| |
| |||||||
 |
| | LinkBack | Thread Tools | Display Modes |
02-11-2006, 08:03 PM
| #1 |
| Rock Stacker Join Date: Feb 2005 Location: Akron, OH
Posts: 55
|  Battery Position & Weight Distribution I've noticed that many of the Maxx crawlers have their battery mounted towards the front of the truck. Has this proven to be the best way to mount batteries? Are there advantages/disadvantages to different battery placement? Things like weight distribution, CG on inclines, etc. It seems like many batteries are either mounted parallel to the drive shafts, above the front links (regular 'stick pack') or mounted on the A-arms (either in the form of a 'hump' type pack or split into (2) 3-cell packs and mounted symetrically). Like so ..........    |
|  |
| Sponsored Links | |
| | |
|
02-12-2006, 04:00 AM
| #2 |
| Newbie Join Date: Oct 2005 Location: Cypress
Posts: 30
| need help also yes i was wondering the same thing. what would be the best type of battery, ie. stick, 2(3) cell hump etc. for a mantis chassis, if the front tires already have BB's for weight in them. please help the wondering minds answer this question. Last edited by reydetejas; 02-12-2006 at 04:15 AM. |
|
| |
|
02-12-2006, 11:58 AM
| #3 |
| 31st place in 2006 Nats!!   Join Date: Feb 2004 Location: Columbia Gorge
Posts: 5,475
| There are many different ways for placing the battery on your rig. Depending on chassis layout and how much room you have. It also depends on what size cells you plan to use, Sub-C's, AA's, 2/3 A's..etc.... Many of the old school RCRG/ORCRC Maxx rigs ran their batteries in the A-arms.   I haven't chopped up my A-arms yet... I run stick on lead weights on the lower A-arms, just enough room between the Revo axles. I run 4 cells on top of the upper links while the other 2 cells are mounted on top of the A-arms on the right side to help counter any wheel lifting that might occur. |
|
| |
|
02-12-2006, 07:48 PM
| #4 |
| Rock Crawler Join Date: Sep 2005 Location: wyckoff, NJ
Posts: 636
| i run a 6 cell on each front a-arm. i think it does well because of all the weight on the front tires but if my crawler gets to vertical i gotta hope for the best. |
|
| |
|
02-13-2006, 10:08 AM
| #5 |
| Quarry Creeper  Join Date: Dec 2005 Location: Mechanicsville, VA
Posts: 463
| I don't run any "weights" on the front axle, with my 1/4 servo, 7.2 batt, and 5 cell 6V I've got more than enough weight on the front axle. And yes, it's makes a huge difference when trying to crawl up steep obsticles. |
|
| |
|
02-13-2006, 12:54 PM
| #6 |
| Newbie Join Date: Oct 2005 Location: Cypress
Posts: 30
| thanks ok so it doesnt matter how much weight is in the front. so if i have BB's in the front two tires and i run 2 hump packs useing c cell batt. i would be good? also what is the best way to wire the batteries? thanks for the replies. nick |
|
| |
|
02-13-2006, 02:00 PM
| #7 |
| Its My Wifes Money!!!  Join Date: Aug 2005 Location: Moody AL
Posts: 570
| In a way it matters how much weight you have because if aint got enough then you would be flipping backwards still and you would not want that. The batterys would be fine I think running like that. I aint sure about the wireing myself. |
|
| |
|
02-14-2006, 07:56 AM
| #8 |
| Colt Python/SR9c   Join Date: Feb 2004 Location: out in the shop, reloading ammo!
Posts: 8,677
| It depends on your servos also. Adding the batteries up front plus having BB's, will put a strain on your servos. The crappy 645's barely handle the bigger tires by themselves, let alone all the extra weight. The maxx steering setup adds strain, as it is not your usual steering setup to start with, so more weight = more strain. Most of the time, you need to be rolling for the weaker servos to turn the tires.Even worse if you have savers on there |
|
| |
|
02-14-2006, 08:55 AM
| #9 |
| Newbie Join Date: Oct 2005 Location: Cypress
Posts: 30
| thanks that confused me a little. lol ok these are the specs for my servos. Specifications: Digital Servo Dimensions: 1.57" x 0.79" x 1.44" (40 x 20 x 36.5mm) Weight: 1.78oz (48g) Operating Speed (4.8V no load) : 0.12sec / 60 degrees Operating Speed (6.0V no load) : 0.1sec / 60 degrees Temperature Range: -30 to +60 Degree C and im running Krocks wth maxx wheels. thanks fr the help |
|
| |
|
02-14-2006, 09:15 AM
| #10 |
| Colt Python/SR9c Join Date: Feb 2004 Location: out in the shop, reloading ammo!
Posts: 8,677
| umm, whats the toque oz. rating?? |
|
| |
|
02-15-2006, 05:38 AM
| #11 |
| Newbie Join Date: Oct 2005 Location: Cypress
Posts: 30
| good question. i really dont know i got this servo off of ebay and thats all the ad said. and the servos on have anypaper work on them. they came from hong kong. do you think i got ripped off? |
|
| |
|
02-15-2006, 05:43 AM
| #12 |
| Newbie Join Date: Oct 2005 Location: Cypress
Posts: 30
| hello the dudes screen name on ebay is dinball. i think they have website called www.rcmart.com . thanks for you help. |
|
| |
|
02-15-2006, 05:42 PM
| #13 |
| Quarry Creeper Join Date: Dec 2005 Location: Mechanicsville, VA
Posts: 463
| Well the torque is what really matters, not all those other specs. If you can't find any labels or numbers on the servo then I don't know if there's any way for you to find out what kind it is. |
|
| |
|
02-15-2006, 10:09 PM
| #14 | |
| 31st place in 2006 Nats!! Join Date: Feb 2004 Location: Columbia Gorge
Posts: 5,475
| Quote:
What brand? How much did you pay? Price can normaly tell you if it's a quality servo or not. | |
|
| |
|
02-16-2006, 06:02 AM
| #15 |
| Newbie Join Date: Oct 2005 Location: Cypress
Posts: 30
| Well thats true if you buy them from a hobby shop but i got them off of ebay. they were $19.99 each. and the ad also had the name Ko Propo, i know those are old and dont know if they are even made anymore but im going to research them. thanks for the help again. nick |
|
| |
|
| Thread Tools | |
| Display Modes | |
| |
Linear Mode
