16.8 volts
 

Any body running a double set of Ly-ploys through an V2 board? I'm thinking of doing that to one of my drag cars. It's currently running one set of ly-pos with an V2 and a Chilli motor. If I do it right I can make up some jumpers to change it back. Would like to know how it performed

i hope you know what your doing... mess it up and thats a 50$ bored the ep of the car and maybe the liths and motor gone.... lotts wasted monbey... it is possible ive seen it before but you really should make sure your going about doing it right...

Opps missed up I met 14.8v.

still thats alot lol

yeah...the v2 isn't terribly reliable. hell, i fried mine at 4.8v with a stock motor :lol:
btw it's li-poly not ly-poly. just a little side note.
you'll be able to run it, but once the v2 fries (the ep won't fry because the v2 is the only way that electricity gets to the ep) you'll have 50 bucks down the drain

if the v2 holds up (assuming its 30v 30amp rating holds true) then you would possibly get communator glazing, brush glazing, or burning up of the motor.
remember you need to cut those traces.

I'm sorry, but as someone who uses V2.2 boards all the time, They are very reliable. They usually fry because people don't install them very good or they are not using a proper motor and burn it up. You have to know how to use them, and they are the best MOST reliable product on the market. Follow this tutorial (also has specs.) http://www.xmodsource.com/forum/showthread.php?t=15461 The V2.2 can handle alot, The Chilli would be the best to handle 14.8v, which is exactly what Im running in my dragster (V2.2, CHilli, Liths x 4) Checkout this link and checkout the Speedchecker photo. http://www.xmodsource.com/forum/showthread.php?t=15324

Just make sure to do clean solders, no loose wiring, and also the Chilli w/ 4 Lipos and a V2.2 can only run for about 13 seconds before you need to cool the motor.

I'm sorry, but in all the years I've been doing this, it's been the least reliable product on the market. Which is why the Nellys and Spiders have done so well. It's been installed by many people over the years, of all skill levels. It burns up easier than the other EP add ons.

I had my first V2.2 fry on me, but like in most cases it was the wire touching because the contacts are so small you can hardly see them with your eye. After Atomicmods replaced it and showed me a better way to install it, I never had a problem. I now have 4 of them on the shelf and 2 have been through alot, and re-wired to new projects several times. I have never had and fryin since then and stand behind this product 110%. It is by far a more advanced regulater then the nelly or the spider (IN MY OPINION). For this reason it needs proper care and install and someone who knows how to use it. I am not knocking the spiders or nellys at all, I just think everyone keeps knocking the V2.2 because they don't know how to take care of them.

Not to mention the Nelly deluxe can only handle up to 12v (at $70.00) and the V2.2 can handle up to 30v (at $49.00). So for this install of 4 Lipo he would fry the Nelly.

The V2.2 is much more then a turbo and alot stronger then a nelly when used correctly.

The nelly is a turbo. Which I believe is just like stacking fets (thats why you have to remove the fets from your board) (don't quote me on this). The V2.2 is basically a BEC which regulates the voltage going to the motor the board and even to the servo and cleans it up as well, taking out servo jitter.

Again, Im not mad so You don't be. I am not bashing the nelly. It is a good product.

Nice thread XXX looks like I may give it a go. It looks like tires are going tobe a problem.

Thanks. Yeah the tires will shread. You need a harder compond tire and you need to use tire lock glue. I would also suggest lock nuts. And if your wallet can handle it I would get GPM rear knuckles and dog bones. You will also have to lock the rear diff to hit these speeds.

Remember I am not bashing the Nelly by no means, but you need a V2.2 board for 4 cells. It is currently the only regulated board that can handle that voltage.

If yu go with a harder compound on the tires you will loose traction. I'm having that problem now. I'm using a set of slicks from my Firebird upgrade and stick compound like they use on slot cars. It would be nice to find a larger tire that is still soft.

Here is the problem, Yes you would traditionally want a softer compound tire, BUT With this much power to the tires at this scale (In my experience) you will shread tires. I suggest (Not the hardest) a harder compund tire with some good tread for traction. The tires (when driving) will soften a little from the heat generated. If you have a drag run, first heat the tires up with a couple quick runs, or hold the car still and run the tires (Like burnin rubber) first. Also a thicker drag tire will hold up better aswell.

I would love to see 30v run for any worthy amount of time. The Nelly wasn't made to run much over 12v because no motor can handle much over 12v. Other than that, it does the same job of the FET stack performance increase, and able to channel extra voltage straight to the motor with only the 7.2v for the board to run. It does everything the V2 does, but with out notoriously burning out, and in a smaller package.

While congrats your V2 is holding, they are notoriously weak.

and they are aldo notoriously BIG. my old evo had so many traction roll problems with the v2 mounted(it was working perfectlay at the time) it wasn't funny. sure, drag races were fine, but when i started to slow dow to turn and come back...*flip*
the nelly's FET's hold up better to amperage than the v2's the v2 does have higher voltage tolerance, but really, who's gonna have 4 li-po kits stuffed in an xmod?
to a comparison.
find a:
1. stacked nelly
2. bug v1.0 (essentially the stacked spiderv4)
3. v2.2

and run them all on a 12t motor with a 7.2v li-poly
run them all on standard evo chassis(except for the li-poly)
time how long each one can hold up.

