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Helicopter
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Electric Conversions
› Raptor Titan 50 converted
02-14-2018 04:41 PM  4 days agoPost 1
maxell44

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canada

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Well she is all done waiting for test flying. Its been a work in progress the last few months. Thanks to the 17 page thread in the conversions thread. It was invaluable information and helped me out. Thank god for Runryder.

RAPTOR 50 TITAN (electric conversion) RTF
GY401 gyro
2- JR821 Digital
1- JR DS811 Digital
Hyperion 4025-890Kv Motor
Talon 90 ESC
Thin cord Carbon fiber blades (don't know the brand its not marked)
Wide cord blades (Thunder Tiger)

Did two test hovers today. Holy crikey. What a sound...what a beast. few clicks of trim and gyro at 74% stable hover but the tail is still a work in progress. Has a little wag in it still. Also the tail belt seems to get loose outside but tighten up inside. Is the belt that temperature sensitive...? Any known issues with the tail belt I'm no familiar with..?

Doug

FG

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02-14-2018 04:48 PM  4 days agoPost 2
BeltFedBrowning

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Kansas City

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Long live the flybar!

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02-14-2018 11:37 PM  3 days agoPost 3
maxell44

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canada

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I prefer the fly bar. My Blade 450 and Trex 500 and soon to be Trex 450 SE V2 all have flybar's. Nothing but a gyro to steady the tail. I like the feel and performance of a fly-barred Heli. I feel as if I'm flying the Heli manually. No fancy electronics doing it for me. Mind you flybar-less is so tempting and less complicated except for the flybar-less unit programming. I dunno, who knows maybe I might go flybar-less one day but till then I enjoy my Heli's for what they are and how they feel and fly.

FG

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02-14-2018 11:42 PM  3 days agoPost 4
BeltFedBrowning

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Kansas City

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I don't own a FBL heli either. FBL seems less complicated until you consider the electronic components inside the FBL unit.

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02-15-2018 12:07 AM  3 days agoPost 5
ICUR1-2

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Ottawa, Ontario

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I just acquired some flybar helis and set up my first one since 2011 last night.
Compared to FBL units I found them equally difficult. Setting up the radio and then making things line up properly. Time wise they are about the same.

spending time, paying attention

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02-15-2018 01:07 PM  3 days agoPost 6
Flyin for Jesus

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Dana Point, Ca. 92629

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maxell44
Also the tail belt seems to get loose outside but tighten up inside. Is the belt that temperature sensitive...?
From what I've read, the aluminum boom is temperature sensitive. Belt remains the same, boom shortens with cold.

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02-15-2018 10:51 PM  2 days agoPost 7
maxell44

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canada

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So that's it...As if...?I guess I'll have to search for a carbon fiber boom then. Who knew eh...? Hm.

FG

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02-16-2018 01:38 AM  2 days agoPost 8
Heli143

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Phenix City, AL

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Never knew that about the aluminum tail boom

Roy Mayoral

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02-16-2018 01:53 AM  2 days agoPost 9
maxell44

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canada

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Well I just ordered a carbon fiber tail boom from rcfoam.com $24.99 not a bad price.

http://www.rcfoam.com/carbon-fiber-...e%29-p-927.html

So what kind of anti-static product should I use to eliminate static electricity in the boom...?

Douglas

FG

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02-16-2018 01:11 PM  2 days agoPost 10
Dyehard

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Cedar Bluff, Va.

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I can't count the number of Raptor 30 and Raptor 50 helis I've flown since they came out. I've never had or heard of a static problem on one. Currently flying a Raptor Titan and a belt tail X50. I never put anything on the tail.

Allen Dye

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02-16-2018 03:25 PM  2 days agoPost 11
BeltFedBrowning

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Kansas City

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Same here. Never had a statc problem on my Raptor 50 Titan. I flew it on FM.

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02-17-2018 02:27 AM  1 day agoPost 12
maxell44

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canada

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I dunno. I read that on another thread. I think it was either helifreak or rcgroups, can't remember. OK I guess I won't need any then. Check out my build thread on this project.

https://www.rcgroups.com/forums/sho...-50-to-Electric

Already did some flight testing and what a machine. Tame as a pussy cat. Really feels light in the air and on the sticks.

T-0,90,90,90,90,
P- 31.5,51.5,71.5,84.0,94.5

The throttle curve was my personal preference. I like just using pitch to fly. The pitch curve was already set up in the JR 8103 I got with it but swapped for my DX6i instead and sold the JR. All I had to do was input the info from the JR to my DX6i and "voila", she flys.

FG

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02-17-2018 02:55 AM  1 day agoPost 13
BeltFedBrowning

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Kansas City

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What is your low end pitch with those settings? You will need some negative pitch with throttle or you won't be able to bring her down without autoing it.
I am afraid that if you have zero pitch with 90% throttle that you are going to overspeed.

