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Cheap simple conversion to 7.5 volts. Get more powerful steering.

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dirtyape

RC Newbie
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This is what I did to go from 6.0 volts to the receiver to 7.5, and it was a great improvement in servo strength. I added a 5th AA battery in series.

Go to radio shack and buy the single AA battery box. Part # 270-0401.Its $99 cents. It will have 2 leads out, black and red. Take the red wire on your current battery box, and cut it in half. Wire the red lead of the single AA holder to the receiver power plug red wire. Do a good job, twist them together and solder them, then put shrink tube over the exposed wire. Next take the black lead from the single AA box, and hook it too the red wire coming out of the 4-cell battery pack. You will now have a second box hanging off that will need to be positioned in the place inside the receiver housing for a 3rd servo gear. Use a volt meter, and make sure your getting 7.5 volts output, that way you know its working. I put 5 Ni-MH batteries. The power to the servos was much better and the steering is much more powerful. It is well worth it, and I have been told that it will not damage the receiver. It hasnt messed mine up yet.
 
I use a 5 cell rechargable too, 2 years no damage yet.. only difference id that mine are shrinkwrapped ina pack instead of being loose or 1x1
 
put a 6th battery in and you'll get 7.2v.

actually 4 batteries is 4.8 v. with 5 batteries you are now running 6v. whcih is good and is nice output. AA's are 1.2v a piece. 6 batts would only be 7.2v, 7 batts 8.4v, 8 batts is 9.6v, and so on.

i made a 5 cell hump pack 1.2v a piece= 6v. i can add a 6th if need be, but i dont think it may be necessary. my jr rs300 manual says the receiver can handle 4.8-8.4 volts. 7 cells at 1.2v=8.4v

it may be reading 7.5 at the peak charge of the batteries. they usually read more when fully charged.

my jrxs3 radio has battery life meter in volts on the display, and when it's fully chraged it reads about 11.2v, but it's only a 9.6v radio that holds 8 AA's. when it reads below 9.6v she beeps and dies.
 
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