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HelicopterScale Model RC Helicopters › !!! Big Scale Project in Litle Mini helicopter New​Video!!!
02-18-2011 01:55 AM  6 years agoPost 21
helibuff

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Mascouche, Quebec,​Canada

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hi Krumrick2

That is so cool. I have one halve of the mold that is done on my project

Yvon (Helibuff)

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02-18-2011 02:06 AM  6 years agoPost 22
Krumrick2

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THATS IS COOL

Please!!! I want one of this ....PLEASSEE !.

My next project for big 700 size is an Agusta 109...later I will post photos...

Manuel

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02-18-2011 02:28 AM  6 years agoPost 23
helibuff

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Mascouche, Quebec,​Canada

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Well who knows we might trade a fuse for a 4 blade rotor head

Yvon (Helibuff)

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02-20-2011 01:56 AM  6 years agoPost 24
Krumrick2

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hello Helibuff,

Nice idea...we can talk about...

last two days was working full time in the rotorhead, I make a simple design, easy to build and manteain too...

The main hub in aluminium, the spindle shaft are 2,41 x 15 mm Allen bolts, and I use the steel servo spacers ( ...in the photos). I use short ball links in the blade grips to avoid movements interferences.

I like to make the top dome scale in Aluminium too..

The blade grips are the original by Align, the follower is a modifications of the original wash out of the kit. The swash plate need to modify a lot to install 6 ball link ( 5 + 1), just use the Dremel to cut off the original ball link extensions, milling a aluminium ring, then drill an bolt the ball links.

continue...

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02-20-2011 02:03 AM  6 years agoPost 25
tobsam

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UK

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That looks really good Manuel.

You have so many projects on the go I don't know how you find the time lol but I am very pleased you do as it is great watching your work progress.

Steve

If you build it scale then fly it scale.

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02-20-2011 02:29 AM  6 years agoPost 26
Krumrick2

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Hi Steve,

Yess...indeed too many projects, only way is work by especific time each one, this litle projects like to work at night.

I'm waiting a tool that broke this week, then I continue the retracts. I need to work more in the Bell 222 project...

Best regards,
Manuel

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02-20-2011 11:57 PM  6 years agoPost 27
helibuff

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Mascouche, Quebec,​Canada

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Hi Krumrick2

Yes you were right it looks easy to make a 4 blades rotor head, very ingenious.

By the information I see it is a rigid rotor head no more rubber tamper is used.

Yvon (Helibuff)

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02-21-2011 03:10 AM  6 years agoPost 28
Krumrick2

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Hi Helibuff,

the rotorhead is not fully rigid, there is a litle articulation in the blade grips, help in control and tracking ( yess. help a lot to manteain a good tracking in the blades).

I discovered this by accident, now I leave a small movement in all my heads, almost no more tracking issues.

...continuing the build...

I took the original washout, cut the arm close to the bearing...

and use the washout hub too, making a cut, drilling and use a 1,45 mm bolt to secure to the mainshaft in position...

Note that the head is mounted with angled links to correct phasing...

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02-21-2011 04:23 AM  6 years agoPost 29
helibuff

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Mascouche, Quebec,​Canada

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Hi Krumrick2,

Thank you for all of that info. I am drolling on my keyboard

Yvon (Helibuff)

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02-21-2011 07:29 AM  6 years agoPost 30
Mojave

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Palos Verdes, Ca.​USA

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Liking this little project, very cool! I noticed the pic of you center drilling the rotor hub for the spindles in the vise. How did you index the other 4 points? Did you transfer the part to a camelback, then drill it, or did you just plot the 5 points and eyeball it?

All helis and planes have an expiration date stamped on them...you only find it after you crash!!

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02-21-2011 01:34 PM  6 years agoPost 31
Krumrick2

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Hi Mojave,

Good question...this are fully manual indexed, each drill took me 20 minutes ( four steps), the vise is high precision one, and at first I need to align with the milling machine head...far from ideal, last year I find a small indexing tool, but can not afford the payment, here all is too expensive, some times four times the cost in USA or Europe.

