5S for Neu 1515 3d
 

Hello I want to run my neu 1515 3d on my e-maxx on 5s, can i do it??? or it is low voltage?
Regards

PD: a 3000mha 20c 5s battery for 1/8 buggy with medusa 2000kv 60mm have enought discarge?

~25,000 rpms is abit low for my liking, I run in the 35,000rpm region and have great results (2000kv & 5s).

3000mah x 20c = 60amps, thats not enough current to push a 1/8 scale reliably, you need more like 80-100amps (5000mah 20c for example).

More/ better opinions will surely follow....

^ +1.

The minimum voltage I would use on that motor (kv=1360) is 6s, and up to 8s. 7s would be the sweet spot, but that's an odd configuration for lipo packs.

OK, I have just buy a neu 1515 2.5d 1650kv it is good choice for 5s???

Excellent. I have a 2.5D on 5S and it rocks my truggy.

+1 great motor

I have a question on Neu.
Which motors are for streetcars/buggys and how many cells can they handle??

Applications vary, but heres a loose classification:
1515's are generally for truggys and MT's
1512's are for 1/8 buggies
1509's are for 1/10th's

And as far as cell counts, it all depends on which motor you are looking for.

Well I'm looking for a car motor 1509 according to what you informed me. I'm looking for one that can handle as many calls as possible at least 12 cells/14.4v. Do they exist??

What car are you looking to power?

What you need is a large call centre with lots of operators...

Seriously though, we need to know the specifics of your intended setup in order to suggest a specific motor- you can get a motor that could handle 18 or 24 nimh (boo) cells, but without knowing what its going into and how heavy it will + how fast you are trying to go over what terrain, random suggestions arent going to help.

Mo info please.... :yes:

the 2.5 is an excellent choice for the MT on 5s, I think the 3d would have done good as well, if you could have got a big enough pinion on it

CALLS??? My bad lol.
Ok well I have the schulze U-Force speed controller in my tc-3. The car is carbon fiber so it's a pretty decent weight. (I have pics of it in my albums).
I just want a fast/powerful car motor mainly for top speeds/drag racing on a smooth surface that can match the controller (12 cells/4s) or more...

Who does drag racing around here, as they'd be the guys to talk to (didnt say I'd be any use, just said we need more info :lol: )...

Well I just bought my 1st NEU motor a 1509 version. Here's my only question. How can I use it in my electric tc3 when the shaft is 5MM? I can't find a 5MM 48p pinion gear anywhere!! lol. Well I did find 1 online store but they where all sold out...

http://204.186.93.64/Pinions-48P.htm

If those don't work out, I've got a 5mm bore 48p brass pinion on my 1506 I'll sell you. It's either 21T or 22T.

LOL Thanks. I just found the same site right before you sent it to me... Here's another site that sells them just incase you ever need it...
http://www.rcpcrawlers.com

Hi now I am runing my 1515 2.5d on 5s and it run very well, I have 2 packs of lipos 5000mha 5s (2s+3s), And now I want to buy anothers lipos, but i don't know what buy...... I can buy 2s+3s in series or 5s + 5s in parallel. What is best option?

Hmmm I don't know if it's safe to connect 2 lipo packs of different cell counts. I always make sure both my packs are identical if I'm running them in series.
It all depends on what you need. Runtime vs saving money. 2 packs ran in series might be cheaper but they will not run as long as 2 that are run Parallel. So I feel it's all up to your wallet.
One last pointer... running series is always better when you are racing someone or trying to reach top speed... 2 3s to make a 6s will be lighter than 2 6s packs....
Hope this helps!

Nothing wrong with running a 3s in series with 2s, if the cells are the same type and usage. That was my main setup (also using the 1515 2.5d) for about a year, good setup.
I'd say 2 packs in series is usually better than 2 packs in parallel.
Unless you want parallel packs for huge runtime the there won't necessarily be much difference in weight and performance. A 3s + 2s 5000mah and 2 x 5s 2500 mah of the same C rating and quality should be similar.
The main reasons I think the series setup is better is because it's easier to charge and balance the 2s and 3s as one pack. To balance and charge the parallel packs as 1 you would need a 10s charging setup, or make a harness to link the balance taps together in parallel, and I would avoid doing that.
If 1 packs comes unplugged for what ever reason in the series setup the car will just stop. Annoying, but at least everything will be ok once you plug it back in. If one pack comes unplugged in the parallel setup, the car will run of the pack still plugged in. Since you will probably choose lower capacity (and therefore lower amp output), 1 pack will not be able to handle all the load by itself and could be damaged if you kept driving (might not notice drop in performance in low traction areas).
Only reasons I would choose 2 5s packs in parallel would be if they had a good special on them, or you needed a certain size pack to fit in your car (most 2500mah packs will be shorter than 5000mah packs), or if you had something else that you used the packs in.

Ok I never would have mismatched my cells but I guess it is ok.
Well when charging 2 3s packs as one what do you need? 2 balancers I would guess to monitor each pack. Then do you use a parallel adaptor or a series adaptor to charge the 2 packs? I would think a parallel but I'm just asking to make sure...

Connected is series with 1 balancer. You just need a balance harness that will let you do that (easy to make). See the lipo wiring page in BrianG's calculator http://www.scriptasylum.com/rc_speed/_lipo.html

Connecting a 2s pack in series with a 3s pack of the same type is electrically no different to a single 5s pack, except instead of the tabs being soldered to one another you have an extra piece of wire to join the middle cells together. Same goes for balancing

See this is why I get so confused with this. The link you gave me sais charge in series, here's a video of a guy saying charge parallel... WHich one is it?? lol.

http://www.youtube.com/watch?v=Iv6dD67SUew

For packs of different cell counts (2s + 3s) you have to charge in series, you can't connect packs of different voltage together in parallel. The guys says that about 15 seconds into the video as well.

I don't think the average charger and balancer setup can do everything that the Xtrema setup in the video will do, so it's easier to charge in series usually. You could charge the packs in parallel, but as far as I know you wouldn't be able to balance every pack at the same time like they did.

Ok I see. I have a blinky balancer and 2 3s 4200 Neu lipo packs on the way... I'm going to get on the search for the parts to make a y harness for the balancer now.
Thanks.

I hope by Y harness you mean turning it into a 6s lipo as far as the balancer is concerned...

I mean balancer Y adaptors to balance and/or charge two batteries at the same time using one balancer... Patrick led me to the diagram, now I have to find the parts to put it together.

A series Y harness to connect the packs in series to the charger, and some male/female balance plugs to make the harness for connecting the balance taps to the charger is what you require- just follow the diagram and you wont go wrong, which is more that can be said for some traxxas forum numpties who did it wrong and ended up shorting out their packs...