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Old 07-25-2008, 04:42 PM   #1
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Default battery slot filing?

so i have searched these forums for battery slot filing techniques and it looks like the consensus is hand filing at 45 angle and possibly even sealing with CA glue afterward. i am working on a the new RC12R5. are there any car specific things i should watch out for?
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Old 07-25-2008, 04:50 PM   #2
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CAing usually isn't optional. You can short the battery out on the chassis if its not done.
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Old 07-25-2008, 06:22 PM   #3
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Quote:
Originally Posted by benben10 View Post
are there any car specific things i should watch out for?
Don't drink the shock oil.
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Old 07-25-2008, 06:40 PM   #4
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I use a 1 inch sanding drum to file the slots. It is a little bigger than the battery but allows for a little play due to seperate packs not being equal after shoo-gooing them together. Slide the drum back and forth and constantly check the fitment of each slot with a single cell.

And definitely don't drink the shock oil.
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Old 07-25-2008, 10:10 PM   #5
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Use a fully assembled pack to check battery fitment while sanding. A single cell will not tell how the full pack is going to sit in the slots as a single unit. Your best bet is to have one pack that is perfectly assembled (preferably from a good battery jig) that sits flat on the table - no rocking or air gaps or warps, to check the slots with.
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Old 07-25-2008, 10:40 PM   #6
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FILING THE BATTERY SLOTS KEEPS THE SHARPE CHASSIS EDGES FROM CUTTING THROUGH THE SHRINKWRAP AND SHORTING OUT THE BATTERIES. IN ADDITION TO THE BATTERY SLOT WORK, YOU SHOULD ALSO ROUND ALL THE OTHER EDGES OF THE CHASSIS, EASILY ACCOMPLISHED WITH SANDPAPER. FINALLY SEAL ALL EDGES WITH CA TO HELP TO KEEP THE CARBONFIBER LAYER SHEETING FROM SPLITTING AND SEPERATING.
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Old 07-25-2008, 11:57 PM   #7
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What is the length and width of the cell cutout?
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Old 07-26-2008, 12:06 AM   #8
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Use a black emery board nail file. Like the ones your women uses to file her nails. They're fairly bendable, and they have a fine and courser grit side to them. You can use them wet or dry. Best tool I've used for doing any chassis sanding/filing. If your not real real careful with a dremel you'll end up eating more CF than you wanted and then your SOL.
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Old 07-26-2008, 12:53 PM   #9
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I just use a file at a 45 degree angle. Do check with a pack of cells every so often so that you do not file too much away. Personally, I keep going until the cells are flat with the bottom of the chassis, just to get the C o G as low as possible.
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