Servos

[Alexandre Cruz]

I was wondering what servo to use on a monoplane. I havee some HS 55 and some 5g tower pro (actually it weights 6g), which sevo should be used? Is thhe HS 50 to heavy? What about those Way point 3,8-4,3g, they are quite strong?

[Aio_1]

From what the competitive flyers here are saying I gather the HS 50 is ideal. You really want the lightest gear possible but many of the very light 4g and 5g servos tend to have poor resolution and centering so 6g servos seem commonplace in F3P. I've noticed that my very small servos are a bit gittery and centre poorly with the exception of Ripmax SD100s (same servo as the Dymond 4.7). I find the mediocre 4g servos okay for small fun planes but they may be too sloppy for pattern flying.

Have a look at Jurgens contest equipment lists for the servos of choice. The most popular include HS 50 and D4.7.

[3d Dave]

I just got some hs50 servos after reading about them in this forum. I must say that they are superior to any other servo I have tried. They center perfect and have very little slop in the gears, they are also very fast. They cost about $10 more than the "cheap ones" but I think they are worth it.

[ChrisBowker]

ive been using futaba 3110's for a few months now, i striped a few hs 50's on my foamy's...the 3110's are faster and lighter and stronger.

Chris

[Jurgen Heilig]

ive been using futaba 3110's for a few months now, i striped a few hs 50's on my foamy's...the 3110's are faster and lighter and stronger.

Chris

The Futaba 3110 may be stronger, but faster and lighter? No way. ;)

:) Jürgen

[ChrisBowker]

they can be the same weight or slightly lighter when you cut off the extra parts ect.

seems i forgot to mention that in my sleep deprived state ;)

Chris

[Harri Pihl]

Generally the HS-50 is a pretty good servo, only problem I see with it is some loosenes in gearing, might be not a problem with depron planes. But the loosenes can be removed with small modifications.

I've been using HS-50s for years with good results but I think that currently the Dymond D47 (or what ever) is better.

Harri

[Azarr]

Generally the HS-50 is a pretty good servo, only problem I see with it is some loosenes in gearing, might be not a problem with depron planes. But the loosenes can be removed with small modifications.

I've been using HS-50s for years with good results but I think that currently the Dymond D47 (or what ever) is better.

Harri

Hi Harri,

What modifications are you using on the gearing in the HS-50's?

Azarr
www.ecubedrc.com

[Alexandre Cruz]

I have been using tower pro 5 for the rudder and aileron (HS 55 for elevator) and they are very fast and center well. I asked about servos because I thought everyone was using those 3.8g servos.
If the weight range is 6g I will continue using tower pro due to its very low cost.
Does anyone knows how MM drops the stripes or paper (does he explodes a baloon?)?

[Harri Pihl]

Azarr,
The modification was posted here couple years ago with pictures showing the steps (could not find it but IIRC it was in indoor forum). The idea is quite simply: the shaft of the gearing and the motor are moved slightly towards the main shaft. It requires some work but I succesfully did that for two lightened HS-50 and all loosenes disapeared.

Harri

[Azarr]

Azarr,
The modification was posted here couple years ago with pictures showing the steps (could not find it but IIRC it was in indoor forum). The idea is quite simply: the shaft of the gearing and the motor are moved slightly towards the main shaft. It requires some work but I succesfully did that for two lightened HS-50 and all loosenes disapeared.

Harri

Thanks, I'll see if I can find it. Hope it wasn't lost in the reorganization a few years ago.

Azarr
www.ecubedrc.com

[jludwick]

Here is a little info on lightening HS-50s:
http://www.rcgroups.com/links/index.php?id=4068
Look about half way down.

[Dex]

Hello all,

I was looking for small servo and got 3 Dymond DS-50.
I don't know if one of you has seen that before but seems there is a gap between my Potensky receiver and the servos...

Look at : http://david.excoffier.free.fr/MVI_2600.AVI

I could imagine to have one wrong one but cannot imagine the 3 to be wrong...

David

[Trisquire]

That's odd. You mean the servos and receiver are not compatible?

Regards,
Tom

[jcstalls]

Azarr,

I hope this link works for the HS-50 tightening mod.

http://www.deeteeenterprises.com/NS.HiTec.HS-50.Slop.php

Jared

[Harri Pihl]

Thanks Jared,
That's the trick. In addition to that I moved the motor slightly towards the main shaft by remowing a bit plastic from the motor mount and added a bit balsa or something to other side. I also glued the motor to the mount.

Harri

[Dex]

That's odd. You mean the servos and receiver are not compatible?

Regards,
Tom

Yes, because I've no issue while testing these servos with a Graupner R700 receiver and I've the same issue with an other potensky receiver.
Potensky have an init phase in which they monitor the sticks position so that in case of massive tops they bring back servos to position monitored during power on.
Seems that there is a conflic between this feature and DS-50 numeric servos.
My retailer is going to perform some tests with the new Jeti receiver as from documentation they provide more or less that same "fail safe" feature as the potensky ones.

