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Helicopter
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Align
Other › Motor heat heating battery
05-04-2005 02:16 PM  12 years agoPost 1
Torgeir

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Norway

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I´m getting pretty hot batteries, not damaging hot, but hot enough. The battery is placed in the frame with the motor as stopper. The align 400s is getting pretty hot, even with heatsink attached. I have som foam for wrapping in hot tubes in a guitar amp. Tried to put it in between the motor an battery, and getting some lower temperature I think. Any of you thought of this - does it help at all. There has to be some heat transfere between the battery and the motor...

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05-04-2005 02:33 PM  12 years agoPost 2
Paul_C

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Limpopo, South Africa

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Having two components that generate heat right next to each other is a bad idea - try get some distance between the motor, batt, and ESC. Putting foam around heat-generating components is also a bad idea, it will only help that component overheat.

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05-04-2005 02:38 PM  12 years agoPost 3
Gary Hoorn

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Annapolis Maryland USA

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I made a small spacer out of plastic and CA'd it lightly to the frames. It fits between the motor and battery. The extra couple of mm that it moves the battery forward causes no problems.
Gary

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05-04-2005 02:59 PM  12 years agoPost 4
loganz28

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Severna Park, Maryland

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rubber band
thats all you need. Don't waste your time with spacers and such! The heat is a non issue.

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05-04-2005 07:08 PM  12 years agoPost 5
MA Boy

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London

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i have heard of a rubber (pencil eraser) being used between the motor and battery to stop the transfer of heat.

MA enthusiast

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05-04-2005 09:38 PM  12 years agoPost 6
Gary Hoorn

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Annapolis Maryland USA

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Don't waste your time with spacers and such! The heat is a non issue.
A quick search through the Forum will reveal someone had damage on the end of a battery because of heat. At $75.00 a pop for TP2100's a little protection is not wasted!
Gary

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05-04-2005 09:44 PM  12 years agoPost 7
Torgeir

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Norway

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Thanks. Think i´ll be using some erasing rubber. The tube foame thing transferes some heat.

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05-05-2005 04:33 AM  12 years agoPost 8
loganz28

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Severna Park, Maryland

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Using a rubber band is all you need. Just keep it away from the motor. Anything you put in front of the motor will just tranfer the heat to the battery. There is no one on this board that has had a damaged battery from a hot motor

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05-05-2005 04:45 AM  12 years agoPost 9
BisonFlyer

rrKey Veteran

Winter Garden, FL

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none of those fixes really do the trick or last... this is the best way to do it. drill a hole just small enough for a wire tie through each side of the frame in front of the motor. then cut the heads of two zip ties.. put the shaft of the zip tie through both holes and slide both heads on outside of the frame to hold it. creates a nice gap between the battery and motor, and it is a durable fix that lasts. unfortunately i dont have pics of it in my gallery but if u do it nicely it works incredibly well. if u want pics let me know

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05-05-2005 11:02 AM  12 years agoPost 10
Torgeir

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Norway

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Pictures would be great! Sounded like a good way to do it.

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05-05-2005 12:22 PM  12 years agoPost 11
loganz28

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Severna Park, Maryland

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Please !
Rubberband. Less is more in this case trust me!

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05-05-2005 12:56 PM  12 years agoPost 12
docnascar

rrVeteran

Maryland, USA

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I just used rubber bands with my Align motors and slide the batteries a few mm up from the motor. They never got damaged from heat. If your motor is heating to that point where it damages your battery, then you have other problems anyway.

When I switched to the 400dh I did place a very small piece of velcro under the batteries, in addition to, the rubber band. I did this because the can of the motor actually spins and I didn't want the battery to accidentally slide back into it.

I don't think you really need a spacer or any huge mod for the batteries. It’s that old saying. Keep it simple!











....there goes that CA glue sticking to my fingers again!!!!

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05-05-2005 01:16 PM  12 years agoPost 13
loganz28

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Severna Park, Maryland

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Thanks Doc. KISS!!!!!!!

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05-05-2005 01:51 PM  12 years agoPost 14
Gary Hoorn

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Annapolis Maryland USA

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A Little Battery Protection
The first time your Heli lands on its nose and the end of your battery has a nice curved dent from the motor you will wish you had done something other than just a rubber band. The cost of a Lipo usually exceeds that of the necessary crash parts. Also a damaged Lipo can burst into flames.
Gary

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05-05-2005 02:10 PM  12 years agoPost 15
loganz28

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Severna Park, Maryland

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It has more than once landed hard on its nose. And guess what, no dent. And no spacer glued or whatever you do is going to stop that battery, its just a waste of time. Matter of fact I have crashed so hard that the battery has actually seperated from the heli and its still operational. Dented and all.
Also a damaged Lipo can burst into flames.
Thats very unlikely to happen because battery manufactures actually puncture test batteries. Go to FMA direct video section for example.

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05-05-2005 02:18 PM  12 years agoPost 16
Paul_C

rrVeteran

Limpopo, South Africa

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Just a few flights before my last incident I made a battery tray out of 4mm stiff balsa, which ran from the front of the motor mount (secured by two screws which normally hold the servo tray) to as far front as it could go (maybe I’ll take a pic when I build a replacement). This not only allowed great freedom of movement for CG, but also allowed me to use a greater variety of batteries, anyway, when it went in nose first the tray buckled and shattered, throwing and disconnecting the battery from the model. Before it hit the ground I was already thinking that the batt and side frames would be goners, given the speed it was going, but amazingly both the batt and side frames are fine, had it been in it’s usual place, it would have been trapped and most certainly would have been damaged.

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Align
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