freddysatellite

Hi All,

I have a V1 T-Rex450se with hitec hs65's on the cyclic and it's fine. I do notice that returning EXACTALLY to center does not always happen.
Now I mean a fraction - the servos are fine and working normally..

I was wondering if a digital servo would be slightly better ?

What servos are better than the hs65's ? and are they worth any price difference..

I have just purchased a V2 and wondering if I should simply get the hitec's again for this heli or something better ?

cheers..

RussWisc

when you ask 10 ppl the best you will get 10 servos LOL ...... I use 3x Jr285s added MG gears now you can buy the 285mg ... and Ds3400g on tail .... I am very happy with the setup

BarracudaHockey

My Feedback: (11)

Having flown several servos during the trex and mini titan testing I'd say go with the hs65mg or the jr digitals with metal gears. Though there's not a great difference flying the 285s and the hs56hbs

rlsloan

The HS 65's are fine. If you ever build another machine, the HS56MG would be slightly better.

rcmiket

HS65MG's great servo.

TheBum

You'd be equally well served with either the HS65MG or DS285MG, although the DS285s will tend to be more precise since they're digital. On the other hand, the DS285s also suck more power, so if the BEC you're using is marginal for the amount current it's driving, the HS65s might be a better choice.

freddysatellite

Thanks everyone for that - was headed the HS65mg's way but just wanted to see what was better out there..
The extra power drain by the digital on the std bec might be also a deciding factor..

Maxime

If I ever unexpectedly find unexpected money somewhere, then I'd give these a try:


http://www.hitecrcd.com/servos/show?name=HS-5065MG



But I'd definitely consider using a dedicated BEC

lookyj

great thread...

I have a TREX 450S with Hitec HS-65HB (x3), Futaba 401 and S9650 on the tail, and a TREX450 SE with HS-65MG (x3), Futaba 40 and S9650 on the tail. I am very happy with both Helis!

I am currently building a TREX 450SA with JR DS285 (x3), JR G500T and DS3400G on the tail. During testing I noticed the DS285's have a lot of chatter. Is this normal? Neither of my HS-65's don't make noise unless input is given.

I also found some specs that state the DS285's are much slower and less torque then the HS-65's, is this noticeable in flying?

here's the stats I found on this forum:



Radio Guide: Servo Comparison


JR DS285
Rating: Not Rated
Class: Micro
Digital: Yes
Bearings: Bushing
Gears: Nylon

General Specs:
- 0.18 sec @ 6.0v
- 16.90 oz/in @ 4.8v
- 16.90 oz/in @ 6.0v
- 0.87 x 0.45 x 0.85 inches
- 0.32 ounces
- 4.8v

Applications:
- 1/2A Aircraft
- 2M Sailplanes
- All Purpose
- Electric Helicopters
- Micro
- Park Flyers
- Small Electric

Street Price:
$34.99



E-Flite S75
Rating: 2 / 5
Class: Sub Micro
Digital: No
Bearings: None
Gears: Nylon

General Specs:
- 0.12 sec @ 4.8v
- 17.20 oz/in @ 4.8v
- 0.90 x 0.45 x 0.94 inches
- 0.26 ounces
- 4.8v

Applications:
- All Purpose
- Electric Helicopters
- Park Flyers
- Slow Flyers
- Small Aircraft
- Small Electric

Street Price:
$13.99


Hitec HS-65HB
Rating: 4 / 5
Class: Micro
Digital: No
Bearings: Single BB
Gears: Karbonite

General Specs:
- 0.14 sec @ 4.8v
- 0.11 sec @ 6.0v
- 25.00 oz/in @ 4.8v
- 31.00 oz/in @ 6.0v
- 0.90 x 0.50 x 0.90 inches
- 0.39 ounces
- 4.8v or 6.0v

Applications:
- 1/2A Aircraft
- 15-sized Helicopter
- 2M Sailplanes
- All Purpose
- All Terrain
- Electric Aircraft
- Electric Helicopters
- Micro
- Park Flyers
- Small Aircraft
- Small Electric
- Small Sailplanes

Street Price:
$29.89

Maxime

The JR DS285 are digital, so they are always trying to center themselves. That's the "buzzing" noise you are refering to. Don't worry, this is perfectly normal.


I didn't know they were THAT slow! Unless you are into aerobatic they should be fine, but I don't think they are strong or fast enough for 3D.



My friend and I both do helo setups for the LHS, and we've never had luck with the DS285. Some of them burned rather quickly. (Maybe just a bad batch???). I just changed my 9650 servo for a 3400g, and I prefer the 3400g, tail is more solid. One local guy who flys hard 3D says he prefer the 3400g.

RussWisc

Jr DS285

Torque: 17 oz/in @ 4.8V, 19 oz/in @ 6V
Speed: .18 sec/60 degrees @ 4.8V, .14 sec/60 degrees @ 6V

Druss

I have DS285's on my 450XL but that's a scale project so I don't need the quick response or higher torque. my 450SE has the 65hbs (waiting for the gears to go cause I got a great deal on some metal gears for them).

lookyj

question, if digital servos are constantly trying to center, creating the chatter like the JR DS285's.... why doesn't either of my Futaba S9650's, or the DS3400G (all of which are digital) create the buzzing noise?

can't wait to get this heli built so I can first hand see the difference in tail set ups.

Kenny4842

I am glad I read that. The TREX I just got has the DS285s on the cyclic controls. These are the first JR servos I have ever seen. I have always used futaba and I thought something was seriously wrong with them. These are also the first digital servos I have used, it seems like there is a lot of chatter, you would think they would just go to center and "shut up"

Maxime

Good question. I guess each servo model has its own characteristics. My JR9000T and Hitec HS-5965MG (in a Losi 8T rc car) both chatter a lot. My 9254 in my Raptor 50 is also quite noisy. It's true that both the 9650 and 3400g are rather quiet....