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CanoMod . Futaba-RC . A Main Hobbies

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Main Discussion > best way to level swash...
 
 
GCguru
Heliman
Location: Exit 164, NJ

I'm having a hard time getting my ccpm swash level. my 3 control arms are unequal length so I can't just make them the same.. I tried the bubble level tool but it's not good enough. what is everyone using??
-Rob
04-07-2005 Over year old.
 
 
airdodger
Elite Veteran
Location: Johnston USA

http://www.ronlund.com/Merchant2/me...uct_Code=MA0513 Chris
04-07-2005 Over year old.
 
 
GCguru
Heliman
Location: Exit 164, NJ

huh..cool.
so i guess it just aligns it to the main shaft? sounds too easy.
04-07-2005 Over year old.
 
 
Jasper7
Key Veteran
Location: Birmingham , UK

Could try this video

Set UP Videos

Steve

Jasper 7
T-Rex 600N
br>Lisa, the kids & a Morgage
04-07-2005 Over year old.
HOMEPAGE  
 
 
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Boca Bearings . Modefo's RC Helicopters . XHELI.COM

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Main Discussion > best way to level swash...
 
 
Wayne Mann
Senior Heliman
Location: United States of America

Hi Rob. Here is the method a lot of us contest types use to get the swash plate and the paddles perfectly aligned.

Not only is it important to get the swashplate level, but it is equally important to get the flybar paddles perfectly square to the swashplate. Since the paddles out run the swashplate when you give a cyclic command the paddles are the best choice as a tool to align the swashplate and for checking alignment at both ends of the collective range. Here is basically how I do it.

Put your collective stick at half stick. I generally do this on throttle hold as my collective range is maxed out there, but you 3D guys would want to do this on the idle up that you use for 3D stuff. Put a pitch gauge on one paddle and set the guage to 0. The flybar should be perpendicular to the tail boom as we are trying to get the swashplate level in the fore and aft axis first. First eyeball your swashplate and adjust the linkages and get it as close as possible. Don't forget to 0 out any sub trims and normal trims. Look at the pitch gauge against the top of the rotorhead and adjust your paddle if necessary. Now rotate the rotorhead 180 degrees and view the pitch gauge again. If it is not perfectly square to the head adjust the swashplate angle slightly by adjusting the pushrods. Realign the paddle and recheck. Adjust until you can view that paddle from either side and the gauge stays level with the head. Once this is accomplished put the gauge on the other paddle and adjust it to the top of the head. You only need to view it from one side since we have already squared the swashplate with the other paddle. Now we know our paddles and swashplate are square to each other and square to the mainshaft. Now rotate the rotorhead so that the flybar paddle is over the nose of the helicopter and adjust the linkage for right and left cyclic.

Once your through with getting everything level at half stick you can move the collective up and down while watching the pitch guage to see if you need to adjust the atv's to keep the swashplate level at top and bottom collective.

This is the way a lot of us F3C or contest guys do it now days when everything has to be perfect. Bubble levels will get it somewhat close, but the pitch guage never lies.


Wayne Mann
04-07-2005 Over year old.
 
 
Reefer
Senior Heliman
Location: ShaTin, Hong Kong

I used to use methood Wayne Mann discribes and it worked great but now this is the way how I get my swash leveled when I have a time.



When I'm in hurry, I use KSJ swash level tool with magnetic. Best tool to get swash level fast I've seen.
04-08-2005 Over year old.
 
 
Wayne Mann
Senior Heliman
Location: United States of America

Hi Reefer. I like your indicator method, but it has a serious flaw. Just because the top of the inner ring of the swash plate is true doesn't mean that the four balls on the inner ring of the swash plate are perfect. Not to mention the play in the bearing itself. Here is a test you can perform and I have seen only a few swashplates that were perfect.

Lay your swash plate on a flat surface or lightly clamp it in a vise. Now take a dial indicator and adjust it so that it just touches the top of one of the balls on the inner ring of the swash plate. Rotate the inner ring of the swash plate so that you get a reading on each of the four balls on the inner ring of the swashplate. You will be supprised at how far some of the balls can be out due to machining tolerances.

There is the reason why the method I describe is used so much by top pilots over here. It allowes you to adjust out some of these little machining mistakes and it aligns the paddles at the same time.

