Warning Regarding Steering Angle

[colbynobo]

Just wanted to warn the world about something silly that I learned after building my Trail King. After installing the electronics and being wowed about how much steering was present, I got stupid and cranked my end point adjustment (EPA) to the max level. Put it on the floor, turned the steering to full lock and gave a gentle pull to the throttle. It hesitated for a moment, drove forward about 5mm and then my brand new Hobbywing 1080 gave the magic smoke and died the death. I should have known better. Hopefully, someone else can learn from my stupidity.

The Trail King has gobs of steering, but maybe one should take a conservative approach towards utilizing it.

[PERCY]

Yeah that sucks, I have no issues what so ever with mine been a great kit


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[Xx Losungen xX]

Steering angle wouldn't cause that

[kincer]

Originally Posted by Xx Losungen xX

Steering angle wouldn't cause that

I was thinking the same thing, broken cvd maybe but not a burn't esc. I could be wrong but don't see how it's possible.

[colbynobo]

I agree, I could scarcely believe it myself when the smoke shot out and a light started blinking on the ESC. I've been running 1080s for years in my other rigs and this is the first time one has ever failed on me. I removed it and installed an Axial AE5 that I had laying around and now the Trail King is back in commission. It's a bit noteworthy that before the catastrophic failure, it was the least smooth 1080 I've ever encountered. I'll have to do a bit of research about what sort of things people encountered when they were using bogus 1080s. I doubt that's the case here, but it does all seem strange. I want to accept full accountability for so blindly maxing out the EPA without considering what would happen if things went wrong.

[kincer]

I've maxed out EPAs on several rigs with big time steering angle using different esc's including 1080s and have never smoked one, I've broken cvd's and bound things up and made some horrible noises though.

[Topher Builds]

Perhaps your servo draw at full lock was too great for the 3 amp bec of the hw1080. What servo?

If you put the truck on the ground when it isn’t on, can you push it by hand while the wheels are turned fully?

[colbynobo]

Originally Posted by Topher Builds

Perhaps your servo draw at full lock was too great for the 3 amp bec of the hw1080. What servo?

If you put the truck on the ground when it isn’t on, can you push it by hand while the wheels are turned fully?

Not hardly what one would consider a powerful servo: Savox SC-0251MG. After I put the AE5 in it, I dialed the EPA back to normal and took it for a quick spin in the garden. Everything seems fine in terms of driveshafts and drivetrain. I'm still trying to firm up what body and tires I want to run so I haven't taken it out for a longer drive. I just purchased a Proline Metric body yesterday afternoon so that's probably what I'll top it with. Tire wise, I will either run the 4.7" Axial K02s or the 4.35" Proline K02s.

[Xx Losungen xX]

Well that servo is above what the bec is rated to handle so definitely could be the problem.

[Topher Builds]

I think that has a max draw of 5.5 amps which at full lock may be enough to smoke the esc with the 3 amp internal bec.

[kincer]

Aha I've learned something new, didn't think of it that way.

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[colbynobo]

Originally Posted by Topher Builds

I think that has a max draw of 5.5 amps which at full lock may be enough to smoke the esc with the 3 amp internal bec.

Hmm, I guess I should start thinking about this whenever I'm planning a build. I've gotten complacent in that muscle memory kicks in whenever I'm in the hobby shop or online shopping and I just grab/click on the Hobbywing 1080.

I should probably start a different thread, but when I started to mockup my Proline Metric body I see that the battery tray is going to mean a deeper cut in the cab portion of the body. Comparatively when I drop the same body down onto my Element Enduro it looks like the only thing I need to alter is the type/location of the front body mounts - no crazy cuts. I have a Proline 1991 4Runner and a Proline JL Rubicon body in the consideration for the Trail King. It looks like the new Rubicon JL is short enough that I'd have to do some trickery to compensate for how far out front the chassis rails stick. I'm not going to run a winch so I don't need bumper space for that. Sadly I have a history of hacking bodies and then quickly regretting it once I decide on a different size tire.

[ferp420]

this pretty much discribes my experiances with the hobbywing 1080 but i wounder if you could run a exturnal bec and just leave the red wire hooked up if it would work like that ive had several escs burn out the inturnal bec and work with a exturnal bec

[Killa-Cotton]

The new Reedy Sc480x esc is an equivalent esc to the HW1080 but has 5amp bec. I have a couple of the these little esc's and they perform really well. You can get one with a program card for less than $50.

[CarveyHarvey]

I also run the 1080, but I only run 2s. This lets me use the bec @ 6v for led's, and I just hardwire a servo plug on the esc input wires to run direct battery to the servo. Just servo signal wire to the receiver. Works great for me. You can kill a battery if you don't unplug this setup when you're done.