(ph2t used to run a 12t on with his stacked nelly, and by the way, ph2t is the creator of the nelly)

Uh, who would run 4 lipo's or liths. ..... This forum was started because the member was asking about how these turbos would hold up to 4 cells. And also check my thread, 4 cell is what Im doing ... http://www.xmodsource.com/forum/showthread.php?t=15324 ... I respect your opinion but please don't reccommend the wrong product. This thread was for 4 cell and turbo and the V2.2 is the only regulated board that can do that, plain and simple.

(PS- I have never had a roll over)
(PS- Fried V2.2 boards are mostly user fault) :for Texan
(PS- The Chilli can handle 4 lith-lipo just fine, this set up is for a drag car that is intend ONLY to run short distance at TOP speed) :for Texan

Also I have used 2 Nelly's and I like them very much, as I stated before. I am curious who has so much comparision experience. I am just asking not assuming you guys don't have any. I know I do.

ok, for straight drag cars, any turbo that'll handle your voltage is fine

4 cells, fine to go v2.
i've seen you project tons of times dude.

for other applications, i'd still recommend the smaller turbos

Cool, I didn't understand why that went back and forth so much. Both good products in my opinion. You like Nelly, I prefer V2.2. we can agree on that I hope. But again the thread was for 15v input options.

I just want to say, everyone has their own opinnion about this! No one is wrong, no one is right. Just a matter of perference.

Like XMD+XXX mentioned, everyone one of these is better for other applications then others. Just thought I'd throw that out there, although you guys probably already know :).

Okay, just to drag this up again. I verified it. Here is the difference. The Nelly, is just like fet stacking, that's it. The V2.2 is much more it is a regulator (BEC) if you are familiar with them. It regulates the current to the servo as well, cleaning up servo gitter and sends more Volts to the motor and a reduced voltage to the servo.

I said that before, but I wasn't sure. But that is exactly the difference.

btw it's jitter. gitter is an incorrect spelling. we know what you're saying, but it's just one of the things that make me go OCD :lol:

if the nelly was only stacked fets, then there'd be no point for it to be directly connected to the power wires.
but i'll say in general, i agree. the v2.2 does have a better voltage regulation circuit

Please talk to an electronics expert, someone experienced and over 30. The Nelly is the SAME as stacking fets, they are just better fets and packaged for you so you don't have to stack them, just connect the wires. Im not sure exactly why you connect the power wires BUT i will find out tonight, I didn't think to ask. The V2.2 is a BEC that regulates EVERYTHING, motor-board-servo. Actually they are 2 different things, The V2.2 does the same as a nelly plus more. Stacking fets will do the same as a nelly but won't do what a V2.2 does. You could actually not even upgrade anything on your Xmod (motor, batteries) and the V2.2 would clean up the servo jitter and regulate the board better. I will find out exactly why the power wires connect to the Nelly tonight and post that info. That's the down and dirty. Posted for your FYI.

"posted for your for your information"?
i think 1 "for your" should be enough.
just stacking fets doesn't allow one to run 11.1 v so the nelly is doing voltage regulation. just not at the level of the v2.2.
thought i'd throw that in there.

Keep this a little more mature, you two, before I start pressing the infraction button. The mindless bickering is getting mighty old.

Don't worry we are not bickering. No one is ****ed at each other here.



1. Sorry for the double for your... I write faster then I can think.

2. Come on XMDrifter, man, that is exactly what stacking fets does.

well, just to put this out here, some note's i've found
the pcb only can take 8.4v maximum. if one tries to run more through, the pcb will fry. with both the v2.2 or the other turbo boards, one is allowed to run that same high voltage through, but the pcb doesn't fry because the turbo board or v2.2 regulates the power to the main pcb
they ususally go from 4.8v to 7.2v going from the turbo/v2.2 to the pcb
the motor gets to take advantage of the full brunt of the input power because the board runs it off of the high input voltage while the pcb only gives signals and recieves the voltage that it needs from the turbo/v2.2.

we aren't arguing, we're just presenting facts and information, and this could be useful to others who might want to know this stuff so they can selsct the board that best suits their application

That's pretty much spot on. I know why the power supply goes to the nelly (which is basically just stacking your mosfets) Power goes into the fet then back out the fet to the board filtering the current. when you put a nelly on you are doing the same thing power to the nelly then back down to the fet output contacts. You could actually eliminate the power supply being wired to the nelly but then the nelly would have to have twice as many wires (going to the fet input and output contacts on the board. Do you understand. Also just look up some info on B.E.C. boards (which is what the V2.2 is) It is good to know and understand the difference of what a Turbo (Nelly) does and a BEC (V2.2) does. Me likey discussiooooon

hmmm.
well, the wires going to the fet pads are signal wires.
that means the nelly gives voltage to the pcb to use for is steering/control functions and the motor signal goes to the fet pads and up to the nelly, telling the nelly what to do with the power.

