AerodromeRC Forum - an albatros for hazel

Desert Flyer

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Re: an albatros for hazel
Reply #30 - Mar 5^th, 2010, 11:25pm

Thats exactly what I did on F7 - see you didn't need any pictures! I think my control horn was shorter so I don't get as much rudder movement as I like. I haven't tried a knife edge - but rudder is fine for most stuff. Stall turns are exceptable, but have never entered one going straight up as we do with sport models. Can't get most of these WWWI's to go straight up.
Looks like your doing another terrific build - the Bristol is fantastic.
-----Bert

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nytjadens Senior Member Offline Head In The Clouds! Posts: 260	Re: an albatros for hazel Reply #31 - Mar 5^th, 2010, 11:52pm thanks bert! question, did you use foam in the tail end or stringers? just cut a couple of cardboard templates to position f7 and i think its going to work. ST
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Desert Flyer Senior Member Offline Posts: 468 Palm Desert, California	Re: an albatros for hazel Reply #32 - Mar 6^th, 2010, 4:34am No foam. Seems to be sheet balsa, can't remember how it was done.
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nytjadens

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Re: an albatros for hazel
Reply #33 - Mar 6^th, 2010, 4:17pm

f7 glued in place using cardboard templates to position it. next is the 1/8 inch dowel and deciding how to shape the fuselage tail. i am thinking foam fore and aft of the rudder control horn. it will help secure the guide tubes for the control lines.

kay do you think it would be a bad idea to reposition one or two of the ribs in the rudder to a more scale position? just a thought.

ST

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Bengtson

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Re: an albatros for hazel
Reply #34 - Mar 6^th, 2010, 9:21pm

What I would suggest about the rudder for scale features is to use 1/8"x1/16" sticks and mimic the original in all three locations. That is the way I would design it today anyway. The DIII kit is a rather old design and I wasn't as interested in scale accuracy back in 2002. Gosh has it been that long ago? Almost eight years...

Kay

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"No, they are not toys, they are flying works of art!"

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Carter Full Member Offline 439 sq in Posts: 86	Re: an albatros for hazel Reply #35 - Mar 8^th, 2010, 9:12pm Do it--scale.
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nytjadens

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Re: an albatros for hazel
Reply #36 - Mar 8^th, 2010, 9:59pm

oh yes! already got my feet wet, might as well get soaked. working on the foam fill in the tail today, its looking good. next is figuring out the elevator and rudder control line runs. its going to be tight back there and the upper lines to the elevator could interfere with the rudder. scale exit points are pretty far aft. pictures soon.

ST

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nytjadens Senior Member Offline Head In The Clouds! Posts: 260	Re: an albatros for hazel Reply #37 - Mar 9^th, 2010, 2:01am almost done shaping the tail section of the fuselage. the foam adds a surprising amount of rigidity with very little weight. i think it will also be a good foundation for the control line guide tubes. ST
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nytjadens Senior Member Offline Head In The Clouds! Posts: 260	Re: an albatros for hazel Reply #38 - Mar 9^th, 2010, 2:02am ST
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Carter Full Member Offline 439 sq in Posts: 86	Re: an albatros for hazel Reply #39 - Mar 9^th, 2010, 9:24pm Maybe I missed something. What is the foam supposed to do?
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nytjadens Senior Member Offline Head In The Clouds! Posts: 260	Re: an albatros for hazel Reply #40 - Mar 10^th, 2010, 2:01am Carter wrote on Mar 9^th, 2010, 9:24pm: What is the foam supposed to do? im not sure, kay? ST
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Bengtson

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Re: an albatros for hazel
Reply #41 - Mar 10^th, 2010, 2:46pm

The foam is a lightweight way of finishing the tail section instead of balsa or continuing the stringers back to the end of the fuselage. It gives a nice solid look to the tail with minimal weight. Initially, when the model was designed, the intent was to make a model that was easy to build and stand off scale. As such, it was felt that most builders would not sheet the back of the fuselage but as it happens, most do. The gentle curve on the top of the fuselage in this area is best made by simply sanding foam to shape. Some used soft balsa which works but one has to be careful not to add too much weight back there.

Kay

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"No, they are not toys, they are flying works of art!"

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Randell New Member Offline I Love Scale Modeling! Posts: 8 Taos, NM	Re: an albatros for hazel Reply #42 - Mar 10^th, 2010, 3:32pm The DIII is coming along nicely! I have a stupid question. I know a lot of builders use blue and pink foam. But, what kind of foam is it and where do you buy it? I live far from the big city and my favorite Hobby Store closed up (new owners mismanaged). Curtis
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Bengtson Board Moderator Offline Designing on the edge Posts: 2408 Monterey CA	Re: an albatros for hazel Reply #43 - Mar 10^th, 2010, 3:38pm It is home insulating foam available at home improvement stores like Home Depot. Kay
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Jecull

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Re: an albatros for hazel
Reply #44 - Mar 10^th, 2010, 5:17pm

Looking good, Steve! The internal control will add quite a lot to the scale look. The change of structure in the rudder is worth it, I believe, especially if it's going to be white.

Forming ply or balsa over the D III tail cone shouldn't be too difficult, as Kay mentioned, but I think off & on abut whether or not I should have used foam on my D V. *shrugs* We shall see...

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-Jim
"Turnin' trees into flyin' art for over 30 years, mon!"

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