Recent Attachments for chara
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found a spinner that fits ok. not 100% scale but that's fine for me
weight w/o battery is 195g (6,8oz)
overlay with a Fw190 side view drawing. the model's tail is a bit bigger than the original. I also moved the wings slightly aft to be able to balance her more easily. otherwise I think the shapes are captured quite well.
finished the motor mount
just enough space for the electronics
...goes through fuselage
elevator cable routing...
servos installed. it will be again two flaperon servos and elevator. i've added some blisters from depron for scale looks
the wings are glued to the fuselage. the motor mount option is settled now
view inside the electronics compartment. the hole will guide the control cable.
detail of the elevator. an internal cable/sleeve will be used for actuation
access hatch open. the dotted lines indicate the position of the two formers.
access hatch was cut along the canopy lines
still haven't decided what motor to use and how to mount. The original plywood firewall no just serves as structural stabilizer.
preparing the motor mount
comparison with the Bf109. I screwed up the scaling of my drawings a bit and the 190 came out slightly smaller that intended (should have come out a bit bigger than the 109)... but who cares...
main parts taped together
the wing halves are joined together by gluing them to a triangle balsa profile. simple way to create dihedral
wing is 6mm depron. undercambered plate profile. good enough for the purpose of some relaxed after work flying
the middle piece gives good stability and helps to shape the fuselage
tail feathers assembled
cutting off the vertical stabilizer to allow the horizontal stab to be glued in...
I decided to go with the "simple canopy" variant. only the wind shield will be a separate part.
tail is sandwitched between the rear end of the fuselage halves.
middle piece with two formers will add stability
a former in the nose is going to give shape
Fuselage halves taped together for test fit
all it takes to make a nice little Fw190
first set of plans (had some flaws that I needed to correct)
I've also added some depron pieces to mimic engine exhausts, air scoops and blisters of the G model. that should be enough detailing for a model that's going to crash sooner or later ;-) :p
the "decals" are just print outs that I have attached with some adhesive spray. worked really nicely
amazing how much an airbrush can add to the looks of a model
starting the decorations
side view. I've also made a light depron spinner (the 109 has a huge spinner!) and also my own folding prop adapter. prop savers don't work here very well the engine firewall is made of plywood and gives additional support to the fuselage skin.
here is the rear former (also just eyeballed) and the "floor" (what's the technical english term far that?)
cut open a large access door
front former with cut out for cables. does not need to be 100% tight fit just enough to provide stability (yes i'm a lazy dog)
to stiffen the fuselage i've added a former in the front and one in the rear part of the fuselage. between them is a 6mm depron "floor"
the rudder was cut out "just in case".it's actually not needed. but you can use it as a stationary yaw trim surface if you find out that she flies not straight.
starts to look like an airplane
pretty simple layout. wings and tail feathers are 6mm depron
the profile is just a slightly undercambered section. that gives lot's of lift for this small wing. wing halves are joined together on a wedge shaped piece of balsa (TE sock). that gives a nice dihedral angle
wings have large span flaperons
nice and round nose section. the cross sections naturally blend over to more box like near the cockpit.
cockpit canopy made of 3mm depron as well
fuselage rolled and taped together. tail attched
I left an opening in the nose for cooling air
enough space to hide all the equipment inside the fuselage
fuselage top opens for access to servos and electronics
fr4nk1yn's beautiful model
a variation: Retro style BMR with elliptic wings
note ventilation slit below the canopy front shield
pods are flat for more simplicity
canopy is hinged on the side for more convenient access
same dimensions as the original
then just hot glue the short end to the control horn, which is a piece of foam hot glued to the control surfce. It works best with bamboo skewers, but also with paper clip wire as shown here.
bend it a fev times to make a nice articulation
wrap duct tape around the joint. 1-2 layers is enough. cut off the rest
long end goes to servo, short end to control surface horn.
RW servo controls aileron, LW servo controls elevator
...and a close up
hmmm... looks not right yet. I think she needs bigger calibre cannons :)
nose detail. styrofoam sandwich that was cut and later sanded into shape
linkage and torque rods moved to the bottom side of the wing
servos moved backward
not much room left. Think you can't make the fuselage any smaller for these components.
the internals are layed out just like the original Tachyon, which worked pretty well.
torque rods - no compromises for the sake of slickness :)
...but in the last minute I decided to take the CD-ROM motor
I planned to use a medium sized outrunner with a big spinner in front....
it's pretty small ... about 53 cm wing span
new slicker tail section. note integrated elevator linkage
wing bottom is about 2/3 chord depron folded at le LE. the top layer TE forms the aileron.
the tail boom is a simple bals stick. I've made good experience with such kind of tail design.
enough space to snuggly fit in all the rc gear. battery hatch in the front part.
the wing is attached with rubber bands for more convenient transportation
Internals: elevator servo and aileron servo with experimental likage
the edf was going to get an extra nacelle for better looks. but now that I lost the fan... :mad:
not much damage. the cover came loose and the nose got wrinkled a bit. styrofoam and tape is a great combination
...note how camera perspective can fool the eye when comparing sizes
underside to be decorated after maiden fligt... :) 2 aileron servos will enable flaperon mixing
comparison flat and full fuse
dro the trailing edges a few degrees for better glide performance
This was today's fleet.... It's a good reference to compare the scale of the BMR with other material
red marking shows approximate CG location
new nose section
The battery hatch is on the bottom side. pretty crowded place :)
I opened the permanent top cover for demonstration purposes.
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