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10-25-2009 04:45 PM  8 years agoPost 1
Bucky

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England

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Right, heres the jist, I just bought a Kyosho Concept 30 SE off ebay, needs a bit of tidying up, etc, and also new tail rotors, which ive just purchased too, thing is, when i picked it up, the guy said it was a bit skittish, so ive gone through all the linkages and connections to make sure they're all ok, and where they're not, adjusting them to the spec's given in the manual.

Only thing is, im wasnt sure about the gyro, its a seperate motor/control box set up, with no markings or decals on, and it didnt come with any instructions with it, so i have just ordered a gy401 clone.

While riting this ive just managed to snap a ball link on one of the pitch control arms!!!! dohh!!! not to worry, also on order!!

Has anyone ever flown a heli with a SS6? thats what the guy gave me with the heli. My dad use to fly back in the day when they didnt have computer Tx's and he said he use to just control the throttle with the Flap rotary knob (ch6) then using the 4 main controls for for/aft cyclic, and rudder/pitch?!?!

Cant really afford another Tx so was wondering if there would be any inherrant problems with this? i would of thought it would be easier not having to worry about the throttle affecting the pitch?

Please forgive any dumbness, im pretty new to helis, but ive been flying fixed wing craft for years.

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10-25-2009 07:10 PM  8 years agoPost 2
Bucky

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England

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ok scratch that!!

Just bought a Futaba T7CP FOR £46 of e-bay, just need to figure out how to program it!!!

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10-25-2009 07:19 PM  8 years agoPost 3
Hughes500Pilot

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Anaheim, CA

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I have to let you know, I really, really suggest you use at least a 5 channel HELICOPTER transmitter at the very minium.

If you really must use an airplane radio that does not mix the collective and throttle, DO NOT use the flap trim to control the throttle!!! Look on page 13, step 26 of your instruction book and it shows you how to properly set up a 4 channel airplane radio on the Concept 30.

-Steve

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10-25-2009 07:23 PM  8 years agoPost 4
Brokenlink

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Oakdale

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The radio he bought should work like a charm.
Go here to program the radio. http://www.raptortechnique.com/radiosetup.htm

Jamie Griffith

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10-25-2009 07:25 PM  8 years agoPost 5
Hughes500Pilot

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Anaheim, CA

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Ha ha, in the 9 minutes between when I saw your post and typed a reply, I see you got a 7 channel. Way to go.

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10-25-2009 07:29 PM  8 years agoPost 6
Bucky

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England

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I was looking at the raptortech site ealier, some good info on there. Might have to read it a few times before i figure it out though.

The SS6 is a six channel Tx, and i was just saying that thats the way my old man use to fly it. on that note however, can someone explain why the throotle and pitch MUST be linked/mixed together? i know the clutch is centrifugal type, so you need the revs, but why does it have to be mixed? Not sure i understand?!!

Again, appreciate your time and appologies for any dumbness on my part

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10-25-2009 07:30 PM  8 years agoPost 7
Hughes500Pilot

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Anaheim, CA

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The clutch does not engage while the engine is in low RPM, such as when it is at idle. But as you increas throttle, the RPS'd increase and the clutch grabs and starts to spin the main blades.

Now that we have the clutch engaged and the blades spinning, whe need to lift the heli. To do this, you increase the pitch of the blades. The blades "bite" into the air and lift the helicopter. The more pitch, the more bite, or load on the blades and the engine.

If you were to have very high pitch on the blades and low RPM, you would burn up the motor. Kind of like driving a car SLOWLY up a hill in 4th gear. If you had very little or no pitch on the blades and the engine were at high RPS, the engine would over-rev and blow up. Kind of like driving your car at highway speeds in 1st gear.

So, what you need to do, in theory, is have a fixed blade speed and engine speed. If you want to increase power, you increase the throttle. HOWEVER, at the same time, you increase the blade pitch. Therefore, the RPM does not increase - only the power output of the engine does.

If you lower the blade pitch, you also lower the engine throttle at the same time. The RPS's do not decrease, because you lowered the blade pitch.

If you have the throttle and collective pitch set correctly, you engine RPM stays the same all the time. When you increase the blade pitch, you add power to the engine - but just enough to match the increase in blade pitch. Therefore, you RPS stays the same. And when you lower the blade pitch, you need less power from the engine so the throttle lowers and the power is reduced. But again, you only lower the power of the engine just enough to equal the lowered blade pitch. Again, lower pitch, less engine power needed - And the engine RPM stays the same.

Hope this helps. -Steve

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10-25-2009 07:35 PM  8 years agoPost 8
Bucky

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England

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I totally understand that, but surely if the throttle was held constantly at full throttle with the rotary knob, all you would have to worry about would be the pitch? that way you could have any picth position you wanted, without altering the throttle, and vice versa.

