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Nov 17, 2009, 01:50 PM
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bass3587's Avatar
Ok here is another question. As far as the yaw mechanism, I noticed that you are using a full size servo. If there any particular reason why a smaller servo or digital, metal gear servo couldn't be used?
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Nov 17, 2009, 02:51 PM
Brushless
cdi3d's Avatar
I had trouble with some ht mg servos not wanting to run through the gyro - I got some weird movement in the servo that run fine through the rx - I know Bob has used them on his smaller tricopters - I am using a full size just becasue that is what I had on hand - Mike
Nov 17, 2009, 02:52 PM
Brushless
cdi3d's Avatar
Nevermind - I thought you were talking about your tricopter - I have been using a quadcopter in Reflex

Mike
Last edited by cdi3d; Nov 17, 2009 at 03:04 PM.
Nov 17, 2009, 02:56 PM
Registered User
rimshotcopter's Avatar
Quote:
Originally Posted by zirt57
Oh, I've also started practicing with a Realflight. I downloaded a copy of a Y-UFO. I hope my Tricopter flies easier than the Y-UFO. It wants to tip over very easily.

- Jeff
Please, will you post the link?

thank you.
Nov 17, 2009, 03:07 PM
Registered User
rimshotcopter's Avatar
I did a search and located this Y-UFO: http://www.knifeedge.com/forums/down...o=file&id=9740
Nov 17, 2009, 03:14 PM
Registered User
signguy's Avatar
Quote:
Originally Posted by bass3587
Ok here is another question. As far as the yaw mechanism, I noticed that you are using a full size servo. If there any particular reason why a smaller servo or digital, metal gear servo couldn't be used?
For the dt 750's a smaller servo is overworked. Its not he gears that are the problem, it is power. Hold a dt750 while running and try to turn it. There are lots of gyroscopic forces to overcome. I do use a hextronic 9 gram metal gear for the smaller copter, and MIGHT get away with it on the DT 750 copter, but its not worth the 1-2 oz saving.

Plus, I'm cheap, and had the full size servo already

Bob D
Nov 17, 2009, 05:27 PM
Registered User
Zirt57's Avatar
Quote:
Originally Posted by reverendrichie
I did a search and located this Y-UFO: http://www.knifeedge.com/forums/down...o=file&id=9740
Yep, that's the one I'm practicing with. Damn hard too.

- Jeff
Nov 17, 2009, 06:10 PM
Registered User
rimshotcopter's Avatar
Quote:
Originally Posted by zirt57
Yep, that's the one I'm practicing with. Damn hard too.

- Jeff
Well, I believe it is better for it to be harder than easier and have a great surprise on the maiden flight.
Nov 17, 2009, 07:55 PM
Brushless
cdi3d's Avatar
Hey guys - I just finished building a hover trainer to help me to trim my tricopter indoors - Just ran a piece of monofilament through a hole in the cg - Helps save me a few props while messing around inside - Works great as a training aid also - Just attach it to the floor and ceiling - KISS method - Rather fly the real thing verse a simulator -
Hover Training Tool- (0 min 54 sec)


Mike
Nov 17, 2009, 08:45 PM
Registered User
signguy's Avatar
Quote:
Originally Posted by cdi3d
Hey guys - I just finished building a hover trainer to help me to trim my tricopter indoors - Just ran a piece of monofilament through a hole in the cg - Helps save me a few props while messing around inside - Works great as a training aid also - Just attach it to the floor and ceiling - KISS method - Rather fly the real thing verse a simulator - http://www.vimeo.com/7675445

Mike
Looking good Mike!

I like the lights. Had them on the old copter, just haven't got around to putting them on the new one.

Bob D
Nov 17, 2009, 09:11 PM
Brushless
cdi3d's Avatar
Thanks Bob - I am going to go pick up some new props tomorrow - I have been running APC 11x4.7 but I think they are to heavy for good response and might be part of my cause for power fluctuations and lose of altitude - I am going to try some 12x6 and 11x4.7 gws and see how they do - The trainer really helps save those props -

Mike
Nov 17, 2009, 09:20 PM
Registered User
signguy's Avatar
Quote:
Originally Posted by cdi3d
Thanks Bob - I am going to go pick up some new props tomorrow - I have been running APC 11x4.7 but I think they are to heavy for good response and might be part of my cause for power fluctuations and lose of altitude - I am going to try some 12x6 and 11x4.7 gws and see how they do - The trainer really helps save those props -

Mike
Hi Mike

Be careful drilling those 11X4.7 props for the 4mm shaft. I had two props come apart in flight. I think it was due to the bit grabbing the plastic and pulling through before the bit had a chance to cut. I drilled the rest on the drill press with progressivly larger bits, and haven't lost a prop again.

Bob D
Nov 17, 2009, 09:37 PM
Registered User
Zirt57's Avatar
Quote:
Originally Posted by cdi3d
Hey guys - I just finished building a hover trainer to help me to trim my tricopter indoors - Just ran a piece of monofilament through a hole in the cg - Helps save me a few props while messing around inside - Works great as a training aid also - Just attach it to the floor and ceiling - KISS method - Rather fly the real thing verse a simulator -

Mike
That's a hell of an idea. Thanks. Once I get up and running (order is still processing ) I'll have to set that up. Thanks again for a great idea.

- Jeff
Nov 17, 2009, 10:26 PM
Hillary Lied, 4 Americans Died
Dave Barrow's Avatar
Yeah, my HK order shows shipped.
signguy, can you give me the dia. of the 750 motor mount base please? I have the body and arms cut and bolted together, I can start making the yaw mount and mount discs for the other two motors. I'll post pics tomorrow, been working overtime every day so I don't have a lot of build time in the evenings. I should be able to get more done this weekend.
Dave
Nov 17, 2009, 10:36 PM
Registered User
rimshotcopter's Avatar
Quote:
Originally Posted by zirt57
Yep, that's the one I'm practicing with. Damn hard too.

- Jeff
I just tried the --UFO2 and for me, it is keeping the origination correct. The only reference is the yellow fin.


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