Battery upgrades...???...

Keono · #1 12-17-2006, 10:40 PM

1/3AAA 150MmAH 4.8V.... sound famaliar? it should, it's the Micro-T's battery pack, stock. Here's the thing though... 1/3AAA batteries can go up to 180mAH... the problem is, I have NO IDEA where to get a 180mAH 1/3AAA battery. www.cheapbatterypacks.com doesn't have 'em. nor does anywhere else I look. are they rare? I don't know.

OK, let me run this by you guys. 1/2AAA is a 250mAH (average) if you look at the sides of the Micro T, you could essentially cut a hole in either side of the battery compartment, making room for the 4 cell 1/2AAA 250mAH battery. you could then, easily cover it up with some black electrical tape, or what-have you, to make it "look good".

If you don't care about looks all too much, maybe you could (you being ME) take 2/3AAA 350mAH 4 cell battery and have the battery sticking out the sides a bit. I checked the dimensions, it won't interfere with the tires... but it will be CLOSE... like... 2 or 3 mm space between the battery's and tires. that's with the wire.

so, tell me what you guys think of that idea... maybe we can get these little buggers to run longer than 10 mins.

RCdabbler · #2 12-18-2006, 06:35 PM

More than the dimensions look at the weight that you will be adding also.
I'm not saying it wont work I'm just saying facture the weight in also.

In a vehicle this small weight has a bit more impact on overall vehicle handling.

I'm still waiting to read the reports of 2 celled LI-PO's being used and if the stock electronics can handle them.I suppose someone could make a failsafe for it.Either a simple fuse or a voltage limiting circuit but what is the safe threshold of the stock receiver & ESC & servo units?

Or you could just use a 1 celled high MAH LI-PO battery and have massive runtime but with a reduced voltage/speed.But it would most likely be lighter than stock batteries.

http://www.bphobbies.com/view.asp?id=A0320104

http://www.bphobbies.com/view.asp?id=A2416227

Keono · #3 12-19-2006, 12:01 AM

I've already added ALOT of weights to my micro-t because it weighs too little to get traction on hardwood floors. I have a second body that I totally weighed down. I've added about 1.5 ounces of metal. it's kind of hard to see in the picture, but it's weighed evenly on both sides. you can increase traction one of four ways... change the material of the tires, change the floor, change gravity (lol) or change weight of the car. the weight on the body makes the car get a crapton better traction, and I wanted to add even more weight with the new battery, but it's pointless now that I realize all I'd be doing in increasing the mAH, when I really want to increase the voltage. I had a minor brain fart! anyway, That link you showed me with the 1/4AAA battery size may prove VERY usefull. if I put two of the 6V 80mAH stips in paralell I can get the 6V and a 160mAH I could change the weights back to normal on the body. I'm not sure where I'd stick the two strips of batteries though... I just gotta figure out a way to make the shocks STRONGER... maybe a cut up Bic pen........

hehe, any ideas?

OH! one more thing! I wish I could remember what forum I was on, I did a search on www.altavista.com for "Micro-T Li-Po" and found a forum that people claim to have used a 7.4v li-po battery that's used in helicopters, something like, aero, or something... but it works allegedly, and I didn't see anything about it burning out the reciever/esc.

I wouldn't try it yet though, since a new receiver/esc costs 29 bucks!

RCdabbler · #4 12-19-2006, 04:46 AM

I thought you might like the links.
I looked around on TinyRC for batts but the site is set up way to weird to easily find all the batts they have so I just posted those links.

I've been running mine on the carpet only and it has good enough traction although I'd like foam tires for the carpet which I'm sure will be coming soon.

As more and more info comes out on these trucks we'll know what it can handle.I'd love to have LI-PO's in it running 7.4V and with a longer run time.

potentiality · #5 12-19-2006, 08:52 AM

Quote:

you can increase traction one of four ways... change the material of the tires, change the floor, change gravity (lol) or change weight of the car.

Number 1.

Change the setup of your car. It is still adjustable you know. Adding weight isn't the best way by any means to gain traction.

Keono · #6 12-19-2006, 02:10 PM

adding weight is the ONLY way to gain traction without changing the tire composition (there is no different tire materials available) and there's no way I'm sanding my hardwood floors to get traction for an 80 dollar rc car, lol. and as for changing gravity... well... that's a little beyond my capabilities, ROFL! I read someone's post about putting WD40 on the tires overnight, but that destroys the rubber of the tires, and once a little dust gets to the tires, and it's no longer sticky, I'm back to square one (U_U)... and as for the Micro-T being adjustable... it's really not... the stock pieces are pretty specific as to where stuff goes... sad... sad but true...