Hi
I am hoping someone can help me here, i am sure this question has been asked before but I am D"""N if i can find the thread. If you are equipping a plane on a budget on which surface should you spend the money to put the super dooper servo and where should you spend the least. This is for a YS 63 equipped plane.

Mike

I guess it depends on what your definition of "budget" is. Personally, I like the S3050's, about $44.99 (that's about 2 Pounds these days, I think). If you run them on 6V, you get 90oz. of torque and they are digital to boot.

Hi Klhoard
I know about those servos and I have some what I was asking is on what control surface to spend the money on getting a really good accurate fast/powerful servo and where it is less important.

Mike

You might also consider the 3152. Looks similar to the 3050, but has nylon gears, slightly less torque spec.- 87oz, and less $. I have run these on a smaller plane on 6v for ailerons, elevator. If weight is not a concern, the 3151 or 3152 can make a good throttle servo as well. You may want a bit more torque on the rudder though, depending on your flying (F pattern?).

My opinion of the most critical surface would be the elevator....for obvious reasons...but also because servo centering and holding at center is key to smooth exits from end box manuevers.


good luck,
mark

Hi
As it is a 70 sized plane ( Zeque 70 to be exact) i would have thought the S3050 would be more than sufficient torque for the rudder or should i be looking for more?

Mike

I use JR 821 on My 90 size pattern ship. For 30$ you get:
Typeigital
Torque:72 oz/in @ 4.8v, 88 oz/in @6v
Speed:.19 sec/60° @ 4.8v, .15 sec/60° @ 6v

BTW you can get them from the unmentionable auction site for as low as 25$ shipped to UK when you buy 4. Can't beat that!

If I have to rate the budget I'd spend by surfaces then I'd say:
1 elevator
2 aileron
3 rudder
4 throttle

Mike,

Ailerons - especially if the plane uses 2 aileron servos. Any servo will have some amount of play in the geartrain, and some amount of blowback (which is all but eliminated with a good digital servo). Aileron servos are working the hardest during high G pulls / pushes, and if they are not maintaining center equally, it will be very difficult to get the plane to loop track properly. I agree with the 821 recommendation for this application.

Regards,

Dave L
Team JR

I will say, Elevator, Rudder then ailerons, in that order, in a small airplane like that you can use almost any type of servo, I use Jr to of the line in my 2x2 , but on my Sopt On 50 I use Hitec 5245, digitals, very very good servo ( you have to reprogram the center bandwith), if you have the servo programmer or know somebody that has one, I think that is the best option, If not, by the time you get the programmer you will be spending the same a mount of money as if you were to uy the expensive ones, I have the 821 also,but they are heavy for that application in my opinnion.

Best regards

Okelly is right - JR821 servos are currently the best value for money IMHO.
I have them in my Zen 90 running on 6.0 volts and at 0.15s they are fast enough for me (flying expert class F3A), not to mention the 88 oz. of torque.
But a lot of servos today can do that.
What distinguishes these low cost digitals from the rest is the gear train's quality!
The composite gear train shows no backlash or "play", not even after dozens of flights.
None of the servos I own (I also use Futaba and Hitec digitals) can pass that test!
One remark though - at more than 40 grams they are a bit heavy and I would rather use something lighter for a 70 size F3A model.
I have Hitec 5245MG which are excellent servos and weigh only 32 grams however with their metal gears they do start to develop "play" in their gear train.
As a general recommendation stick to nylon/composite gears in pattern models.
As for the order of importance regarding servo application, I do not have anything to add...
Finally, I would like to wish you good luck with your Zeque, it's one of the nicest pattern planes today - I wish we could have them in 110 size!

Cheers,

Danny

Yes Im running the DS821 in my Black Magic Vf3 on the alierons and its plenty of servo. you can find great deals on ebay and buy them for about 59.95 for four of them

Chris Odom
Team Black Magic
Team Dragon Fire

Futaba 9001 is pretty good choice. It is quite precise, good centering, relatively in-expensive ($29.99) and has a torque of 72oz-in @ 6v. The motor is coreless which is a big plus. I use two for ailerons on my Venus II (a 90 size pattern ship). The 9001s should be good enough on all control surfaces for your 45-60 size application.