fangin.com RC, photos & tech

19Feb/072

Landing Gear, Tail Wheel, Ailerons and Wings



bad_boy_radio_control 077, originally uploaded by mattmc.

Throttle servo is in. I ended up taking the throttle servo apart so I could fit it through the fuse easier and not have to enlarge the hole too much.
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Landing gear securely attached. Wheels will go on at a later stage.
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Check out that profile.
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Tail Wheel assembly is quite straight forward. Three self-tappers, some CA to firm up the holes, some Epoxy in the hole where the strut goes in and you're done.
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I had to enlarge the holes slightly in the wing for the servos to fit with the rubber grommets and all. Don't make the mistake I almost did when I assumed the ply mounting rails would be directly beneath the balsa sheeting. I thought "great this is easy", screwed one servo mount screw into the wing but got suspicious at how easy it went in. Considering it was only going through balsa sheeting I wasn't surprised. Imagine how long the aileron servos would last only mounted to the sheeting.
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Aileron servo mounted snugly in the wing.
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Bottom of the aileron servo. The carbon fibre wing tube is visible on the right.
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The wings are pretty straight forward to mount. Just take it easy and don't apply too much force trying to slide them over the wing tube. I hade to shape the rear hole slightly to get a snug fit for the rear guide.
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Here's a tip. If you have to enlarge the aileron servo openings, don't forget to clean the balsa dust out of the wing. It'll be much easier now than when it falls down into the already covered wing. Not a big deal, I'll get it out. It just would've been easier to get out earlier. What's that saying about haste and waste.....
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The progress so far (Monday night). Next... stabiliser. Reckon it'll be ready for this weekend?
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17Feb/075

Bad Boy v2 – Step 1 – Tail Servos

First things first. The blank fuselage ready for the elevator and rudder servos. I removed the covering with a soldering iron. The iron melts the covering as a nice seal around the edges without any jagged edges you might get by cutting with a knife.

Fuse as it comes out of the box.
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Servo holes before removing the covering.
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Servo holes with covering removed.
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I covered the lead extension joins with heatshrink as recommended in the manual but found it impossible to fit the join through the small gap provided. I had to cut a small part of the balsa away to get it through. The cut isn't visible once the servos are in so appearance isn't compromised. The thing I don't get is the small cutout on the engine end of the servo cutout. The manual says to mount the servos with the servo arms closest to the control surfaces hence the lead also comes out that end. The cutout at the other end doesn't help fit them at all or with the leads running into the fuse.

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I found it best to get the first lead connector into the fuse. Before you pull it all the way through, insert the second connector straight after the first then pull them both through at the same time. I found if you pulled one lead all the way through then try to pull the second through it would get stuck on the extension joiner in the middle of the fuse.

After some stuffing around, the servos fit snugly in the fuse with the leads out the front holes.
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Step 1 complete.
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Next step - fitting the throttle servo.

14Feb/071

Bad Boy v2 – Precision Aerobatics



bad_boy_radio_control 032, originally uploaded by mattmc.

The Bad BoyV2 arrived in the post today from Precision Aerobatics. Pretty quick delivery time seeing as I rang up midday on Monday when I noticed a small notice on the PA website saying they were going to be closed for three days this week. I was really hoping to make some progress on the build this weekend so I rang up straight away. The lady on the phone said she'd try to ship it today but couldn't make any promises. A day and a bit later (wednesday morning) and a small white cardboard box has made it all the way from NSW to Vic in good shape. Thanks lady on the phone!

Total cost of the kit was a little over $255 including postage, insuance, Carbon Fibre servo arms and metal links. Considering I spent close to that on a Great Planes Extra 300 kit (not ARF - and I still haven't finished building it) then it seems pretty good value. Someone else with probably 1000 times more practise at covering and finishing this model has done the hard, tedious work for me. I spend a few hours construction and hopefully she's in the air.

Packaging was excellent. All was well packed and arrived safe and sound through Aus Post. All the pieces were individually wrapped and packed. The horizontal and vertical stab surfaces are huge compared the the fixed surface area. Each wing felt feather light and build quality appears to be excellent. It's hard to match the accuracy of the cuts and joins on this type of model if you tried to scratch build.

I'll post more pictures as I progress through the build which considering the amount of work already done shouldn't take very long.

In the meantime, check out some video of it in action.

Here's some photos of unpacking the contents;

1. Clearly labelled "Bad BoyV2" box. A little crumpled on the outside but no damage on the inside.
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2. The fuselage - wrapped in it's own plastic covering.
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3. 8 Page Black & White Instructions
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4. All the relevant bits and pieces including aluminium undercarriage, fuel tank, carbon fibre wing tube. I splashed out and included the carbon fibre servo arms and metal links.
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Main wheels and tailwheel assembly.
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Carbon Fibre servo arm extensions
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The clear section is the elevator where the red section is fixed! It's huge!
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Check out the tiny section fixed to the fuselage compared to the size of the rudder!
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21Jan/070

Couple of projects on the go

extra 300s coming along
extra 300s closeupextra 300s

pulling an oldy but goody out of storage. The old Irvine 40 has seen better days so I'm making space for the OS46 AX. Should go like a rocket...
fun fly old engine fun fly waiting for radio and engine

more pictures here;
http://www.fangin.com/gallery/main.php?g2_itemId=496&g2_navId=x39ddaef4

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10Sep/060

P61 Black Widow at Lilydale

It was a bit blowy down at Lilydale today. Most were packed up by the time I got there. I did manage to get a couple of flights in. The first one went dead-stick because I'd left the throttle trim at zero so when I did a stall turn and cut the engine back to idle, I killed it. Had plenty of height and glided back easily to the field.
Later in the morning, someone came down with a scale P-61 Black Widow. It didn't get in the air while I was there. Here's some video of firing it up and taxi runs..



Here's a link to a torrent of this video. It's a 5MB xvid video hosted on my home machine so due to d'load limits, it's only up between midnight and midday. Someone please let me know if the link works. thanks.




Download p-61.avi

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6Sep/060

B29 scale model

goes for about 7 minutes but definitely worth the watch.


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1Aug/060

bi-plane take-off at Lilydale

I think this was it's maiden flight...

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19Jun/060

big, expensive mistake

apparently this cost $22,000 to build. bugger that...


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2Jun/060

extra 300 coming along

don't think I'll fly this one straight off the trainer - still a bit rusty and all.
a nice four stroke in this will do nicely I think.



extra_300s 003

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30Apr/060

she flew

a moment of embarrassment when the front wheel fell of taxiing for the first take off but after a quick tightening off the collar, away it went.
first flight was fairly uneventful - bit of right aileron and rudder trim. I flew some circuits till it went dead stick (engine died). The instructor glided back in without a problem and landed it not 10 metres from where we stood.



Worldstar ARF 40

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