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IBob

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Everything posted by IBob

  1. IBob
    You'd want to be confident the lines weren't painted on the road after a Friday lunchtime or on a Monday morning..........
  2. IBob
    I like the sound of your auto fuel pump, Mark. I would suggest the pump still needs to be started then stopped in manual prior to engine start and auto operation: (Part of my) prestart goes like this: 1. Check tank levels. 2. Check all fuel valves and isolator are set as required. 3. Master switch on. 4. Fuel pump on: check fuel pressure rises > 2PSI. 5. Fuel pump off: check fuel pressure falls to 0. This checks that the fuel return, which has a very small orifice, is not blocked. The fuel return is essential to avoid the possibility of vapour lock in the fuel delivery system. Since the fuel pump has a built in check valve, if the fuel return is blocked the pressure will not fall when the pump is turned off prior to engine start.
  3. IBob
    Watching this with interest, Mark. I have a Sav to wire somewhere down the track.
  4. IBob
    There was a corkscrew tunnel entrance onto a bridge in Brisbane back in.......um........the 70s. I think it was 270deg, or a 3/4 turn, and I don't know if it got tighter as you went round, but I do know that there were multiple tyre marks well up the outside wall by the time you got towards the other end....
  5. IBob
    Whattttttttttttttttttttt???????????????????????????????????? Dammit!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
  6. IBob
    Looks great, Marty! Will there be pushbutton to test low fuel indicator, and battery discharge light?
  7. IBob
    Plus one for that. Cheap as chips from Jaycar in various diameters and does a great job of tidying it all up. Mine are cable tied at the floor below the front of the doors, and they don't shift at all.
  8. IBob
    Hi Blueadventures, I struck exactly the same thing on my Sav S build. In my case the slop was in the holes in the control stick, not in the bush that passes through the torque tube. A mate here turned up a couple of little top-hat bushes and we drilled out the holes in the control stick to take them. I wonder if this is the result of using 'almost the same but not quite' metric drills for holes that take imperial AN bolts........
  9. IBob
    C'mon guys: plastic bottles with large diameter tops that nevertheless seal tight when the cap is on are available in any gas station. Just tip out the lurid chemical that some eejits mistake for 'drink' and stow within arm's reach.........)
  10. IBob
    Perhaps these were some of the awful decisions about what is for the greater good, that we all hope never to face, but that sometimes have to be made in wartime. For example: As we now know, the Allies learnt to crack the (shifting) coded messages from the Enigma encoding machine, used for critical communications by the German military. The dilemma then was how to use that information without alerting the Germans to the fact that their comms were not secure. One common rumour after the war was that the war office knew of the upcoming air raid that blitzed Coventry, but chose not to alert the populace for this reason. Whether this is true, I have no idea. But it certainly seems possible.
  11. IBob
    Hi Marty, we were discussing 912 starts while working on a build yesterday: The combination of your positive and negative wiring, and the soft start (timed spark retard period) on your engine should give you prompt and faultless starts every time. It works so well, in fact, that the day I get any hesitancy or misfiring on a start will be the day I go looking for the problem.
  12. IBob
    True enough. But you don't think the Gestapo were seen as dealing with the Jewish?
  13. IBob
    I have no idea when the tide changed, but certainly prior to WW2 a significant number of privileged people in Allied countries were pro-fascist and also anti-semitic. This included the likes of aviator Charles Lindbergh, Dame Lucy Houston (who wrote a check for 100,000pounds to support the Schneider Trophy effort when the British government would not, as a deliberate snub to the Labour government of the time), and Edward VIII who abdicated. I don't know whether or how much this may have been the case in Australia and NZ.
  14. IBob
    We're locked down right now, but here's a couple of shots from a flight earlier in the month: the ranges approx 4500ft with a little snow on them to the west of Hood aerodrome in the N Island of NZ. When the westerlies push the clouds over and down, we stay away, but that day was perfect for cruising along the snow line........
  15. IBob
    Mine is on a lug on the starter motor case.
  16. IBob
    Yep, provided there is enough cable to route it so that you can secure it to the engine mount etc. I'm amazed at some of the pics we occasionally see of wiring trailing loose around engine compartments: seems to me that's asking for a break or a short due to vibration and chafing.......
  17. IBob
    Is this it? My yellow alternator wires come up to a connector. This has a mating connector, and the wires from that then go up to the regulator. That's the connector, cable tied down and together at lower centre of the pic:
  18. IBob
    Marty, you already have your alternator yellow wires connected to the voltage regulator, right?
  19. IBob

    Rotax EGT

    IBob replied to BirdDog's topic in Engines and Props

    Crikey, that is a long one, in this age of ever shrinking attention spans! But I am interested, so mental note for rainy day......
  20. IBob
    100hp 912 gearbox ratio is 2.43 : 1 so 5000 = 2058 5100 = 2099 5200 = 2140 5300 = 2181 5400 = 2222 5500 = 2263 5600 = 2305 5700 = 2347 5800 = 2387
  21. IBob
    Thank you, Meglin. I think here that would also be calendar time and what you call resource would be flight hours.
  22. IBob
    Agreed, Garfly. I found that old clip quite wonderful..............)
  23. IBob
    Yep, it's the slippery slope of More Is Better. Quite aside from questions of legality, and the realisation that as a cheap drunk I might take a trip and never make it back, it was what deterred me from various drugs when various drugs were all the go: the real fear that altered states would render everyday life grey and bland by contrast.
  24. IBob
    Yep the camera work and editing is all getting so slick, it's losing it's impact. I just watched a similar Red Bull thing: lots of short fast clips, often from angles that accentuate the action, and while it ought to be more exciting, it somehow isn't. Also: at the back of the mind lurks the realisation that it is now so easy to CG or C modify this stuff...it just becomes a big shrug.
  25. IBob
    I've been on DC6s that used water injection on very short strips. I was told it was to boost the engine output, while also helping improve cooling. I would think the combustion pressure in the engine would increase: I would want to be confident the engine could manage that
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