Author Topic: Flights of Fancy  (Read 24540 times)

TheLurker

  • Goes well with magnolia.
Re: Flights of Fancy
« Reply #275 on: September 16, 2020, 09:09:09 pm »
Saving electrons. VMC Bird Dog WIP
Τα πιο όμορφα ταξίδια γίνονται με τις δικές μας δυνάμεις - Φίλοι του Ποδήλατου

ElyDave

  • Royal and Ancient Polar Bear Society member 263583
Re: Flights of Fancy
« Reply #276 on: September 16, 2020, 09:16:12 pm »
I'm going slow due to masses of work keeping me brain dead in the evenings, but with the dansing programme on the beeb restarting, I predict an uptick in balsa fettling.

Fuselage structure mostly done, with front and rear stringers. Managed to get out of sequence and fit bottom stringers ahead of the undercarriage and F5A, but I can get them in with a bit of fiddling.  U/C bending went surprisingly well, will post a pic sometime.  Only made one error, tried to unbend it and snapped the wire.  Good learning curve, remaining wire was sufficient and I paid attention. Just need to trim the legs for the wheel fit.
“Procrastination is the thief of time, collar him.” –Charles Dickens

TheLurker

  • Goes well with magnolia.
Re: Flights of Fancy
« Reply #277 on: September 17, 2020, 05:45:21 am »
ElyDave >I'm going slow due to masses of work keeping me brain dead in the evenings...

Likewise and the brain fog lead me to screw up the bottom line of the anti-glare panel which means it's wrong for 62620, but I'm consoling myself that there are examples out there which do have it as I've done it.  Just not 62620, grrrr.

ElyDave>... but with the dansing programme on the beeb restarting...

Lovely isn't it?  Two (or more) hours guaranteed to be absolutely free of interruption every Sat. for far more important things. :)

ElyDave> Just need to trim the legs for the wheel fit.

Don't do that until after you've fitted the wheels.  If you use an insulation sleeve to hold the wheel in place it's far easier to leave the UC leg overlong, fit the wheel, slide a longish sleeve into place, cut to length and then a put tiny dod of glue (epoxy, CA) on the cut end. Make sure the sleeve _is_ glued in place or you may find yourself having to make another wheel (or wheels) to replace any that get lost on landing in long grass.  Yes, that is the voice of (bitter) experience.

If you've yet to sand the wheels to profile it's worth knowing that the x-sect shown on the plan leaves you with quite a "square" looking wheel.  The tyres on the L-19/O-1 were chunky, but not _that_ chunky so a bit more of a curve than shown is required.  It's not obvious it's "wrong" until after you've painted the wheels.  DAHIKT.
Τα πιο όμορφα ταξίδια γίνονται με τις δικές μας δυνάμεις - Φίλοι του Ποδήλατου

TheLurker

  • Goes well with magnolia.
Re: Flights of Fancy
« Reply #278 on: September 20, 2020, 05:34:20 pm »
Sorry, but ICBA to log in to imgbb & upload pics. Moar Bird Dog WIP
Τα πιο όμορφα ταξίδια γίνονται με τις δικές μας δυνάμεις - Φίλοι του Ποδήλατου

TheLurker

  • Goes well with magnolia.
Re: Flights of Fancy
« Reply #279 on: September 25, 2020, 10:06:10 pm »
Done all but five minutes of titivating. A little bit of paint on the underside of the nose and some matt Al. on the insulation sleeves holding the wheels on.

At least one glaring error in the decoration, *shrugs*.  Combination of tiredness and stupidity.  And, as is traditional for me, I have finished it just as the weather turns foul for the foreseeable.

Weight sans rubber 28.91g
       with        32.66
So throw in a motor peg and it'll be 33g for everyday.





Τα πιο όμορφα ταξίδια γίνονται με τις δικές μας δυνάμεις - Φίλοι του Ποδήλατου

andytheflyer

  • Andytheex-flyer.....
Re: Flights of Fancy
« Reply #280 on: September 26, 2020, 04:10:26 pm »
That's very nice TL.  I'd be proud of that. Hope you get the right weather for a maiden shortly.

TheLurker

  • Goes well with magnolia.
Re: Flights of Fancy
« Reply #281 on: September 27, 2020, 09:41:08 am »
Quote from: andytheflyer
That's very nice TL.  I'd be proud of that. Hope you get the right weather for a maiden shortly.
Ta.  Tomorrow and Tuesday are looking promising at the moment and the grass on the "aerodrome" is a good 6" to 8" long now
Τα πιο όμορφα ταξίδια γίνονται με τις δικές μας δυνάμεις - Φίλοι του Ποδήλατου

TheLurker

  • Goes well with magnolia.
Re: Flights of Fancy
« Reply #282 on: September 29, 2020, 09:15:16 pm »
Bird Dog.  Got the glide sorted out, but power trials were not great.  Even on only 100 or so turns (about 1/8 of "safe" maximum) using the kit rubber (2 strands of 3/16") getting a stall.  Come the next calm am going to try with a spare 4 strand 3/32" motor.  Only had about half an hour this evening before testing curtailed by poor light & the dew setting in.


Thanks for the info! I hope WW comes back  with their full range.

This may already be well known, but I didn't know until yesterday that VMC have taken on West Wings' range of products.

This month's BMFA News, p49.  It's a throwaway comment in an, interesting, article about VMC's Balsa Basics RC Spitfire.
Τα πιο όμορφα ταξίδια γίνονται με τις δικές μας δυνάμεις - Φίλοι του Ποδήλατου

ElyDave

  • Royal and Ancient Polar Bear Society member 263583
Re: Flights of Fancy
« Reply #283 on: September 29, 2020, 09:23:11 pm »
Slow and steady progress in the flatlands. 

