Thread: Discussion Graupner Canary
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Old May 20, 2007, 03:31 PM
Markus Meier is offline
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Bern, Switzerland
Joined Feb 2006
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Graupner Canary

Hi there

after some serious problems with (too) fast airplanes (build...fly...glitches...crash...) i wanted to build something slow and relaxing. On one of my stops at the LHS i saw a box that looked very interesting: a plane called CANARY from graupner.

Here are my thoughts about this plane.

the plane:
- canard style
- wing span 1000mm/39"
- lenght 600mm/23.6"
- weight 300gr/10.5oz and up
- R/E/T
- balsa and ply
- some plastic parts (wing joiner, base for the rudders, ...)
- build for a Speed 300 motor and a 6 cell NIMH
- the rudders are at the end of both wings and are operated with a pull system (not pull-pull, only pull)
- only the rudder on the inner side of the turn moves, the rudders are forced back to neutral with a piece of push rod tube

equipment used:
- graupner kit
- hacker style A20-34S bl motor
- gws 8x4 prop
- gws pico servos
- gws 15A esc
- corona 4ch rx
- dualsky 2s1p 1000mAh lipo

kit:
- very nice quality (this is my 3rd kit from graupner and they were all really good quality)
- all cnc cut pieces
- good quality balsa and a lot of light ply to strengthen things
- good and understandable plan (written and drawn)
- you do not need any parts (like horns, linkage etc), it is all in the kit (except for the electronics)
- there is even a sanding block and 2 pieces of sanding paper included

build:
- all parts fit together very nicely and without further work
- i used (too much) ca and some kicker, 5min epoxy for the cowl and the landing gear
- the build was finished after 5 hours
- all the electronics and the linkage took another hour
- my plane ended up at 280gr (about 10oz) without lipo (52gr/1.85oz)
- the plane could easily be build to 200gr without landing gear, cf rods, paint and light electronics, but 280gr are no problem in flight, so why build lighter??

modifications of the original design/plan:
- added landing gear, i thought the motor was too low in the fuse for a belly lander (no ROG because the prop is too big)
- used bl motor, had to cut a hole into the cowl to make space for the cables
- did not like the idea of the rudder thread hanging under the wing, secured by just 2 pieces of push rod tube, i used a tube over the full length of the wing
- i had to put a 2mm cf rod to the TE of the wings, because one wing was warped after painting
- no spinner, just a rubber band prop saver

flight:
- only one word: WOW, not just for the spectators, but also for the pilot
- needs some DOWN elevator for a good start (elevator down to LIFT the plane up, it is a canard!)
- i wondered about the speed of the canary, because there seemes to be not much wing area for a weight of 350gr
- the canary flies stable from slow to "fast-enough-for-a-soccer-field"
- faster than a gws slow stick, about the speed level of a gws beaver (stock)
- looks really elegant in the air
- it is quite a good floater
- lands with motor off, almost hands off

conclusion:
- as i said: WOW
- go and get it ...

pros:
- nice kit
- easy to build
- something different
- lots of room inside for all kind of equipment (from a speed 280 brushed to a 100watt brushless, from 3.6gr to 12gr servos ...)
- flies very stable
- can be flown (and landed ) on a soccer field

cons:
- no landing gear (easy to do)
- cowl must be modified for BL motors (easy to do)
- elevator servo is burried in the plane, must be cut out in case of failure
- one wing was warped after painting (my fault)

things to think about:
- this is a canard style plane, so DOWN elevator LIFTS the plane
- no ROG, because my prop is too big, use a different motor/smaller prop

Greetings Markus

P.S. if you want to see a video (not mine): flight and crash
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Last edited by Markus Meier; May 20, 2007 at 03:42 PM.
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