Radio Control

Search in this set
Sort order
Sort order
✔ Default
✔ Photo title, A → Z
✔ Photo title, Z → A
✔ Date created, new → old
✔ Date created, old → new
✔ Date posted, new → old
✔ Date posted, old → new
✔ Rating score, high → low
✔ Rating score, low → high
✔ Visits, high → low
✔ Visits, low → high
Photo sizes
Photo sizes
✔ Square
✔ Thumbnail
✔ XXS - tiny
✔ XS - extra small
✔ S - small
✔ M - medium
✔ L - large
slideshow
return to normal view mode

Home / Radio Control 306

Search in this set

Radio Controlled models and such. Not much in this category just yet.

IMG 8941
IMG 8936
IMG 8937
IMG 8939
IMG 8935
IMG 8938
IMG 8933
IMG 8947
IMG 8942
IMG 8932
IMG 8931
IMG 8956
IMG 8955
136 3607
IMG 8943
IMG 8951
IMG 8934
IMG 8957
IMG 8959
IMG 8954
IMG 8945
132 3292
Coming together nicely now Tail piece is in, various tail-plane bits and bobs. The tail rotor blades are on the wrong way round here (and remained so for a while) until I realised I had the belt on the wrong way. I noticied this long before firing up the engine, thankfully.
IMG 8944
136 3620
IMG 8946
136 3608
132 3291
Tail rotor assembly The red coloured pulley is a two-piece item, a flange fits on one end, and it can go two ways round. The correct way si with the shorter end into the pulley, longer end outwards. Otherwise, as I discovered, there is about 2 to 3mm play in the tail rotor shaft. Not good.
IMG 8958
133 3303
Beastie so far
132 3295
Main drive wheel The belt goes back to the tail rotor. The grey spindle meshes with a drive wheel on the engine drive shaft. There is a shaft going up through these two wheels directly to the rotor hub.
136 3622
136 3619
136 3618
132 3280
Engine in the frame, closeup
132 3294
Tail rotor The orange material you can see through the hole is the belt. The blades twist together, in opposite directions. This is how you point the helicopter.
136 3621
136 3623
132 3287
Rotor head and flybar The fly bar, I think, ,ostly balances the main blades. They are on a single bar whose pitch alters with the cyclic, but not the collective (I think, lots of "I think"'s here!). The bar is supposed to be near-perfectly balanced otherwise it causes really nasty vibrations in the rest of the machine. Rememeber, this thing is a huge spinning top, really.
136 3609
136 3615
132 3279
Engine in the frame
137 3749
Fuel line arrangement This t-piece arrangement allows me to load/unload fuel to the tank without pulling the pipwork away from the engine. Just use the right fuel line clip to direct the flow to/from the tank. Similarly, the left clip allows me to inject after run oil without having to do fiddly stuff, or remove the engine.
136 3617
132 3281
Engine in the frame, other side
136 3610
136 3616
132 3285
Rotor head bearings At this point, I only assembled one end of this piece. The bearing set in the bag fit onto the shaft with a collection of washers, spacers, bolts, loctite and so on. It's all a bit busy. Particularly sicne I forgot to put in a supporting piece rigth in the centre to had to disassemble the thing.
133 3304
Clutch The silver drum in the centre of the picture is the clutch bell. Inside this is a clutch disc, which runs directly from the engine below it. It's designed to be fully diengaged below about 7000rpm and fully engaged above 10000rpm. The rotor blades operate at a fraction of this speed, not normalyl going faster than about 1700 rpm.
132 3290
Tail rotor assembly This was a fiddly piece to put together.
132 3288
Flybar again
133 3305
Gyro This is described by many as the "most cost effective" stabilisation gyro on the market at present. It's job: keep the machine pointing in the direction you want it to. In the old days, you would program a "revolution mix" into your radio which altered the tail rotor blade pitch according to what you were doing with the throttle/collective, the idea being that you could match the rotational energy being put out by the main rotors to make the tail rotor counteract it, and keep the machine steady. Technology these days simply measures the rotation and does what it needs to counteract it. Funky. This is what makes the difference between whirly-top-with-dangerous-bits and simply "dangerous".
136 3611
132 3282
The engine The slot-shaped hole you can see is where the exhaust (muffler) pipe will attach, when it arrives.
136 3614
IMG 8183
IMG 8173
IMG 8185
137 3756
Front view
IMG 8189
136 3613
132 3273
Getting started When I remembered I wanted to take pictures of the construction, this is far as I was already.
IMG 8175
132 3286
Look at the mess!
132 3277
Engine, closeup
132 3283
Assembling the rotor head These bits will eventually sit atop the swash plate.
137 3753
Still in one piece Front view, it's been out flying a couple of times now
136 3612
