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mCP X Blade Micro CPx Helicopters Information and Help


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Old 04-26-2012, 10:24 AM   #1 (permalink)
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Default Simple Blade Balancer for MCPX

Push a wooden toothpick through the blades. Line them up and hang them on small glasses.

A little scotch tape 1/2" from the end of the light blade and they will balance nicely.


I made this balancer as well.
https://www.helifreak.com/showthread...ight=imzzaudae
It also works very well for MCPX blades.
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Last edited by Imzzaudae; 04-28-2012 at 10:11 AM..
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Old 04-26-2012, 10:29 AM   #2 (permalink)
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I find that method works much better if the glasses are full of beer to ensure that they are stable and cannot move.. Of course, you have to drink the beer afterwards, but I put up with that.

I like to test mine at least once a day....
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Old 04-26-2012, 10:42 AM   #3 (permalink)
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Quote:
Originally Posted by UKHeliBob View Post
I find that method works much better if the glasses are full of beer to ensure that they are stable and cannot move.. Of course, you have to drink the beer afterwards, but I put up with that.

I like to test mine at least once a day....
I find that a third glass full of beer works even better....
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Old 04-26-2012, 10:42 AM   #4 (permalink)
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Default Beer balance

When I balance my blades in that manner, the blades are great but I warble and don't fly worth a darn!
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Old 04-26-2012, 10:54 AM   #5 (permalink)
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Quote:
Originally Posted by Imzzaudae View Post
When I balance my blades in that manner, the blades are great but I warble and don't fly worth a darn!
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Old 04-26-2012, 04:29 PM   #6 (permalink)
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Great idea. I will have to remember that tip.
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Old 04-26-2012, 08:08 PM   #7 (permalink)
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That is certainly better than not balancing them.

Couple suggestions...

They should be cg balanced first then teeter balanced. I prefer to do that flat rather than knife edge. When teeter balancing the weight should be added to the cg point.

With your method try and find something smoother than a toothpick. A drill bit works great.

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Old 04-28-2012, 01:10 AM   #8 (permalink)
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Yep, The best blade balancing ever seen.
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Old 04-28-2012, 04:06 AM   #9 (permalink)
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+1 Ampdraw.

That is the way I do it to.

grtz.
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Old 06-15-2012, 06:41 PM   #10 (permalink)
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Quote:
Originally Posted by Imzzaudae View Post
Push a wooden toothpick through the blades. Line them up and hang them on small glasses.

A little scotch tape 1/2" from the end of the light blade and they will balance nicely.


.
I'm afraid I'm about to get the 'dumb question of the day' award....but here' goes. What keeps the blades from simply hanging straight down on the toothpick?
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Old 06-15-2012, 06:49 PM   #11 (permalink)
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Quote:
What keeps the blades from simply hanging straight down on the toothpick?
They have to be a tight fit on the toothpick

I use a 25mm long bolt with two nuts to hold the blades together , And I find it a bit more accurate to have one leading edge up and the other down. I think with both leading edges up , the chord wise CG ends up above or below the balance point . Flipping one blade , as I show , takes care of that.

If you want to see what I am talking about , try to balance the blades with both leading edges down.

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Old 06-15-2012, 07:33 PM   #12 (permalink)
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While monitoring battery test today I decided to give this method a try. It works great, I used the end a 2-56 treaded servo to control surface rod and while I placed two 2-56 nuts on it I found them unnecessary as the rolled thread rod is a perfect light threads into blades fit. I just flew a set I balanced and I can tell a big difference even though they were not off much at all.HS sounds higher and full collective punch outs to 100 feet or so are faster. Heli is als much quiter as in no vibration sounds thru the canopy.
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Old 06-15-2012, 08:20 PM   #13 (permalink)
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Thanks for the response. How funny, I did something very similar, used a bolt and two nuts and gently pressed the blades together so they stayed horizontal.

I again have to thank Imzzaudae for making this and so many other threads. My MCPX was flying pretty good all along, but I did notice an ever so slight blur in the main disc while it was flying, like the two blades were not exactly in the same plane. Also more recently I noticed a fast vibration in the that made the tail fin look like a blur.

Today I followed this thread and balanced my blades, and the 'maintenance' thread and did all of the lubrication that was suggested. The very next flight I had absolutely no vibration, and the main disc looks perfectly aligned....like 2 dimensional. Really great info and very much appreciated.

Last edited by 720Jeff; 06-16-2012 at 12:51 AM..
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Old 03-05-2014, 06:37 AM   #14 (permalink)
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Default Simple Blade Balancer for MCPX

I don't get the toothpick. Whats holding the blades up? If they are first taped together how does the tape not throw off the balance. The 2nd one i get. You cinch down the nuts. Neither example explain this. They need to be straight.
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Old 03-05-2014, 07:50 AM   #15 (permalink)
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Quote:
Originally Posted by myvrodrocks1 View Post
I don't get the toothpick. Whats holding the blades up? If they are first taped together how does the tape not throw off the balance. The 2nd one i get. You cinch down the nuts. Neither example explain this. They need to be straight.
From my experience, toothpicks are generally tight enough in the mcpx blade roots to prevent them from falling down. I've had to try a couple toothpicks once before I found one wide enough.
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Old 03-05-2014, 10:02 AM   #16 (permalink)
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Early on I went through the blade balancing thing with my mcpx's because I did it with my 450 which I feel is a lot more critical being a ccpm heli. I finally gave up as I saw no real benefit and if I had a set of blades that were way off I tossed them aside rather than devote time to trying to balance the little things. Both mine fly perfectly fine, no vibes and not one blade has been balanced. I can tell you right now on both ships the blades are not balanced and they fly fine.
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Last edited by firedude52; 03-05-2014 at 12:42 PM.. Reason: typo
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Old 03-05-2014, 10:06 AM   #17 (permalink)
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If you’ve busted your butt checking for problems and still not happy, try switching the blades (switch side-to-side). No set of grips are perfect. No set of blades are perfect. The imbalanced blades may match up with an opposite imbalance of the grips.

Three things can happen. Nothing will change. It will get worse, It will get better. If it smooths out, you’re done. If not, switch back.
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