Originally Posted by MikaR
BTW, I replaced the steel pillow balls with Ti ones, substantial weight reduction. Now I'm also thinking of replacing the nimh batt with a lipo. What do you recommend for one? Regulator, too
I sell micro batteries and run a RRR WC Evo 2 and I've found that the car handles better with the NiMH than with the Lipo. I put a Lipo in and switched back. I'm not so sure there is an advantage to Lipo in this car as I get a whole day of racing from one charge of my 1500 5 cell receiver packs. I currently only have 900mah Lipo packs for the gas cars, but I am having some 1900's made in the same dimensions as a 5 cell side by side NiMH receiver pack to see if it is enough weight to make the car feel better.
If you are going to use a Lipo I would suggesting something in the 1000mah or better range with a 4a regulator on it. Today's servos with 200+ oz/in of torque pull quite a bit of juice from the packs when you are at full brake or you have something binding your steering (like another car or the wall in my case hahah).
Some links and info:
Well soldered 5 cell pack with wires routed along the side
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| | | | | | 32.5mm
and 17.4mm tall with shrink, remove .1mm if you don't have shrink on your receiver pack.
My packs are not ready yet, but in the mean time I've had to test a bazillion Lipo manufacturer's products and settled on these and highly recommend them:
Common sense rc
If you want to go cheap (these cells are o.k. but they don't last as long as above before puffing).
This all assumes of course that you are mounting your regulator somewhere else. If you are mounting your regulator in the same compartment as your Lipo pack the most you are going to be able to fit in there is a 1200 or so. It will depend on how big your regulator is and i'd suggest shrink wrapping your regulator and your pack in the same "package" to avoid vibration issues.
1000's last a day or so give or take in a 1/10 like our Kyosho's, the 2200's will last about 3 full days of racing without being charged although i'm sure none of use will leave it that long after being the habit to charge after each heat
I am working on more information and sharing the research I did fro my company into the deep rabbit hole of NiMH Lipo and LiFe batteries. Keep an eye on www.skyrocketracing.com
for info in the near future. Feel free to shoot me battery questions and such via the forum, pm's or my site.