7.2 V X-MOD, Quick and fairly easy!

Chris · #1 10-27-2003, 10:34 PM

I just recently got my White Supra Xmod from RS and It's loads of fun and pretty fast stock, but I soon started to feel the urge for more speed. I haven't had a chance to go to my local RS yet, so today, since I had a blackout, I decided to hook up two extra AAAs to my Xmod and see how it would come out. I attatched one cell to each of the top cells on either side of the car and held the extra batteries on the car with a rubber band around the car to hold the batteries on and got to driving the car. With the extra 2.4 V the car really flew, even though the car is bone stock and I'm not the type of person that would over exagerate (if thats how you spell it) speed since I'm used to the speed my gas powered off road RC truck (around 55-60MPH). However the body does not fit completely on the chassis with the extra cells so probably tomorrow im going to go to RS and buy some AAAAs to try out and see if they allow the body to be mounted (didn't even know AAAAs existed until recently

) If anyone is realy interested, I can go into detail on how to do this mod. It's really simple and pretty easy and is definitely worth trying.

RCDuggiedug · #2 10-27-2003, 11:05 PM

I didn't know you could get aaaa's from RS.

I was wondering if they could take 7.2 volts. I haven't got my Xmod yet but I was wondering if they could take 7.2 because I was thinking about using 2 Li-Poly cells. That would give 7.2 volts.

You have to have a special charger to charge Li cells but I have the charger already. I don't have the cells yet though.

Chris · #3 10-27-2003, 11:27 PM

That sounds good. How much do Li-Poly cells cost and how big are they? Do they last a long time? I have personally never heard of them

Nathan · #4 10-27-2003, 11:41 PM

Li polys are rather expensive, but that is not an issue. About $15-30 depending on size. Be careful! They burst into flames when shorted!

RCDuggiedug · #5 10-28-2003, 02:51 AM

Li-Poly cells last much much longer but they ARE DANGEROUS if you don't know how to use them. They are not as dangerous as Li-Ion but you have to be careful. They have to be charged in a special way or they can explode and can start a fire.

http://www.batteriesamerica.com/newpage8.htm
http://www.b-p-p.com./products.htm

http://www.towerhobbies.com/products.../gpmm3150.html

Chris · #6 10-28-2003, 07:21 AM

Those look pretty cool, and also pretty effective. Although I think I'm just gonna stick with Alkakline or NiMH. With the 7.2 V mod I did it is already faster than I need it to be and it only has the stock motor in it. were you thinking of adding the two 4 V cells or the smaller voltage cells? if you are going to add the two 4 V, then I suggest you try the 7.2 V mod first since mine is already faster than you could ever need in a race (unless your going for pure top speed

).

RCDuggiedug · #7 10-28-2003, 11:34 AM

Quote:

Originally posted by Chris
I suggest you try the 7.2 V mod first since mine is already faster than you could ever need in a race (unless your going for pure top speed ).

What I was thinking was run time. Not top speed. I've seen little about run time. Seems to be 10 to 20 nimutes. With Li-Poly cells, run time could be increased to over a hour without having to recharge. Another thing is the car wouldn't be as heavy.

I might just be thinking AIRPLANE WAY when I don't need too. Just Wondering.

catman25 · #8 10-28-2003, 02:55 PM

aNy one else try this
? I'm waiting for one more person then I"ll follow the trend

Nugget210 · #9 10-28-2003, 03:52 PM

hmmm...they do make a 7.2 rechargable R/C battery, it it make you car go faster and run longer, hey, id spend the 34 bucks

heres the link
http://www.radioshack.com/product.as...%5Fid=23%2D431
(if it works)

Nugget210 · #10 10-28-2003, 03:55 PM

or..for the cheaper way
http://www.radioshack.com/product.as...5Fid=270%2D412

neurokinetik · #11 10-28-2003, 04:11 PM

Quote:

Originally posted by Nugget210
hmmm...they do make a 7.2 rechargable R/C battery, it it make you car go faster and run longer, hey, id spend the 34 bucks

heres the link
http://www.radioshack.com/product.as...%5Fid=23%2D431
(if it works)

That battery pack is larger than the entire XMods car...

Paintballa · #12 10-28-2003, 06:04 PM

so how did you attatch the 2 extra cells to the existing ones? did you kinda do it like you would for a dual cell with a zz (i would guess some way like the zz site tells you to so that you dont solder the batteries together and you can take them off to recharge them)

Chris · #13 10-28-2003, 07:59 PM

Yeah, its pretty much like a dual cell mod on a bit-char. I included a diagram (it isn't very neat

) that should help. Just follow the diagram and use a rubber band to hold the wires to the new cell. Use a rubber band or two around the car to hold the batteries onto the chassis. If there is any trouble understanding my diagram or anything, let me know.

wasuri · #14 10-28-2003, 09:02 PM

lol nice picture....but for more speed why dont you just buy awd and stage 2?

Chris · #15 10-29-2003, 09:31 AM

Well, I heard AWD lowers top speed and rn time so I don't think I'm going to do that, as for the stage 2, I'm planning on getting it soon but I haven't had a chance to get to RS yet and since I had a blackout on monday I decided to try the extra cell mod.