block, allowing individual tank selection, as per Mark Kyle's build. If you have the long range tanks, this is a very good system, for all sorts of reasons.)
  23. IBob
    BC, the general layout of the fuel system is shown in a drawing in the POH, which is in the back of your manual. The fuel return line is piped out of the bottom RH corner of the control panel, then up through a solid pipe, supplied, inside the RH door column. from there it goes into the wing root at the front to a fitting high up in the side of the RH inboard tank.
  24. IBob
    Very neat, Marty. You must be well pleased with that! Yep the cap is a bit stiff, but probably less so once you get a bit of oil on the seal.
  25. IBob
    Skippy, if the airbox drains are after the filter (as they should be) surely air is coming in through them during engine operation? My build has one drain only, small diameter, presumably to reduce the amount of air coming in that way. And as a a separate suggestion: I wonder if what you are seeing is the result of (a small amount of) fuel vapourising in the float bowl then condensing in the air box? It seems very unlikely, but for the miniscule amount you mention (approx 3 drops per minute), whatever is causing it is a minimal. I would be reluctant to be dismantling/swapping bits on a new Rotax engine unless absolutely necessary: they are manufactured to a high spec and usually just bolt in and go flying. Question: are the carb vent pipes to the airbox sloped up, down, or level?
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