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New Car - Slash 4x4

Started by Divyam, April 09, 2011, 06:47:05 PM

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iamahuman

I am still on training mode but I can handle a 50% boost in power.

Lets see 8-)


Let me get my mods(especially lipo,tires,sway bars) and from then on,our real races will begin  >:D
"Chuck Norris once overcharged a lipo. Thank him for the Sun."

SSC LCG Slash 4x4.
JQ THE eCar.

Divyam

I started on Sport mode.. Because I need to learn throttle control.. Its too Awesome! ;D
Thunder Tiger Phoenix BX
Associated RC18T2/B2 Kit
Walkera 5G4Q3
TechOne Angel
Hiller 450 v2
Futaba 7c 2.4Ghz
Slash 4x4 (sold)

iamahuman

I have to be careful as well.No idea how much wide open throttle would be like on lipo.


I usually gun it in training with no probs.
"Chuck Norris once overcharged a lipo. Thank him for the Sun."

SSC LCG Slash 4x4.
JQ THE eCar.

traxxrc1

#28
Quote from: iamahuman on April 10, 2011, 07:25:45 AM
Let me get my mods(especially lipo,tires,sway bars) and from then on,our real races will begin  >:D

Why dont you first quit training mode rather than getting lipos...makes more sense
I'll be back.

traxxrc1

Quote from: Divyam on April 10, 2011, 07:44:42 AM
I started on Sport mode.. Because I need to learn throttle control.. Its too Awesome! ;D

I thought it would be very easy for you since you already had 2-3 cars before an this is not your first one :)
I'll be back.

rajathv8

His ealier car was bruhed ans 2wd so this will bw a lot faster. How much current will the slash draw on full throttle in sports mode? No videos yet? :)

iamahuman

I have run it in sport mode but that was just once.And the REAL sport mode will be sporty on lipos.


Its rated for 200A continuous and 320A burst.

http://traxxas.com/products/parts/escs/vxl3s
"Chuck Norris once overcharged a lipo. Thank him for the Sun."

SSC LCG Slash 4x4.
JQ THE eCar.

Divyam

As Rajathv said, my previous car was 2WD.. I could gun it no problem..
So, I decided not to go trainig mode.. Maybe when I get LiPos, I'll start off in training mode..

Quote from: rajathv8 on April 10, 2011, 08:53:25 AM
His ealier car was bruhed ans 2wd so this will bw a lot faster. How much current will the slash draw on full throttle in sports mode? No videos yet? :)

The manual says that the ESC draws 200A continous, and 320A peak..
I really didn't understand this part..

Maybe the motor draws less power?  8-)

Gandhar, take your Slash off training mode.. Even without LiPos, its a TOTAL beast!  ;D

Sorry, I can't get videos, unless I have a cameraman!  :giggle:
My bro's too busy these days.. After sometime, I'll make him take videos!  8-)
Thunder Tiger Phoenix BX
Associated RC18T2/B2 Kit
Walkera 5G4Q3
TechOne Angel
Hiller 450 v2
Futaba 7c 2.4Ghz
Slash 4x4 (sold)

iamahuman

Planning to open it up in 4 days.All closed away right now.First priority would be to do the tube mod so that I can begin off-roading.And then it will go to full power.




I guess the ESC can handle a 200A continuous load but I'm pretty sure the motor won't draw more than 100-120A on full throttle.

"Chuck Norris once overcharged a lipo. Thank him for the Sun."

SSC LCG Slash 4x4.
JQ THE eCar.

traxxrc1

I'v heard motor is a 75A rated motor, man, mamba SCT is rated about 100A, so i guess velinion motor might be aroung 70
I'll be back.

rajathv8

At such high currents the HK lipos cannot be used right? 2200mah 30C = 66A

traxxrc1

#36
2200 is never meant for cars buddy, manual always says minimum batery requirement which varies from 3000mah upto 8000mah for extreme performance
I'll be back.

rajathv8

Haha ok got my facts wrong then :)

iamahuman

For 1/10 scale cars,4600 mah is the lowest one can go.5000 mah around 30C is ideal for most applications but some lipos do offer 60C discharge rates.The MaxAmps ones offer 160C rates but have not been tested nor are they necessary in off-road racing.They are meant for drag racing.

1/8 scale cars use 4s,5s,6s lipos but usually they use 4s lipos.
"Chuck Norris once overcharged a lipo. Thank him for the Sun."

SSC LCG Slash 4x4.
JQ THE eCar.

traxxrc1

No man, it depends on both mah and C rating.
It depends on what car are you running.
A simple 35-60A ESC and motor dont need high capacity batteries , any pack with a discharger of around 20-25C and 3600mah will be more thn enough, though for 1/8 you need atleast 120A thus a 5000-6000 mah 30C lipo would be needed.
I'll be back.

rajathv8

Do NiCad and NiMH have any discharge rates?

iamahuman

"Chuck Norris once overcharged a lipo. Thank him for the Sun."

SSC LCG Slash 4x4.
JQ THE eCar.

traxxrc1

Obviously yes, its just a unit of discharging, but they are significantly low compared to lipos.
Not sure but they are max 5C.
It depends with the size of cell. AAA will have least while D size will have max. What we use i.e. Sub -C have decent rates of discharge.
The discharge rates of niXX cant be significantly improved like lipos and thats the reason why mah comes into play. The low amp capability of nimh sue to low discharge rates is overcome by high capaciy in terms of mah
I'll be back.

Samanth

@rajathv8 - every single electrical output has a discharge rate in C (Coulomb)  :)
Rcpowers Extra 300
JAS-39 Gripen
F-117 Nighthawk
HK EPP-FPV 1.8m plane
Trex 450 Pro
Spektrum DX6i

iamahuman

Still weight is a problem.My 7 cell 3000 mah will be heavier than a 5000 mah 2s lipo.

The ONLY advantage Nixx had was low cost but HK has removed that too.These days,some Nixx packs go for more than equivalent lipos.
"Chuck Norris once overcharged a lipo. Thank him for the Sun."

SSC LCG Slash 4x4.
JQ THE eCar.

rajathv8

Quote from: Samanth on April 10, 2011, 01:53:44 PM
@rajathv8 - every single electrical output has a discharge rate in C (Coulomb)  :)

Not really, some are specified in amps and some in watts.

rajathv8

If max is 5C @ 3000mah, max current = 15A.
What happens in a Nixx is discharged at a higher rate. Lipo puffs up so what happens with nixx?

iamahuman

And C is not for coulombs.It is for "capacity".So for a 5000 mah pack,1C is 5 amps per hour.So if a number is 'n',it means 'n' times the battery's capacity.So 40C on a 5000 mah pack is 200 amps for 90 seconds.
"Chuck Norris once overcharged a lipo. Thank him for the Sun."

SSC LCG Slash 4x4.
JQ THE eCar.

iamahuman

"Chuck Norris once overcharged a lipo. Thank him for the Sun."

SSC LCG Slash 4x4.
JQ THE eCar.

traxxrc1

Sorry, would like to ammend that, 5C is i think the rate for AA, not for sub C.
Sub C will be higher IMO like 10-12C, still not sure.
I'll be back.