Tri-stan

My Feedback: (1)

Just wanted to open a thread concerning any issues people have experienced with these new servos. I have well over 150 flights total on two 8-servo sets, one of 5995s, one 5955's, with NO issues or problems noted thus far. I used the HiTec programmer with Ver. 1.02 software to program them, and although the 5955's (robotics servos) required a double reset to get them to reset properly, they have worked properly in every other respect since installation. The 5995's were as straightforward as any 5945 or other HiTec digital I have ever re-programmed.

For power in the planes I'm using the Fromeco Ultra ReliaRegulator switches set to 6.1 volts, and dual 4800 ma Relion Li-Ion packs. No issues, glitches, twitches, or other problems noted at all.

Just wanted to address this because occasionally the question is raised as to whether they are safe to use. So far, I'd give them a resounding two thumbs up.

All commetns welcome.

figueroa

My Feedback: (22)

Thanks Kris,
I have five HS 995 which I am using in my 40% Lanier Edge 540T. I had some concern about using them. I had heard that there were problems with programming. I was going to send them back and get the HS 5955s. I just finished my Edge today and was still a little hesitant about using the HS 5995. I know the HS5995s have more throw than I need but I can set the end point with my radio. I appreciate your input, I feel a lot better about using the HS 5995.
Thanks again.
jef

Tri-stan

My Feedback: (1)

The current programmer will re-=program those end poitns for you Figuero, so that you don't have to dial things down on your transmitter. Merely reset the servo. It usually takes two tries. . then reset your center and endpoints and other parameters, just like every other HiTec servo.

Richard D Bahmann aka/Wrongway

My Feedback: (42)

Hey all. I bought one around the holidays (5995) to be used in the 50CC Extreme Flight Yak on the rudder. In another thread they talk of somone having an accident with the servo glitching during flight.
My questions are, what Transmitter Brand/model are you using, and must I buy a reprogrammer to use this servo with peace of mind? I wonder if voltage had anything to do with it as the instruction sheet that comes with the servo says not to operate below 4.8 volts. Could a large current draw affect servo operation. It seems that someone running on a 4.8 volt system drawing lots of current might draw it down for a possible glitch? I hate to lose a 2K aircraft with any possible bad combination. Have not picked out a battery system as yet.

ashkanani

HI all..
am palnning of using 4 Hitec 5995 on my Elev. and 3 same in my Rudder of the 3W YAK-54 and heard before few days that thier might be some problems that not keeping there End-Points... on the other hand I did tried it as a single in my DV rudder and still working great..so what do you think.... shall I go a head with..??

mrbigg

My Feedback: (21)

why not? it's only money!

DMcQuinn

My Feedback: (13)

My experience is limited, but has been positive so far. I am using one 5955 servo for the rudder on my 35% Carden cap. This one servo (at 5-cell unregulated voltage - say from 6 to 7 volts) provides enough to satisfy my 3d needs, knife edge, etc. I do not own a programmer, so set up the neutral and end-points via the transmitter - basically 125% throw both ways in order to get 45 degress deflection in high rates.

ashkanani

Thanks for the replies... but this wasn't what I was looking for... my concern is CAN I Gather more than one servo of the 5995 or 5955 in one action..(Ail. or Elev. or Rudder)

Abraham

famousdave

My Feedback: (61)

PM Mglavin - there are some issues with the programmer and ganging servos at the moment. You can also do a thread search or search under his name.

The servos are on allocation and nearly impossible to get right now.. and the fix for the programmer is being worked on. I am very confused by the first post, as resetting a 5955 servo with software version 1.04 puts it into an erratic mode. I have never seen 1.02 software... ever and I have been using Hitecs for a long time.



DP

mglavin

My Feedback: (31)

The only problem with ganging multiple servos is when utilizing Futaba PCM and a single RX channel source. There is a compatibility issue. If your going to use Futaba PCM a wye, extension, Powerbox or servo interface that will isolate, boost or amplify the control signal will work around the known problem.

Hitec will have an update in the near futre that will alleviate the compatibility issue with Futaba PCM.

hilleyja

My Feedback: (3)

This was the version on the Hitec programmer when it 1st came out. Most of us have since returned it to Hitec for a firmware upgrade to v1.03.

ashkanani

Am using the programmer with software V 1.03... and i think it's the latest..... also am gothering those servo's through-out the EMCOTEC DPSI LDO..... but does anyone know when the new software will be out... hopefully it'll takw care of the problem....

Thanks
Abraham

3D Joy

Michael unofficially (I think) annouced it to be about 2 weeks from now.

ashkanani

Great to hear that... worth to wait.

Thanx
Abraham

kelly vallee

I have a friend that lost his plane last night to a hs5995 on the rudder, he was making a left turn and the rudder jammed 90 degrees and the plane went staight down.

mglavin

My Feedback: (31)

Sorry to hear your friend lost a plane. Unfortunately these problems are generally relative to the installation, low voltage, depleted batteries or inadequate power distribution, extensions and wyes with poor quality connectors and in some cases improper mechanical set-ups and or binding of the control link hardware or surface at end-points. Not to say that the servo may not have failed BUT to date this is not a problem, specifically with the 5955TG's... They have proven to be incredibly reliable with nary a component failure to the best of my knowledge.

