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UAV_PILOT · 01-19-2010, 10:45 PM

Hey guys I am getting my new 450 sport this week and I am trying to decide which is gonna be the best tail servo to use on it. I have both the DS420 and DS520. I know the 520 has more torque but the 420 is just a tad bit faster. Can anyone help me out? I will be running 6 volts and I do hard sport flying, light 3D like flips, loops and a few tic tocs.

Wolfpackin · 01-19-2010, 10:49 PM

DS520

rcpower · 01-20-2010, 02:06 AM

May I recommend Futaba S9257? as this is align thread

UAV_PILOT · 01-20-2010, 06:15 AM

Quote:

Originally Posted by rcpower

May I recommend Futaba S9257? as this is align thread

Yeah but I have these two servos already and I am not going to use anything else.

UAV_PILOT · 01-20-2010, 06:17 AM

So why is the tail servo in a different location on the pro? On the sport it's on the tailboom. The pro uses the 520 and the sprot uses the 420.

rotodingo · 01-20-2010, 03:00 PM

The 420 is faster only on paper... Use the 520 if you can.

EmRen · 05-09-2010, 04:57 AM

Would the DS420 work with the Pro? Or is it too small to fit that new tail servo tray?

Rustynail · 05-09-2010, 11:15 AM

DS520

garyji · 05-10-2010, 08:51 AM

I've not had good luck with the DS420. Never tried a 520 and use 9257's.

G.

nashus2002 · 05-14-2010, 08:29 AM

I use 420 but ever with weighted tail grips the servo heat up and at the end of the pack i losse tail autority.
To much stress for the 420. i upgraded to 520, and rock solid when full collectif and hard piro. Go for the 520

Ganchillo · 05-14-2010, 03:00 PM

Always thought the DS520 was the same as the 9257 ore something like this. Nevertheless

+1 on the DS520

Spork01 · 05-14-2010, 03:19 PM

I wouldnt use either one. 9257 or mks ds8910 for the win.

snjbird · 05-14-2010, 05:57 PM

I have seen Bert rip it up with his totally stock sport super combo? So I think either will work... but If I had both in the spare electronic case, I would use the DS520, I have one on my beater 450 and it works great with the Align gyro...

JAG1 · 05-15-2010, 04:26 AM

ive got a DS520 on my 450 pro and 500,works great with a spartan quark!

Jerry.K · 05-15-2010, 08:10 PM

Take this test, remove the main blades then spin up the heli with the tail rod disconnected and try to move the rod by hand. You will install the larger servo.

teef_au · 05-16-2010, 05:09 AM

The 450 Sport comes with the tail weight mod built into the heli, therefore the DS420 is strong enough. My sport has 50+ flights on it now and never an issue with tail authority running the 420. If it was me, I would use the 420 on the Sport, it's what the super combo comes with anyway and I would save the 520 for a 500 size heli.

01-19-2010, 10:45 PM	#1 (permalink)
UAV_PILOT Registered Users Join Date: Jul 2008	Which tail servo to use Align DS420 or DS520? Hey guys I am getting my new 450 sport this week and I am trying to decide which is gonna be the best tail servo to use on it. I have both the DS420 and DS520. I know the 520 has more torque but the 420 is just a tad bit faster. Can anyone help me out? I will be running 6 volts and I do hard sport flying, light 3D like flips, loops and a few tic tocs. __________________ Blade 450 X

01-19-2010, 10:49 PM	#2 (permalink)
Wolfpackin HF Support My HF Map location Join Date: Nov 2007	DS520 __________________ Jonathan Livingston Helicopter Blade 400: E-flite 420H/35X ESC, AR6100e, HS65HB x 3, G401B/DS290G. (Ret.) CopterX 450AE V2: 430XL/35X ESC, AR6100, HS65HB x 3, LTG2100T/HSG-5084MG. T-Rex 550E V1 Classic Flybar: 600MX/BL70G, AR6200, DS610 x 3, Quark/DS650, 16t/520mm blades.