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02-17-2018 11:59 AM  1 day agoPost 14
maxell44

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canada

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BeltFedBrowning
What is your low end pitch with those settings? You will need some negative pitch with throttle or you won't be able to bring her down without autoing it.
I am afraid that if you have zero pitch with 90% throttle that you are going to overspeed.
Hm. I have to disagree. I flew it yesterday with no issues taking off or landing. Everything was un-eventful. I fly with a flat throttle curve all the time on my 450. I've never had any over speed that you speak of..? I tried flying without a flat curve and hated the constant increase and decrease of the engine, such as a linear curve. Reminded me of a fixed pitch heli. So I read and read online and it was decided a flat curve suits my style of flying. Mind you I'm a sport flyer and not a 3D flyer. I like the scale feel of the constant rotor speed. Using pitch to go up or down is so simple. I don't use a pitch gauge. I just level the swash plate, make sure my servo's are at 90 degrees, and eye the blades individually parallel to the boom to make sure they are at 0 degrees...set the tracking and use my preferred throttle and pitch curves and just fly. I've never had any issues. Same as the flybar, everything is set up by eye and I use a caliper to make sure the flybar paddles are the same distance from the rotor head on both sides. I statically and dynamically balance eveything. No shake, no fuss, no muss, and just fly. I guess you could say I'm setting up and flying by the seat of my pants. Its not rocket science and they aren't that complicated to set up as everybody keeps saying. On that note, once I started flying these things they weren't as hard to fly as everybody kept telling me. My learning curve wasnt as long as some other people's. I do have r/c airplane and car and boat and glider experience and lots of SIM time. So helicopters was my next logical step.

FG

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02-17-2018 01:15 PM  1 day agoPost 15
ICUR1-2

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Ottawa, Ontario

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I see the confusion between the last 2 posts,

When you setup your pitch it is measured in degrees. The typical setup goes from -10° to +10°
And is what we use normally to fly with.

The throttle is usually a set speed and does not require a governor on electric. A flat line is all that is needed as over speeding the motor won't hurt it unlike an IC engine.

spending time, paying attention

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02-17-2018 01:22 PM  1 day agoPost 16
maxell44

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canada

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But I'm not getting any over speed..? I don't understand..? I understand the +10 -10 thing and that's how the guy who owned it before me set it up. As per the built in gauge on the left side of the Heli frame, and per the manual. Am I missing something here...?

FG

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02-17-2018 02:41 PM  1 day agoPost 17
BeltFedBrowning

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Kansas City

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I was still in nitro mode. It had been so long since I read the first post, I forgot it was not nitro anymore! If it was nitro, the throttle curve would overpeed the engine. It is happening now, it just doesn't relly matter on electric motors. We used to have to be careful with overspeed on the head when we used wood blades, it would eject the blades at high head speeds.
You must have some negative pitch on the blades if you are doing more than hovering and you are going to be able to bring it down.
One of my first gassers, a Kalt, I set up with a pitch curve from +2 to +12 and a throttle curve starting at zero. It was a windy day and the heli was stuck about 150 feet in the air because if I brought the throttle down to decrease the pitch enough to descend, the throttle settings would cut the throttle and I would lose the tail. After that I had an idle-up set and I never flew with a zero in my throttle curve again.

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02-17-2018 03:24 PM  1 day agoPost 18
maxell44

rrNovice

canada

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As I said above. No problems with how I have the throttle and pitch curves set up. She goes up...fly's around...then lands. What more can I say. Smooth as butter. I can't paint anymore of a picture of it. It does what I want it to do and I have complete control of it. *sigh* It fly's and that's the important thing.

Link to the build log for it:

https://www.rcgroups.com/forums/sho...-50-to-Electric

FG

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02-17-2018 07:14 PM  1 day agoPost 19
Flyin for Jesus

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Dana Point, Ca. 92629

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maxell44
T-0,90,90,90,90,
P- 31.5,51.5,71.5,84.0,94.5
BeltFedBrowning
You will need some negative pitch with throttle or you won't be able to bring her down without autoing it.
The 31.5 in the pitch curve is negative pitch.

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02-17-2018 07:58 PM  1 day agoPost 20
maxell44

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canada

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I kinda figured that was why it was low under 50. Anything under 50% is negative. From what I've read you should only have about -2% pitch at the bottom end in case you get into trouble. My 450 pitch curve is 0, 45, 55, 75, 85,100 and the throttle curve is 0,85,85,85,85. Fly's way different than my Raptor. I may use the same pitch curve for my Raptor on my 450 as well. Seems to be a more tame curve.

FG

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Helicopter
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