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Hirobo Electric Helicopters Hirobo Lepton EX, Quark and other Electric Helicopters


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Old 07-12-2011, 05:56 PM   #1 (permalink)
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Default 450 paddles on a Lepton

What will 450 size paddles do on a Lepton? Will they make it more or less responsive? I've read where guys use them but no one really gives a good description of what they do.
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Old 07-12-2011, 07:36 PM   #2 (permalink)
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It is possible and I did it in the past. Paddles are generally all about weight. Lighter will make the cyclic super responsive and quick but at the expense of stability. This is why many go with FBL. FBL gives you the quickness without the loss of stability.
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Old 07-12-2011, 07:41 PM   #3 (permalink)
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OK.Sounds good to me. Now, what role does area play? In theory, could you go to a bigger, heavier paddle to tame a heli down? Does size matter as much as weight?

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Old 07-12-2011, 07:47 PM   #4 (permalink)
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There is a bit more than weight to paddle design...

Although, in general, a heavier paddle will yield more stabilty and a slower response, there is also area, airfoil, thickness, sharpness at the leading edge, taper, and flybar mounting position (also flybar length).

All of these things make a difference. You can have a thick CF paddle, such as a "V Blades" paddle, which is very light, yet slow, especially around center, due to its thickness and very blunt leading edge. These are also very stable.

You can have a sharp, thin paddle, of the same weight, and it will be quicker around center (sometimes too quick).

You can take that same sharp, quick paddle, increase its area, get some of the stability back, and not lose the quick response.

You can take that same paddle, and change the mounting position of the flybar and change the characteristics again (flybar closer to the leading edge=slower response; flybar mounted further aft=quicker response). Because the weight the airfoil, and the area are the same, the stability remains unchanged, only the speed of the hiller response (following rate).

I installed KBDD Paddles on every machine that I have that still has a flybar on it. They have a good combination of weight and airfoil, and provide nice quick cyclic while still being remarkably stable.

I do not know what the flybar diameter is on the Lepton (as I recall, it is a 500 sized machine). I have used the KBDD Paddles on my Atom, which has a 2.5mm diameter flybar. They provided more stability and were quicker than the stock paddles. They might help with your Lepton.
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Old 07-12-2011, 07:55 PM   #5 (permalink)
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Ah Clem

It's the KBDD paddles for the 450 that I read would work on the Lepton. What do you know of their response vs. the stock paddles?
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Old 07-12-2011, 09:21 PM   #6 (permalink)
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I would think that the paddle area would be marginally too small on the 450 paddle for the Lepton.

What is the diameter of the flybar?
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Old 07-12-2011, 09:36 PM   #7 (permalink)
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I tried them once. I didn't like it. I did find the MSH "Gorilla" paddles to be kinda nice though.

The flybar is 450 sizeish. I'm guessing 2mm. I asked KBDD a while back about making some 500 size ones with smaller holes for the Lepton and they basically said to come back when the Lepton becomes popular and that "many" use their 450 paddles on it which I just don't believe.

Last edited by prototype3a; 07-12-2011 at 09:49 PM.. Reason: typo lol
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Old 07-12-2011, 09:42 PM   #8 (permalink)
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Thanks for all the replies. Did you use all the weights with the Gorillas?

Thanks again
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Old 07-12-2011, 09:46 PM   #9 (permalink)
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I think I did, but I really can't remember. It was several years ago. I run those same paddles with the weights cut in half on my 450. Get some brass rod and you can experiment with all sorts of different weights.
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Old 07-13-2011, 10:24 PM   #10 (permalink)
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Lepton's 2mm flybar only allow 450 paddle which are all too small and worsen the cyclic response. 500 class flybar has 2.5mm hole and won't fit.

That was the reason I went FBL on my Lepton.
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Old 07-23-2011, 03:36 PM   #11 (permalink)
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Anyone find a set of aftermarket paddles that work on the Lepton? The Gorillas and the KBBD's both did not end well for me. Nothing too major but WAAAAYYYYY too fast and being uncontrollable. Going back to the stock paddles for now. Also need to get some more tail blades as I took out two sets experimenting with these paddles.
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Old 07-23-2011, 04:05 PM   #12 (permalink)
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Ouch! I'm sorry to hear that. I thought you were looking for it to be faster.
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Old 07-23-2011, 04:17 PM   #13 (permalink)
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There's faster and then there's what I just did!!!
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Old 07-23-2011, 05:19 PM   #14 (permalink)
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LOL! I remember it was pretty quick with those 450 size paddles on it. Especially the kbdd ones. It was silly sensitive. I wonder how the MA Furion 450 paddles would work for you.
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Old 07-23-2011, 06:30 PM   #15 (permalink)
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LOL Maybe the stock paddles weren't so bad after all.
Aren't the Furion paddles the same as the Gorilla's?

Looking for a tail pitch slider and some tail blades. Blades are everywhere but I can't seem to find a slider. Any hints where to look? Ron's and Heliproz are both out.
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Old 07-23-2011, 07:35 PM   #16 (permalink)
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I found the Furion paddles to be a smidge more tame than the Gorrillas.
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