thesoulcrusher

Hi I just picked up a used traxxas emaxx 3905. It is the brushed edition and came with two 8.4V nimh batteries. Can I run 2S lipo packs in this instead of nimh?

I just do not want to ruin the electronics at all.

Thanks

t9dragon

My Feedback: (11)

If you install a Low Voltage Cutoff (LVC) you can run lipos.

thesoulcrusher

Thanks t9dragon

the only problem though i guess is that I Can only use up to 2S lipo (7.4V) so it would be less than the nimh (8.4v) ..

t9dragon

My Feedback: (11)

You can use two 2s lipos.

thesoulcrusher

Hi t9dragon

Yea that's what I figured.. But what kinda sucks on that is then i wont have 18.4V of power.. Just 14.4V..

But itd be nice having batteries that last longer

thesoulcrusher

Hey t9dragon

This is an example of an LVC you are talking about right? http://69.161.220.47/index.asp?PageA...OD&ProdID=4383

Do you recommend one best for emaxx?

dealwithit

My Feedback: (55)

just because it has a lower voltage doesn't mean it will be slower with lipo's. they hit harder and dump power alot more consistantly than nimhs. they are also lighter too, which helps out too.

thesoulcrusher

Hi dealwithit

So do you think i'd be better off getting two 2S lipo packs then?

t9dragon

My Feedback: (11)

I haven't used the one in your link. I have used the 2cell LVC from Novak http://teamnovak.com/products/lipo_c...ule/index.html
Running lipos will give you more consistant power and longer run times.

thesoulcrusher

off topic question..

will this brushless esc/motor kit fit in the emaxx without modding it, and will it be powerful enough?

http://www.hobbypartz.com/car.html

t9dragon

My Feedback: (11)

You would want something more for a 1/8 setup.

thesoulcrusher

hi t9dragon,

I wish that either one of these were in stock anywhere. . same price for 1/8th size:

http://www.hobbypartz.com/ezbrposycoc11.html

http://www.hobbypartz.com/ezbrposycoc1.html

know anywhere that has them in stock ??

t9dragon

My Feedback: (11)

Are you looking for someone that sells them here in the states? I know there is a company out of Hong Kong that sells them.

thesoulcrusher

Hi t9dragon

I would prefer the US due to shipping costs. I'd like to ultimately get it for about $100 like this set..

But if its a bit more like $20 more, i'd be willing to pay..
Still a good price

rc person 577

When a 2s lipo is fully charged, it is 8.4v. Not sure why they are said to be 7.4, each cell charges to 4.2v fully, not 3.7.

As for the brushless, don't skimp, get a nice system that won't develop problems later...

idk just a thought.</p>

thesoulcrusher

rc person 577 ,

are there issues with the EZRun systems? I heard they work excellent, but if you know of issues with them please let me know

rc person 577

I have heard they either work great, or not at all. For me, if you get one, and it doesn't work, you buy another one, and you are almost the price of a Mamba Monster.

Also, the 80amp sysetems seem small. The Mamba Monsters are 120amps, and the Tekin RX8 is 210amps.

You get what you pay for.

thesoulcrusher

Hi rc person 577

this will be my first brushless conversion.. im very new to RC, especially Electric.. have used nitro for a few yrs.. dont think i am ready for a mamba.. way too fast lol..

scott36

My Feedback: (54)

here is a good question.... what kind of run times do folks get with say 2450 packs to 5000 nmh pack with the 2 s lipos

thesoulcrusher

Hi All

just wanted to update you on my progress..

so instead of just getting the LVC and using the brushed system.. I went all out and got a novak HV PRO brushless system with 7.5T motor..

The truck hauls ass now!

here is a video (poor quality sorry) of my first run with it..

http://www.youtube.com/watch?v=EM0vKMwHZr4