just a guess

[RC10GTMark]

Im into nitro, I dont really like electric, but you electric guys got some goodies on your cars/trucks that I know nothing about, and that bothers me.

Lemme see if I get it. You got your batteries, I understand those. Then you have your reciever and ESC and your servos. What is the ecs's function, to get power to the motor? does it have anything to do with the steering servo?

Then motors, im guessing lower turn motors are faster, more powerfull??? What do different brushes do, I can kinda guess how a comm laith (sp) works and it's purpose, what about the difference between hand and machine wound motors.

Im bored and I here people talking about this alot, im curious. Im also building a rocket powered car for fun, maybe some of this will come in handy.

[jeepinator]

Hey, come on Leet, be nice ;)
To each his own. I am glad there are options in the RC world.
I do, however, agree with you on the performance debate.
I have never, in my more than 10 years RC experience, seen a nitro RC vehicle be consistently faster than it's electric counterpart. By fast I mean lap times, qualifying times, etc

To answer the question:
The ESC is tasked with providing control over the electric motor. It accomplishes this by pulsing electricity to the motor. This is where the term "high frequency controller" comes from. The higher the frequency of the pulses, the more efficient the motors runs. Also you get smoother response and more resolution throughout the range. The ON vs. OFF time of the pulses is what determines how much power is produced. It is a simple square wave. The more ON time you have the more power the motor produces. At full throttle the OFF time becomes zero, essentialy delivering the packs energy directly to the motor.
In regards to motors, I have run out of steam ;) There are literally hundreds of posts in here describing what you seek. I suggest using the search function.

EDIT: Spelling. Why oh why don't I learn to proof read before hitting "submit" ?! :rolleyes:

[ 06-23-2001: Message edited by: jeepinator ]

[Leet TC3]

Ahh, was all in good fun. :)

Although, I did find Mark's post to be a bit condescending...

[combones]

It is cool that electric smokes nitro time after time(on tracks, not open street or dirt straights), and with the newer batteries and motors, run time is just about as long!! :p

[RC10GTMark]

Thanks jeep. Leet yes electrics are more consistant, and you may not like the polution nitro puts out, thats your opinion.

Everyone is intitled to one, I like nitro. I like the fact I can tune it, the cool noise, the longer run times, the stronger low end and just tinkering.

I see all this stuff about electronics, and I like to know what people are talking about, I dont see what is wrong with asking.

No offence to all the cool people, but leet and some of you other electric people are *** 's.

[RC10GTMark]

combones, run times can never be matched between electric and gas. Lets say we are in an indurance race.

You would have to switch your battery, which means taking off the body. You have to have more batterys and they have to be charged. In a long race this could be expensive.

Nitro one tank may not be as long as some new batteries, but I can just pull a zip tie to open my tank, dump in some gas and im good to go again.

[Bj737]

I know I am new here but Mark...with the new batterys...super efficient speed controls...and high capacity batteries runtime differences are dropping fast...and if you put in a larger tank (more than 250cc..think thats right..haven't looked at a nito car in years :( ) you will see your "awesome low end" go right out the window...no offense...just hate seeing everyone getting a razz :( . But I DO agree with your statements on removing your body to change your packs and the cool noises of nitro. Hand and machine wound motors are different, hand wound motors are wound by hand (I'm sure you knew that) and are therefore wound to very close tolerances meaning more efficiency and punch (but also more cost), important when building a super car, machine wound motors are wound by a machine (sure you knew that too) and are therefore not wound to as precise of standards, so you lose a little efficieny and punch, but save some greenbacks. Oh well...carry on your discussion ;) .

[jeepinator]

Mark, you do indeed have a right to have a stupid opinion :P ... just kidding.
Nitro has a few advantages over electric. One of them, however, is NOT bottom end accleration. Electrics clearly own nitro in this regard.
For proof check out the world records for RC drag cars. The nitros are WAY slower. Also, I would like to refrence you to the article RCCA did on the E-Maxx vs. T-Maxx. They even have graphs showing the E clearly outperforming the T in the low end. And then there was the "tog-o-war" contest in which the E SMOKED the T (hehe, how ironic ;) )

Electric DC motors produce maximum torque at zero RPM. Nitro engines produce max torque waaay up there. I don't remember at what RPM max torque would be for a .12, but it is probably more than 20,000 RPMs.

Anyway, I thought I would clarify that little tidbit of info for you ;)

[Interceptor]

Ya know Mark, I feel the same way about some of you Nitro guys...

It seems that we need to be less concerned with what someone else is running and just be happy with what we have. Drivers need to drop their superiority complexs about their equipment and just have fun. I don't want to see this hobby go like paintball did. Nitros are cool, but electrics are easier for those of us who can't tune an engine for crap :-)

[ 06-23-2001: Message edited by: Interceptor ]

[Leet TC3]

Well, as they say, ignorance is bliss.

I remember this everytime I see a nitro car barely bump into something and lose power. I am really ignorant as to how this keeps happening.

I really don't know why, in practice sessions, a good sedan with a modified motor can smoke even the fastest nitros. Why does this keep happening?

I also really don't know much about all that pollution spewing from those noisy, smelly, messy 2 stroke engines. And that bothers me.

;) :D ;) :D ;) :D :) :)

[ 06-23-2001: Message edited by: Leet TC3 ]

[Leet TC3]

Mark - I have no problem with your liking Nitro. But your original post is dripping with sarcasm, and I responded to it.

You really think my perception of nitro cars polluting is just MY perception? Are you serious?

Two stroke engines pollute in the worst way, even the small blocks that you run. Anytime a large city has a "spare the air" day due to high levels of pollution, the FIRST thing they ask you to do is to NOT run 2 stroke engines.

Frankly, you can have your run time. I would much rather have a car that runs consistently and runs faster.

[B3Tyler]

4-stokes have TREMENDOUS low end compared to 2ers and your tank last twice as long :D Actually, the fastest rc car in the world is the rc10L3O with a whopping 111 mph, 11 mph faster then nitro rs4.

[RC10GTMark]

Fastests 10th scale... 111mph.

[ammoace]

I run nitro and electric cars and they both have thier individual appeal.
Jerry