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  1. P

    Parts Wanted Avid Catalina Builders Manual and plans

    Hi, I'd like to buy the builders manual and plans for the Avid Catalina. Thanks
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    Parts Wanted Richard Bach - Travels with Puff

    Hi, I'm still here. I've sourced 2 copies (my mistake) due to long shipping times acrossthe pond. So apologies for not getting back to you. Also I don't read HBA every day as I'm working engineer. Thanks for your efforts to get a shipping quote. Kind regards Graham
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    Simple design for pressurized Sailplane

    Check out the Swiss stratosphere motor glider. It does 80% of your dream. First skydive from a solar electric plane accomplished in Switzerland
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    Parts Wanted Richard Bach - Travels with Puff

    hi all, I'm looking for a copy of Richard Bach's book - Travels with Puff. I'm in UK and therefore would need to be posted or Fedexed. Happy to pay sensible price. thanks
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    Thinking about developing a new engine for GA, but looking for a bit of feedback before starting.

    Sounds like the Porsche PLM engine that found its way into a few Mooneys.
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    Why is trailing link gear so good?

    Hi, push a loaded wheelbarrow forwards against a bump/step and feel the huge loads in the wheel/your arms when it hits the bump. Then repeat the test pulling the wheelbarrow. This simulates "Vans like" tricycle front landing geardesign versus trailing link concepts. Tricycle landing gear...
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    Alternative wheels/brakes

    Hi all, as I'll be buying a bmw motorbike for my engine, I'll consider using its front disc brakes for my LSA aircraft. Has anyone done this before? If so what are the pitfalls?
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    Low or mid wing spar position - pros and cons

    Hi Victor Bravo, Totally agree on your comments. There was a recent Cassutt crash - tragic. So I look at the aircraft structure. It's definitely not designed for the wing to be impacted by a tree or horizontally. There's not sufficient structure in the wing attachments to absorb any crash...
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    Modern day "motorcycle of the air" aircraft class?

    hi rtfm, this sounds a lot like the Mosquito bomber construction method. :) - first layer of strip planks over concrete mould - secondl layer of ply frames and stiffeners - third layer of strip planks all held down under massive rubber straps to squeeze out the glue. cheers Puggo
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    Dreaming Up the Ultimate Light Fighter Inline

    Hi, this engine is slightly heavier than for a LSA type aircraft, but would suit a scaled fighter. The Volvo/Yamaha v8 weighs in at 190kgs and with its narrow 60' V angle would suit a single (or tandem) fighter type. 315 hp on tap...
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    600lb 200mph Sonerai 2L?

    Hi, my ideal plane is along similar lines. My thinking is to adapt a Soneria 2LS for - side-by-side seating (narrow as I'm not a big lad) or retain 1+1 tandem for speed/weight - TBC - engine is BMW 1200 (~120hp @6000) with PSRU & Swiss style silent pipe (i'm deaf), coolant radiator behind the...
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    Dreaming Up the Ultimate Light Fighter Inline

    Interesting discussion. Richard Finch in his book on converting auto engines for A/C, documented numerous outboard 2 stroke conversions, including a helicopter. With short stacks for mufflers the exhaust sound would be similar to a supercharged WW2 engine. V6s regularly run 200-250hp. Does...
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    Belt drive issue - belts and shaft pulley overheating/belts melting

    Looking at the images of your installation, the small pulley appears to have tall ridges between the valleys. Also the belt appears to have worn on the webbing between the belt Vs. I suggest getting a fresh belt and cutting it so that you may check the belt Vs are in contact and not the belt...
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    MOGAS in Fiberglass Fuel Tanks

    Hi all, Interesting topic and very informative. Thanks to those will real experiences and references. Automotive tanks are blow-moulded from polyethylene. In the early 2000's when I worked at Kautex, the extrusion machine was co-extruding 9 layers into one intergal substrate. Each layer had...
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    BMW motorcycle conversion

    hi delta, thanks, I've uploaded this CAD sketch. It looks adequate for an initial layout of an aircraft. I'll keep looking for a R1200, and if not will create a similar CAD model for reference.
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    BMW motorcycle conversion

    Hi all, does anyone have a CAD model of a R1100 or R1200 engine with/without a PSRU? thanks
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    Electronic Ignition causing propeller damage?

    hi all, this is a very interesting discussion around a unique issue. The switch from magnetos to electronic ignition is desirable for all good reasons on aircraft. For the engine/propeller manufacturers, it's not unexpected for them to hide behind their product history. However, it would be in...
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    Thoughts on Composite Strut Braced Wing...

    There is an article in EAA magazine (year /month unknown) describing the construction of a Wittman W-? with a fibreglass wing. If my memory is accurate, it was a copy of the LongEz in construction and slightly longer than standard Wittman span. I've tried to search the EAA site, but as I'm no...
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    Airfoil shaped fuselages?

    These blended fuselage designs are interesting development. The Concorde pilot who landed at Oshkosh in 1990 gave a presentation and described their landing procedures. What sticks in my mind was that the aircraft landed at 13 degrees AOA. If it deviated by greater than 0.1 degree it would be a...
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