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Old Feb 03, 2013, 10:33 AM
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United States, FL, Jacksonville
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Quote:
Originally Posted by Tom Peng View Post
Looks like I am not the only noticing that the swashplate is not moving enough to get any performance out of these 9116/Z101 units.

Here is a guy that did a mod to limit the movement of the swashplate up and down the shaft:

http://www.youtube.com/watch?v=PFWNckm1wN8

Here is another:

http://www.youtube.com/watch?v=mUnRZKw06U0

Hope this benefits someone else.

Tom
Doing that on the 9116 would not benefit you at all and just hinder your yaw. They did that on the 9100 to move the pivot point to the middle of the shaft instead of in front of it so that it would have better movement and be more stable hovering. But it has no yaw control at all.

When I modified my 9100 to use the 9116 swash, i did notice that the swash will want to ride up the shaft slightly, but it's not a problem. I have plenty of movement. I would say the servo on yours is probably about dead. Mine would never get the full travel, it fluttered a lot and never returned to it's center point.

I'll agree, the swash is not one of it's strong points.
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Old Feb 03, 2013, 11:21 AM
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Is it worth it?

[QUOTE=Steve

Since I have already removed 40 grams from my bird, adding the
2 ESC's and a gyro will put it back at stock weight.

I knew I did all those mods for a reason
________________________________________________[/QUOTE]

While I would love to be able to use a better tx and not have to replace main motors as often, I have to wonder if the trade-off with the extra weight is worth it.

We've done everything we could to lighten these birds to increase performance just to go back to have them flying like trucks? Now I know they wouldn't be quite as sluggish and unresponsive as stock but maybe we'd be taking one step forward and two back. If only I knew of a hobby-grade tx that would work with it!
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Old Feb 03, 2013, 12:26 PM
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Old Feb 03, 2013, 12:28 PM
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Old Feb 03, 2013, 12:58 PM
Mr. Crash and Burn
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Originally Posted by Steve_ View Post
That was the reason for the brushless motor, to cover the extra weight.
If I could keep the weight the same, the stock motor would be plenty of power.
It shouldn't fly like a truck anymore with the improvements to the head.
I would just have to turn cyclic back up. Right now it's mechanically and
electrically limited, because it would just flip around otherwise.

I feel I could easily do a loop if I had negative pitch available.
(Well, probably not me, but a good pilot could)

In reality, it probably will work like crap. But nobody knows for sure
until they try it.

You can always put it back to stock if it does not work.
I want to see how it flies with a normal RX, that does not
move servos for you Does it really fly that poorly that it
needs to "help" you fly?

I wish I had 40 hours days and 55 gallon drums of coffee to play
with this stuff continuously
yea i know how you feel wish i had the money time and parts oh and a few cases of redbull and some great ppl on here to give me advice i believe we could make a very awesome 9116
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Old Feb 03, 2013, 01:02 PM
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Old Feb 03, 2013, 01:22 PM
Mr. Crash and Burn
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Quote:
Originally Posted by Steve_ View Post
Lets save ourselves all this trouble, and I will pop the 9116
head into the HK250GT and see if it flies.

This will address the weight issues, and I won't have to buy
anything. I can use the stock tail. It has more power, but
responds similar to the DD tail.

Now to find bearings. The 9116 is 4mm, and the HK250GT head
is 3.5mm.

I doubt they make them that thin. I might be able to use the 250GT
shaft with the 9116 head if I find correct tubing to use as a sleeve.

I'll figure it out. I have a box of bearings and parts from 2 different
helicopters that Balr14 gave me. Bunches of different shafts,
bearings and gears. I can probably make something work.

Wait a minute, I know why I was stuck here... the shafts are hardened
steel, and I would have to drill a hole for the 9116 top shaft. That
cheap plastic part is too weak for grub screws.

I could always sacrifice some parts, and glue it all together
I only have one top shaft, if it does not work, I will have 2 helicopters
down, which is completely unacceptable
that or look around your wife might have some smile windchimes that would work as a main shaft thats what i used on my 9116 till my parts came lol
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Old Feb 03, 2013, 01:31 PM
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Old Feb 03, 2013, 01:37 PM
Mr. Crash and Burn
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Originally Posted by Steve_ View Post
I got rid of her years ago. Some other sucker pays for her lipstick now.

I will die alone, and enjoy every peaceful second of it.
hahaha i hear you there ill never remarry i don't have to hear the nagging that comes from a woman and if i wanna go out and fly and drink with friends i don't have to anser to anyone but the wind chime idea did work for me was really easy to bend in a crash but it did keep me flying for a few days and a few crashes and im trying to figure a way to extend the width of the airframe of the 9116 to make it where you can put custom electronics in ti and do away with stock pcb and brushed crap motors
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Old Feb 03, 2013, 01:51 PM
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Old Feb 03, 2013, 01:55 PM
Mr. Crash and Burn
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Originally Posted by Steve_ View Post
I have work to do, so I probably won't post an update for a bit.
I'll order some spares, and I will pick this up when I can.

For now, my 9116 flies better than stock, and has a nice sound
with the trimmed blades.
can you get a good pic of the trimmed blades as a guide line for ppl
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Old Feb 03, 2013, 03:22 PM
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Old Feb 03, 2013, 03:51 PM
Mr. Crash and Burn
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Quote:
Originally Posted by Steve_ View Post
My trimmed blades only work if your 9116 weighs
200 to 215 grams with canopy.

They were trimmed because as you remove weight, it
needs less head speed to take off, and will hover at
a lower throttle setting (35 to 40% for mine).

A slower spinning head provides less stability, so
trimming the trailing edge of the blades reduces pitch,
allowing a higher rotor speed at a hover.

The final blade configuration I ended up with is a slight
taper (less taper than stock) with the blades measuring
18.4mm wide at the tips and 20.4 wide at the grips.

I used a sharp set of scissors to rough cut, and then a
flat surface and a sheet of 180 grit sandpaper to get the
final shape. Then I polish them up with some 400 grit.

It seems to make them tougher, I lost track how many
blades strikes I've had with them.

My kid has the camera listing stuff on ebay, or else
I would take closer pictures.

https://www.youtube.com/watch?v=wZVtciJ03yk
those blades look almost what you would find on a cp heli of that size looks really nice
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Old Feb 03, 2013, 04:56 PM
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Quote:
Originally Posted by Pa flyer View Post
They will work but a better option is the Turnigy 1440A servos from HobbyKing at $3.39 each. Others on this forum said that they are much better than the stock ones. I have two on order myself.
A potential problem with the Turnigy's is the servo arm throw looks to be quite a bit shorter than the stock items. So far I have found them solid plus reliable but suspect they might limit overall swashplate movement compared to the flimsy stock servo.
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Old Feb 03, 2013, 05:04 PM
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