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A123 A123 Battery Support


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Old 04-12-2009, 10:30 PM   #1
gww528
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Default A123 10S2P Knight 600e

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Originally Posted by Chris
<snip>

So tell me how you have the 10S2P arranged in your Knight? I've been looking at mine, and it looks like the little angled frame separator will need to go to the bottom of the frame, and I'll need to figure out some way to get a velcro strap at the back for the rear pack. Other than that, it looks like it should be pretty easy to try it.

I actually flew mine on 10S1P and the voltage worked great with the stock gearing and motor, but of course the pack was pretty unhappy pumping out that much power and the flight was short.
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You are correct, the angled frame is moved to the bottom of the frame. I use to have the Castle HV85 there but moved it to the outside side frame. This will leave you a clean open space from the motor to the front. A 10s1p (5x5) will fit there and another 10s1p will sit in front of it hanging from the battery support. These will run in parallel to give you 10s2p. Tons of power & nothing gets hot. i.e. battery, motor, ESC
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Old 04-13-2009, 07:14 AM   #2
JustPlaneChris
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Ah, so you're actually sitting the pack on that frame spacer, not suspending it from the top like the forward pack! Excellent.

OK, I see an experiment coming up with my Knight. Sorry you had to try it first, I think you had your Knight before I did.
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Old 04-13-2009, 07:52 AM   #3
gww528
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Originally Posted by JustPlaneChris View Post
Ah, so you're actually sitting the pack on that frame spacer, not suspending it from the top like the forward pack! Excellent.

OK, I see an experiment coming up with my Knight. Sorry you had to try it first, I think you had your Knight before I did.
I made a little angle bracket with velcro. On the backside corner of the battery there is another piece of velcro. This way it is very easy & quick to shove the battery in and not worry about it rubbing against the motor. Then just tighten the velcro strap against the bottom bracket and that battery is going nowhere. You know how to hang the other battery in the front.
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Old 04-13-2009, 07:53 AM   #4
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Brilliant! I'll just need to find another spot for my BEC, since it currently sits on the frame spacer.
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Old 04-14-2009, 09:49 AM   #5
kgfly
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More photos with and without the packs mounted would be nice to see.
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* MSH Protos Stock motor/15t/Align75/Align DS510/GL730+DS520/7s A123 2300
* TRex450CF/430L/12t/CC45/HS65mg/L2100T/KP 3s 2200 25C or 4S LiFe
Previous rides: HX242, W5-4, TRex450(HDE), TRex450(SE), QJ-EP8v2, BCX2 ,Logo10, Hurricane550
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Old 04-17-2009, 10:13 PM   #6
JustPlaneChris
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Originally Posted by kgfly View Post
More photos with and without the packs mounted would be nice to see.
You're right, Kenneth. How about these?

I haven't flown it yet, but it's ready to go. AUW is a hefty 9 lbs 8 oz / 4.3kg, which is 1 lb 3 oz / 528g more than my fully fueled Knight 3D, and 1 lb 8 oz / 680g heavier than when carrying 8S 3700 lipos. The 600E actually has more horsepower available than the nitro, but the disk loading will obviously be higher. If I like the power level, I can always get some Mavrikk G5 Pro 620 wide chord blades for it.
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Old 04-17-2009, 10:37 PM   #7
gww528
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Originally Posted by JustPlaneChris View Post
You're right, Kenneth. How about these?

I haven't flown it yet, but it's ready to go. AUW is a hefty 9 lbs 8 oz / 4.3kg, which is 1 lb 3 oz / 528g more than my fully fueled Knight 3D, and 1 lb 8 oz / 680g heavier than when carrying 8S 3700 lipos. The 600E actually has more horsepower available than the nitro, but the disk loading will obviously be higher. If I like the power level, I can always get some Mavrikk G5 Pro 620 wide chord blades for it.
Pictures?! You do not need my pictures, when you have Chris's. Nice pictures, that is my exact setup. BTW nice bracket also. Looking forward to hear how you like it. What will the 620mm wide chord blades do for you?

Thank you
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Old 04-18-2009, 08:14 AM   #8
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Pictures?!Nice pictures, that is my exact setup. BTW nice bracket also. Looking forward to hear how you like it. What will the 620mm wide chord blades do for you?
I thought you might like that bracket, it's left-over scraps from a real airplane project from a few years ago (as are the rivets holding it to the bottom plate).

The 620s would just help lower the disk loading a little, since it's carrying more weight. I'm not going to order any until I see how it feels in flight on the 600s.
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Old 04-18-2009, 08:22 AM   #9
kgfly
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Thanks Chris. Wow, that sure looks like a lot of weight to be hanging off an unsupported cantilever right out the front of the heli. It looks as if the CF plate would snap off in a hard landing, taking the Rx with it and maybe ripping some servo leads, but of course looks can be deceiving.
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* MSH Protos Stock motor/15t/Align75/Align DS510/GL730+DS520/7s A123 2300
* TRex450CF/430L/12t/CC45/HS65mg/L2100T/KP 3s 2200 25C or 4S LiFe
Previous rides: HX242, W5-4, TRex450(HDE), TRex450(SE), QJ-EP8v2, BCX2 ,Logo10, Hurricane550
SIM: Phoenix (previously also Reflex/XTR, ClearView, RF, FMS)
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Old 04-18-2009, 09:18 AM   #10
JustPlaneChris
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Quote:
Originally Posted by kgfly View Post
Thanks Chris. Wow, that sure looks like a lot of weight to be hanging off an unsupported cantilever right out the front of the heli. It looks as if the CF plate would snap off in a hard landing, taking the Rx with it and maybe ripping some servo leads, but of course looks can be deceiving.
Actually, that forward A123 pack weighs less than the 8S 3700 lipo that normally hangs there. Plus, if you check how far the pack goes, when it tries to bend the forward part of the tray (G10, btw... not CF) the aft end of the pack pivots up to stop it.

I'm sure in a hard enough crash it might break or crack it, but it's an easy to replace bit.
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