Tamiya Teu-101bk Electronic Speed Controller

[Teej84]

Hey guys i still have the Tamiya TEU-101BK Electronic Speed Controller and I am going to use a sport tuned motor and an upgraded battery.

I know I can use the sport tuned motor on this esc but what battery? Can I wallop a 4300mHA battery in it or is it going to blow the esc?

The other thing is what about the old tamiya MSC can I wallop bigger motors and batteries through this or will it melt! How high can I go!!!

Thanks Teej

[r6stu]

Hey guys i still have the Tamiya TEU-101BK Electronic Speed Controller and I am going to use a sport tuned motor and an upgraded battery.

I know I can use the sport tuned motor on this esc but what battery? Can I wallop a 4300mHA battery in it or is it going to blow the esc?

The other thing is what about the old tamiya MSC can I wallop bigger motors and batteries through this or will it melt! How high can I go!!!

Thanks Teej

Batteries make diddly squat difference! as long as your using 6 cell 7.2v then all the mAh rating means is a better runtime.

[Pubert]

..... the mAh rating means is a better runtime.

Is that strictly true, because I ran my old 2100 then swapped it over for my 4300 and it seemed to make a considerable difference to the acceleration etc.......maybe it's just the placebo effect......

[Mad Ax]

Is that strictly true, because I ran my old 2100 then swapped it over for my 4300 and it seemed to make a considerable difference to the acceleration etc.......maybe it's just the placebo effect......

I've often wondered this. The guy in my LHS insists that a higher mAh rating = more 'power' from the battery. However, power is a function of voltage and resistance; the voltage is 7.2v from any 6-cell pack, and the resistance is determined mainly by the motor winds, and marginally by the ESC and wiring. So technically it shouldn't make a difference.

However there is one school of thought that suggests a higher mAh battery can supply the voltage faster on demand, much like running capacitors on the motor to "store" power for quick acceleration. I don't know how scientific this theory is.

Finally, you mention that you ran your "old" 2100 - as batteries age they don't hold their charge so well. The internal resistance of the battery increases as the cells denature, so the peak voltage drops as the external resistance increases. Basically old batteries lose efficiency, which may be why the newer 4300 seems to run faster. I also tend to find that higher mAh batteries are of a better quality and don't denature as fast as cheap 2100s. This may also be the placebo effect - it cost more, ergo it must be better

[Teej84]

Lol thanks guys once more looks like I'll be hitting the top end of the market for my batteries, my old ones are 8 to 10 years old!!!!!

sigh so much on the shopping lists and so little money, do you guys recon my missus would complain if I got "her" some r/c bits for her birthday present... if I did this I could "inherit" quite a few hop ups from her!!!!!

[Wrecked]

More mAh = lower voltage drop under acceleration = better accelaration.

Top speed is unaffected unless you are gearing too high.

/Jimmy

[Teej84]

More mAh = lower voltage drop under acceleration = better accelaration.

Top speed is unaffected unless you are gearing too high.

/Jimmy

OOOOOoooohh this explains it then! Excellent! Another quick post to say on a ESC TEU-101BK whats the most powerful motor you guys would run? I am looking at a sport tuned for now but I will prob be in a quest for more power soon so what motors?

Thanks Teej

[igbandy]

The limit for a 101 is 21 turns istr.

Depending on how you charge a battery pack will have an effect on its performance.

If you say charge it at 2amps, it should last a little longer than charging it at 5amps. But if you charge it at 5amps it will have more power/punch than being charged at 2amps and have a little less runtime.

[terry.sc]

The TEU-101BK is limited to 27 turn stock motors and the Sport Tuned, that's it. people have used lower turn motors with varying results, some work fine and others shut down quickly but it is likely to overheat and shut itself down before it blows up.

Battery capacity makes no difference to performance. There can be performance differences due to age of the battery and the construction of the batteries, for example IB4200s are used by racers as they have a little less internal resisitance and a little more voltage (0.1v!) so gives a little more punch than other cells with both more and less capacity. This difference isn't noticeable unless you are racing (a very slightly faster laptime) and everything else is tuned to the limit, bashing will give no noticeable difference between the cell types.

If there is a performance difference it is due to the age of the cells and how they ahve been looked after.

BTW if you do buy new cells do not buy IB4200s, they are the preferred cells of racers, but they are also the most unreliable cells available. Most are fine, but some have been known to be dead when new, others have lasted a dozen charges before they die.

[Twist.]

Also, the higher quality cells, the bigger punch they give. My tenergy packs were terrible, giving me the punch a dead battery would, but my vapexs made it roar to life.

[Wrecked]

Higher quality cells might also have a higher burst rating and less inner resistance (= less voltage drop under acceleration.)

More info here: http://rclovers.com/whatisCrate.htm

/Jimmy