RE: Hi-Tech servos?
 

HERE THE PROBLEM MUST BE THE USER AND NOT THE PRODUCT...- I`M SORRY TO SAY

RE: Hi-Tech servos?
 

How do you work that out? A user error would apply to all brands, I have never had a problem with Futaba or JR or Multiplex so how come it is my error if a Hitec goes wrong? If a servo fails on the bench within seconds, connected to 4.8V, what is the user error? Do you know why the 225 shredded its gearbox? I do. There were blobs of plastic flash from the moulding that covers the motor gear hanging down over the gear train and one of them got caught in the gears. Exactly how is that a user error? Please don't accuse people of being in error when you know nothing.

H

RE: Hi-Tech servos?
 

The same with me. I have the SM F 18 also. I was stuffing it with HITEC SERVOS :D when my friend told me to use what is recommended for this JET:eek::D. I hate changing what works for me all these years but is what SM recommend. I don't to hear man you should have use JR :D if something happen;)

I have been flying jets with (HITEC SERVOS) for 4 years now and this year will be the first time using JR 8611 servo and its because of (manufacturer recommendations). My XXL JET I call the tank :D because of the weight 40#wet . We first start out using JR 8411 keep stripping the gears. Change with four Hitec 645 ok. Hotspot, MB339, Starfire2, all hitec 645.

RE: Hi-Tech servos?
 

I've heard the problem can be with the pots going on them, this can also be caused from running them on 5 cells, when rx packs are fresh they can peak at over 8v, so causing the pots to burn out. I know hitec don't recommend people using them over 5 cells too.

RE: Hi-Tech servos?
 

manufacturer recommendations ??? Manufacturer should say ' put 120oz min of torque' or something like that. I dont let any manufacturer decide for me what i can or cant put in my models. I'm not a newbe...

I use Hitech and Jr for long time with any problem at all. But when i see people with match box in their plane, i always ask myself why Jr dont make programable servos with a programing unit...It's probably for the $$$....

In the Big gazer plane their is alot of Hitech user, Hitech is probably the most used servos in 30%+ plane. Here in the jet comunnity, alot of people are elitist, and if oncle bob said 'put Jr in your plane' or 'put kevlar tank in your plane' the little sheep follow the leader...

RE: Hi-Tech servos?
 

The responses on this one should be quite interesting.

RE: Hi-Tech servos?
 

Well, he does have a point there...
I have just ordered my first 4 HiTec digitals for flight control, all 5125, and just for their programmability. I'm usually JR all the way, but this feature is neat, and HiTec really has fair prices for their specs.....now if they'll only hold up i'll probably get more and more of them :).
Cheers

RE: Hi-Tech servos?
 

Mini flyer
did you also order the programmer?
Semper fi
Joe

RE: Hi-Tech servos?
 

Hi Joe. Jep i did. Gonna need it bigtime the way i see things coming....
Greets

RE: Hi-Tech servos?
 

Hi
I use alot of Multiplex servos, they have never let me down. I get the quality ( or better) of JR/Futaba but with the programming facility.
Right now I am just praying that since Hitec took Multiplex over they will raise their game to match Multiplex quality not drag multipex down to theirs.

Mike

RE: Hi-Tech servos?
 

I dont know about the quality of multiplex servos, but their transmitters and receivers aren't worth their weight in fertilizer....
Thats one part where i'm sticking to the graupner/jr stuff, or futaba.

RE: Hi-Tech servos?
 

Hi every body:
Me too have been using Hitec servos during years. In helicopters, jets (Roo, SM Gripen), Yellow F-18 converted to pusher, Combat models F-16, etc. Till now, never a problem. God bless me.:D

Juancho from P.R.

RE: Hi-Tech servos?
 

I´ve used many Hitec servos, switched to digitals in one of my helis and had never any servo related problem at all. Many guys at our field use hitecs, can´t remember a single servo related issue. I do not think, that jets are more demanding to servos than IC-Helis with their large amount of vibrations, if they fit the aprobriate torque rating! No vibes at all in jets, what should be the big problem? ECU-related electric interference seems to be a problem of the past.

Maybe Glorfindel hit the point:eek:?

Thomas

RE: Hi-Tech servos?
 

I have used Futaba, JR and Hitec. Mostly Hitec. I had a JR 8411 go, 2 Futaba 3004's but never a Hitec. I use 626mg 645mg, 5625, 5645 and 5945's. I use Hitec receivers almost exclusively. Never a failure.

RE: Hi-Tech servos?
 

Hi,

The only problem I've ever had with Hitec digital servos is one time one of the flap servos on my F-15 suddenly moved full deflection, then went back into place. A few minutes later, the other flap servo was about 1/4" off and stayed there. Those were very short, fleeting anomolies--and they didn't occur again. Of course, that's because I ripped those damn things the hell out of there and replaced them with JR!

