Receiver Battery Pack Question

[Monkey Wrench]

Howdy All!

Hope everyone had a chance to enjoy the holiday weekend and get some running in! Spent some time tinkering with my USA-1 Nitro Crusher and am just about ready to put it all back together. Thanks to everyone for the advice on the diff's and steering servo, I really appreciate it! Hopefully I'll be able to repay the favor in the future.

Another question for you experts. I am not that "educated" on battery packs, but I have two receiver packs that I'm considering using in place of the standard "AA" pack in my Crusher. Both are 4.8V, 700 mhA (if that is the correct abbreviation). The packs are from some planes I have (one for sale, by the way, never been flown, includes servos, O.S. 46 engine and all radio gear) that I just don't fly anymore. Will either of these work as a receiver battery pack for my truck or am I risking not having enough juice to run the servos? If not, what is the suggested capacity pack for a MT?

Again, thanks for all the advice on my little project here, I appreciate it! I'll post some pictures once I get it back together. Wish I could contribute more on the advice side, but I'm in a real learning mode right now.

See Ya!

 

[FastEddy]

I'm no expert but ill give you some thoughts.
A 4 cell pack will "Just do the job" Servos can operate at 4.8v but will not produce as much torque or speed as a 5 cell pack @ 6v. The additional cell will make all the difference in the world. IMO your cheating yourself by not getting the full performance from your equipment.

700 mha is to small IMO. You runtime will be next to nothing in comparison to an 1100 mha pack that it the standard these days. The last thing you will want is to have the pack go low on you and cause a runaway.

I hope this helps.

-Ed

 

[beason]

seems most hump packs are 6v and more like 1100mah or higher.. the packs you got would work but wouldnt give you much over the aa packs becides being able to recharge them.. the reg hump packs that are 6v give you servos more juice, and the 1100 or higher mah rating gives you a longer run time..

 

[Revo Rancher]

Get the 5 cells. as Eddy and Beason pointed out, the servos are much better at 6v. I run OFNA 1400's in mine, whether a flat five or a hump pack.

 

[Monkey Wrench]

That's what I needed to know! Thanks for the advice fellas! Happy bashing!

 

[Pinblaster]

keep in mind the 4 cell AA holder has a higher out-put voltage. 4x1.5v=6v. The 4.8v packs will not last long at all. Get a 5 cell NiMH 1100 or 1200mha pack and you will have better sevice out of it. If you want to run at 4.8v, you would be better off getting a pack of Energizer NiMH 2500mah AA's from WalMart. They will give you longer run time than the 700mah packs will.