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IBob

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IBob last won the day on June 25 2019

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About IBob

  • Rank
    Well-known member
  • Birthday 22/04/1948

More Information

  • Aircraft
    Savannah S
  • Location
    Wairarapa
  • Country
    New Zealand

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  1. Hi Marty, as Downunder has indicated above, it's really very straightforward. I used a dowel about 90mm long fully inserted in the elbow. Just heat the elbow a bit, then feel with the dowel if the elbow will rotate, heat a bit more if not etc It's sort of gummy but there is no great force required. The cylinder head ones are similar, but require a lot more heat as they use Loctite 648.
  2. Hi Marty, I shifted mine using a piece of dowel up the pipe end. Fortunately, they move pretty easily on the pump housing, and it's not hard to play a butane torch on the pipe, rather than the housing. I have also replaced a pipe on the underside of a cylinder head. This uses a different Loctite, requiring a fair bit more heat, and I made a simple mask out of scrap sheet steel, so that only the pipe was directly exposed to the flame. You could also do this with the pump housing, if you were concerned, though I don't think it is necessary. In the case of the cylinder head I removed and replaced the pipe. I found a 28G shotgun cleaning brush useful for cleaning the thread in the head (in a perfect world you would do this with the appropriate tap). These are fine threads in soft material, and do need to be treated with care. If removing and replacing, take time to carefully clean the threads, and make sure Loctite is applied to both surfaces before fitting.
  3. "Just because most of us are as old as Methuselah, doesn't mean we deserve veneration." I'd say you're pretty safe there, Old K. There's an international shortage of venerators nowadays.......(
  4. "No video with support format and MIME type found."...................................(
  5. Highly likely they will have had fuel in them on the ground during initial fuel system testing?
  6. Hunsta, you're a spring chicken........go for it!
  7. I used Sikaflex or something similar between the tanks and the lateral supports underneath, to prevent the rear of the tanks from shifting around. I hear some builders add small vertical brackets to the lateral supports, either side of the tank/s, to do the same thing.
  8. Hi Hank, the tanks are supported underneath, the fillers are on the top (obviously!) and situated towards the outboard edge of each tank. I centered them on installation, the fillers have now shifted further outboard. Since the tanks are fixed laterally underneath at the front, and the filler is near the front, I doubt very much this is due to the tank shifting laterally on it's mountings. I think it more likely that the tank has changed shape and bugged out a bit due to the weight of fuel. It's not a biggie, but were I building again, I would do the initial setup with the fillers offset inboard. Apart from that, I have no problems or complaints so far with the tanks. I think if the holes are drilled cleanly and with care, the fittings work fine. And I have been careful to keep my delivery pipes low and level, and avoiding wherever possible undulations in them. I have had all of them full, and they all drain completely on the ground (though no doubt in a sustained descent it would be possible to unport the fuel feed). I do think the lateral supports under the center of the tanks could be more robustly attached, and I know at least one builder who has done that.
  9. Hi Mark, more progress on a big job there...very impressive! How and why were the fuel tanks attacked with a heat gun? I notice that both my (inboard, regularly used) tank fillers have shifted sideways, presumably as the upper tanks have expanded with the weight of fuel in them. Makes sense, but if I had known I could have offset tham during construction...........
  10. Yep. And when you finish that, read Christopher Robbins - Air America, if you haven't already. Not to be confused with the movie, which shows just one tiny slice of the entire picture................
  11. For those who enjoy aerial pics and puzzles as I do: Paramushir plateau approx: 50'42"06 N 156'07"30 E
  12. Boleropilot, I spent 3 months on Paramushir (one of the Kuril islands off the Kamchatka Peninsula) in the mid '80s. It has a high plateau at the northern end (unusual in a volcanic archipelago) with an airstrip and a great deal of listening gear. It was a no go zone. One of the theories at the time was that the KAL007 incursion was deliberate, intended to cause Russia to light up all it's surveillance gear so that the US could get a look at it. We asked the Russians on the island what had happened: they were the first to say that there was no way for them to know, due to the amount of state propaganda. But what they were told at the time was that a large number of foreign aircraft were shot down on that day, one of them being a civilian airliner. As an aside: looking at Google Earth, the Paramushir plateau now seems to be deserted. But you can still see where the airstrips and strategically distributed buildings were...
  13. Great news, Steve! Don't forget to post the pics so we can all enjoy....)
  14. Yep, it's got pretty weird in the last few decades: stuff that may look the part, but doesn't actually function. The simplest example. Some years ago I found myself setting up home again, and picked up one of these at the local supermarket: When I got to checkout, the operator said 'I wouldn't buy that, everyone brings them back'. And when I asked why, she said they bend. So I gently squeezed the handles together, as you would to puncture a can, and sure enough, the flat handle promptly bent until it touched the other handle.... It's very much buyer beware at all levels now, but as Facthunter said, judging what is good is beyond the skill levels of many people, and understandably so.
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