David

[Azarr]

Azarr,

I hope this link works for the HS-50 tightening mod.

http://www.deeteeenterprises.com/NS.HiTec.HS-50.Slop.php

Jared

Thanks Jared

Azarr
www.ecubedrc.com

[blucor basher]

I'm unaware of a better setup than HS-50s. I mod mine thusly:

Drill head for .050 carbon rod servo arm, install w/ CA.

Remove lower case.

Remove mouting flanges.

Shorten servo wire for particular location.

The best change is the longer carbon servo arm. It's easy to have a precise setup if your servo arm is 2" long. If the airplane is a bipe with lots of aileron area, I use an HS-55 modded the same way on the ailerons. I'm also far too lazy to use magnet wire for hookups.

[jcstalls]

Your welcome,

I am not sure what you mean by drilling the head for the .05 CF rod? Would you happen to have a pic of this for us?

Thanks,

Jared

[Jurgen Heilig]

Your welcome,

I am not sure what you mean by drilling the head for the .05 CF rod? Would you happen to have a pic of this for us?

Thanks,

Jared

Hi Jared,

I think he means something like here, on picture #3:

http://www.rcgroups.com/forums/showpost.php?p=5320173&postcount=1

:) Jürgen

[blucor basher]

Yes, that's it.

[jcstalls]

Ah Geez, kinda feels like having a V8. Thank Jurgen. Makes sense now and is a great idea, and cheap.

Jared

[Mister UHU]

I think he means something like here, on picture #3:

http://www.rcgroups.com/forums/showpost.php?p=5320173&postcount=1

:) Jürgen


Ugly but effective.
And permanent !

[yakman]

Anybody try the waypoint servos? I was thinking of giving them a try. The futabas are not easily accessible and their gears are a bit expensive.

[Petr Chyska]

Hello

A lot of the Czech indoor pilots are using Waypoint 60. I know, that is quite heavy servo but it's very reliable, fast, strong and centers perfectly... If you want to get slightly lower weight (approx. 1g less), you can remove the down part of the servo box. As for waypoint 38 I havn't got the subjective experience with it but my friend has tested them and he hasn't been satisfied. In his humble opinion, the W38 is useable for non-pattern models but for the pattern planes like especially for precision aerobatic never...

Cheers,
Petr

[Mister UHU]

Hello

A lot of the Czech indoor pilots are using Waypoint 60. I know, that is quite heavy servo but it's very reliable, fast, strong and centers perfectly... If you want to get slightly lower weight (approx. 1g less), you can remove the down part of the servo box. As for waypoint 38 I havn't got the subjective experience with it but my friend has tested them and he hasn't been satisfied. In his humble opinion, the W38 is useable for non-pattern models but for the pattern planes like especially for precision aerobatic never...

Cheers,
Petr

Hi Petr,

I saw your name in the German champs result,
so you must know what you are talking about !

Q: With the Waypoint W060 which version is used,
the ball bearing version, or the plain ?

Thanks.

[Petr Chyska]

Hi Petr,

I saw your name in the German champs result,
so you must know what you are talking about !

Q: With the Waypoint W060 which version is used,
the ball bearing version, or the plain ?

Thanks.

Hi,

We are using the plain version of Waypoint 60. The ball-bearing are slightly heavier. In the main, the plain version is totally enough for F3P, also for 3D flying with so light planes.

Cheers,
Petr

[Mister UHU]

Hi,

We are using the plain version of Waypoint 60.

The ball-bearing are slightly heavier.
In the main, the plain version is totally enough for F3P,
also for 3D flying with so light planes.

Cheers,
Petr


Thanks

UHU

[yakman]

Hello

A lot of the Czech indoor pilots are using Waypoint 60. I know, that is quite heavy servo but it's very reliable, fast, strong and centers perfectly... If you want to get slightly lower weight (approx. 1g less), you can remove the down part of the servo box. As for waypoint 38 I havn't got the subjective experience with it but my friend has tested them and he hasn't been satisfied. In his humble opinion, the W38 is useable for non-pattern models but for the pattern planes like especially for precision aerobatic never...

Cheers,
Petr

Thanks, I will give the 60's a go.

[Eagleburger]

I just got some waypoint 068s. They are the best micro servo I have used :D . Man I am impressed

[Eagleburger]

I just got some waypoint 038's. They are good as the 068's. I was always worried about buying servos this small, but the two of four I tried work perfect. I will definately buy more.

[Eagleburger]

The 038's are not as good as I first thought. They are excellent except they have a lot of slop around centre. It appears to be caused by a gear that can move sideways. I am gonna try and fix it.

[Denile]

Jeremy, any report on the Diamond 4.7's yet?