Traxxas Titan

[mickvk]

I would imagine you would be correct, running 50% throttle KILLS esc's. Unless their is something we don't know about

I for sure would not run 50%. If you want to teach your kids play the safe route and get a brushed boat like the RIO EP to learn on. Sure beats smoking an esc although I would imagine traxxas would cover it on warrenty.

When full current is left to be modulated by the ESC/throttle, the pulse width change is very inefficient resulting in heat. If the system is already loaded near its limit, could definitely result in a failure.

I believe that if the current is limited on the input side of the circuitry and then the throttle sees half power as the "new" 100%, then there's no problem what so ever with the pulse width efficiency. I bet that will be the case.

[Diesel6401]

When full current is left to be modulated by the ESC/throttle, the pulse width change is very inefficient resulting in heat. If the system is already loaded near its limit, could definitely result in a failure.

I believe that if the current is limited on the input side of the circuitry and then the throttle sees half power as the "new" 100%, then there's no problem what so ever with the pulse width efficiency. I bet that will be the case.

[Brushless55]

I understand how esc sorta work and I agree that running partial throttle makes them work a little harder. With that said. My cars and helis don't run at full throttle the whole time and I have never ever have an issue with them running hot and burning up.

Even running a Heli or car at part throttle does not load up the esc the way a boat does
they pull much less constant amps than boats
the hull is constantly under drag and causing the esc and motor to work harder than a heli in a hover or a car running across the ground
the amp spikes from cars and helis is when the throttle is punched on either

[Brushless55]

Actually there is a tremendous amount of info on the Spartan Site. This is what they say about the ESC specifically in the Spartan

It's very possible running at 50% is going to hurt the esc
and having reverse on a boat with a directional cable is a bad bad idea!

[Brushless55]

There's no way they would say you could do that (Just like they have said on most of their other vehicles) if you couldn't. They would have to cover it on warranty since they said you could do it.

its possible they never gave the 50% setting a real run for it

[Jacked1]

I work a lot with mosfets and other switches at my job along side people that have dissertations in gate signal controllers and as long as the CPU that controls the gate signal to the fets isn't working any harder there shouldn't be a problem. Really there should be less strain on the mosfets at lower speeds because they aren't on as long and aren't dissipating as much power. The applications of the fets i use get up around 100Mhz so the switching speeds shouldn't really be an issue.

Through personal experience with the boats every time i run at a lower throttle (as long as the boat is on plane) all the components come in cooler.

If it does blow the esc for any reason I would say it would be the CPU if it runs fine on full throttle.

JMO

[Snowride]

It's very possible running at 50% is going to hurt the esc
and having reverse on a boat with a directional cable is a bad bad idea!

Only quoting what they have on their specs. If there are going to be issues, they better change those specs or be ready to replace stuff under warranty.

As for the reverse, it only looks like there is 15% power so I would assume you cannot harm the cable all that much if any with so little power available. They do also mention this is a new esc was designed specifically for the Spartan which I guess must mean they have tested it with good results on all settings. Personally I like the reverse as using it can unfoul a weed filled prop which worked very well on a RC Seadoo I used to own. Time will tell.

[Rumdog]

Well, weeds on a prop, os going to cause all sorts of drag. Which WILL unravel a cable.

[Snowride]

Well, weeds on a prop, os going to cause all sorts of drag. Which WILL unravel a cable.

With only 15% power available? Point was I was able to reverse to get most of the crap off the prop and the boat would at least now move so I could get back to shore to clean it up properly. Sure beats going out for a swim or any other means of rescuing the boat. Nice option to have if it works.

[Rumdog]

I'm not going to keep bickering about what the wrong direction of spinning a flex cable will do.
If your prop is loaded with weeds, you should be more worried about the amps that will be reaking havoc on your gear anyhow.

The esc isn't going to do me any good in ANY of the modes anyhow. Unless it has a hovercraft, or snow mode.
When is the release again?
You really are going to need a "Snowride."

[Snowride]

I'm not going to keep bickering about what the wrong direction of spinning a flex cable will do.
If your prop is loaded with weeds, you should be more worried about the amps that will be reaking havoc on your gear anyhow.

The esc isn't going to do me any good in ANU of the modes anyhow. Unless it has a hovercraft, or snow mode.
When is the release again?
You really are going to need a "Snowride."

Actually my "Snowride" is my 177hp sled.

[keithbradley]

I dont buy into that "50% power makes more heat" stuff. I have heard the theories and they are riddled with holes. It just doesnt make sense and I have yet to see real evidence of this. I do, however, beleive that running at part throttle can require just as much dissapation efficiency as full throttle, meaning that you cant "under esc" a setup and just run it at part throttle.
Twisting on the cable back and forth over time is obviously going to have an effect regardless of how much power is replied in reverse. 15% power is better than 100%, but I would still disable it personally.
Besides, reverse is useless in FE boats (some uses in scale boats maybe...). All it does is suck the back of the boat under water and push water over the transom which is undoubtabley going to leak into a boat that uses body clips to hold the hatch on.
If you need reverse on your boat to maneuver it where you need it to go, good luck running 50mph

[keithbradley]

Actually my "Snowride" is my 177hp sled.

That's it? My car has more HP than that!

[johnf]

Keith, what's the turbo avatar about?

[sharkbite]

It's not the titan anymore. It's the spartan now......LOL The spartan come on!!!!