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  1. S

    Craig Cato's New Propellor Gave Us Insane Results! | Whisper Sling Prop Test

    It have been struck by the very smooth marketing delivered by Sting. This extends to the non aerodynamic, but very eye catching, styling of their aircraft. In short, without a shred of evidence, I find it hard to trust anything they say. 🙄
  2. S

    Those Were the Days!

    Inflation is an inevitable, unavoidable, component of human commerce. Sure politics/regimes can briefly influence this process however human behavior can only be paused not cancelled. As long as one person wants a product/service more than the next, is willing/able to pay more, the price will...
  3. S

    Those Were the Days!

    My point was not about dedicated military hardware (aircraft/tanks/etc but civil engineering equipment, that was driven/dumped in the Pacific ocean, after the war had ended. This was off islands that had little, if any infrastructure, before the War and desperately needed more after the War...
  4. S

    Those Were the Days!

    I still don't quite understand the, immediate post WW2, economics/politics of dumping all sorts of equipment overboard. I lived in the Solomon Islands for a while - not only were aircraft and boats scuttled, there was all sorts of civil engineering equipment (dozer, rollers, excavators...
  5. S

    Inherent, quiet?

    The ATEC line of aircraft are very quiet. Having a conversation, without headset and yelling, is perfectly possible. Take off /full power noisy is less than that from a ride on mower. I put the low internal (cockpit) noise level down to their composite airframe. Metal aircraft are like tin...
  6. S

    Rethinking Propellers?

    All credit to you Billski - at least you checked it out. Seems your peers on this Forum are unable to see past the main stream (mainly US) makers. An outstanding feature of these propellers is their extraordinary light weight - seem to be less than 1/2 (1/3 the weight of my prop) that of their...
  7. S

    Rethinking Propellers?

    E-Prop (https://www.e-props.fr/ ) seems to be taking small aircraft propulsion to another level (response No 22) Completely ignored by all you "experts" this innovative French propeller maker supplying the light aircraft market.
  8. S

    Britain's Top 10 Most Beautiful Aircraft

    Very pleased to see the DH Hornet in the list - for my money the best looking piston twin engine fighter ever & possibly the best all round performance to boot.
  9. S

    Tube flattening techniques

    To improve point clearance in a small diameter exhaust pipe. On exhaust, mark point & orientation to be deformed/dented. Find steel water pipe with similar ID to OD of exhaust. Cut piece the length required. Length is not critical, an inch should be sufficient in most instances. Cut water...
  10. S

    Rethinking Propellers?

    E-Prop (https://www.e-props.fr/ ) seems to be taking small aircraft propulsion to another level
  11. S

    Seeking comments on gravity bleeders such as Homebuilders Brake Bleeder

    I just use a disposable syringe (purchased from chemist/drugstore) with some clear vinal tube attached - cheap & simple. For min of effort/max pressure, size of syringe should be a little larger than slave & master cylinder + tubing volume. Can be done without a second person monitoring the...
  12. S

    Bill of Materials for my Fuel System Plumbing

    I support hose systems - minimal joins, zero fatigue cracking, cost effective, quick & easy to install and as long you use quality hose (I like Gates) and its replaced every 5 years (Rotax recommended intervals) you will have no problems. The best systems are a well thought out combination of...
  13. S

    Transfer Pumps and Fuel System Configuration

    Its far from ideal, however this is a Sonex which has already reached a level of sophistication/complexity well beyond the designers concept. Additional transfer redundancy should not be required, as the engine can be supplied direct from any one of the three fuel tanks ie fuel does not have to...
  14. S

    Transfer Pumps and Fuel System Configuration

    "That is why my now built system just pumps from a selected wing through a duplex valve and when header tank goes full, a pipe at the top of the header takes excess flow back through the other half of the duplex valve to the originating tank. " Good system, simple & reliable - had something...
  15. S

    Transfer Pumps and Fuel System Configuration

    I got brain overload after reading the first page, so apologies if this has already been said: First; Apply KISS - the simpler the fuel system the more reliable & easy to manage in flight, it is likely to be. Second; Your return fuel need only go to the header - the header is the common tank ie...
  16. S

    I don’t get header tanks …

    My Sonex Legacy (A) plans built has, an in fuselage, 40L header tank and 2 X 30 L wing tanks. The header (located in the traditional Sonex fuselage tank position forward of the instrument panel) is a header because it can only be filled from a wing tank ie no external fill point Sonex have a...
  17. S

    Fuel Tank Vent Check Valve

    Don't know if my comments will help and may only be applicable to low wing aircraft - I advocate having a simple/single tank vent, that is routed, through an expansion tank and then to the highest point in the aircraft before exiting. The expansion tank will catch fuel slop/spillage due to...
  18. S

    Adding Fuel Fitting to Tank

    A correctly designed/installed header tank will not result in hot fuel (or at least no hotter than that coming from the main tank(s)) I agree that returning to the/a main tank, especially if plumbed so as to deliver above the fuel level ( relative low pressure), is the ideal however a header...
  19. S

    Pros and Cons on Composites vs Aluminum

    Interesting: - For the most part all data/comments US centric - little if anything about the rest of the aviation World. FYI the people who think composites are delicate materials that cant stay out in the weather - my local flying school uses a range of Jabiru aircraft - all live outside - not...
  20. S

    How does it fly?

    So you want it all - Good cross country speed, low stall, miserly fuel consumption, low maintenance cost, low low empty weight/high pay load, comfortable cockpit for two adults and intuitive handling - Check out ATEC Faeta
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