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View Full Version : can i use Nihm instead of lipo



speedfreak
03-18-2010, 11:17 PM
i can get 2 4200 mah nihm batteries for $60. i don't know if i am able to use those or am i limited to only lipo batteries.. thanks

Diesel6401
03-19-2010, 12:00 AM
i can get 2 4200 mah nihm batteries for $60. i don't know if i am able to use those or am i limited to only lipo batteries.. thanks

I tried while waiting for my lipos to come in and here's the good news and bad news.
Good news: You can, I used both 7.2 & 8.4 nimh in mine (once again got impatient waiting for lipo's)
Bad news: Boat would not get on plane by itself (needed to be hand launched) & performance was not good at all.

Stick to lipos on this boat, and for $60 this is a much better purchase. http://www.hobbycity.com/hobbycity/store/uh_viewItem.asp?idProduct=9509 Hopefully this helps.

Grimracer
03-19-2010, 09:37 AM
Some info,

The UL-1 was designed around Round cells. We then made the switch to lipo after the hull molds were mostly done. Truth is the boat is very "at home" with round cells in it. BUT.. the new 60amp esc needs to have at least 12 happy volts passing through it or the stutter bump will be activated.

IF” you want to run round cells do so with two 7 cell packs and keep the prop in the 60mm pitch range (no more).

I don’t still launch with a lifting prop!

Grim

Diesel6401
03-22-2010, 07:43 PM
Some info,

The UL-1 was designed around Round cells. We then made the switch to lipo after the hull molds were mostly done. Truth is the boat is very "at home" with round cells in it. BUT.. the new 60amp esc needs to have at least 12 happy volts passing through it or the stutter bump will be activated.

IF” you want to run round cells do so with two 7 cell packs and keep the prop in the 60mm pitch range (no more).

I don’t still launch with a lifting prop!

Grim

Yea I think I was using a x440/3 with the NiMH which maybe why I prob needed the hand launch

Brushless55
03-22-2010, 08:07 PM
I didn't have good luck with Nimh batteries in my UL-1
now I use 30C 5000mah packs and it rocks!

Diesel6401
03-22-2010, 08:27 PM
I didn't have good luck with Nimh batteries in my UL-1
now I use 30C 5000mah packs and it rocks!

:iagree:

Brushless55
03-22-2010, 08:42 PM
I had to hand launch and my top speed was 19mph! :w00t:
but this was on 3000mah 7cells

Diesel6401
03-23-2010, 12:26 AM
I had to hand launch and my top speed was 19mph! :w00t:
but this was on 3000mah 7cells

19, I could have raced you with my RIO on a titan 12t, xl-5 esc and a 7 cell I think I hit 18mph. Could have been interesting buddy lol...:beerchug:

What's your ul at now 52-53mph, funny how batteries work lol. :tongue_smilie:

Brushless55
03-23-2010, 12:28 AM
19, I could have raced you with my RIO on a titan 12t, xl-5 esc and a 7 cell I think I hit 18mph. Could have been interesting buddy lol...:beerchug:

What's your ul at now 52-53mph, funny how batteries work lol. :tongue_smilie:

:rofl:
that would have been a fun race!
yes, it's unreal what high amp batteries can do for a motor :thumbup1: