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high voltage servos

Old 11-25-2008, 01:43 PM
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merctech
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Default high voltage servos

Hey anybody use the high voltage servos? Suppose to run on 7.4 lipo. How would it work with your receiver. I have a ar6100 would it work with this receiver.
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Old 11-25-2008, 01:46 PM
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They are extremely expensive - and remember fully charged 2cell pack is 8.4v.

http://www.horizonhobby.com/Products...dID=JRPS8711HV

At $199 each - that buys a lot of voltage regulators!

Mike
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Old 11-25-2008, 02:55 PM
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merctech
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Where can you get these regulators and will they work on a 2cell lipo.
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Old 11-25-2008, 03:16 PM
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Originally Posted by merctech View Post
Where can you get these regulators and will they work on a 2cell lipo.
Yes they work with 2s and several handle much higher input voltages.

I have used the following:
Turnigy
http://www.hobbycity.com/hobbycity/s...idProduct=4319
Castle
http://www.castlecreations.com/products/cc_bec.html

But my favorite are the Dimension Engineering ones:
Park
http://www.dimensionengineering.com/ParkBEC.htm
Sport
http://www.dimensionengineering.com/SportBEC.htm

Mike
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Old 11-25-2008, 03:40 PM
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thanks, would it be practical to use this set up for a gas plane.
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Old 11-25-2008, 03:45 PM
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Originally Posted by merctech View Post
thanks
No problem - one other thing to remember - you can adjust the output voltage on most BEC's. Some mini/micro servos DO NOT work well on 6v others do fine.

Mike
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Old 11-25-2008, 04:03 PM
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I was thinking going this route because I already have a lipo charger and batts. What mah would be good for running 6 servos in a warbird?
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Old 11-25-2008, 04:43 PM
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Originally Posted by merctech View Post
I was thinking going this route because I already have a lipo charger and batts. What mah would be good for running 6 servos in a warbird?
Depends on size and type of servos and the size of the war bird. Digital are VERY power hungry you might need a ~2000 mAh pack to get 6-7 flights.

If they are standard servos a ~1200-1800 will be gobs.

If it is a small warbird - a smaller pack can be used. For example in my twin OV-10 I use a very small 700 mAh pack. With only 3 servos it will power the on-board radio all day long.

Mike
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Old 11-25-2008, 07:18 PM
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Ive been thinking about the h9 hellcat. Trying to get a list of everything I need and already have to use on this bird.
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Old 11-25-2008, 09:02 PM
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You said gas? Which mean 26ccm or larger motor?
Then I wouldn`t rely on a 3A UBEC, because the servoes propably could surge more than 3A... causing a massive voltage drop, and loss of binding in the receiver. Which = crash.
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Old 11-25-2008, 11:29 PM
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Originally Posted by merctech View Post
Ive been thinking about the h9 hellcat. Trying to get a list of everything I need and already have to use on this bird.
For that h9 Hellcat 60 size you are going to want the Dimension Sport BEC and likely a 1800 or so pack.....

Mike
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Old 11-26-2008, 12:58 AM
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Well I found some receiver 6 volt 2400 nimh batteries. I think I might just go this route instead of trying to make what I got work.
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