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HelicopterScale Model RC Helicopters › MD500E BUILD QUESTION
10-25-2015 11:24 PM  26 months agoPost 41
BAMAGUY

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Alabama

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10-25-2015 11:32 PM  26 months agoPost 42
BAMAGUY

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Alabama

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Thanks Stan, I appreciate that you are willing to do that.
I'll mess around with moving the battery down some more but it has a pretty stable hover so not sure I need to move it too much though.

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10-25-2015 11:53 PM  26 months agoPost 43
Krachdumy

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Pembroke Pines, FL.

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Looks really good. You are building it right. Checking for Locktite is dead on. I also like a lot the wood blocks. I use a swashplate leveling tool and make the swashplate leveled. In hover the swashplate is leveled and not tilting the heli forward. I shoot for the head to be leveled in hover. I tilt the heli forward to simulate scale by applying elevator, not by having it tilted in hover. So, my personal view is that even is good. Same with CG, the heli should be even, not tilted forward.

I do the CG by holding the heli under the blade grips. I don't use a wire. But as long is it's balanced, don't worry about it being absolutely balanced. I also balance my blades. Most of the local guys don't. They feel the blades made today are balanced enough. I've witness the opposite.

BTW, I haven't tried it, but I also heard that using a white blade with a black blade gives the optical illusion that the blades are spinning slower.

I don't like the cutout on top. I rather see a cutout that's wider. You can see how I made it in one of my earlier pictures. If you don't like it, then at least make your teardrop wider.

No matter how hard you try, you will never have the heli fully centered. Luckily, only the owner knows this. In the air or up close it will seem centered.

I don't like the tail being that high to the fuselage on the rear. It doesn't have to be centered, but that's way off. I would raise the front block slightly with spacers. The added grams will not make a difference in the CG and the heli will be appear more tilted forward when hovering. The tail can flex a bit. So it's your call. However, with a gear driven tail, you don't want the gear rod to warp. That will cause vibrations.

Two things I don't like, many things I do. I'm sure the finished heli will look great and fly very well.

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10-26-2015 02:37 AM  26 months agoPost 44
BAMAGUY

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Alabama

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Krachdumy, the tail being high is due to the servo linkage rod bracket clips so even if I raise the front it just puts it in a bind and don't lower it any. Seems to hover well enough though. Does it not look right to you in the air?
Also, if you need some blocks, let me know. These are going to work out well.

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10-26-2015 04:37 AM  26 months agoPost 45
Krachdumy

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Pembroke Pines, FL.

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Hi Bamaguy,

Couldn't see it in the pictures whereas the tail rod guides were involved. I agree it doesn't seem to be a whole lot of space back there to center it. With that said, I think it's fine. I just saw the video and I think it's flying or hovering very well.

It also sounds and looks like you got high head speed. Nothing wrong with that. Its really based on how the heli feels to you. You can lower the head speed if you think the heli is too twichy.

You have a 6S setup. That's a lot of power. So what I see and hear is normal for 6S. However, you can lower it if you feel it's twichy. The manual calls for general flight as:

1= 0%
2= 40%
3= 70%
4= 85%
5= 100%

You can try:
1,2,3= the same as above.
4= 80%
5= 90%

or,
1,2 = the same
3= 65%
4= 75%
5= 85%

Just for the feel of it, try dropping the numbers. Keep it linear. The lower the percentage the hotter the motor will get. So don't go too low. Check the motor temperature if you go with the last option. Eventually governor mode is the way to go.

Thanks for the block offer. I might take you up on it someday. For now I'm good. All my heli's are flying really well. Don't want to change a thing. My Trex 450 scale is running 2200 head speed. It's slow and docile. Again, it's a 3S setup with the same motor you have. I'm running no more than 11 degrees positive at full pitch. Nothing crazy here.

BTW, nice shop in the background.

Enjoy!