Even so there is an reasonable accuracy, in this last rotorhead was 0,6mm out in one tip ( measured with blade grips fixed rigid in the hub, bolt to bolt)...but, because I leave a small amount of free movement of the blade grips this is not noticeable in flight, my heads actually have not vibrations or tracking issues.

Another mods that i'm thinking is revert the rotation to counter-clockwise...

...another progress in the fuselage...

I flipped the tail to the right side...

...and I will make a new metal Turbine Exaust...

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02-22-2011 06:59 AM  6 years agoPost 32
Mojave

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Palos Verdes, Ca.​USA

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Cool. We do what we have to when the tools aren't available I'm impressed with the result that you got. It's no easy task indexing that part without a camelback. Had it been a 4 blade head, it would have been easier, but a 5 blade... I tip my hat to you, good job!

All helis and planes have an expiration date stamped on them...you only find it after you crash!!

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03-04-2011 01:34 AM  6 years agoPost 33
Krumrick2

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...nice progress today

I reverted the One Way Bearing in the Main Shaft, NOW the main rotation will be anti-clockwise like the real MD.

Curiously I never do this mod in the bigger MD's...seems that this litle guy will be one of the most detailed and close scale ever .

To revert the main rotation first I need to take off the one way bearings of the main shaft, nothing difficult to do, just carefully work.

...then revert all the links, blade grips, follower and phasing...

...At first my idea was open only the front doors , but I got excited with the idea of open the four, then cut all four ...now is too late hehe!...will need to finish !!!...But, now i'm thinking in open the turbine exaust doors too !!!...This will never end

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03-04-2011 03:19 AM  6 years agoPost 34
Mojave

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Palos Verdes, Ca.​USA

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This is going to be one of the most detailed little helis on the planet!!

All helis and planes have an expiration date stamped on them...you only find it after you crash!!

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03-04-2011 04:16 AM  6 years agoPost 35
alfie2259

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Kansas City KS, USA

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Wow this will be one "Bad Ass" 500 helicopter can't wait to see the YouTube Video of this Lil Bird with the complete Illinois State Police paint scheme. Manuel you are the Master of scale RC Helicopters "Hands Down" you are Da Man

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03-04-2011 09:22 AM  6 years agoPost 36
darrens

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United Kingdom

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Just loving this, keep it up please!

He who dies with the most toys is the winner!

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03-04-2011 04:17 PM  6 years agoPost 37
coptercptn

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Mesa AZ. USA

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very inspiring!!!!

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

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03-05-2011 01:45 AM  6 years agoPost 38
Krumrick2

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Darrens & CoptercptnMany thanks for the comments

Today I worked in the Hinges, make a few design to work more close to the real as possible..

...hard work on this litle parts!!!.

But i find the correct ones, made them in brass, in the photos can be seen how work...

the hard part is adjust the doors movements, this took me the full day, just for two doors...

...tomorrow will finish the rear doors then open the turbine exaust doors

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03-05-2011 03:46 AM  6 years agoPost 39
alfie2259

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Kansas City KS, USA

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Wow this is by far the most detailed 500 Heli that i've seen a true master at work "Can't wait" you are holding a clinic on how to build scale RC models

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03-05-2011 04:59 AM  6 years agoPost 40
Krumrick2

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Sao jose dos Campos​Brasil

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Hi Alfie,

I'm glad you like, this is yours
Every day surge a new idea about how turn more close to the real this litle guy.

Tomorrow I will finish the doors and TURBINE DOORS too !!...then I will work in others project for a week until arrive the parts I need.

Kind regards,
Manuel

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HelicopterScale Model RC Helicopters › !!! Big Scale Project in Litle Mini helicopter New​Video!!!
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