Concorde Speedbird
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Everything posted by Concorde Speedbird
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This could be a long one... I've done a blindfold-scale Spitfire and I decided to do a Mustang next, preferably larger and more accurate. The Brian Taylor plan depicts a fairly complicated but very accurate model, and it is the latter that has drawn me to it. I got the plans (2 sets) and parts from Sarik. Subject is Ferocious Frankie because I used to see it frequently when growing up in Suffolk (annoyingly the aeroplane has just moved to Turkey, would have liked to get more pictures of it). I'm going to do the best I can and see how much detail I can (or can be bothered) to add. If it goes really well, who knows, I may even enter some stand off competitions. But that is not the current plan. I'm not starting until the Swift is done, but that won't be long and I thought an early open would stem some discussion. Anyway, pictures: Retracts are from the USA (rather apt) because Unitracts seem to have disappeared. Tested them and they work well. The legs sit in the scale position, but the mounts need to be redesigned to take these. Annoyingly the motors will be visible in the wheel wells, first scale blemish! Looking forwards to getting this build underway, I shall start with the wing first. The main undercarriage with separately hinged doors and hiding the aileron actuators are the first couple of challenges! Jacob
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Sides sanded and central support added. Central former added (1/16 for lightness). And the last bit of fuselage sheeting... on the wing.
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Some more pre-dinner work I attached the aft former. Cleverly, I didn't cut the curve making it much more difficult and precarious to match the shape... That's picture 200 by the way (there are fewer in the album because I haven't uploaded some). I then shaped it, which wasn't too bad. Very much full span ailerons! The red stains are blood (don't worry it wasn't a bad cut). More this evening if I can be bothered (got a stupid cold). Jacob
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WOT4 Becomes Racing Car
Concorde Speedbird replied to Biggles' Elder Brother - Moderator's topic in Incident Reports
I've noticed with my Taranis that if you don't set rates on all positions of a three position switch, then one position cuts off all control from that channel. Not suggesting this is the case, but it is an important point with open source Tx's. So you had sufficient airspeed (presumably) but insufficient angle of attack to fly. Wot 4s have slightly semi-symmetrical wing sections which suggests there may have been a slight bit of down elevator/pitch down. My Wot 4s have always got off the ground incredibly quickly, further providing evidence of this. Ground conditions- grass length, dampness- make a huge difference I have noticed, as others have mentioned. Is the thrustline correct? I am not sure just the C of G moving slightly forwards could create enough stability in pitch to remove all the pitch authority, presuming you run quite high rates like I do on Foss aeroplanes, and I would have thought a nose over would occur is the C of G was this far forwards. Could you see if the elevator was responding during the take off roll? I often glance it when I take off. Jacob -
Only one picture today. The under fuselage section underneath the wing is quite a complicated part, so I am taking it slowly. Should get it done tomorrow.
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Just ordered some Solartex, trim and clearcoat for the last time. The standard solarfilm would sag over time and temperature but I really liked the supershrink polyester, and obviously solartex is excellent.
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This is a great shame. The hobby is certainly changing significantly.
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Thank you very much Tom! Firstly the tailplane/fin blocks Then the other half of the underside skin. Just the cowl, canopy area, rudder and elevators needed now.
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Next former And the next one As shown on the plan (see previous post) a curve is formed: Some nice light 1/16" is used to form the double curve. I decided to let this half set properly before attempting the second half tomorrow. Once this is done, the section beneath the wing can be built. On track to be covering this weekend!
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