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Scorpion Power Scorpion Power
03-14-2003 05:26 PM  14 years agoPost 1
Intruder

rrApprentice

McHenry, Illinois

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The pics of my hummingbird are finally in my gallery. I've tried to show the modifications as best I could in the Pics. Here are the details of my build:

1) I cut the excess of the screw which clamps the horizontal stabilizer. This screw is way too long and I wanted to elinminate as much weight as possible.

2) I cut the small cover for the box on the frame in half. I cut one piece in half again. These parts I used for the servo mounting plates. I cut the remaining half to the same size as my gyro.

3) I used 15 minute epoxy in a very thin layer on both the framemount and the servo backing plates to secure them to the original frame mounts.

4) Again I used a very thin layer of epoxy to secure my gyro mounting plate the small "A-Frame" in front of and below the motor.

5) I installed the hummingboard and the MX6800 Pico receiver in the small box on the frame of the HB (see pictures in gallery). And I installed my century micro peizo gyro on the mounting plate up front.

6) I am experimenting with different main motors and have found the ideal solution for me. It is a 280 ball bearing motor made by sagami of japan. I am using a 11 tooth pinion and with stock batteries getting flight times of 8.5 minutes. I have not rested the batteries and tried again but feel I could eeek a couple more minutes from the stock battery. I have many video clips of my hummingbird flying in my basement. The smallest I can get the video to shrink is about 27mb. I'm still working on the videos. If anyone is interested in my project let me know. I am building another hummingbird with similar components but using JR servos. I've got a couple HS55s, but I'd like to try HS50s.

7) I was experiencing a glitch when I had the rx antenna running along and secured to the tail boom. I made a coil antenna by wrapping the stock RX antenna wire around a small tube I scavenged from can of aerosol parts cleaner. I secured the tube to the frame and boom (see pics) I have not had a glitch since.

8) Another thing I did was to remove the horizontal stablizer from its mount. It is secured with very thick foam tape. I remounted it using some very thin double sided tape (no foam) It lowers it closer to the boom and may save a little weight removing the foam.

In my opinion this Hummingbird is awesome. It flies great and is very durable.

UP = Away From The Center Of The Earth

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03-14-2003 06:59 PM  14 years agoPost 2
stevem

rrApprentice

Oklahoma

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Glad to hear of your new heli. I have one and am having a ball with it. I too have installed the same 280bb motor with the stock (9 tooth I think) pinion. Looks like I get about 10-12 minutes out of ground effect in hover with a 7 cel pack of Energizer 750 AAA NiMH cells.

I also have an Astro 010 and phoenix 10 ESC but am getin glitching which keeps me from using that setup. I'll start wrapping stuff in foil to see if it helps.

I have only recently had a few flights outside. I am very happy with how stable it is outdoors. But let a slight breeze come up and watch out! I had som eunintended fast forward flight today Th elittle heli is pretty darn rugged too. I had a piccolo and it was pretty fragile comapred to this one. I did have a pretty severe crash where I broke the flybar, I also broke one of the tail brace struts so I cut it to length and used it as a replacement.

I am currently using HS55 servos, GWS receiver, Hummingobard mixer/esc, 280bb motor and Jr G410T HH gyro. For some reason the heading hold messes with the hummingboard so I have it turned off. My helimax micro piezo works well also and is lighter. I'll probably swap that back in. The Cp version will get brushless.

I also installed a GWS EDF-50 ducted fan motor on the tail.. Had tons of authority - you could nail the throttle and the tail would stay rock solid. The motor would get pretty warm even with the heatsink and the extra weight on the tail really effected aileron/elevator response.

Have fun!

Steve

PS - I am about to order another - the next one will be converted to 120 degree CP in the near future.

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03-14-2003 11:58 PM  14 years agoPost 3
Intruder

rrApprentice

McHenry, Illinois

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GWS Motor

Are you still running the GWS motor on the tail ?

Hows it holding up? I'm very happy with the 280bb motor. it has an awesome sound compared to the stock motor.

I've ordered a couple more motors and gears to play with. Need to see if I can find carbon brushes in the size to fit the 280BB motor and I'd like to try a nylon or delrin or such gear on the motor.

This heli is so kewl. I cannot wait for the CP upgrade to come out. When it does I'll go to Li-Poly and the works, well maybe not brushless. Maybe stick with the BB type motors if they perform well. We'll see.

Ken

UP = Away From The Center Of The Earth

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03-15-2003 12:08 AM  14 years agoPost 4
flyboy

rrElite Veteran

North America

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Removed the boom supports, horizontal fin, cut away the Rx box, removed the plastic clips on the wires, removed the Rx and Gyro from their cases, snipped about 3/4" off the back of the landing gear, cut down the battery clips, removed the canopy and mounts, this thing now shoots about six feet in the air when you give it any throttle, flight time is about thirty percent longer but I notice a huge power difference. I would guess I shaved about twent five grams from her and she now screems.

