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About Marty_d

  • Rank
    Well-known member
  • Birthday 12/04/1972


  • Aircraft
    Zenith CH-701
  • Location
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  1. Refuelling shouldn't be a hard ask for a drone. From my limited knowledge I believe that all you have to do is meet the recipient at a specified height and location, then fly extremely stable and steady racetrack patterns.
  2. Mods - I really think Off Topic is the spot for this thread.
  3. Quick update - I finished trimming the lower cowl today (apart from where the exhaust will exit), located it properly and did a 1/8" hole on each side so I could cleco it. Unfortunately I'm not going to be able to use the top cowl - it got a couple of cracks when I was trying to lever it out of the mould, and when I try to press it down in position it creases along the crack lines. I think I have enough pieces of carbon left to do another one, and this time I'll use PVA - I'm a convert Peter! I did some weighing today - the trimmed lower cowl is just on 2kg, the top
  4. My engine came out of a well maintained training aircraft so I might leave the adjustments as they are initially!
  5. Bob, I've just been watching some youtube stuff about dzus. Apparently some have a reduced section on the shank so you can slip a circlip over them which goes between the parts to be held. This would keep the dzus attached to the outer part when they separated. Like below: these ones from Bullant seem to have a nylon washer (1.3mm thick), not sure how it goes over the large part to be held on but it'd certainly stop accidental droppings.
  6. That's the thing isn't it. I can imagine that the cowl is on and off like a bride's nightie while the plane is under construction, FWF is being sorted out and everything adjusted. But after you start flying, how often do you remove it?
  7. Thanks Bob. Being a scratch built cowl, there's no guarantee that other planes would have the same thickness. I'll measure as best I can to select the right length. Great advice - keep it coming!
  8. Yes it's starting to look like DZUS are the way to go. Someone gave me a link to an Australian supplier so will calculate how many I need and put in an order.
  9. Thanks Bob, Peter and Planey. Bob, that's interesting that the Sav has the cowl inside the fuse ally. Everything on the 701 is built so the overlaps are downwind, ie the bit that's towards the front always goes over the bit behind it. I always assumed that cowls would be like that too. The installation instructions for the factory cowl (attached) have it overlapping the fuse and screwed to it, with the top overlapping the bottom and screwed together. I especially like the bit on page 8 that says "Note: on our demo, we push up the bottom cowl to fit around the fuselage and
  10. F10, there's quite an extensive thread about the Orange Clown in the Off Topic section. However letting people know that you think he was an effective president is kind of like telling people you think getting syphilis is a character-building experience - you're fully entitled to your opinion but you probably won't get much agreement.
  11. Hey folks, As promised - some photos. I took off the muffler today and started test fitting, need to work out where the exhaust is going to exit the cowl and cut accordingly. Haven't got the prop yet but bought a spinner that bolts on the front of it, temporarily bolted that on with some BA (Bunnings Aerospace) bolts to get some idea of what it'll look like. By the way - thinking about how the top and bottom pieces will go together - planning to use aluminium piano hinge on the sides and maybe Dzus round the firewall connection. Any advice (and pictures) o
  12. Obviously not appropriate if you're only pulling 10 rivets, but my generic air riveter has pulled around 6500 with only occasional unjamming required.
  13. It worked!!!!! I just popped the lower cowl out of the mould. It came straight out, no sticking, no lumps and bumps and divots. (Well maybe a couple of minor divots!) Decided not to use gel coat this time, just 4 layers of carbon fibre and equivalent weight in polyester. The difference - thanks to some excellent advice from several people, especially @nomadpete - was using PVA sprayed and brushed into the mould first, and a bead of silicone around all the opening holes and the edges. Yesterday I used a small foam roller to put on a coat of poly, followed by carbon,
  14. Bob, you show excellent workmanship in awl of your work.
  15. @RFguy - if you're thinking of flying over the ditch, give Peter Reed from SkyFlyte Aviation (Devonport / Wynyard) a call. I bought my 912 off him and had a discussion about flying the Strait. He does it quite often in a Foxbat and could advise you about special equipment, best time to fly, route etc. Here's his website which includes contact details: https://flyingintasmania.com/about/
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