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HelicopterScale Model RC Helicopters › Any one reversed rotation on an Align quad blade head?
10-07-2013 04:03 PM  4 years agoPost 1
FiveZigen

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Toronto

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Hey Guys, I was just working on a project I had on hold while I was away for the summer and ran into a small issue. I am trying to reverse the main rotor direction on a trex500 I am putting into a 105 so that it matches the full scale. I have done this in the past with no problems on other projects. Unfortunately it appears that because of the design of the align four blade head this is not possible with out changing to a smaller set of swash lock arms (even with I have a feeling this will limit my range over the stock long arms). I was wondering if any one had encountered this before, and could possibly help point me in the right direction.

I will probably just run it CW (stock) and have the tail rotor on the correct scale side pulling instead of pushing if I can't come up with a way to reverse the head as well.

Thanks in advance

Ryan

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10-07-2013 07:35 PM  4 years agoPost 2
ferretmaster

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Casa Grande AZ USA

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I will ask the really stupid question.....Why not just run it in the opposite direction? There are plenty of "following arm" heads out there that work very well.

Looking at my 500 size Align 4 blade head I see no problem running it "in reverse" as there seem to be no directionally sensitive components.

P.S. You try it first and let the rest of us know!!

Hello...my name is Dave....and I am a heli addict.

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10-07-2013 08:07 PM  4 years agoPost 3
FiveZigen

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Toronto

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I got it to work. I modified some mixing arms and used the short side flipped over with the plastic component of the arm flipped as well. When you reverse the direction of the head you need to have the plastic arms face the other way as well or they interact with the links hence why I needed to make the shorter arms.

Here is the stock quad blade arm on the left, stock swash lock arm from FB Trex500 and the same arm cut down to the useable piece I need.

After paint, I put new bearings in as well.

Finished, You may need to clearance the plastic swash arms, as they may interact with the links.

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10-07-2013 08:29 PM  4 years agoPost 4
FiveZigen

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Toronto

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If you were to simply spin the head backwards, because the phasing is mechanically set and not adjustable on this head the phasing would now be off. Try it for your selves and you will see what I mean.

Here is the pic of how it looks stock

You see how if we spin it in the reverse direction the swash plate will now be 90 degrees behind the direction of travel instead of in front where it is suppose to be? You can't take the link off the swash and move it to the correct ball at 90 degrees ahead of the blade with out it interfering with the swash lock arm. If the washout was not part of the head you could simply flip the plastic arm and adjust the washout base so everything is cool. With this head flipping the plastic arm just has the bottom hole sticking out into space. You need some way to flip the metal arms as well to get everything jiving, which I have done above.

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10-07-2013 08:46 PM  4 years agoPost 5
ferretmaster

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Casa Grande AZ USA

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OKAY!!

Good answer!!

Hello...my name is Dave....and I am a heli addict.

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10-07-2013 10:22 PM  4 years agoPost 6
Mty-Helis

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MTY,NL,MX

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Swash phasing
I would just buy a Vbar and adjust the phasing accordingly.
Mini Vbars are running cheap used in the for sale forum!

Since you have modify it, all is good.

Felipe

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HelicopterScale Model RC Helicopters › Any one reversed rotation on an Align quad blade head?
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