IMG 8171
133 3306
Digital servo The Gyro came with this servo. Because the tail rotor pitch is being computer controlled, and you want it to react fast, you have to use a fast servo. Better yet, you use a digital servo, which mostly means the servo PWM's the motor inside much much faster. This is a reasonably speedy digital servo. When it's going, it whines a bit, but I am pretty sure that's normal.
IMG 8191
IMG 8190
IMG 8172
132 3278
Engine, other side
133 3340
Outdoors [1/4]
134 3463
Rear rotor servo Moved the servo from the front of the chassis to the tail boom to shorten the control rod - less chance of flexing
IMG 7820
IMG 8193
133 3339
I fired it up... So, I took it outside, just to fire up the engine. Nobody else around to take pictures, so this is after the event. They definately make good lawn mowers - notice all the grass and grass stains. I'm so far away from flying this thing (still practising on the simulator) but I thought it would be good to give the engine and mechanics some exercise before it does fly. These things are not quiet!
IMG 8195
IMG 8188
IMG 8174
IMG 8187
IMG 8161
IMG 8157
IMG 8192
132 3274
Side view
IMG 8167
150 5072
IMG 7906
IMG 8176
132 3276
The engine OS 32 helicopter engine. Here it is with the Raptor cooling fan attached, basically a centrifugal fan.
133 3336
Busy busy There's a lot going on with this machine.
IMG 7821
IMG 7894
IMG 8159
IMG 7923
IMG 7924
IMG 9553
IMG 8186
137 3751
Camera mount Allows me to bolt a camera, or other things, to the side of the Helicopter
IMG 7868
IMG 8184
IMG 7797
IMG 8170
IMG 7789
IMG 8163
IMG 8162
133 3338
The radio I decided to start small. A 6-channel JR transmitter. It came with the servos and a 7-channel receiver.
IMG 8155
IMG 8178
IMG 8166
133 3330
So far...
IMG 8181
IMG 9555
IMG 8177
IMG 8194
IMG 8164
IMG 7891
IMG 7804
IMG 8168
133 3337
Wires/servos Much cabling. Notice how I had to trim some of the servo "horns" - they interfered with the ball-link attachments.
132 3275
The swash plate This little device is freaky. In a nutshell, the pitch of the blades varies through their rotation, according to the motions of the aileron/elevator servos (called cyclic on a helicopter) and the collective pitch. It's all a bit mad and I onyl slightly understand it so far.
IMG 8165
IMG 8156
IMG 7922
IMG 9554
IMG 8182
IMG 8169
133 3335
The electronics arrived All the servos are on, the receiver is mounted and hooked up.
IMG 8158
IMG 9557
133 3329
Rotor hub It's really busy up here - I can't imagine this thing spinning as fast as it will need to.
IMG 8160
133 3331
The body/canopy This will be it's ultimate shape.
134 3464
Rear rotor servo cabling
IMG 7798
IMG 9563
IMG 8154
IMG 8835
IMG 8196
IMG 8179
133 3328
The exhaust It's shiny now. I'm sure that will change. The silicone pipe runninf from it is a fuel tank pressurisation aid. There's no fuel pump - a certain amount of exhaust gas is used to push the fuel into the carb of the engine. Quite neat, really.
IMG 8180
147 4757
147 4775
133 3327
It's looking a bit big Note we have an exhaust (muffler) now also.
147 4776
IMG 8837
IMG 8836
IMG 8840
133 3341
Outdoors [2/4]
IMG 8846
133 3368
150 5071
147 4790
IMG 9556
IMG 8839
147 4759
IMG 8153
133 3326
Progress! With the main rotor blades on, it's starting to look like a helicopter now.
147 4758
IMG 8833
IMG 8152
147 4752
IMG 8838
147 4782
134 3462
In flying shape
147 4792
IMG 8151
147 4783
147 4780
133 3332
Rear view
IMG 8833
147 4797
147 4777
147 4760
IMG 8834
133 3333
Size comparison The universal measuring device: A Coke can.
147 4785
133 3364
150 5070
147 4755
IMG 9564
IMG 9566
147 4791
147 4750
133 3342
Outdoors [3/4]
147 4771
147 4738
IMG 8845
147 4751
147 4753
IMG 8842
147 4786
147 4756
147 4789
147 4769
147 4725
147 4729
150 5013
150 5023
133 3334
Size comparison
147 4724
147 4770
150 5041
147 4768
148 4803
147 4773
IMG 8843
147 4800
147 4727
IMG 9565
147 4754
147 4774
147 4796
147 4784
147 4728
IMG 8844
147 4734
150 5022
147 4739
150 5014
147 4781
147 4779
133 3343
Outdoors [4/4]
147 4761
147 4737
147 4748
150 5020
147 4733
150 5035
148 4802
147 4743
150 5069
147 4726
150 5019
133 3367
150 5017
147 4787
150 5044
150 5043
147 4735
133 3360
150 5018
147 4749
147 4730
147 4744
147 4740
133 3362
150 5040
147 4799
147 4793
147 4732
147 4742
147 4736
147 4798
150 5042
150 5064
150 5015
133 3357
150 5021
IMG 7762
150 5061
150 5016
150 5045
133 3363
150 5036
150 5062
148 4801
147 4731
147 4747
150 5060
150 5063
150 5024
150 5033
147 4763
133 3365
150 5030
133 3359
150 5039
147 4741
150 5038
133 3366
147 4746
150 5066
150 5047
150 5028
147 4764
147 4762
133 3358
150 5049
147 4745
150 5046
150 5065
150 5025
133 3361
150 5068
150 5059
150 5048
150 5032
150 5029
150 5067
150 5050
150 5057
heli 2
heli 1

Powered by Piwigo