Trick Question: Servos - What is faster - Speed or Torque?

[Rockohaulic]

I just read an article about Danny Szabo's setup on his Trex600. He prefers the Futaba S9351 over S9451 because the S9351's are "quicker in the air".

Here's the catch: The S9351s are a slower servo, but with more torque. Here are the specs:

S9351: 152 oz-in & 0.16 sec (4.8V)
S9451: 111 oz-in & 0.13 sec (4.8V)

So this begs the question: How much torque do we need for our 50's??

I mean, I'm currently using the popular S9252 on collective, but it's ONLY rated at 92 oz-in. Is this not enough?

And in a CCPM system, 3 sevos are doing the work together, so there is 3 times as much torque available. So for my Hurrican, there will be 3 times as much torque available as on my Raptor.

Bottom line: I am looking at using Hitec Servos for cyclic and collective. The 2 I am looking at are as follows:

HS-6965HB: 92 oz-in & 0.10 sec
HS-6985HB: 144 oz-in & 0.16 sec

So how much torque do I need? Do I go for the faster servo, or do I need the higher torque servo to be quicker in the air??

Rockohaulic

[Foxden]

Danny is most likely running his at 6v which gives his 120oz at .13

I'm running 9252's and we noticed a considerable difference when I installed the Arizona Reg on 6v to the CCPM and 5.1 to the 611, however Futaba doesn't give you the specs when running them on 6v or at least I haven't run across them. Ron Lund has them for a very reasonible price, especially if you have a large fleet like Steven and I do, you want a good servo that won't break the bank.

Just my opinion

[chase]

Foxden I am sure you know but futaba recomends not running 9252's on 6v. That is why the do bnot have specs for running them on 6v. Again I am sure you know this becouse you are running a reg with them. :mrgreen:

[Rockohaulic]

Actually, if Danny is running them at 6V, then he is getting 192 oz-in out of his S9351s.

Isn't that insane for a 50??? :shock:

Holy cow - that's 100 oz-inches more than our S9252s at 4.8V!!

[helibrite]

So :? , thats how his reactions are so much faster??????? :noteworthy

[chase]

So in other words I should of gotten 9251's????

[helibrite]

Chase,
What ever servos you install they'll look good in your Hurrican 007. :woohoo
Rusty