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08-06-2008, 11:36 PM
| #1 |
| Rock Crawler Join Date: Aug 2007 Location: mesa az
Posts: 657
|  battery suggestion
well i have a question for everyone how long of a run time do you think i could expect out of a 9.6 volt 1400 mah 2/3a cell pack running 45t motors, 645mg servo, micro switch dig, cc bec and cc mamba max and or would it be in my best interest to cough up the dough for lipo. thanks for the help with my addiction
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08-06-2008, 11:49 PM
| #2 | |
| Debunking old stereotypes  Join Date: Feb 2006 Location: 1st and Amistad
Posts: 2,260
| Quote:
Go lipo you won't regret it. | |
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08-07-2008, 12:36 AM
| #3 |
| I wanna be Dave  Join Date: Oct 2005 Location: Under the 4444
Posts: 2,345
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X2 on the lipo. My 2000mah 3s will let me crawl my berg for 2 hours straight  |
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08-07-2008, 12:44 AM
| #4 |
| Pebble Pounder Join Date: Jul 2008 Location: Australia
Posts: 151
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Fair enough on the lipo suggestion but the trouble is where do you put them that's low enough to take advantage of the clod design? lipo's are mostly flat, long and designed for the fuse of an airplane. we need lipos in a hump that can be put on the axles of 2.2 or inside the wheel of supers. I'll be running 6-8 cells of 1500 2/3A NiMH on my berg. |
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08-07-2008, 01:07 AM
| #5 |
| I wanna be Dave Join Date: May 2006 Location: FOUR 8 OH
Posts: 4,913
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Umm... you can get Lipos that are tiny now-days, they all aren't long. Check out MaxAmps, they have their lipo's on a number of comp rigs... BENDER for one.
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08-07-2008, 04:54 AM
| #6 |
| Quarry Creeper Join Date: Apr 2008 Location: Eau Claire
Posts: 201
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Plus Lipo's dont have the weight of Ni packs either. I put mine on top of my switch box. Then its protected by the chassis.
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08-07-2008, 04:59 AM
| #7 |
| varcor.org   Join Date: Aug 2005 Location: 757
Posts: 1,073
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which chassis are you running? on my slingshot, i got my electronics mounted similar to the kamikaze's zero chassis. this leaves enough room for a small 3c lipo to fit between the electronics and skid plate for protection.
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08-07-2008, 06:50 AM
| #8 |
| I wanna be Dave Join Date: Nov 2006 Location: spring hill TN
Posts: 2,959
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Lipo's are small and light. You can run them about anywhere and make up for the weight that you add up high by adding weight to the wheels very easy without hurting anything.
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08-07-2008, 08:40 AM
| #9 |
| I wanna be Dave Join Date: Feb 2004 Location: on a Big Rock
Posts: 7,837
| Gatekeeper, Kamikazi, Sven and I all use this pack in our 2.2 Bergs. Nice and light with plenty of power! http://www.maxamps.com/Lipo-1100-111-Pack.htm  1100mah Capacity 11.1 Volts 34mm X 66mm X 19mm Maximum Continuous Discharge 16.5 amps 81 grams |
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08-07-2008, 12:09 PM
| #10 |
| Quarry Creeper Join Date: Feb 2008 Location: Lagrange
Posts: 261
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How much run time do you get Fishmaxx?
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08-07-2008, 01:49 PM
| #11 |
| Rock Crawler  Join Date: Jan 2007 Location: Midway
Posts: 836
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I would think that run time does not have to correlate to another's due to load. Since running on different surfaces could vary battery life. Hell hook some up to your rig and drive til it shuts off, that's another thing to think of, are you running a battery shut off. How many other servos are you going to use. What speed controller? All have different circuits that do the same thing but could vary in resistance. Binding you rig up so the wheels are locked up uses more energy. Drivers vary so runtimes have to vary. Pic a good battery and have fun, money is not an object when the fun value is great enough. Ask any one in Vegas  Or RCC Last edited by JIA's Dad; 08-07-2008 at 01:51 PM. |
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08-07-2008, 06:10 PM
| #12 |
| Newbie Join Date: Jul 2008 Location: Broomfield
Posts: 3
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I run A123 3s 2300mA batteries. The triangle shape ties neatly onto the rear axle. Run time is well over 1.5 hours. I usually just put them on the charger after that and they are ready to go in 12-15 minutes. One thing to remember is that motor turns, notwithstanding driving style, will consume the bulk of your batteries capacity. So, if the motors are of equal quality, a higher turn motor will do the same work and consume less current. I doubt you'll find run times are an issue with crawlers. This, of course, is true if you buy a good, reputable brand battery. Garbage batteries will give you garbage performance. Many brands mentioned here are excellent! |
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08-07-2008, 07:24 PM
| #13 |
| Quarry Creeper Join Date: Feb 2008 Location: Lagrange
Posts: 261
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Thanks I always buy quality batteries I'm just trying to get up all the stuff i need for a berg build. I was just curious about run times so i can decide which battery to get.Thanks guys
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08-07-2008, 07:43 PM
| #14 |
| I wanna be Dave  Join Date: Dec 2005 Location: Happiness is a warm AK.
Posts: 12,563
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I'm running a 3S 20C~30C 2100 mAH Zippy pack from Hobby City. Size is perfect and between it's C rating and the capacity of the cells, it will survive any spikes in amp draw that some of the lower capacity packs can't absorb regularly w/o effecting the life span of the pack. Weight: 187g Size: 100 x 34 x 24mm |
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08-07-2008, 11:42 PM
| #15 | ||
| I wanna be Dave Join Date: Feb 2004 Location: on a Big Rock
Posts: 7,837
| Quote:
Courses are usually about 5 minutes. Quote:
Unfortunatly everything comes at a price, and if you want something you got to give up something  | ||
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08-08-2008, 04:14 PM
| #16 | |
| I wanna be Dave Join Date: Dec 2005 Location: Happiness is a warm AK.
Posts: 12,563
| Quote:
I'll take the extra 3.5 ounces and save a little $$$$.  | |
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