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Home✈️Aircraft🚁HelicopterHelicopter Main Discussion › Battery Mounted Under Bottom Plate??
10-27-2006 07:19 PM  12 years ago
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qb7

rrNovice

Ottawa, Canada

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Battery Mounted Under Bottom Plate??
I have to relocate the primary battery on my TrexSE in order to accommodate a micro camera gimbal, transmitter, and video battery up front.

I am thinking of mounting the battery under the frame bottom plate. I do understand that a crash or hard landing will probably damage the battery. I will not being flying 3D, so performance balance with respect to that should not be an issue.

My questions for the aerodynamic wizards:
1) How will an under carriage battery affect normal hovering flight? (I believe the battery under plate will help offset the camera system weight up front.)
2) Any recommendations on how/what I can use to best mount and secure the batty under plate?

Your input is greatly appreciated.
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10-28-2006 05:01 PM  12 years ago
rotary_aviator

rrApprentice

Norway

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I think ull be fine as slong as your heli is balanced in fore/aft direction if you see what i mean. my guess is that it will be alittle nose-up pitchy in fast ff due to the low CG, and the roll rate wold be a bit slower.

You can use some thin foam between the battery and the frame to protect it, and secure it with some velcro bands around it.
Ive been using these straps and their great.

http://www.fromeco.org/Shop/shopdis...at=Accessories#


kev
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10-28-2006 05:09 PM  12 years ago
Yug

rrMaster

UK. Herts

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Should be fine. Wrap battery in foam sock and tie wrap it under the base plate. With your camera installed, the battery will have plenty of room for manouver in getting the CG right.Vegetable rights and Peace
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10-28-2006 05:18 PM  12 years ago
qb7

rrNovice

Ottawa, Canada

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Thanks Kev,

The thin foam sounds like a good cushion between the frame and batt; also would probably help with reducing vibration. Responses on other sites have been all positive.

My only concern is that the motor will sit directly above the battery, and I might get excessive heat dropped down. This I will have to play with. Thanks again.
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10-28-2006 05:23 PM  12 years ago
qb7

rrNovice

Ottawa, Canada

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Yug - foam sock sounds good. I do like the potential capability to adjust the battery fore and aft a little for CG. Thank you.
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