Would you provide some additional information on the after crash analysis? How many flights prior to the crash the day of the mishap? Was the battery load tested? Does the rudder servo work NOW? How was the model rigged, battery size and type, servo count, wire sizes and such?

Ninety degree rudder throw is extreme, typical throw is 45 degree MAX. I almost lost a 40% Carden Edge several years ago with MAX rudder deflection when one of the four 8411's installed locked up. It was a chore to bring it down with full cross aileron, took several attempts to make the runway as the model was crabbing severely.

kelly vallee

My friend only had seven flights with this setup and servo, batteries where tested. And the battery lipo 2300mah on 7.4 volts with the large voltage regulator from MPI, with all twisted 22 gauge extention on the plane, but the rubber was plud direct in the receiver ( PCM Futaba ). The plane has a total of seven servo hitec, after the crash the rubber servo would work fine until the radio was turn on, and then the rubber would go to the left to the maximun travel possible. The plane was a 27% extra 300l colombo design with a ZDZ 40 with a weight of 14.7lbs total.

mglavin

My Feedback: (31)

Kelley

Where all the servos digitals? A Li-poly battery or a Li-Ion? Seven flights on this battery charge? How was the battery tested and when?

I assume your suggesting you can rotate the servo without benefit of the radio or power and when you power it up it now rotates to end-point?

kelly vallee

All the servo are hitec digital, the batterries are Li-ion and the batteries where tested a 1 amp with a Duralites barrety tester. And when the power is not on you can move it left and right, then with the power with control of the radio the servo is centered and will hold its position.

mglavin

My Feedback: (31)

So the servo appears to work OK, right?

Again seven flights on one charge?

Was the load test performed before the last flight?

I recommend load testing at 1.5A minimum. Digitals are power hungry; seven have the ability to pull 14-21A momentarily and or stalled. A single Li-Ion flight pack of the size range you noted is pushing it IMO. Are you sure its a 2300mAh Battery, never heard of Li-Ion this size?

3D Joy

Hi,

I have personally flown this particular plane for 2 flights to test capabilities of the plane.

From memory, the equipment is as follows:

2x 5945 for ailerons, 1x 5955 for rudder (way overkill) and 2x 5625 for elevators. There is also a 52?? for throttle and something for the choke hence the total 7 servos but only 5 of them are actually working.

Batteries are Fromeco (I think) lithium packs. 2 packs in parallel with MPI regulators.

Everything is setup with 3D in mind and there is no binding that I noticed during the preflight we made. The plane was flown hard (for the electrical components) during the 2 flights I made, rolling harriers and walls, etc... I strongly suspect that my friend did not try to push the limits during his following flights. --->> Everything held up fine during my flights so that should be fine for the following ones.


There is no way his setup can consume 20A, it would make for 4 amps per sorvo...

mglavin

My Feedback: (31)

2A for 5945-5625’s and 3A for the 5955. But this is momentary not sustained current draw and you’re not likely to stall the servos. Average current consumption with this set-up is typically around 15mA or 1.5A with peaks around 8-10 Amps... Two Fromeco 2400mAh packs in parallel are fine, the description garnered sounded like a single battery was used. Are there two regulators, two switches?

If the servo is fine NOW, the most likely cause of a full deflection lock is power falling below minimum requirements. This is the only known cause for this behavior to the best of my knowledge. Were the batteries freshly charged prior to this fatal outing? Were they load tested prior to the last flight? It’s hard to know for sure without benefit of experience and or an amp meter if binding exists of a control set-up IMO. I’ve seen many cases were end-points were improperly set causing high current draw scenarios too.

I’d suggest returning al the servos to Hitec for post crash inspection and or service. Specifically describe the suspected problem with 5955. It’s also possible the M/P output gear is damaged unbeknownst to the owner. This has been known to cause similar behavior.

kelly vallee

The plane had a total of seven flight on it, but the batteries only had three flights on them since the last charged. And before the fatal crash they were tested at 1 amp and tested at 7.5 volts. And YES the battery is a 2300 mah li-ion pack, which was fully charged before the three last flights before the CRASH.

mglavin

My Feedback: (31)

Who offers a 2300mAh Li-Ion battery?

To clarify there are two batteries for the flight system? Two switches and two regulators?

Kougar IV

That is my plane
I lost my plane to a hs5955TG on the rudder, i was making a left turn and the rudder jammed 45 degrees and the plane went staight down.

The plane are seven flights total with this setup and servo. Last week after tree flights, batteries where tested 7.4 volts. And the battery li-ion 2 X 2350mah on 7.4 volts with the large voltage regulator from MPI, with all twisted 22 gauge extention on the plane, but the rubber was plud direct in the receiver ( PCM Futaba ).

The plane has a total of seven servo hitec digital after the crash the rubber servo dont work. The radio was turn on, and then the rubber would go to the left to the maximun travel possible.
The plane was a 27% extra 300l colombo design with a ZDZ 40 with a weight of 14.7lbs total.

The batterries are Li-ion and the batteries where tested a 1 amp with a Duralites barrety tester.