01-20-2010, 06:17 AM	#5 (permalink)
UAV_PILOT Registered Users Thread Starter Join Date: Jul 2008	So why is the tail servo in a different location on the pro? On the sport it's on the tailboom. The pro uses the 520 and the sprot uses the 420. __________________ Blade 450 X

05-10-2010, 08:51 AM	#9 (permalink)
garyji Registered Users Join Date: Nov 2009 Location: Western NC	I've not had good luck with the DS420. Never tried a 520 and use 9257's. G. __________________ T-450 Sport FBL, T-550 V1 FBL, Red Goblin 700. Goblin 500. 350 QX. Bunch of little Blades, and Planks. DX8 G-2, Retired Full scale Jet Plank Driver, U.S. Navy Ret.

05-14-2010, 08:29 AM	#10 (permalink)
nashus2002 Registered Users Join Date: Jan 2010	I use 420 but ever with weighted tail grips the servo heat up and at the end of the pack i losse tail autority. To much stress for the 420. i upgraded to 520, and rock solid when full collectif and hard piro. Go for the 520 __________________ TREX 450 SPORT 14T, scorpion-8/ICE50 GP750+DS520 DX8 TREX 500ESP spartan QUARK+DS650 IF AT FIRST YOU DON'T CRASH, TRY, TRY AGAIN.

01-20-2010, 02:06 AM	#3 (permalink)
rcpower Join Date: Jan 2010	May I recommend Futaba S9257? as this is align thread

01-20-2010, 03:00 PM	#6 (permalink)
rotodingo Registered Users Join Date: Jul 2006	The 420 is faster only on paper... Use the 520 if you can.

05-09-2010, 04:57 AM	#7 (permalink)
EmRen Registered Users Join Date: Feb 2010	Would the DS420 work with the Pro? Or is it too small to fit that new tail servo tray?

05-09-2010, 11:15 AM	#8 (permalink)
Rustynail Registered Users Join Date: Feb 2009	DS520

05-14-2010, 03:00 PM	#11 (permalink)
Ganchillo Registered Users Join Date: May 2009	Always thought the DS520 was the same as the 9257 ore something like this. Nevertheless +1 on the DS520

05-14-2010, 03:19 PM	#12 (permalink)
Spork01 Fear the Spork!! Join Date: Mar 2008	I wouldnt use either one. 9257 or mks ds8910 for the win. __________________ Trex 450L, OMP M2, Futaba 14SG

05-14-2010, 05:57 PM	#13 (permalink)
snjbird Registered Users My HF Map location Join Date: Feb 2008	I have seen Bert rip it up with his totally stock sport super combo? So I think either will work... but If I had both in the spare electronic case, I would use the DS520, I have one on my beater 450 and it works great with the Align gyro... __________________ No Plankers were injured in the making of this post! TOY BOX contents Mcp x, 450 Pro VBar, 500 VBar, 12S 600CF VBar... Mikado Logo 6003D VBar Proudly flying KBDD, MKS, Castle, Scorpion and some planks too

05-15-2010, 04:26 AM	#14 (permalink)
JAG1 Registered Users Join Date: Feb 2007	ive got a DS520 on my 450 pro and 500,works great with a spartan quark! __________________ Align 700L TOP Spartan Vortex VX1n Align 550DFC V3 Spartan Vortex VX1n (the dogs nuts!) Blade 180CFX Futaba 8FG

05-15-2010, 08:10 PM	#15 (permalink)
Jerry.K Registered Users My HF Map location Join Date: Feb 2008 Location: Houston Area	Take this test, remove the main blades then spin up the heli with the tail rod disconnected and try to move the rod by hand. You will install the larger servo.

05-16-2010, 05:09 AM	#16 (permalink)
teef_au Registered Users My HF Map location Join Date: May 2009	The 450 Sport comes with the tail weight mod built into the heli, therefore the DS420 is strong enough. My sport has 50+ flights on it now and never an issue with tail authority running the 420. If it was me, I would use the 420 on the Sport, it's what the super combo comes with anyway and I would save the 520 for a 500 size heli. __________________ *"It is said that the big thing on top is a rotor - it's not it's a cooling fan for the pilot. We know this is true because if it stops spinning you can actually watch the pilot sweat."*

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