Scale Modifications to the 1/3 Scale Balsa USA Sopwith Pup
#152
As far as aileron travel, the full scale plans call for 6" up travel minimum. and ready for this? down travel is 10"!
Nature of the undercambered airfoil. Adverse yaw is intense so the rudder gets used a ton!
Nature of the undercambered airfoil. Adverse yaw is intense so the rudder gets used a ton!
#154
Join Date: Apr 2006
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I purchased an inexpensive throw meter from Hobby King. You may want to consider getting one. I would say 25-30 degrees would be a good starting point for any model. My DX-8 has triple rates so I have it set for 100-80-60 in case I have to soften things up in a hurry.
http://www.hobbyking.com/hobbyking/s...arehouse_.html
http://www.hobbyking.com/hobbyking/s...arehouse_.html
#158
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Most of these biplanes fly best when using differential to avoid adverse yaw and high speed stalls. I generally make down 50% of up and work from there. So far, so good.
#160
Unfortunately the nature of the beast with a closed aileron cable system and undercambered airfoils is reverse differential. with good rudder useage, the adverse yaw isn't much of a factor.
My Hangar 9 Camel is much the same way.
Unfortunately it is almost impossible to get the type of differential we're used to on this type of setup.
My Hangar 9 Camel is much the same way.
Unfortunately it is almost impossible to get the type of differential we're used to on this type of setup.
#161
Looking good. But don't forget that the kit has the fin flat on the stab. The real plane has it above. I used fiberglass arrow shafts to get this done on mine. JimB
#163
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I'm sorry I didn't see your PM earlier.
Andy
#164
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Hey U Guiz! Come check out my latest rebuild thread
http://www.rcuniverse.com/forum/cras...l#post11969109
http://www.rcuniverse.com/forum/cras...l#post11969109
#165
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Hey U Guiz! Come check out my latest rebuild thread
http://www.rcuniverse.com/forum/cras...l#post11969109
http://www.rcuniverse.com/forum/cras...l#post11969109
#166
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I've had to put this thread on hold. We sold our house and will be moving in a couple of weeks so I'm busy packing up my shop. It will be at least three or four months before I can get back to working on the Pup. I'll let everyone know once I'm back up and running.
Andy
Andy
#167
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We are in the new (much smaller) place. I am starting to build shelves in the garage in hopes that I can clear enough room to start working on my Pup again. I'm thinking that it will probably be mid summer before I am back at it. I just wanted to give a quick update.
Andy
Andy