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RC Aerodyne A-109 500 size build log.


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ferretmaster
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Joined: 19 Sep 2010
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Location: Casa Grande AZ, USA. 66 and yes! Heli's reverse aging!!

PostPosted: Sun Sep 09, 2012 12:46 pm
PostPost subject: RC Aerodyne A-109 500 size build log.
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Here is the first of my SM/Aerodyne A-109 build log entry's.

Here is what is in the box. Plastic retracts are installed to see how they fit. Fit is Ok, but would not trust them to the first hard landing. Replaced them with Hobby King all aluminum retracts. Work perfect!

Out with the old....
In with the new.
With a little Dremmel work on the fuse and a bit of patience they work great!! The Turnigy Servo Speed Regulators are highly recommended. If you have retracts and want to slow them down from the Bang-Bang of on-offs...these work great and are really inexpensive.

Next up....fitting the mechanics....SHOULD BE FUN!!


Last edited by ferretmaster on Sun Sep 16, 2012 3:47 am; edited 1 time in total
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tombo242
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Joined: 04 Nov 2008
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Location: Santo Estêvão, East Algarve, Portugal. Now 82, but still feels 22.

PostPosted: Mon Sep 10, 2012 12:21 am
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Looks like you're off to a good start there Dave, waiting with baited breath for the next episode.
Should be a great build this one.

Tom.
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pjdog
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Joined: 12 Jan 2010
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Location: Hudson, Florida, USA

PostPosted: Mon Sep 10, 2012 2:59 am
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I like it.

jack
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ferretmaster
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Joined: 19 Sep 2010
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Location: Casa Grande AZ, USA. 66 and yes! Heli's reverse aging!!

PostPosted: Tue Sep 11, 2012 3:29 am
PostPost subject: Bit of a snag with the mechanics.
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Okay guys...I need some help on this one.

While getting ready for dry fitting the mechanics I remembered that the angle of the main rotor grip links was not at all to my liking. The angle is way to extreme. Now is the time to find a solution.

The biggest issue I have found with the CopterX CX-3X1000 and Tarot YXZ 3 axis gyros is that they lack electronic phasing ability. Not an issue for the two blade guys, but for the three, four and five rotor applications setting the phasing correctly can only be done mechanical if the transmitter or 3 axis gyro will not adjust electronically. I am committed (some will say should be committed) to Walkera and their TX does not adjust for phasing.

I am using the CopterX 4 blade heads and when I adjust the phasing to 90 degrees the ball grip links are at way to sharp of an angle. None have popped off....yet.... but I see them as an accident waiting to happen. The only solution I have been able to come up with is to use balls with a longer stand-off (see picture one)than the regular balls (see picture two).


If you look close you will see number two with the short stand off has a more radical rake and just makes me nervous to use it this way. Picture one is much more of a straight shot and superior to the factory length ball.

My problem.....I only have one of the long stand off balls and need four for this project and could really use twelve to twenty if they can be found and the price is right. I have picked up bits and pieces over the years and have no idea where these came from...Align?...Tarot?....HK?.....looked at them all and cannot find them.

Details.....standard M4.8 ball, M2 threads and the stand off is M8 from shoulder at the threads to the underside of the ball. This size is PERFECT, but something a bit shorter may still work. Any ideas guys?

The short (close) and the long (to the viewers left) of it!

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ferretmaster
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Joined: 19 Sep 2010
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Location: Casa Grande AZ, USA. 66 and yes! Heli's reverse aging!!

PostPosted: Wed Sep 12, 2012 5:41 am
PostPost subject: Build Day three update
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I will start with a couple of shots of how the metal retracts turned out....from the inside.




Worked out pretty well and these retracts are STOUT!

I still have the same issue with the main link balls. Hey guys...need a little help here!! Decided to go ahead with the dry test fit as the frame goes in and out so many times it really makes no difference when I do the links.

The next shot is the donor mechanics after being stripped for install.



As usual there will be a lot of stuff left over. Took me awhile to get used to this fact as my father would preach to me when doing car repairs "..no left over parts!" Next is the fuselage waiting for the fitting.



Here she is for the first trial fitting...lookin' good so far....!



This is just about perfect! If you look close you can see it even has a few degrees forward tilt on the main rotor. It needs to come up about another 3/8 inch (10MM for you "other" guys.) to get the right scale height, but would work right where it is!

A final shot of the dry fit with nose attached. Just had to try it to see how it looked.




Just for size reference, that is a 24 inch cutting mat. The more I work on this bird the more I am inclined to leave it in the Coast Guard colors.

Here is my South African cammo scheme I am thinking of.




Progress IS happening!!
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chopper54
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Joined: 15 Jan 2010
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Location: suffolk UK aged 61

PostPosted: Wed Sep 12, 2012 6:39 pm
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Thats looking really great. Choosing the colour scheme must be difficult as they both look superb.
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Burgess
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Joined: 27 Mar 2012
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Location: Wales

PostPosted: Wed Sep 12, 2012 7:56 pm
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ferretmaster

Size you've given,
standard M4.8 ball, M2 threads and the stand off is M8 from shoulder

In the Align flybarless linkage set there are two this size:
Linkage ball A(M2.5x3.5) x 2( 4.75x8.18mm)

http://www.align-trex.co.uk/500pro-flybarless-linkage-ball-assembly-h50171-p-2993.html

Try the Align agent in your area they may have four of that size
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ferretmaster
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Joined: 19 Sep 2010
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Location: Casa Grande AZ, USA. 66 and yes! Heli's reverse aging!!