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10-26-2015 12:02 PM  26 months agoPost 46
BAMAGUY

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Alabama

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Krachdumy, I'm not sure what the head speed is but I'm running a flat curve of 0,80,80,80,80 with some expo mixed in. Been flying these settings since starting forward flight. I had thought about lowering it some but figured with the added weight I might want to see how it does first.
I did notice the batteries and motor were hotter than before, at just hovering, but not hot enough that I couldn't touch and keep my hands on. I figure it'll run a little cooler if the heli is in flight, it's got to get some air in through the top windows to help cool it.
Thanks for the comments on the shop. I love my woodworking. I've just finished the bench I'm working with my heli on. Always wanted a good heavy, tall, workbench so I built one over last winter. It's built, for the most part, from plans of the 17th century. If only my woodworking friends could see me now!

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10-26-2015 02:16 PM  26 months agoPost 47
Krachdumy

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Pembroke Pines, FL.

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Hi Bamaguy,

The equipment in the shop is definitely impressive. Congrats!

Try different curves. Here's why. The Throttle curves you are using now are more for governor mode. You set it to 80% and allow the governor to do the rest. The governor will keep your head speed constant throughout the whole flight. It's more efficient and your flight time will increase.

Without governor mode you want to simulate a governor. At zero pitch and 80% your blades will have less resistance that say 8 degrees with the same 80%. Therefore, the blades spin faster at zero pitch than 8 degrees. And also the sound isn't constant. The motor sounds higher when you are hovering than when you are climbing because there's less pitch when hovering.

Until you change it to true governor mode, try to mimic a governor. Try this setting.

1= 0% dead stop
2= 40% slower spool up.
3= 70% hover or almost hovering.
4= 75% general flight
5= 80% all out.

There's one exception. Your heli is used. Perhaps the previous owner set the ESC to governor mode. If he did, forget the above settings. If he left it out of governor mode, then you'll love the above settings.

As for temps. If you can keep you finger on the motor after hovering, you won't have a problem with the above. But do check it again and check the ESC too. The ESC limit is 212 deg. F. Your motor's limit is 392 deg. F. The battery should have at least 20% left when you are done. Warm is ok for the battery, hot is not.

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10-26-2015 02:27 PM  26 months agoPost 48
doorman

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Sherwood, Arkansas

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Good Video

I just watched your video, and it looks good...
I did notice that each time you moved forward, just a bit, the tail dropped very easily.. that is what a little addition nose weight will cure.. not saying to have enough weight so it hovers nose down... when you add the scale vertical
remember to recheck your cg.,
Your well on your way to a good looking, and good flying first scaler...I will be back to you later about the bolts..
Stan

AMA 2918-Team JR, Spin Blades, East Coast Scale Helicopter,Castle Creations

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10-26-2015 03:58 PM  26 months agoPost 49
doorman

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Sherwood, Arkansas

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2mm x 25 Bolts

I checked and only have 2mm at 20mm
I do have 2.5mm at 25mm if they would work for you??
Let me know..

Stan

AMA 2918-Team JR, Spin Blades, East Coast Scale Helicopter,Castle Creations

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10-26-2015 04:57 PM  26 months agoPost 50
BAMAGUY

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Alabama

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Thanks anyway Stan. I beleive I read somewhere that the screws in the servos were 2mm x 25mm. I've got two old ones at home and just thought about it. I'll check when I get home to see but I appreciate you checking on it.

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11-01-2015 01:15 PM  25 months agoPost 51
BAMAGUY

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Alabama

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So I went out to my old flying club yesterday and they were nice enough to allow me to fly. I got to see the completed heli for the first time in the air and it looks really nice.
The wind was around 10mph but constant so I could adapt to that well enough. I flew it around a little and was making a banked turn and something fell off. It was the tail fin top.
I was worried about just how strong that joint would be when I was building it and, as I found out today, it wasn't strong enough.
I thought about it last night and this morning I decided to clean the joint back down to the wood, drill holes in front and back of the tab, ca glue the joint and the screw holes. I got it together and repainted it.
It shouldn't give me a problem again, while in the air at least.

Should have taken some pictures at the field on the short grass but didn't think about it.
Anyway, here it is on the bench.