In fairness, though, I must say that I think the Hitec 225BB and 225MG are the best, most reliable little servos ever made. They're strong as hell, too, on 6v. If you get the geometry correct with the linkage (to get the best possible mechanical advantage), you can use them just about anywhere you want to.

RE: Hi-Tech servos?
 

This shows you how perceptions and experiences differ...

I bought 3 HS225MG servos based on their impressive specs.

One stripped its nylon gear while being exercised without load on the bench.

Another was installed as a throttle servo on my 40-sized 3D profile. Despite the fact that the endpoints were all set so as to avoid stalling and the linkage was smooth as silk -- yet the same nylon gear stripped in less than 6 flights.

I tested the third one to ascertain its maximum torque and, once again, that same single solitary nylon gear stripped at less than 85% of the manufacturer's rated torque.

I even replaced the metal gearset with a nylon one and found it was still the same (common to both gearsets) nylon gear that stripped when the servo was loaded up -- which kind of means that paying more for the MG version is a total waste of $.

I then checked with others and found that there are alot of others who have had nothing but trouble with the 225s. That little nylon gear (in both the BB and MG versions) seems to be a really weak link (acknowledged by Hitec) and if you run them on 5-cells the motors tend to burn out pretty quickly.

Every other Hitec servo I've used has been excellent -- but the 225s left a real sour taste in my mouth -- and the mouths of many others it would seem.

Those who *have* had success with them seem to be those who don't push them anywhere near their rated limits -- which tends to suggest that Hitec have over-hyped this servo just a little too much.

RE: Hi-Tech servos?
 

Hi all Jet Jocks,

Seems a can of worms have opened up.

My question is : Are the peolple having problems with Futaba and JR servo's not complaining or are there no problems with JR and Futaba servo's?

Why do i only hear about Hitec servo's and there problems?

Surely there are thousands (my quess) more Futaba and JR servo's sold combined than Hitec servo's world wide. I maybe wrong?

And the last point i would like to make is about quality control and mass produce items. Some servo's are made in Korea and some in Malaysia and some in Japan. This could also have an effect on certain batches of servo's

Just my 2c worth.

Regards

Morne Nortier
www.mnmodels.co.za
Exclusive distributor for Skymaster RC in South Africa

RE: Hi-Tech servos?
 

I have received my HS5125MGs and am very satisfied. During testing up to now they have made a good impression, not one went foul, and the programming tool is magic. Will see how they hold up in flight. A friend is equipping his BAe Hawk from skymaster with all digitals from Hitec, and again no problems on the ground so far.

Morne, I have also had Graupner/JR die on me, even in flight. Managed to get em down again in one piece, though. None of my futabas have died, but they aren't that old or frequently in use....
My guess is that every servo dies some time, it's just a question of getting the ones that last the longest ;)

RE: Hi-Tech servos?
 

That's were you are wrong..There more Hitech sold in the world than Jr and Futaba together...

In the Jet world, most people are elitist, so if it doesnt cost many $$$ it CANT be good lol Look how people react when we talk about paper clunk uat vs bvm uat...Paper clunk is in EVERY way as good as BVM one but BVM one cost 60$ instead of 5$, so the BVM one MUST be better 'cause it cost more ;)

Like i said before in the big gazer almost every one is using Hitech ( dont tell me about spoonsered flyer) and the servos are a lot more stressed in that big vibrator with huge surface than in our jet...

RE: Hi-Tech servos?
 

I think, that´s the point. I don´t see any special jet related requirements besides choosing the right torque-class. No vibes - no probs;). I´m more concerned about servo quality in high vibration applications like Helis etc.

Thomas

RE: Hi-Tech servos?
 

Thomas,

I'm sorry to hear about your issues with the 225. Let me assure you, however, that mine haven't been working flawlessly for years due to using them only in low-stress applications. Indeed, some of the applications were high-stress enough that I'm hesitant to list them here!

RE: Hi-Tech servos?
 

Hi,

I don't think it's fair to say that "most" people are elitist. Sure, you have your cliques, but that is way too much of a generalization. Also, maybe you want to qualify your statement about how "almost everyone is using Hitech.." in giant-scale sport-planes. That has not at all been my experience over here.

RE: Hi-Tech servos?
 

Hi Shaun!

It was not me having issues about the 225. I never had an issue in flight with any of my Hitecs. One single 605 or 625 (don´t remember exactly) that was faulty out of the box, that´s all.

Thomas

RE: Hi-Tech servos?
 

Brave Soul [X(].....

RE: Hi-Tech servos?
 

My servo is bigger than your servo..!!!