Peter would not be proud! But this thing now rips.

This is hands down the best money that i have ever spent! Order one now as last I heard they are selling ALOT faster than they can get them.

Don't think that I haven't thought about flipping the blades, reversing the motor, and hand starting it inverted...................Because I have!

They are easy to assembly, and get flying, but they do take about thirty minuets to get used to flying, as they only have hiller paddles for control. There is about a second delay in the control inputs, if anything it helps to sharpen your skills even more.

Century is in the process of marketing an upgraded motor that looks like it should screem.

Even though they come with plastic blades, I've got wood!

Thanks, Flyboy

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03-15-2003 12:13 AM  14 years agoPost 5
Intruder

rrApprentice

McHenry, Illinois

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Camera on a hummer

I'm ultimately going to mount a small video camera and transmitter on my hummer. Hoping to have the smallest video equiped heli. I've got some very small transmitters and cameras ( I MEAN REALLY SMALL)

So I may have to use some of your techniques to lighten my camera hummer.

Thats next.... LOL

Ken

UP = Away From The Center Of The Earth

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03-15-2003 02:58 AM  14 years agoPost 6
kevlar11

rrApprentice

Edmonton

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!great set up Intruder.
Your motor cost how much?It sure looks the same as the Simprop speed 280 I put in my Hbird. The top of the motor has sagami japan on it. Haven a blast with mine, no less than 6 Hbirds showed up at the indoor electric club yesterday!

KD.

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03-15-2003 05:51 AM  14 years agoPost 7
Intruder

rrApprentice

McHenry, Illinois

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Motor Price

I paid around twenty bucks for it. I've ordered two more for my other two h-birds.

I love this bird, its so kewl, and durable too.

Ken

UP = Away From The Center Of The Earth

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03-15-2003 06:26 AM  14 years agoPost 8
kevlar11

rrApprentice

Edmonton

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Where from ?
thanks
KD

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03-15-2003 06:06 PM  14 years agoPost 9
rubelcon

rrNovice

Southern California

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Need help w/ my hummer tail oscillation!

Have two hummer's and no luck. First one I received, the motor burnt out after 10 seconds. It seems that when I received the new motor from Century, after breaking it in w/ 2 batteries at 1/4 throttle, I burned up yet another motor (It hovers at 2" w/ full throttle.) So now I am woorking on my other hummingbird, as the first one went back to Century.

So, I put in my Orion Elite Micro Motor (from my piccolo) and the head speed is way up now, so it will actually hover, but now the tail oscillates uncontrolably sometimes. I am running a RD-6000 super, on basic mode.

Can anyone help please? Any suggestions would be greatly appreciated!!

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03-15-2003 09:36 PM  14 years agoPost 10
Intruder

rrApprentice

McHenry, Illinois

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Helpful hints

Are you running the stock hummingboard controller?

Turn up the gain a lil on the gyro, give the tail rotor blades a lil tweak for more lift, same thing for the main blades. not too much though. You can go too far.

Make sure the gear mesh is not too tight on both the main motor and the tail motor. It should be smooth turning by hand, not tight.

Make sure the flybar paddles are level to the swashplate.

Put a drop or two of tri flow oil on each of the bearings.

Make sure the horizontal stabilizer is level. You'd be suprised how much it will cause the tail to drift if its tilted to one side or the other.

I was also suprised how much difference the tail holds without the canopy on the heli. When I installed the canopy I had to turn up the gain some.


Hope this helps. Ken

UP = Away From The Center Of The Earth

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03-15-2003 10:38 PM  14 years agoPost 11
rubelcon

rrNovice

Southern California

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Ken,

Seems to have helped alot, thanks. Just got back from my LHS, and bought a simprop acro motor, because I think the Elite Micro Mod is to powerful, is it possible it is drawing more than 6v?

Also, should I continue to run a hotor motor than the stock motor,

and is turning the gain up clockwise or counter on the MPI gyro?

Thank you again for any advice,

Flyin the hummin'bird indoors because it ir rainin' today!

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03-15-2003 10:43 PM  14 years agoPost 12
Intruder

rrApprentice

McHenry, Illinois

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Car Motor ?

Don't know a whole lot about that motor. But I'm running a motor that I believe is similar to the simprop and I like it a lot. It sounds kewl and runs smooth.

Which of my tips helped you ? Seems gear mesh is the biggest problem with the factory setup. Too tight from the factory.

Oh yeah another thing to check is the flybar paddles distance from the center. Make sure they are equi-distant from the main shaft.

Let me know.... want to eeek every bit of performance out of this little heli. It flys great once you get it dialed in.