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11-01-2015 02:43 PM  25 months agoPost 52
doorman

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Sherwood, Arkansas

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Good News!!

Glad to hear you got it up and flying...
The top tsil on these is always tough to get secured, but it it sounds as if you have that solved too
Now it's time to have some fun and enjoy your new machine!!
Good luck,
Stan

AMA 2918-Team JR, Spin Blades, East Coast Scale Helicopter,Castle Creations

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11-01-2015 02:54 PM  25 months agoPost 53
BAMAGUY

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Alabama

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I should be getting the Castle lying in this week so I can program the governor. Something else to try and figure out, never ends but I guess that's what makes this a hobby, right?
Thanks for everyone's help

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11-01-2015 03:30 PM  25 months agoPost 54
coptercptn

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Mesa AZ. USA

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The castle link is very easy to figure out, and the information you will get from it is priceless !! Can save many helis and airplanes by "knowing" what is going on ( electrically) rather than guessing and hoping it's right...?

Home of the "Sea Cobra".....

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11-01-2015 04:13 PM  25 months agoPost 55
doorman

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Sherwood, Arkansas

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Castle Link

If your not comfortable setting up the esc the first time, I will be glad to go over it with you by phone as you set it up... just let me know..
Important info needed:
Motor kv
Pole count of the motor
Tooth count on both the main gear and the pinion.

With this info, the process is very easy as Jim stated..

Stan

AMA 2918-Team JR, Spin Blades, East Coast Scale Helicopter,Castle Creations

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11-04-2015 02:43 AM  25 months agoPost 56
BAMAGUY

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Alabama

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Arming esc after govenor set up

I appreciate Stan helping walk me through the castle link govenor set up. Have a question about the arming of the esc though. We set up normal mode and throttle up in the radio but in normal mode I can't get the arming signal of the esc, however, I can get it to arm in the idle up mode by turning off TH then right back on. TH is set to -10 at the moment. The Radio I've got is the Dx6i.
Any suggestions?

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11-04-2015 06:05 AM  25 months agoPost 57
Krachdumy

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Pembroke Pines, FL.

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Hi Bamaguy,

Try moving the throttle trim down.

If that doesn't work, go to travel adjustments. Select throttle and change the value from 100 to 110. Make sure the throttle stick is all the way down before you change it to 110.

Go into the menu and select monitor. Look at the throttle level. Adjust your throttle trim or travel adjustment to make the throttle level lower.

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11-04-2015 01:22 PM  25 months agoPost 58
BAMAGUY

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Alabama

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Krachdumy, I tried moving the low throttle travel to 110 and that didn't work so I put it back.
As I was checking things out, this morning, only had a few minuits before work, and I got into a bad situation.
When it armed this time, it started spooling up and I tried switching the TH switch and that didn't make a difference. Now I've got a heli, on the bench and the blades are spinning. It's a good thing it's holding 0 pitch. I was holding onto the boom with one hand, trying to stay out of the way of the blades and had to decide to turn it loose and was able to reach under and using ring pliers, was able to disconnect the battery.
Wow, did this ever rattle my nerves. I was shaking like a leaf.
Just walked away til I can check it tonight, with the rotor blades off of course.
This could have gotten ugly, quick.

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11-04-2015 02:37 PM  25 months agoPost 59
coptercptn

rrElite Veteran

Mesa AZ. USA

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You definitely have something wrong in your setup for that to happen!!? And throttle cut must not be "enabled"???? Check your flight modes and throttle hold/cut...

Home of the "Sea Cobra".....

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11-05-2015 12:29 AM  25 months agoPost 60
BAMAGUY

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Alabama

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I watched the video about calibrating the throttle end points in the radio once govenor is set up. I haven't done that. Is that necessary?
I've checked everything out this evening and couldn't get it to start up like it did this morning. The TH worked just as it should every time in either normal mode or idle up mode.
I did remove the main blades this time though.

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HelicopterScale Model RC Helicopters › MD500E BUILD QUESTION
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