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Old 10-20-2003 | 02:02 PM
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seanreit
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From: Cedar Park, TX
Default RE: 8411 Alternative.

Turbulence, consider this:

The RC electric cars typically run on a 6 cell 7.2 volt battery. So far as I know there is not a voltage regulator dropping the voltage of the battery to 6 volts for servo useage, but in regards to what I'm about to say, if someone knows for sure that there is a voltage regulator, please chime in. I say this because:

I called Horizon tech support a couple of months ago wanting to know what the maximum voltage an 8411 could operate at.

I was told 6 volts never more. I said dude, you are full of crap, I want to talk to a supervisor. He asked why and I said that a 6 volt power pack charges to over 8 volts in some circumstances and that I know for a fact that the 8411 operates correctly from 6 volts to at least 7.5 volts and possibly more.

He then put me on hold and came back and said well, it's a five cell pack. Never use more than a 5 cell pack without going through a regulator. I was going to push the issue farther, but he was clearly embarrased and I work him hard on the full of crap comment so I let it go. I really wish there is someone out there who has data showing what safe voltages you can reach with an 8411. Maybe even go to 9 volts for *****g out torque with say a hot charged 6 cell pack?

What I further wanted to know is what's coming out here, current draw. Their website does not publish this information. I'm tired of calling those guys at horizon cause the questions we ask are over most of their heads and I don't know where to go to get real information.

In other words, Doug came back and said "no, it's a car servo not an airplane servo" and he based it on "current draw". this is a typical answer to a quesiton like this, and when questioned further on current draw, Doug says, "well, I don't know".

If the current draw of the two servos is nearly identical, there should be no reason not to swith the servos in either application. In fact, according to Doug's initial response, if you put the 8411's in the car, you'll be able to go longer with less draw. how long? Hmmmm. My guess without any data is 10 to 20 seconds. Measureable, but insiginificant considering.

Don't mean to bust on anybody here, but a lot of opinions go around here with no data to support it. To support Doug'sstatement, I believe you have to have current draw information. Which I would very much like to have!

Sean

Also, I forgot to mention, if there is not a voltage regultor on the RC car's, then I'm guessing that it's ok to run a 6 cell hot charged battery pack as your receiver pack in an airplane. Does this conclusion seem ok?