I just bought a Tower hobbies trainer 40 and I was wondering which servos I should use in it. It says to use standard servos, so which one without breaking the bank?</p>

http://www3.towerhobbies.com/cgi-bin...?&I=LXVW07&P=0

http://www3.towerhobbies.com/cgi-bin...?&I=LXDEL9&P=0

http://www3.towerhobbies.com/cgi-bin...?&I=LXPL94&P=0

http://www3.towerhobbies.com/cgi-bin...?&I=LXUK84&P=0

No need to go all out on servos for a trainer. Any of the ones above or something similar will work perfect and even do fine in your next airplane or two so long as they don't get damaged.

Hi,

If you haven't bought your radio yet the ones that come in the pack with any of the major brands are fine in a trainer or most 40 sized models. If you have a radio the suggest links are the way to go.

Cheers,

Colin

If you are using JR. I suggest a JR Sport ST47. What I like about the JR Sport series is the names of the servos. The "ST" stands for standard and the "47" stands for the 47oz of torque. You dont necessary have to get the BB (ball bearing) servos especially for trainers but they are nice.

What servos will your 2nd. and 3 rd. plane need ?<div>
</div><div>I am fling 2 trainers 1 cub and want a U Can Do. And I am stuck with 2 cheep 4 ch radios and 8 servos I can not use.</div>

Probably the same size standard servos your 1st plane used. I use futaba 3004 standard servos on all my 40-60 size planes and they work just fine.

ES Control. Make sure to read the front of the U-Can-Do manual thouroghly. My .46 UCD requires:

Ailerons: 2 Ball bearing servos with 50+oz of torque
Rudder: 1 High torque servo 90+ oz of torque
Elevator: 2 Ball bearing servos with 50+oz of torque
Throttle: 1 Standard servo

This servo set up will cost you about twice as much as the basic servo setup but is needed to prevent fluttering during manuvers.

The manual almost always tells you what size and type of servos to use at a minimum. ALWAYS read it as every plane is different.

I am flying a bunch of these [link=http://www.hobbypeople.net/gallery/440601.asp]servos[/link] I was using them in a Formula 3D. It is close to a U CAN DO 60. For the price I was amazed at how well they work. I have them in a YS .63 powered Giles, (2) 60 sized trainers, 70fs powered Cessna. I am running them at 6v without issue.


Dru.

Don't get too tied up with all the servo marketing stuff unless you are flying very large models in aerobatic competition. For up to 1.00 cu. ins. size models, you can well get by with standard servos in the 42 oz. ranges especially when you use one on each aileron.
Some years ago, when the big powerful servos were flooding the market with a couple more .OZ each few months, a well known giant scale modeler was released from his writing a giant scale column in a magazine not now on the market, simply because he addressed the folly of the advertised servo-craze created by those selling such servos. The mag. publisher rather have those advertisements than an honest column writer. [sm=greedy.gif]

The big boys get the super powerful stuff, then all the me-toos just have to have them. I have a lot of models, mostly semi-scale with one bipe at 101" wingspan. All my servos are analog with less than 75 oz. torque. OTOH I have a number of digital servos that have never been on an airplane, because they came with one specific radio and the me-toos sold them cheap because they "needed - must have" more powerful servos like XXXX uses. Such folly!

I don't care for digital as they mostly idle at about the same mah-draw that an anolog uses while working. Of course if you're into heavy large models doing 3D stuff, the strong digitals are the answer.

Like my grandson that has to have $150.00 sneakers that wear out in short time yet I wear $15 Walmart specials that last for months.

And when your grandson has to start paying for his sneakers out of his own pocket, he'll probably want to start shopping at wal-mart with you!

Those "Cirrus" servos have the same label design and packaging look as the Hextronic servos.

The Hextronics can be had for as little as 9.00/ea for a 140 oz/in servo or slightly more for a higher power digital.

Some have complained that there is a bit of centering issues with them ( translation: Not for FAI planes ) but for most sports flyers they do well.

I've used them by the hundreds with only one bad servo so far. ( sound of knocking on wood heard in the background... ).

I too was looking at the labels opjose, I too think they are the same servos.

About the only thing I use the digi's for is my helicopters. Only because they do center a little bit better. Other then that, I have not gotten into the 1000 oz torque, 2048 digi, quad bearing, unabtainium geared servos. Some think they need them, that's OK too.

For the average guy out there with a sport plane, the Cirrus or the standard Airtronics 94102, Futaba, or JR servo is fine. I flew 60 sized planes with a single aileron servo for many years, now they say I need (2) 100oz digi for the same plane.


Dru.

i suggest the plastic gear servo, it can reduce the weight of the airplane. Futaba is a good brand for rc model, it have a good performance on different situation. Futaba S9001 servo is a low price servo. i think this is more suitable beginner.



http://www.rcecho.com/futaba-s9001-c...ard-servo.html

Hmmm... $33.00 for a 68 oz/in standard servo?

I'll stick with the Cirrus or Hextronics 144+ oz/in @ 9.00 ( or less ) each.

Even the standard $12.00/ea 40oz/in Futaba's are better suited to a beginner... and the .40 plane the original poster asked about only needs 40oz/in at most.

Thanks for all the replies. I think that you have me headed in the right direction now.
Thanks again