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View Full Version : new limited 540 chassis?


GaoWee
11-20-2003, 08:41 AM
How many people are going the new limited 540 chassis?

hated1racing
11-20-2003, 11:15 AM
i already pre-ordered mine. they are going to look sweet!

GaoWee
11-20-2003, 11:23 AM
SAME HERE..HEHE..I GOT THE 540 WITH LEHNER 1515 BL MOTOR
THIS NEW CHASSIS GOING TO GET 12 KAN CELL AND A BIG HACKER B50 8S..HEHE..

BLiND
11-20-2003, 06:38 PM
I'm on the list as well... :)

STREETRACER1128
11-22-2003, 10:31 PM
Originally posted by GaoWee
SAME HERE..HEHE..I GOT THE 540 WITH LEHNER 1515 BL MOTOR
THIS NEW CHASSIS GOING TO GET 12 KAN CELL AND A BIG HACKER B50 8S..HEHE..
WHOOOOOOOOOOOOA!!!:eek: :eek: :eek: :eek: :eek: :eek: :eek: :eek: :eek: :eek:

GaoWee
11-24-2003, 09:18 AM
:) i'm hop the 12 kan cell will sit 6cell on each side then i can mount the rest of the stuff lower for better handle's.

i'm running 6and 8 cell on my motek exo chassis and it runs fast..but
its hard to make it stop and turn at high speed..need better
tires..

kelvinater
11-30-2003, 07:00 PM
Would 12 kans be as fast as 6 sub-c cells?

Cardboard
11-30-2003, 08:10 PM
No, not even close.

GaoWee
12-01-2003, 08:20 AM
Hmmm....dont know untill you try..see the kan cell are rated at 1050mah or so..and 6cell are rated at anywhere from 1700mah or so..now if i was to compare it to say some sanyo 2400mah i would need at least 2kan sell wire up in parrallel or so for 2100mah but since i'm running a brushless motor i need the voltage..
ie:
12-kan x 1.2v=14.4v at say 30amp draw =432watts
6sanyo x 1.2v=7.2v at say 30amp draw = 216watts

of course running time will be lower with the kan cell since they are rated at 1050mah only..but with a brushless motor i can
run at lower amp draw since its more efficent..
ie: 80% vs 50-60% of brush motor..or so..give it 30% more efficent. so i can run a brushless 30% less power and it would be the same as a brush..or the same amp draw as a brush motor and have 30% more running time giving the same cell is use.

now with mod motor the amp draw can go up as high as 40-50amp and the brushless can go even more..with a lehner 1520 i think it was that..in 2-3 min of drag racing nitro cars up and down the street.(beat yoko gt-4pro,nitro tc3, nitro rs4 racer2) when i finish my 3300mah gp match cell was so hot i could cook an egg on it. and all the cell was leaking..wasted $80 set of cell in 3min of racing.. :(

i try again with some unmatch 2400mah on a tc3 12cell and i was smoking everyone..my car started to brake from the torq. must have been topping out at close to 50-60mph and i was leaving black burn out 2-3feet off the line..

giving my
bl motor kr of 4000rpm X 14.4= 57600rpm
or my 1525 kr of 9000rpm x 14.4=129600rpm
reddy 8t mod kr of 6000rpm x 7.2= 43200rpm

so more rpm more mph..

if i'm wrong in any point plz point it out..thanks all

Cardboard
12-01-2003, 12:30 PM
Those amp draw numbers are incorrect, I think.

GaoWee
12-01-2003, 01:54 PM
yeah i know i'm just saying...my mvp draws 28amp max/peak and 18cont.

my hacker b50 8s draws about 59-60amp max/peak and about 30amp cont.

my lehner 1515 draws about 45amp max/peak and about 20amp cont.

and thats tested with a multi meter attach to the batter output

Cardboard
12-01-2003, 04:07 PM
I doubt that standard 2/3as can put out that much.

GaoWee
12-01-2003, 04:30 PM
yes yes i know the standard 2/3a dont put out that much
the most i eva got from standard 2/3a was about 10amp before
they pop..but the kan 2/3a are rated up to 30amp or so and from there web page they are rated up to 40amp..dont know untill you try..thats what i said..hehe..blind can you help with the kan 2/3a rating?

BLiND
12-01-2003, 05:58 PM
I've loaded the kan's to 30amps and they hold up fine.

A good comparison would be the CP-1300 2/3sub-c cells.

cardboard, I know you have no idea what you're talking about, so why bother argueing with gaowee?

I would try to keep the load under 25amps on the KAN's in order to not kill them, just to be safe.

aktiondan
12-02-2003, 12:05 AM
I think that the KAN cells may actually be capable of delivering the current required to run a mild brushless or stock 540 motor. Two things to consider: sustained (and peak) current draw and rated mAh (and the two are NOT the same thing). How much current can any one cell deliver before either melting or catching on fire? That's sustained current draw. Now for how long can that cell deliver that much current? That's the mAh rating.

The difference is obvious when you compare a generic 2/3A which is rated at 1100mAh and the KAN's which are rated at 1050mAh. A rookie would look at the numbers and blindly say, well the 1100's are better because the mAh is higher. But not so, as many people have proven, the KAN's are capable of delivering up to 30 amps whereas the generic 2/3A can only push 10-15 amps. The mAh rating means next-to-nothing in this case. The KAN's are a better cell, overall they will run cooler when pushing only 10-15 amps, and last longer than a generic cell that is being pushed to its limits 100% of the time. We never did any tests with the KAN cells, I'm not even sure they were out at the time (but I'm guessing that they were) however the generic 2/3A were useless with the 540.

