Extreme Flight EXP Servo Thread (60" EXP's): Poll!!!

[Charlie Tilney]

Hitec HS5245MG's
7245MG's
BK mini cyclic servo
RJX FS-0391/0390HV's
JR 3711HV's
Airtronics 94761's
Futaba S9170SB SbuS2
Hitec HS225MG's
JR3421
Savox 1250HV

 

[Charlie Tilney]

Some options... :thumbup:

 

[Doc Austin]

I have not had a Laser yet, so I can't speak to that plane. Yet, that is.

However, I have flown the HS5245MG servos extremely hard in the 60 Edge and Extra and the MXS in both it's 60" and 64" configurations. I learned a few things about these servos, and servo set up in general, and my 5245MGs have served me rather well.

Like with any servo, there are a few things to watch out for. On the 5245MGs, you need to check the dead bands to assure good centering. You also need to use a high quality servo arm that fits tight on the output shaft and doesn't allow any slop. Also make sure your ESC (or separate BEC) is putting out 6 volts.

Finally, seal your hinge gaps.

I've done all of these things and my servos center well. I never experience any stalling or blowback. For the planes I have owned so far in the size range, the 5245MGs have been just fine.

I do plan to try the 7245MGs, but only when I have $300 to spend on servos. I've got three sets of 5245MGs and since they work so well I'm going to spend the money on something I need more.

 

[Feral]

Id go with the BK's i run them in my helis silly power for ya cash

 

[Charlie Tilney]

Thanks for the info Doc!!! If ou don't wanna spend as much for the 7245's, you can try the Savox 1250MG's on 7.4v (new version, HV). They are 10 bucks cheaper.

 

[Charlie Tilney]

Id go with the BK's i run them in my helis silly power for ya cash

Have you had any die on ya? I think they might not be that suitable on an airplane because they are heli servos. But silly fast!!!

 

[Feral]

No failures charlie they should be bulletproof in a plane helis are alot harder on servos.
If you run hv servos you could also run a castle talon 90 with the bec set at 8v

 

[Ohio AV8TOR]

I have been so happy with my 7245 servos in both the 60" Edge and 60" Laser. Fast and strong with no blowback what so ever.

 

[Charlie Tilney]

No failures charlie they should be bulletproof in a plane helis are alot harder on servos.
If you run hv servos you could also run a castle talon 90 with the bec set at 8v

Heli servos are meant for short bursts of resistance, not constant loads. With heli servos in a plane, (i.e. rollers,) they are more prone to burn out more quickly. I have learned this with the small 48"'s, but not 60"'s. I feel like I should give the BK servos a try. :banghead:

 

[Feral]

Thats not the case charlie heli servos are nearly constantly loaded to a degree when doing hurricanes all servos are nearly fully loaded