Ken

UP = Away From The Center Of The Earth

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03-16-2003 12:26 AM  14 years agoPost 13
kevlar11

rrApprentice

Edmonton

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motor

Hi Ken
What supplyer did you get the motor from?
Also great video,today I was hovering in the local hobbie store 2 guys orderd Hbirds on the spot . Loads of fun!
KD

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03-16-2003 12:30 AM  14 years agoPost 14
Intruder

rrApprentice

McHenry, Illinois

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LHS

I got mine from a LHS but its sold as a simprop 280bb I guess graupner has a similar motor but I don't have the model number.

Now the bad news..... I may be incorrect but seems that word is out about these motors and no-one has them in stock right now.

You should be able to hunt one up. A lot of people use them in electric planes and a lot of LHS seem to stock them.

Ken

Better video coming tonite....

UP = Away From The Center Of The Earth

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03-16-2003 01:10 AM  14 years agoPost 15
rubelcon

rrNovice

Southern California

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CAR MOTOR!

Ken,

We use these Orion elite Mod' motors in our piccolos' (eco-pro). The gain adjustment helped the most, but was not sure on this little gyro whether I was turning it up or down.??

Also, I just got my 280BB, any set up hints?

Regards,

Brian

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03-16-2003 01:35 AM  14 years agoPost 16
Intruder

rrApprentice

McHenry, Illinois

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Cap across the poles

You don't need to wire the motor backwards, but you need to solder a tantalum cap across the poles, not just from the poles to the can. If its the same motor it will have caps from the poles to the can already but not across the poles.

Do this and the motor wiring can stay correct and you reduce glitching from sparking etc..... I'm no expert on these electric motors but these are tips I picked up elsewhere and they have worked for me.

Orion Elite Motor ? how many volts ? is it a direct fit for the 280 size motor? is it brushless or require special controller ?

Thanx, Ken

UP = Away From The Center Of The Earth

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03-16-2003 02:56 AM  14 years agoPost 17
rubelcon

rrNovice

Southern California

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Ken, this is a direct replacement for the HPI micro car motors (1/18) No special controller or mixer required, as they are fairly efficient, but nothing compare to my new Simprop Acro!

My only problem now, the more throttle I give it, the more the bird spins out uncontrolably to the left. Any suggestions KEN?

Regards,

Brian

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03-16-2003 03:22 AM  14 years agoPost 18
Intruder

rrApprentice

McHenry, Illinois

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Tail Rotor Pitch

Make sure the polarity of the tail motor to hummingboard is correct. Both positive leads inboard(main & tail motor). I've fiddled and fiddled and mine holds tight with a century micro piezo gyro. The one thing I did do was to tweak the tail rotor blades for a little more thrust. I did this because I didn't want to max the gain on the gyro.

I use a 9CHP to fly this critter, but have nothing special setup on the radio. a little expo. Servos centered with the subtrims, and its all trims centered on the dashboard.

Others have been complaining about the tail motor running hot or even burning up ??? (scratching head) I've been checking mine frequently and it runs cool. No Problems. I cannot say others have not received bad motors or controllers.

I've got a new video up on the web site and I'm working on another.

This bird is very stable, I am not a very good heli pilot but I'm getting better. In the video I try to show how stable it is and kepp in mind I am not flying in ground effect. Most of the time it is at least a foot and mostly two feet or higher above the deck. I am flying around a bit, NOT nose in. Although I did my first piro today in a buddys larger room.

I made it all the way around, but started losing altitude near the end???

What a blast this thing is. I want CP on it now.

UP = Away From The Center Of The Earth

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03-16-2003 05:10 AM  14 years agoPost 19
swampd20155

rrNovice

Gainesville, FL

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Great little heli!!!

I got my HBird a little over a week ago and have been having a ball with it! I immediately replaced the stock motor with an Orion Elite Modified - what a difference! Am hovering at about 1/4 throttle with a three-pack of 1025 LiPolys. Using a standard Piccoboard and an Extreme 5 Rx. Seems to be a perfect combo - 20+ minutes of flight time per charge! (Both motors are pretty warm by that time - especially the stock tail motor.)

And I, too, can attest to the durability of this little bird! I took it outside on what I thought was a calm day - come to find out it was a little gusty. Got into some pretty wild FFF - uncontrollable at times. Finally rammed it into the side of the house, but the only replacement was a flybar and a rotor blade. Had to glue the main gear struts back on, but I consider the damage to be very minor, especially considering how fast the little beast was travelling when it hit the house!

Century has a real winner here! And NOT just because of the price! Any word on when a CP mod will be available???

Keep the blades up on landing!

Marsh

Beating the air into submission...

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03-16-2003 03:17 PM  14 years agoPost 20
rubelcon

rrNovice

Southern California

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Marsh,

When I ran my Elite Micro Mod, I found out that my tail oscillated and sometimes uncontrollable, even with gain adjustments on my Century Micro Gyro, any suggestions?

Thanks,

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