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mCP X Blade Micro CPx Helicopters Information and Help


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Old 02-13-2012, 06:23 PM   #1 (permalink)
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Default Bell 47G conversion

After reading in the other forum about using a Revell 1:35 scale Bell 47G as a fuselage for the MCPx, I decided to try it. I did mine in black and yellow in honor of N975B, the Bell 47G in the original "Whirlybirds" TV show from the 1950s.



It isn't quite finished yet... still have to add the tanks (or at least the outer halves). Came in at 52 grams empty and 64 grams with battery. A tad heavy, but I think 3 to 3.5 minute flights are possible without stressing the battery.

I sandwiched the 3 in 1 board between the back of the cabin and the seat cushions. The seat bottom, back and clear bubble canopy are all one unit and held in with a super magnet. I had to cut the original canopy mounts short to get them in the frame. That is the only permanent change required to the mechanics. The mechanics are held in place in the Bell with two short pieces of 2mm ID CF tubing slipped over the stubs of the canopy rods. To convert back to pod and boom, I'll just make up adapters consisting of a short 2mm ID tube with a 1.5mm rod sticking out. Slipped over the canopy mount stubs, they will replace the cut off ends.

It flies fine but you can tell it is heavier. But it look WAY COOL in the air.

BTW, the LHS here has these for $12.99. I bought two.

Oh, I used the skids from the kit but found they are too soft to hold the weight without taking a set, so I reinforced them with a length of 1.5mm CF rod and they are fine.

Paul
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Old 02-13-2012, 06:58 PM   #2 (permalink)
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That looks freak'n awesome . I want one!

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Old 02-13-2012, 07:10 PM   #3 (permalink)
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You should see it in the air..... aside from the insanely non-scale head speed, it looks pretty danged real.

I actually toyed with trying to fly it with the kit blades since they are scale length and chord and actually have a decent looking symmetrical airfoil. I figured that if I added some thin CF mat to the underside they might actually be stiff and strong enough to fly at a lower head speed. But in the end I opted against it because I could not come up with an easy way to make the root strong enough.

I've been told on the other forum that switching to 300mAH cells brings the flight time back up to a reasonable length.

Paul
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Old 02-13-2012, 07:19 PM   #4 (permalink)
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I like it alot Paul, nice work!
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Old 02-13-2012, 07:23 PM   #5 (permalink)
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Awesome job!!!! I love these scale MCPx's! be sure to post it in the scale MCPx sticky! Post a video when you can...

Scale MCPX sticky thread...
https://www.helifreak.com/showthread.php?t=357249
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Old 02-13-2012, 11:51 PM   #6 (permalink)
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That is Friggen Sweet!!! You just inspired me to find a model of the BatCopter from the 1960's TV series for a future conversion.
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Old 02-14-2012, 05:43 AM   #7 (permalink)
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Unless you are brushless, weight is a major concern. I suspect the Bell-47G might be the only doable conversion because it is probably the lightest of them all with its skeleton boom structure. I don't think I'd want to fly at much more than my current 64 grams AUW on a stock MCPx.

Paul
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