Recommend a LiPo size for my heli...

[6cuda6]

Looking to get a battery pac for my Evo90...since the trend is Li-Po what would be the required setup needed???

Dean

[cgroves]

What motor do you plan on running?

[6cuda6]

Corey,

I have a YS91 in it with JR8311 servo's...no governor [at this point]. If we can make it small enough [like in the 1700mah region] it will work in my 3DMP-V50 as well.....

Thanks,
Dean

[Tom Hastie]

$5 says that Corey assumed you were building an electric Evo 90... not a slimer. ;)

[Sev Fontaine]

Although i've never done it before, the setup requires a voltage regulator similar to the one found here: http://www.rctoys.com/rc-products-catalog/RC-PARTS-VOLTAGE-REGULATORS.html
This will work with any 2 to 7 cell lipo. I'd recommend 2 cell in your case.
I would say since lipos are usually lighter than their nicd counterparts for the same capacity... if your goal is to save weight you should use the same capacity as what you'd use for nicds... but if you want longer times before recharging. Find out what the weight of the nicds would be and match it with a lipo. This should give you much more run time before charges.
Hope this helps!

Sev

[cgroves]

I would say the best one is the Fromeco Arizona regulator and one of their LiIon 2600 Relions. I was looking at that combination for my next .90 ship when I get around to setting it up. The LiIons actually make a better match to the lower currents involved in running rxs and servos (hopefully not a 25-30C application :eek:). The Arizona is a really nice regulator with the failsafe switch and dual voltage output. Very suited to heli applications.
Regulator (http://www.fromeco.org/shop/shopdisplayproducts.asp?id=14&cat=The+Regulator+and+Arizona+Regulator)
Battery (http://www.fromeco.org/shop/shopdisplayproducts.asp?id=11&cat=2600+mAh+Lithium+Ion+battery)