PostPosted: Wed Sep 12, 2012 9:43 pm
PostPost subject: Burgess ROCKS!!
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Those are EXACTLY what I need.

The words are short....Thank You!

The gratitude is endless!
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tombo242
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Location: Santo Estêvão, East Algarve, Portugal. Now 82, but still feels 22.

PostPosted: Thu Sep 13, 2012 12:40 am
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Just a compliment on the build Dave.
It's looking GREAT! I love it!

Tom.
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ferretmaster
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Joined: 19 Sep 2010
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Location: Casa Grande AZ, USA. 66 and yes! Heli's reverse aging!!

PostPosted: Thu Sep 13, 2012 12:49 am
PostPost subject: To those following this build.
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For those following this build, Thank You for the words of encouragement.
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admiral
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Joined: 20 Mar 2009
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Location: Brisbane, Australia

PostPosted: Thu Sep 13, 2012 3:00 am
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Hi Dave,

Looking great, following it with interest. Love the SA colour scheme, the only problem I have with camo colour schemes is that they really work, the area I fly in has a band trees around one side of the oval and I have trouble with orientation, if I let the Helicopter get too far out with the trees in the background. Not suggesting you change, just something to consider when you fly it.
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ferretmaster
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Location: Casa Grande AZ, USA. 66 and yes! Heli's reverse aging!!

PostPosted: Thu Sep 13, 2012 3:21 am
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admiral wrote:
Hi Dave,

Looking great, following it with interest. Love the SA colour scheme, the only problem I have with camo colour schemes is that they really work, the area I fly in has a band trees around one side of the oval and I have trouble with orientation, if I let the Helicopter get too far out with the trees in the background. Not suggesting you change, just something to consider when you fly it.


I hear every word you speak admiral. I have flow a 450 size A109 in camo up in Washington state and if it were not high and close, inside 200 yards tops! orientation was lost. PERIOD!

One blessing of being here in Arizona is forest camo does not present the same orientation difficulty. THERE ARE NO TREES! A few creosote bushes and various cacti, but that is just about all that grows (wild) in my little corner of the desert.
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tombo242
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Location: Santo Estêvão, East Algarve, Portugal. Now 82, but still feels 22.

PostPosted: Thu Sep 13, 2012 4:45 am
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Back WW2 Dave, the Germans used to say about war planes:

If it was blue it was English.

If it was silver it was American.

If you couldn't see it it was German.

Says a lot for a bit of camouflage. Me? I like the 'rescue' red.

Tom.
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ferretmaster
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Joined: 19 Sep 2010
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Location: Casa Grande AZ, USA. 66 and yes! Heli's reverse aging!!

PostPosted: Thu Sep 13, 2012 7:34 am
PostPost subject: Silver vs camouflage?
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The reason that the Americans at least the USAAF, toward the end of the war in Europe and in the Pacific, stopped painting their aircraft the standard "olive drab" (I need to look up the real mil spec name for it) was the utter and COMPLETE air DOMINANCE they had gained by very late '44-'45 made camouflage paint a secondary consideration to the speed and fuel range increase that was gained by leaving the aircraft in natural aluminum.

Just some more little known fiction and fact out of the ferretmasters almanac.
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ferretmaster
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Joined: 19 Sep 2010
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Location: Casa Grande AZ, USA. 66 and yes! Heli's reverse aging!!

PostPosted: Thu Sep 13, 2012 7:55 am
PostPost subject: Re: Burgess ROCKS!!
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ferretmaster wrote:
Those are EXACTLY what I need.

The words are short....Thank You!

The gratitude is endless!


Burgess, my order went out today. Hope to see them by early next week. Found them at AMiain Hobbies here in the USA so saved a lot on freight.

Thank you again for the lead on the part number for the link's. This forum is AWESOME!!!!!

I did a bit more detail work today. No photos as they would be utterly boring! I am using the Full House Heli (from RC AERODYNE) that is the same as the TAROT and CopterX and HK offerings of the TRex 500 xxx clone. The unfortunate part is that their mechanics are anodized a bright blue in color for all the aluminum components and it took me a while to wire brush, with a dremel tool, the tail rotor assembly so as to be back to the natural aluminum color. They may get a touch of paint in final assembly to match the chosen color scheme (1 vote for S. African...1 vote for USCG....so far!) but the process was B-O-R-I-N-G! so no photos.

Later Y'all

P.S. I was also going to post this build on some other forums that I am active on but decided against it as the Admin made this "Scale Forum" for us.

Besides...Those other guys are a bunch of snobs, the truth be known.
In the scale world, if you are not building a scratch built 3:1 scale, naturally aspirated five stage benzine powered power plant with full cockpit detail worth at least $2,500 USD minimum AND have built the fuselage up from blueprint-auto cad- foam plug-fiberglass mold to finished fuselage blank.....well you are not a Scale Heli Builder.....just some pretender.

Here's to us![/b]
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