- Air intake lamination completed
- Nose block sanded to profile - a curious mix of art and engineering.  Will take another look after putting it aside for a day or so, just to make sure I'm happy with it
- U/C wires fitted, tail wheel fitted
- Front of fuselage planked
- wheels sanded to shape

Will post photos eventually.
“Procrastination is the thief of time, collar him.” –Charles Dickens

TheLurker

  • Goes well with magnolia.
Re: Flights of Fancy
« Reply #284 on: October 05, 2020, 10:05:20 pm »
If your stocks of balsa are running low *now* would be a *very* good time to restock.  We're in for steep price rises, as much as twice current, quite possibly with low availability thrown in.  Seems the wind turbine industry is hoovering up vast quantities of balsa for blade cores. 
Τα πιο όμορφα ταξίδια γίνονται με τις δικές μας δυνάμεις - Φίλοι του Ποδήλατου

TheLurker

  • Goes well with magnolia.
Re: Flights of Fancy
« Reply #285 on: October 17, 2020, 06:03:05 pm »
Bit more repair work, this time in the Chiribiri No. 5.   Have to say I was quite expecting this, the combination of bamboo & basswood in v. thin sections did seem a bit... delicate.  Should be a straight-forward repair, the trick will be working out how to improve strength without adding undue weight.  At the moment I'm thinking of either cyano impregnated paper strapping or v. fine wire or thread bindings.



However the Bird Dog is now part trimmed, up to 300 turns which is good for a circuit and a bit.  On which subject; Dave, the 3/16 kit rubber proved too beefy for mine.  More than 100 turns saw almost instant stall from hand launch.  I'm currently using a 4 strand 3/32" motor.  As far as nose weight goes mine need a big old lump, but my kit wood was pretty heavy and I've got the hinged rudder so perhaps to be expected.  There were a couple of other Bird Dogs at today's meet and there was quite a variation in nose weight from about the same as mine to perhaps 1/4 of what I'm using.  Mine also needs a 1/16" shim for downthrust and about 1/32" right thrust on top of the 2 degrees I built in.  As I managed to bend the prop. shaft - nasty stall into hard floor - I'm going to reseat the nose button to build this in.  Not sure when I'll be able to continue trimming it, but will post an update when I do to try and give you a head start on it.
Τα πιο όμορφα ταξίδια γίνονται με τις δικές μας δυνάμεις - Φίλοι του Ποδήλατου

ElyDave

  • Royal and Ancient Polar Bear Society member 263583
Re: Flights of Fancy
« Reply #286 on: October 17, 2020, 08:19:34 pm »
Total thread bomb with photos

Construction progress on Bird Dog, plus repair on Veron glider - a bit scrappy, but that v-section is difficult to get the tension.

U/C - managed to snap the wire once, but had enough to get it right second time.  Hopefully have enough for the struts inside the canopy as well.



Fuselage and wings






And the glider



And a top tip for weighting - if you are a single malt drinker (reasonable guess?) or have the occaisional good bottle of wine, the lead foil capsules aare great nose weights, easy to fold flat, cut, stick to things etc.


Today - painted nose block Tamiya Flat Green, wheels and anti glare panel Humbrol Matt Black. Pored over the instructions for the various cut-out sections prior to starting coverage and assembly
“Procrastination is the thief of time, collar him.” –Charles Dickens

andytheflyer

  • Andytheex-flyer.....
Re: Flights of Fancy
« Reply #287 on: October 17, 2020, 08:53:13 pm »
That's looking very nice, well done.  Are you TL in disguise?

TheLurker

  • Goes well with magnolia.
Re: Flights of Fancy
« Reply #288 on: October 17, 2020, 09:08:27 pm »
Quote from: andytheflyer
That's looking very nice, well done.
Andy beat me to the punch.  He's right, the BD is looking good and the wing repair looks absolutely fine.  FWIW I find that repaired models get more flights in than pristine, off the bench ones because, like that first scratch on a brand new bike, you become a little less precious about it.

> ... if you are a single malt drinker (reasonable guess?) ...
As it happens I am, but I only get through a couple or three bottles a year so that's not the most convenient source of ballasting... however ... I do have a couple of large offcuts of roofing lead that can be hammered, cut and or smelted* into convenient shapes.

> ...thread bomb...
You can never have too many pictures of aeroplanes.  Toy or otherwise.  :)

*H&S? Wossat then? 
Τα πιο όμορφα ταξίδια γίνονται με τις δικές μας δυνάμεις - Φίλοι του Ποδήλατου

ElyDave

  • Royal and Ancient Polar Bear Society member 263583
Re: Flights of Fancy
« Reply #289 on: October 17, 2020, 09:20:23 pm »
H&S - that's for the workplace.  I have lost count of the times Mrs ED has retorted "call yourself an H&S man?"

In my defence, it's been a while since I've attended minor injuries.
“Procrastination is the thief of time, collar him.” –Charles Dickens

andytheflyer

  • Andytheex-flyer.....
Re: Flights of Fancy
« Reply #290 on: October 18, 2020, 08:43:25 am »
Ah!Is this a common factor - model aeroplane building and malt whisky?

I'm an Islands man, particularly Islay.  Comes from geology field trips as a student to the Hebrides and the Scottish NW Foreland.  These rocks are not part of the UK y'know.

Malt - as seaweedy, smoky and peaty as possible please.  Laphroaig, Ardbeg, Port Charlotte.  None of those smooth, refined Highland potions.  Need to be just like me.  Rough and ready, uncultured.

And Grouse for everyday.  Well, not everyday, but you know what I mean.