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10-25-2009 07:40 PM  8 years agoPost 9
Hughes500Pilot

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Anaheim, CA

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You typed a reply faster then I could type...

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10-25-2009 07:45 PM  8 years agoPost 10
The Old Guy

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UK Surrey

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Great little heli,
Post no help to you but intresting maybe
http://video.google.co.uk/videoplay...15236980145183#

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10-25-2009 07:50 PM  8 years agoPost 11
Hughes500Pilot

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Anaheim, CA

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If you ever have a question, let me know. I still have lots of Concept 30's. Here is just a few of them.

-Steve

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10-25-2009 07:54 PM  8 years agoPost 12
Bucky

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England

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Thanks Steve

Just got to wait for the postman to bring all my goodies!!! then i can get it set up and fly the damn thing!! think i'll get a fair few hours in before i get a fuselage for it ( the old one is knackered )

Once again, thanks !!

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10-25-2009 07:56 PM  8 years agoPost 13
Hughes500Pilot

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Anaheim, CA

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One last thing I forgot to mention...

The stock 500mm DX/SE baldes were made from foam with a fiberglass spar and a hard plastic outer shell. The early ones were flawed. But there are still some floating around.

Use Caution... Kyosho later came out with new stock blades that looked the same, but there was a little star stamped into the blade on the bottom near the root end (see photo). If you have the foam blades without the star, DO NOT FLY THEM!

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10-25-2009 11:12 PM  8 years agoPost 14
GMPheli

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W. Bridgewater, MA USA

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"I totally understand that, but surely if the throttle was held constantly at full throttle with the rotary knob, all you would have to worry about would be the pitch? that way you could have any picth position you wanted, without altering the throttle, and vice versa."

You would run the risk of exploding the head as you would overspeed it. The goal with the throttle/pitch curve is to achieve a constant headspeed. A govenor does this for you.

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10-25-2009 11:17 PM  8 years agoPost 15
Bucky

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England

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Steve, the heli came with 2 sets of blades, both wood,im guessing its hit the deck a few times in its life!! lol

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10-26-2009 08:43 PM  8 years agoPost 16
Bucky

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England

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Heres one for you!

The stock heli uses a servo mounted in the main cage assy to control the tail, but somewhere along the line someones put a boom mounted servo on with a rigid carbon push rod. The rod is the rong size and you cant line the servo horn up correctly, needless to say you cant shorthen the rod any further.

So what do you guys reckon? should I stick with the boom mount set up and just get a shorter rod, or take the aftermarket mount off and use piano wire from a main cage mounted servo?

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10-27-2009 02:48 AM  8 years agoPost 17
Hughes500Pilot

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Anaheim, CA

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I would just put it back to stock. Works fine. -Steve

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10-28-2009 03:27 PM  8 years agoPost 18
Bucky

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England

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NEW GEAR!!! YEY!!!

New tranny came in the post today, and its the HElI configured version, with the trainer switch on the right, bonus!!

Just need to cycle the nicads before i can do anything though, as soon as i switched it the battery allarm screamed at me. Will eventually purchase new sets for both the rx and tx as i dont know how these sets have been treated/mistreated!!

Also, won £200 on a scratch card the other day, so i went and bought a FP-R1380P pcm1024 rx and some new S3004 servos. So now my lil old concept is up to date, electronically speaking!!!

Just been reading through the tx manual though, HOW CONFUSING PLEASE???? ok maybe its not for people who have been using computer radios for years, but its my first

Also in the middle of converting the tail control back to stock, using a length of piano wire.

Im thinking once ive actually got it where i want it, im gonna have to take it to a LHS or something to get sorted etc. I forgot to mention that many of the pitch and cyclic rods are too short, so im having make new ones, if i can find a die small enough to cut the threads

Will keep updating as i progress, its my first heli, and its been a while since ive flown anything tbh, so please bare with me

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10-29-2009 07:52 PM  8 years agoPost 19
Bucky

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England

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Ok, got some more bits today, made up the new pitch control rods etc, dialed in 0 degrees pitch at centre stick as per manual.

Now, ive checked my limits, full up stick, with end point adjusted for maximum throw ( without anything binding ) and full down stick, all adjusted etc etc, and i only have -7 deg at pos 1 and +5.5 deg at pos 5.

Can someone tell me if this is all i can get on the SE? I figured about -8 to +8 deg??!!

....Nevermind, just read the manual and fount the picth settings

Full up : +10 deg
half : +6 deg
full down: 0 to -1 deg

Teach me to read everything first!! doh!!!

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10-29-2009 10:34 PM  8 years agoPost 20
Hughes500Pilot

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Anaheim, CA

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Yep, they original Concept 30's did not have too much pitch range... But you should be able to get about -4 thru +9 out of them. You can get even more if you put SX grips on or get one of these Ferris mixing arm adapters (see photos).

-Steve

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