There was a time (during our design stages) when we dared even to go to a smaller cell than the 1/10th scale favorite--the Sub C. Chris was running exsluslively Sub C's in his prototypes and swore by their current delivering capabilities (being a 1/10th scale racer guy). But Sub C's are so big, and heavy, and actually overkill for stock motors, which rarely draw more than 25 amps. That's when we searched high and low for a cell that was small, yet still capable of delivering the juice we needed for at least stock motors (and then something that could still push a low-turn modified motor) without starving the motor to death. The CP1300/1700SCR series became the obvious candadates. These cells can be found in large-scale airplanes with motors that are actually bigger than 540's! But in the end, a great cell for the Hybrid (although a bear to actually make a pack out of, right BLiND?) ;)

Anyway, I've gone on, as I tend to do. I think that anything should be done at least once. A 12-cell brushless 540 Micro? Yeah, that's insane, but should be done, at least once. My only recommendation, and I know this is a hard thing to do, but it's to ramp up your adrenaline. Getting more RPM's will only take you so far. Wind drag, traction, throttle control, steering trims, and your overall workmanship when it comes to building the other 75% of the car, will be your real limiting factors. The little things can take you a long ways, like having no slop in the steering, having a prefectly trued set of foams, a perfect gear mesh, diff action that is not too tight, but not too loose either - I mean the list goes on and on as far as getting usable performance out of that much speed. Don't focus all your energy on just the motor and cells, and assume that everything else will just follow suit. After all, the only thing we really sell you is a chassis, that's it. Our chassis alone won't make your Micro super fast, or super slow, or "only capable of driving in straight line" - it's what you put on our chassis that makes the biggest difference.

And on that note, to everyone who preordered a kit - they all shipped today (being Monday in case you read this tomorrow). We're anxious to see what kinds of things people can come up with, from the most basic, to the most extreme. Keep 'em coming, and don't forget we have a 540 Forum on here as well for exlusive 540 questions and answers. :)

Dan

BLiND
12-02-2003, 12:10 AM
Originally posted by aktiondan
But in the end, a great cell for the Hybrid (although a bear to actually make a pack out of, right BLiND?) ;)


pfft, you had to remind me!

man, worst couple weeks of my life, building 50 packs for hybrid owners...lol!

GaoWee
12-02-2003, 08:08 AM
eekkk...yup..thanks blind for the 540 chassis..hehe..and the battery..

Cardboard
12-03-2003, 05:41 PM
Originally posted by BLiND
I've loaded the kan's to 30amps and they hold up fine.

A good comparison would be the CP-1300 2/3sub-c cells.

cardboard, I know you have no idea what you're talking about, so why bother argueing with gaowee?

I would try to keep the load under 25amps on the KAN's in order to not kill them, just to be safe.
Standard KANs could not keep putting out that 30 amps for a long time. So i guess they would do decent for stockers, which draw about 18 amps, but I would avoid running them under high draw, they'll probably vent.

BLiND
12-03-2003, 07:55 PM
no, they would put out the 30 amp load until their capacity is exhausted, which is very quickly.

KAN's are designed for high load discharge, the only way I've managed to vent one is by soldering half a pack correctly, then soldering the other half in parallel. That will make them pop.

GaoWee
12-04-2003, 08:11 AM
wont know untill we try..i got my chassis today..

Pipeous
12-04-2003, 08:51 PM
Originally posted by BLiND
no, they would put out the 30 amp load until their capacity is exhausted, which is very quickly.

KAN's are designed for high load discharge, the only way I've managed to vent one is by soldering half a pack correctly, then soldering the other half in parallel. That will make them pop.

Another late Friday night cel pack lmao

BLiND
12-04-2003, 09:01 PM
Originally posted by Pipeous


Another late Friday night cel pack lmao

not a friday, but you geussed it, put the pack together around 4am and just wasn't alert enough to know the difference until I heard a hissing sound ;)

at least the trashcan didn't blow up. That sucker vented for almost half an hour!

superlowfat
02-21-2004, 07:41 PM
i saved up for a year and im finally getting the 540 for the second time. When your thirteen and grounded all the time(no allowance) it takes awhile to save up120 bucks. Well im super siked. Dan said that they might ship in mid march. NICE.

RadiShack
02-25-2004, 11:58 PM
How about 12 Kan cells at 7.2 volts.6 cells parallel with another 6 cells,therefore pushing well over 60 amps ,and capacity at +2100 mah!!!Can this beat 6 sub c cells???????

R0XoRiZoR
02-26-2004, 10:55 AM
pfft.. electrics.. always so confusing.. amps.. voltages... blegh..

:-(

my mind is to tired to bother...
maybe i should retire and play golf..

GaoWee
02-28-2004, 08:12 AM
RS yeah if your comparing it to some 2000mah subC
but doing that will bring on the extra weight..better off
with subc..unless you going to be running an extremely
hot motor..hehe..

mah=running time.. IE: fuel tank
volt=resistant level IE: fuel line
amp=flow of power IE: fuel flow

volt X amp = power level

mah=running time=2400mah=2.4amp for 1hour=5amp for 30min=10amp for 15min=30amp for 5min... or something like that theres a way to find out..i was told if you run 2400mah battery at 10amp or less you can get a round 15min

i ran a bl with 2400 on my tao4 1/10 and i get around 1000sec or a bit over 15min thats with the timmer on my hitech lynx 3d so it might even be a bit more..that was at a 1/8 track..so you can see that i wasnt going full thro all the time..