I found this one a hard one to use the search feature on so my apologies []

My question is: how do you guys, in general, secure the receivers and batteries in the fuselage ?

I have a Kadet Senior that I'll be balancing today and realize the receiver and battery may get "seperated" by a few inches to assist in achieving the correct center of gravity. So what technique(s) do you use for securing the receiver and battery whether seperate or together ?

I understand the need to wrap the bejebus out of 'em in foam but how then do you secure the foam bundle to the "cabin". I would think it's particularly important with the battery as if that were to shift around in flight the CoG could be altered significantly, or worse, become unplugged.

Thanks [8D].

velcro!

Odd who didn’t get any hits on this. Velcro straps seen to be a favorite, but you can do so many things it’s hard to say. I just wrap in ½ inch foam place where I like it then typically use a balsa stick glued across frame to hold it their. Just remember one you don’t want it flying around an get tangled up with servo’s and two not in too tight so the foam padding stops working. PS the battery and rec can go any where but typ. rec. close to servo’s and battery moves to the CG.

Joe,
In my Eagle II I glued a tray of 1/16" plywood across the bottom of the fuse on the corner braces.
I reinforced the front and back of the tray with strips of 1/16" plywood.
I then screwed small, slightly opened, eye screws into the four corners of the tray where it is reinforced.
The battery and receiver are placed on the tray with rubber bands crisscrossing over them from the corners.
You will have to balance the plane first to see where to place the tray.
I hope this helps,
KW_Counter

Velcor with one side of being sticky backed. You can then move your battery and reciever forward or backward at will. Typically the battery goes up under the fuel tank, so then you just lay some foam on the tank compartment floor and pack foam around the battery. I usually wrap my battery in foam and tape it on so as to protect the battery in the event of a crash. I also will wrap the reciever as well. Once again, Velcro strips will hold this foam in place. Good Luck, Dave

Velcro works well. You can also use small eye hooks and rubber bands, popcycle sticks glued to different areas, or if its a tight space cut styrofoam blocks and jam them in tight around the item. Just remember that NORMALLY you want the battery in front of the reciever. If you do it the other way and crash >>>> your battery just wiped out your reciever !!!! ENJOY !!! RED

Velcro or eye hooks and rubber bands. Both have been mentioned above and I use both all them. A lot of times how you secure your receiver and battery will vary from plane to plane. You have to work with what you have in each plane to secure it there. So there really isn't one "always correct" answer.

Hope this helps

Ken

If I want to ensure that the component won't move, I use nylon zip ties through holes in adjacent structure.

Cheers!

Jim

Nylon zip ties, small pieces of balsa strips and foam.

Thanks guys, you've given me a lot of good ideas.

I'll see which one best fits the Kadet Senior [8D].

I put a 3/32" or 1/8" balsa platform in the fuselage. Then wrap the battery and receiver in foam. Then wrap the foam with a couple (2) layers of masking tape. Get some INDUSTRIAL STRENGHT self adhesive velcro. Adhere one piece to the battery/receiver. Have the other piece LOOSELY attached to the 1st piece. Move them around until you find the correct spot.

Once you have found the spot, remove the covering from the adhesive on the loosely attached piece. GENTLY press in place.

For this step you may need to use the tip of a #11 blade to hold the loosely attached piece in place. Remove the battery/receiver and firmly press the second piece of velcro in place.

THIS IS THE KEY STEP. The adhesive on the velcro is going to loosen its grip on the balsa in a couple of months (I have had no problems with the masking tape after 1 1/2 years). To prevent this take some thin CA and go around the edge of the velcro attached to the balsa. Let dry for a few hours and put your battery/receiver in place, pressing firmly. If you need to remove either one, pull up firmly and it will come loose (the velcro really adheres to each other quite well). This installation will hold even if you "lawn dart" the plane. Don't ask how I found out about that part.

Campy,
You can increase the holding power of the adhesive on the back of the velcro by heating it with a lighter before you stick it in place.

Ken

Try the industrial strength Velcro. Home Depot has it. It takes a little while for the glue on the backing to set tight, a day or so, but it holds like iron once set. It comes in fifteen foot rolls so you might want to get a few guys together. It isn't cheap, but definitely worth it. Strenghten any balsa you are going to stick it to by CAing the area first.

I quit wraping my RX or battery pack once I went to Velcro.

Seems like the last couple of planes have needed the battery to be installed in unusual places to avoid adding dead weight for balance. I have been wrapping the battery with thin closed cell packing foam and then wrapping that with clear shipping tape.
Using super goo or similar I then glue the battery where I want it to be.
In the event it needs to be removed the tape can be cut and the battery will come out easily enough.
The RX gets held in place using any of the methods described earlier in the thread.

Another trick I had to use on one plane was to mount the battery on a light plywood stick, then wrap the battery in foam and now I could "stick" it way up underneath the tank compartment where I otherwise didn't have easy access. I then screwed the other end of the stick down in the the radio compartment where I had plenty of room.

-tychoc