I don't think you understand. (Telling the Nelly what to do) The Nelly isn't DOING anything. It is just stacked fets, basically they are like little filters. All that is going on is the power goes through them. feel me.

feel you...why'd i want to do that? lol

the signals going up the signal wires coming from the main pcb dictate what the nelly does with the electricity while the nelly coninuously feeds the neccesary power to the main pcb to keep it running.

a BEC is a Battery Eliminator Circuit
meaning that it just allows your car to run on one power source instead of one for motion and another for control. commonly found in hobby grade esc's
xmods already run on 1 power source, the battery pack.
also, a BEC will cut power to the motor if it senses that the batteries are nearing low voltage so that the vehicle can still retain enough energy for the servos to give control inputs. BEC's are most used in rc aircraft rather than rc cars because it's important to be able to land with a "dead stick"
BEC's buffer the power input as well, giving you smoother power.

so i don't think the v2.2 is a BEC. i believe it's just a voltage/amperage regulator just like the other turbo boards. just it can regulate and operate at higher voltages and amperages.

Well int's not exactly a BEC, but it is very similar. For example if you were going to run 4cells in an Xmod or any RC (1/10, 1/18) you would need a BEC because the servo is only rated for 6v (The HS-55 is rated for 9v max) The BEC will take the single batterry source and give the Servo only 6v and give the full volts to the motor. A V2.2 does the same thing, a Nelly can not do this. You can use a V2.2 board as a BEC in .. lets say a mini LST and use 4cell Lith and it won't heat and fry the servo.

then explain how the nelly can allow you to run your car from 11.1v
the servo is rated 6v and the board is rated 8.4v
but your motor will run at 11.1v
how is this not
"take the single batterry source and give the Servo only 6v and give the full volts to the motor"?
why does the nelly/spider/bug not have this ability when it can do the described above?
then how is a external turbo board not the same as a v2.2 albeit not handling as much voltage and current?
a few cross examination questions :D

I don't know that it does that, im sure the servo is getting hot. The Nelly (DELUXE) is rated for 12v so no more then that can be used, my guess is that the servo is running hot. I will have to get more details for you tommorrow.

as someone who owns a spider it does nothing for voltage regulating to the board. yes it hooks to the same place the power wires do on the board but, it does nothing but send voltage to the motor. as never owning a nelly or a v 2, does the power go to the v2 or nelly and then to the xmod board? that would tell you whether it bec or not. if the power goes to the v2 then an output from the v2 actually provides the power to to the board then yes it would be bec. but if it hooks to the board in the same spot the power wires do, then there is no way it regulates voltage going to the servo. the spider does not regulate voltage.

looking at the tutorial on the v2, it is set up to regulate the voltage going to the xmod board
http://www.atomicmods.com/Categories...tallation.aspx

the spider hooks to the same spot as the power wires do on the board, this way the board would get the exact same amount of voltage that the batteries are putting out. no regulation
http://shop.ausmicro.net/download/Sp...uctions_v1.pdf

looking at the tutorial of the whoa nelly this attaches the same way as the spider, thus no regulation.
http://www.woahnelly.com/images/Woah...ationGuide.pdf

having worked in a field that i had to have electrical knowledge, maintenance lead at tonys pizza, in order to regulate the voltage going to something you have to have a regulator in between the power source and the destination you are hooking power to.

v2, yes it is in between the power source and the xmod board.
spider, whoa nelly, no its not in between the power source and the board, it attaches to the same spot the power source hooks to.

the only way you would have different voltage to the board and the motor with the nelly or spider is to run them off of a separate power source. but i don't know if the voltage to them from the separate power source would back feed to the board anyway causing the voltage to be higher to the board anyway.

Cool, thanks for taking your time to check that stuff out. At least i'm not the only one who understands this. XMdrifter, did you get that. you can check that on the Nelly and V2 install guides if your unclear.

ok i see it.
haven't reviewed the turbos for a while, so thanks

that means that the actual board must be able to handle the higher voltage...hmmm
odd,i could've sworn that the nelly gets input and outputs it to the pcb...oh well
but the nelly stacked is still to date the only board capable of handling the lightspeed x2 pro

What's the lightspeed pro? If a nelly can handle it then a V2.2 CERTIANLY can. I thought we established that.

handling continuously under load is what i meant.

try getin' one and running it on your nelly'd cars.
then switch it over to a v2.2'd car and see what happens

this is getting old fast !

top and bottom of the original question is why would you want that much power in an xmod ?
you would not be able to use it as it would spin-out every time you gave it throttle and the motor would last about 2 mins
so all in all pointless !

"This is getting old" "not be able to use this much power" PLEASE go back and read the thread and you will know why. Read first please.

i have read the thread and fully understand why that much power canot be used
my point is that even if it could be used it would be pointless in an xmod

and the thing that is getting old is the arguments about the fact !