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  1. joe nelson

    Backwards?

    The early helos flew from the right set because the collective and throttle could be frictioned. This allowed the left hand to adjust radios or mixture. Some helicopter like the Enstroms are soloed from the left and I have no idea why. I have flown the F-28 Enstrom and it poses no problem...
  2. joe nelson

    Robinson R22

    Hey Birdy, Happy birthday!
  3. joe nelson

    Tom Kay, P-51 guy, where are you?

    OK, I'm shocked at the $120K to $175K to have a flying T-51. The Titan website says that you can build one for "well under $100K". That's painful to think about spending triple the kit cost to have a flying Mustang. My bubble is broken! I'll have to put my money back in the bank and cancel...
  4. joe nelson

    p-51 3/4 scale replica

    How far along is your project?
  5. joe nelson

    Tandem rotor gyroplane

    Ken, It isn't full scale yet. It is about 40% scale and I choose this size because of the problems with the first models. I found the the rotor blades in the first models acted differently from a full scale gyro. It took me a year and a half to find this out. I found that the blade reflex...
  6. joe nelson

    p-51 3/4 scale replica

    You are using a Chevy LS3 engine...WOW! My son-in-law says, that it makes 430 HP stock and he's seen 650 on modified ones. You'll be cruising at your red line and climbing vertically! With a 1850 pound gross weight and if you get 4 pounds of thrust per horsepower that's a 1/1 thrust ratio...
  7. joe nelson

    p-51 3/4 scale replica

    It looks like the nose is longer so does this change the CG much? I guess that you can carry a fat guy in the back seat now...lol. Man, that's beautiful work. Is all the engine work done by Bill or does John have input? I wished that I could find time to become a "engineholic or gearhead."
  8. joe nelson

    p-51 3/4 scale replica

    Man! Those guys are prolific! I think they are great at working with the new power plants.
  9. joe nelson

    Tandem rotor gyroplane

    It is a follower for collective. I have incorporated the swash plate mount and the follower into one part. It rides along the mast on HMWP bearings in an attempt to keep things cheap and simple. The reason for not posting is when you change the scale you have to start over completely. There...
  10. joe nelson

    Tandem rotor gyroplane

    Just a quick update. I'm now working on lost foam molds for parts that I can't find anywhere else. Pouring aluminum is new to me so I'm going slow.
  11. joe nelson

    p-51 3/4 scale replica

    TXFlyGuy, I have been following the T-51s project for years. Looking closely at the pictures it looks like Bill Koleno's Camel Smoker. The last I saw it, it had a Rotax engine in it so I guess it is now the testbed for new engines. I've heard rumors that Titan might be developing a T-40 to...
  12. joe nelson

    p-51 3/4 scale replica

    I looked at Titan's website and there will be a fly-in on August 6-8 at the Geneva airport. That about 5 hours north of me and I hope to get there to see some Mustangs.
  13. joe nelson

    Basic Gyrocopter Design Question - Rotor direction

    To answer your question I am assuming that the blades are without washout and are not a symmetrical airfoil. I think, there would be no difference since there is no torque being transmitted to the rotors. A gyro rotor blade has the opposite washout (twist) compared to a helicopter. This...
  14. joe nelson

    p-51 3/4 scale replica

    Scott, How's your F-6 going? I definitely want to see a finished bird. I'm rapped up in my project right now or I would be looking to get a replica of some type.
  15. joe nelson

    What do you think of this workbench?

    Gotta love those Chinooks! I was alway interested in them and never knew how much difference there was between single rotor helos and tandems.
  16. joe nelson

    position of tail to main rotor.

    What is your requirements for the tail rotor? There are many factors such as weight and position on your tail boom to consider.
  17. joe nelson

    p-51 3/4 scale replica

    I would like to visit Titan's factory to see their operation. It's about five hours north of here so it'll be a couple of day trip. I have heard that Titan has a new engine in development that will make the V-8 look weak!
  18. joe nelson

    What do you think of this workbench?

    Why bother with HF junk? Build it yourself to the exact dimension you require. I've built two from plywood. They weigh about 400 pounds each and are very square.
  19. joe nelson

    Going Postal with a Gyrocopter

    Gyros have come a long way in the last 20 years. Mostly, it has to do with the area of stability and most newer gyros have horizontal stabs which suppresses PIO and bunts. The idea of a towed trainers, in the dark ages, was there were no higher HP engines to carry the load of two people...
  20. joe nelson

    tandem helicopters

    Aboazeaz, The only thing that I can suggest to reduce drag is to increase the blade aspect ratio. The merit number is equal to the time that you are willing to invest in your blades' airfoil accuracy and it's smoothness not just an arbitrary number. Just remember the rotor blades are very...
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