Wayne Mann
04-08-2005 Over year old.
 
 
JKos
Elite Veteran
Location: City of California in the state of Maryland

Well, I was going to post my method of using a dial indicator similar to Reefer. But, Mr. Mann has put a hole in it. However, I can say that having done this on three helis now, it has come out perfect on each when double checked via the method Mr. Mann suggests.

- John

MSH Protos
04-08-2005 Over year old.
 
 
Reefer
Senior Heliman
Location: ShaTin, Hong Kong

Wayne Mann,
I also use the way you described occasionally after level with dial indicator for double checking but always found that dial indicator or KSJ swash level tool is enough for me.
04-08-2005 Over year old.
 
 
fmiguelms
Heliman
Location: Portugal

I there,

where can i get one of those dial ind.?

It looks like the ultimate swash leveling tool!!!!

Cheers
04-08-2005 Over year old.
 
 
airdodger
Elite Veteran
Location: Johnston USA

Here you have one of the top competition fliers in the world answering the question and instead of saying thank you very much for the reply you say my way is close enough for me? Thanks for the info Wayne. Chris
04-08-2005 Over year old.
 
 
GCguru
Heliman
Location: Exit 164, NJ

wayne mann,
I just followed all your instructions for alignment, and reset all my subtrims etc. for the first time I was able to hover hands free for a few seconds, and my low headspeed shake is gone! I guess I've been doing it all wrong -Rob
04-08-2005 Over year old.
 
 
angelob
Veteran
Location: Harvard, IL

Thank you Wayne - I'm going to try your method this weekend on my Fury.

Angelo
04-08-2005 Over year old.
 
 
Glenn in Den
Key Veteran
Location: Longmont, Colorado area

I must have a good eye. That's all I use!



Glenn.

I'm not really an R/C pilot, I stayed in a Holiday Inn Express last night!
04-08-2005 Over year old.
 
 
Wayne Mann
Senior Heliman
Location: United States of America

Glen unless you come from the "Red Planet" and your able to leap tall buildings in a single bound your eyes are not that good. If you are not using a pitch guage or some other type of device to level the swash plate and align the paddles they are off more than you think.

Of all the methods I've seen for leveling the swash plate I like the dial indicator method the best if I wasn't going to use the method I described.


Wayne Mann
04-08-2005 Over year old.
 
 
midwestpilot
Elite Veteran
Location: Crystal Lake, IL

Wayne...

Very informative post thank you very much for the input...

As far as Glenn's comments I think he means that using his eye has gotten him by...and I agree to the sport pilot close does get you pretty far...I have only used paddle alignment tools...which only extends the paddles so you cans see them against each other. I am no F3C pilot for sure!!

But....there is always a but I do think that a properly set up heli would be easier to fly for everyone.

Keep the info a flowing.....awsome stuff

In life there is no spacebar!

Rich Erikson AMA 6175
04-08-2005 Over year old.
HOMEPAGE  
 
 
Glenn in Den
Key Veteran
Location: Longmont, Colorado area

Nope.

Not "getting by." My stuff flys perfect.

Nope - nothing's off.

I'm very meticulous with the pitch gauge for the blades but flybar, paddles and swash all done by eye.

However, is this pefect, machine leveling have to do with CCPM because I'm on non-CCPM machines?





Glenn.

I'm not really an R/C pilot, I stayed in a Holiday Inn Express last night!
04-08-2005 Over year old.
 
 
tabbytabb
Elite Veteran
Location: seattle

"my stuff flys perfect"

Man, that line almost made my choke on my breakfast.

Tabb
04-08-2005 Over year old.
HOMEPAGE  
 
 
Glenn in Den
Key Veteran
Location: Longmont, Colorado area

Quote 
Man, that line almost made my choke on my breakfast.


Hmmm... maybe your inability to eat without choking has something to do with your inability to set a swash?





Glenn.

I'm not really an R/C pilot, I stayed in a Holiday Inn Express last night!
04-08-2005 Over year old.
 
 
tabbytabb
Elite Veteran
Location: seattle

me, no way.

To quote you:

"my stuff flys perfect"
04-08-2005 Over year old.
HOMEPAGE  
 
 
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