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Hitec 5945 vs 8611 difference ?

Old 03-12-2004, 08:07 PM
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RTK
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Default Hitec 5945 vs 8611 difference ?

Before I go out and buy 10 new servos, I would like any input on the durability and advantages between the 8611 and 59xx's. I have not owned either of these but have heard some negatives on the old 8411's. Have the problems with the 8411's been addressed in the 8611? Do the Hitec's 59xx have a track record?
Thanx-RALPH
Old 03-13-2004, 01:37 PM
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Default RE: Hitec 5945 vs 8611 difference ?

Someone must have input?
Old 03-13-2004, 01:52 PM
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mr_matt
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Default RE: Hitec 5945 vs 8611 difference ?

I have used probably 2 dozen 8411s. The only negative I have seen is gear slop (in an aircraft application, helis is a different matter). I have since changed the gears in many of my 8411's to the "SA" gearset, all nylon. Or you can pack the metal gears with vaselive to help with any slop. Otherwise I think the 8411 sets the standard for hi torque digitals. Myself and many others trust 10K and up turbine powered models to them all of the time.

As for 8611's I have a sackful to put in a BVM Super Bandit (with a big turbine) but I have not run them yet. From what I have seen and heard from knowledgeable people I trust 100% (in Jets) these are the new standard in premium servos.

As for Hitecs, I leave that to someone else, I have not used a Hitec in years
Old 03-13-2004, 01:55 PM
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tommy s
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Default RE: Hitec 5945 vs 8611 difference ?

The problem with the 8411's is slack and slop developing in the drive gears
but this is going to happen with any metal gears servo. The pattern fliers change
the gears in the 8411s to nylon so they will stay tight although they are not as strong
as the metal gears. I haven't seen the new Hi-Tec servos with the Karbonite gears
but if you can believe the advertising they are said to be as strong as metal but
will wear like the nylon gears.

tommy s
Old 03-13-2004, 02:56 PM
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Geistware
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Default RE: Hitec 5945 vs 8611 difference ?

Why not do like futaba and make the middle gear nylon and leave the rest metal. That way you only wear the nylon gear since it is softer. Has anyone done this?
Old 03-13-2004, 03:44 PM
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RTK
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Default RE: Hitec 5945 vs 8611 difference ?

What about all the hype about the programmer. They say you can reduce the deadband. I would think that the deadband would be set at minimum anyway. More is not better. How is the deadband on the 8611? Worse?Better? I have no preference to any manufacture of servo. Mainly used Futaba in the past with good luck. I just don't know enough about new servo technology and which is dependable and best. I would hate to spend that kinda money on digitals and be disatisfied.
Old 03-14-2004, 12:58 AM
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Default RE: Hitec 5945 vs 8611 difference ?

8611 puts out gobs of torque and the 5945 is fast. I'm putting 5945s all the way around on my H9CAP.
Old 03-15-2004, 03:49 PM
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Default RE: Hitec 5945 vs 8611 difference ?

Has anyone been using the 8611's? Just like to know how long before any slop sets-in.
Old 03-15-2004, 07:44 PM
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Shortman
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Default RE: Hitec 5945 vs 8611 difference ?

Check the Giant Scale forum, JohnVH and Jon Leyland have been using them for awhile now and they switched there 33% H9 Cap and 35% Radiocraft to 1 servo per surface, 1 on each aileron and 1 on the rudder. The planes developed no slope after 27 flights on the h9 cap and they say they are working perfectly, slop free.
Old 03-17-2004, 11:53 AM
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Default RE: Hitec 5945 vs 8611 difference ?

Well it looks like I am going to try the 8611 and use 1 per suface. This will be something new on a comp-arf 2.6 extra. If it doen't work out I can always use more. Just wondering if anyone has tried this? Might be foolish, but it saves alot of trouble in matchboxes etc. Always looking for less failure points, and less hassles.
Old 03-17-2004, 03:30 PM
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hilleyja
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Default RE: Hitec 5945 vs 8611 difference ?

My $.02!!!

I would want more than one servo on a 33%-40% 3D airplane control surface. Not just because I need the extra torgue the multiple servos provide but because I want to distribute the control contact points on the surface. After-all, a 40% Carden's airlon is made up of the same material the much small airplane is made of. You put one very-high torque servo on that airlon you have a single-point of failure and a lot of dynamics on one control horn surface. The larger airplane, by virtue of it size has a greater potential of the control surface flexing during a high-dynamic maneuver. If you take 2 smaller servos and spread their connections along the airlon you maximize the use of the torgue of your servos and reduce the dynamics on the individual control horn surface; you reduce the potential of the control surface flexing during a high-dynamic maneuver.

Given a choice between (1) JR 8611, 200+ozs of torgue and (2) Hitec HS-5925 , 130oz of torgue, I would choose the 2 servos. If all I had available was (2) JR 8611s I would use them both, even though 400+ozs of torgue maybe way over-kill.

Again, just my $.02.
Old 03-18-2004, 12:13 AM
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Default RE: Hitec 5945 vs 8611 difference ?

WAY overkill
Old 03-18-2004, 12:42 AM
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Default RE: Hitec 5945 vs 8611 difference ?

Its funny, the trends are starting to reverse now. The older T.O.C. pilots use to only have 1-2 servo (im guessing) per aileron on their planes, then the newer generation now get up to like 4 per aileron and 6 on the rudder. Now people are going back to 1-2 servos per surface[8D].

Its been tested out though and the servos hold up fine from what we have seen. 1 JR 8611 on a 35% Radiocraft (the plane was MADE FOR ONLY ONE anyways) this is an older kit, but you see back then they didnt think 2 was ever needed.
Old 03-18-2004, 12:52 AM
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Default RE: Hitec 5945 vs 8611 difference ?

ORIGINAL: 3DFanatic

WAY overkill
Believe it or not, if you were take the same GS Aerobatic model with two servos and then with a single servo on the ailerons and flew them both, you'd think otherwise. Been here done it!

The aileron response is greatly enhanced, crisper-faster response and over rotation in snaps is less prevalent. Overall you feel a huge difference IMO...
Old 03-18-2004, 02:18 PM
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Default RE: Hitec 5945 vs 8611 difference ?

That's probably not due to torque though. It's probably the surface flexing so you get less true deflection. I dunno, I could be wrong. Depends on which servo you were using too. If it was only putting outl ike 130oz-in sure, it's gonna be lousy.
Old 03-19-2004, 08:05 PM
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Default RE: Hitec 5945 vs 8611 difference ?

ORIGINAL: hilleyja


Given a choice between (1) JR 8611, 200+ozs of torgue and (2) Hitec HS-5925 , 130oz of torgue, I would choose the 2 servos. If all I had available was (2) JR 8611s I would use them both, even though 400+ozs of torgue maybe way over-kill.

Again, just my $.02.
I beleive the original comparison was with the JR 8611 and the Hitec 5945, not the 5925. The 5945 have a lot more torque then the 5925's

Roger
Old 03-20-2004, 06:43 PM
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hilleyja
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Default RE: Hitec 5945 vs 8611 difference ?

Yeah, but the point I was making was those (2) servos are a better fit for the application than a single 8611. BTW, The 5945 has more torgue but, the 5925 has more speed. They are the same servo with different gear ratios.
Old 03-20-2004, 11:38 PM
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Default RE: Hitec 5945 vs 8611 difference ?

5945 is in the neighborhood of 180oz-in.

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