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Digital Servos

Old 04-08-2011, 02:10 PM
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Big Johnny
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Default Digital Servos

Ok fellas and Chellie


I'm have a Hanger 9 100" Cub, the fabric covered one. The Manual say's use JR 531 servos or equavilent. I want to use digital servos or super good analog servo. I don't want to break the bank using $200.00 apiece servos. Do ya'll think these might do the trick.


Hitec HS805MG Analog
HS5645MG Digital
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Old 04-08-2011, 03:13 PM
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constantCrash
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JR 531's are good servos why not use them? they are only $40.00 each
http://www.servodatabase.com/servo/jr/531

It's a cub, do you really need ultra fast ultra strong servos?

the HS805MG has 5 times as much torque as the JR's
and are significantly bigger. so I wouldn't use that one as it would require structure modification.
http://www.servodatabase.com/servo/hitec/hs-805mg

the HS5645 is about the right size and $20.00 more each.
http://www.servodatabase.com/servo/hitec/hs-5645mg

I'd use the JR's but if you want digitial the HS5645's should work.
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Old 04-08-2011, 05:00 PM
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texasclouds
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i'm not going to respond until you post pics of that 100" Cub
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Old 04-08-2011, 05:18 PM
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Old Fart
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I had that same Cub. Don't consider anything for the tail servos that doesn't have metal gears....
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Old 04-08-2011, 06:32 PM
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Larry3215
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Yup, metal gears are good for the rudder for sure.

On that model Id recommend going with double what the mfg recommends for torque. The plane will fly better with controls that respond well.

Id recommend using the Hyperion digitals. The price is excellent - close to the analogue price of Hytecs - and the quality is excellent. Plus, they are programmable with a cheep programmer if you ever need that.

One of the DS-16's would probably be fine or the DS-20's if they would fit.

They have several combinations of speed, torque and metal gears. Like CC said, you shouldnt use the ultra fast ones like the the ones with a 'G' in the suffix ie GMD.

Id consider the DS-16 FMD or the DS-20 TMD

http://www.allerc.com/servos-hyperion-c-40_259.html
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Old 04-08-2011, 06:36 PM
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kyleservicetech
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Originally Posted by Big Johnny View Post
Ok fellas and Chellie


I'm have a Hanger 9 100" Cub, the fabric covered one. The Manual say's use JR 531 servos or equavilent. I want to use digital servos or super good analog servo. I don't want to break the bank using $200.00 apiece servos. Do ya'll think these might do the trick.


Hitec HS805MG Analog
HS5645MG Digital
And if you use metal geared servos, be sure to put removeable locktite in the servo arm screws
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Old 04-08-2011, 09:43 PM
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Old Fart
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If I were to have another 1/4 scale Cub, I'd run the same servos I'm running in my warbirds that size - non digital HS645MG's
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Old 04-08-2011, 10:31 PM
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kyleservicetech
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Originally Posted by Old Fart View Post
If I were to have another 1/4 scale Cub, I'd run the same servos I'm running in my warbirds that size - non digital HS645MG's
That's what I've got in my 17 pound Extra 330 with 2600 watt power. Four '645MG's in the ailerons, two 645MG's for the elevator, and one digital 5625 in the rudder.

So far, so good.
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Old 04-08-2011, 10:39 PM
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Old Fart
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Unless money is no object (and in that case - send it to ME), never really saw the need to go digital unless it's a 3D bird - and you're skillful enough to notice the difference.

I have 645MG's on my 25% Ultimate - buddy of mine has (at least) 4X the $$ in digitals on his otherwise identical Ultimate. I can't tell the difference (but he can)
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Old 04-09-2011, 02:50 AM
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Larry3215
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In this case, you can get the Hyperion digitals for about the same price as the Hitec analog servos - so why not go for the better option?

Same price, more torque, better centering, better "feel", more positive control.

You dont have to spend any more money and you will look like a better pilot.

Not only that, but digitals on large birds will help you become a better pilot because the plane flys better under more solid control.
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