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07-30-2007 05:33 AM  13 years ago
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enahs

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Rapid City, SD

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Servos
What servos are you all flying in your Pantera's? I am switching over from a Raptor and have been considering using Futaba 9252s or 9451s on my Pantera. I have heard that the 9252s are not the best servo for a CCPM heli, is this correct? Just looking to see what you all are using and what you recommend that I go with.

Thanks!
---------
Shane
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07-30-2007 05:49 AM  13 years ago
rsalazar

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Florida, USA

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I am using Futaba 9451 Digital Servo in my Pantera 50.

These are the spec

Control System: +Pulse Width Control 1520usec Neutral
Required Pulse: 3-5 Volt Peak to Peak Square Wave
Operating Voltage: 4.8-6.0 Volts
Operating Temperature Range: -20 to +60 Degree C
Operating Speed (4.8V): 0.13sec/60 degrees at no load
Operating Speed (6.0V): 0.10sec/60 degrees at no load
Stall Torque (4.8V): 97 oz/in. (7kg.cm)
Stall Torque (6.0V): 121 oz/in. (8.7kg.cm)
Operating Angle: 45 Deg. one side pulse traveling 400usec
360 Modifiable: Yes
Direction: Counter Clockwise/Pulse Traveling 1520-1900usec
Motor Type: Coreless Motor
Potentiometer Drive: Indirect Drive
Bearing Type: Dual Ball Bearings
Gear Type: All Metal Gears
Connector Wire Length: 12"
Dimensions: 1.6" x 0.8"x 1.5" (41 x 20 x 38mm)
Weight: 2.0oz. (56g)
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07-30-2007 08:03 AM  13 years ago
ARMSMASTER

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spokane, wa

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Take a look at the Hitec HS-6964HB or 6975HB. They are fast at 6.0v.Life is like a box of chochlates!
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07-30-2007 09:57 AM  13 years ago
bperry

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Detroit, where we eat the dead

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9351 on 6v here. They are supposedly more precise than 9451.

They feel very responsive and the heli responds to pitch changes very fast. I have also used 9252's on all of my previous nitro helis (Fury,Stratus,Raptor)I can tell a difference but as far as if it is worth it I don't know. All in all they are very similar with an edge going to the 9351.

On the down side they are heavier and use more power but it doesn't matter because I am running a 4800mah li-ion/reg system from Fromeco. I get about 7-10 flights per charge.
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07-30-2007 01:15 PM  13 years ago
SilverBullet

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Bentonville, AR USA

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I bought 9202's all around for mine. I also don't plan on 3D, so speed wasn't a real issue. I am also trying it on the throttle. Unfortunately, I am finishing the build, so can't speak to the performance yet, but I know they have been used for a long time on helis.
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07-30-2007 05:19 PM  13 years ago
The Dude II

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IN - USA

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Keep in mind that the correct servo for you may be different than another pilot.

Cost, Heli-size (read as in-flight torque loads placed on the control system) and your flight capabilities should all be considered.

My experience:

Been running 9252s for 2 seasons on 2 helis (total of 8 servos) and never had an issue or felt they were inadequate.

I originally used a 4-cell 3000 or 4200 mAh Nimh.

I run the Fromeco 2600 Li-Ion & Arizona at 6 volts now (past 40+ flights). The 9252s work extremely well for my 50 size (Pantera & Tiger...soon to a Pantera II).

On the bench, there's a noticeable improvement in response/speed as you ratchet up the voltage on the Arizona from 4.9 to 6 volts.

Now that being said, if you carefully study the Futaba Servo recommendations, the 9252 is not listed under use at 6Volts. My educated guess, without calling futaba, is that the plastic gear train in the 9252 may not be “as reliable” when operating under 6 volts and EXTREME TORQUE loading…i.e. you may be able to strip the gears.

I, like many before me, are running 9252s at 6 volts with no problems at current.

For the 3D performance monster pilot…that I aspire to be on day…

My Pantera II has 9155s installed but yet to be flown. My thoughts on the second ship were to employ a super strong servo at 6 volts (192oz/in) that was still reasonably fast (.13 @ 60 degrees).

A trend I noticed is that if the servo is extremely high torque, they will have a metal gear train (which has it’s pros & cons too…just like every other option/choice in life).

I’d like to see a manufacture list the calculated loads that would be placed on the swash plate servo links in a worst-case “real world” maneuver…then we could make a truly educated purchasing decision.
lotta ins, lotta outs
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07-30-2007 11:40 PM  13 years ago
enahs

rrKey Veteran

Rapid City, SD

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Thanks for all the replies. Basically, I just want a servo with decent torque/speed, centers well, and will be reliable. That's what I'm looking for.---------
Shane
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08-04-2007 08:15 PM  13 years ago
Eleven_Bravo

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Salisbury,NC

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9451's in my Pantera which I hope to complete and get in the air tomorrow for its maiden flight.

Hope my sick hyper 50 will hold out till I can put a 70 in there
ENGAGE!!
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08-09-2007 07:39 PM  13 years ago
billm

rrElite Veteran

Liberty Lake, WA

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I'm using in one of my Panteras Hitec HS-6964HB.
Super fast @6v!
.08 transit speed. Now thats quick! A bit spendy.
My name is Billm. Cough, and I'm a Heli Holic
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08-09-2007 08:42 PM  13 years ago
rsalazar

rrElite Veteran

Florida, USA

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Bill

What is the torque of those servos
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