8.4v hump pack construction

[chevythunder]

Any know if there is a how-to guide somewhere on the information super hiway on properly building a 7-cell 8.4v hump pack?

When I first got into RC I bought 3 Duratrax Shark 1500mAh Ni-Cd 6-cell packs not knowing the differance in batteries. At the time I just wanted to get out and run the bugger and funds were limited. I have since upgraded to 4100mAh Ni-MH racing packs.

I have read on other forums about guys making 7-cell packs from a bunch of 6-cells but never a guide on how to do that. Just for craps and grins I want to take them and make two 7-cell packs for some quick backyard bashing and then use the remaining 4 cells to make a smaller pack so my 5 year old son can have some fun too. Even running 6 cells he manages to find something to hit going full hammer.

[chilledoutuk]

its quite simple my friend as all you have to remember is that when you conect the cells they have to all be in series.

Here is a little diagram i have drawn for you to demonstrate how to conect the cells in a side by side 7 cell hump pack.
http://img161.imageshack.us/img161/7055/7cellhumppack0nb.gif

I have to tell you i though together a car out of an old cougar i had years ago and put a supersport i wasnt using in it and let my 4 year old nephew have a go .
4 words "full speed" and "brick wall" come to mind

in 5 years of using my cougar i had never bent my cougars ally chassis it took him 10 seconds. i addmit it was way too fast and thus i will probably make a 4 cell pack as well.

i almost had an heart attack when he started shorting out my new gp3700 cells that were in saddle config by pressing the 2 uncovered packs of three together so that the bars were touching. i didnt see it i was taking the shell off and i heard a crackle i have never moved so quickly lol.

[chevythunder]

Thank you ever so very much. Your diagram worked perfect and I now have 2 7-cell packs which worked great, and a 4-cell pack for Junior. It was still a little fast for him even with the 4 cells. I ended up turning down the ESC to 75%. He still managed to run the front end into a wood pallet and bend one of my turnbuckle camber links and shattered a bearing in the axle carrier. That's minor, the last time time he hit a telephone pole and broke a skid plate, blew a shock cap off, cracked the front bulk head, stripped a servo and broke a servo saver.

I did notice that the new 1500mAh 8.4 Ni-Cd packs seem to have about the same punch as my 4100mAh 7.2 Ni-Mh racing packs. Not the same run time but the same initial punch.