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Harlock RC Viper 140

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Harlock RC Viper 140

Old 03-20-2019, 10:22 AM
  #76  
RAMPAGE_1
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Default Viper jet 140 with hv69 servos

I am building a Viper Jet 140 and incorporating MKS HV69 servos, thorough out. However, I am having difficulty locating metal servo horns for the HV69 servo. This is a 6mm, 25 tooth pinion servo. Does anyone have a source of what servo horns they used, on the HV69? The length of horns recommended for the VJ are 25mm, 20mm, and 12-14mm. Any help would be greatly appreciated.

Thanks!
Old 03-20-2019, 10:26 AM
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Originally Posted by RAMPAGE_1 View Post
I am building a Viper Jet 140 and incorporating MKS HV69 servos, thorough out. However, I am having difficulty locating metal servo horns for the HV69 servo. This is a 6mm, 25 tooth pinion servo. Does anyone have a source of what servo horns they used, on the HV69? The length of horns recommended for the VJ are 25mm, 20mm, and 12-14mm. Any help would be greatly appreciated.

Thanks!
they are the same size as Futaba arms I used secraft v2 esprit sell them or direct
Old 03-20-2019, 11:00 AM
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Unless you're looking for bling, mine has dozens of flights with the plastic servo arms with a K45 with no issues.
Old 03-20-2019, 01:36 PM
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Originally Posted by BarracudaHockey View Post
Unless you're looking for bling, mine has dozens of flights with the plastic servo arms with a K45 with no issues.
+1 on the plastic servo arms
Old 03-20-2019, 04:19 PM
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Originally Posted by BarracudaHockey View Post
Unless you're looking for bling, mine has dozens of flights with the plastic servo arms with a K45 with no issues.
He only asked what was fitting...bling is always good.....LOL
Old 03-20-2019, 05:28 PM
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Agree, bling is cool but I fly my BVM Bandit MKII with M140xbl and My Ultra Flash with M140xbl with plastic servo arms. Well over 500 flights in both without problems. My flying style is "spirited"...
Old 03-20-2019, 05:35 PM
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Thank you gentlemen!

Also, I've had trouble locating a longer servo arm, 25mm for the ailerons, period. I ended up using a cyclic arm off of an Align 600 helicopter. I only had three. This is a long servo arm that fits the spline and has a 2mm hole at 20 and 25mm. I used 2 of these servo horns for the ailerons(25mm hole) and used 1 for one of the elevators(20mm) hole. But I am one short. I can't seem to find this horn on any of the sites. The horn has a "F" stamped on it. If I could find another 2 more of these I think I would be set. I need one more for the other elevator half and one more for the rudder. Right now I just have a plastic horn that comes with the HV69 on the rudder. I bought a couple of metal horns from Aeropanda (MKS). However, they did not fit the pinion. I have been searching for the correct horns for the last week and have come up short. I will try Esprit and see if I can find something. I will attach a few pics so all can see what I am doing. It was a challenge to get the HV69 servos to fit in VJ. I have one more elevator to go, and then tackle the nose wheel steering for the ER 30 nose wheel.

Thanks, again,

G. Vargo
Old 03-21-2019, 03:39 AM
  #83  
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Originally Posted by RAMPAGE_1 View Post
Thank you gentlemen!

Also, I've had trouble locating a longer servo arm, 25mm for the ailerons, period. I ended up using a cyclic arm off of an Align 600 helicopter. I only had three. This is a long servo arm that fits the spline and has a 2mm hole at 20 and 25mm. I used 2 of these servo horns for the ailerons(25mm hole) and used 1 for one of the elevators(20mm) hole. But I am one short. I can't seem to find this horn on any of the sites. The horn has a "F" stamped on it. If I could find another 2 more of these I think I would be set. I need one more for the other elevator half and one more for the rudder. Right now I just have a plastic horn that comes with the HV69 on the rudder. I bought a couple of metal horns from Aeropanda (MKS). However, they did not fit the pinion. I have been searching for the correct horns for the last week and have come up short. I will try Esprit and see if I can find something. I will attach a few pics so all can see what I am doing. It was a challenge to get the HV69 servos to fit in VJ. I have one more elevator to go, and then tackle the nose wheel steering for the ER 30 nose wheel.

Thanks, again,

G. Vargo
Itís stamp F (for Futaba) because the are the same number of teeth 25T as FUTABA servos.....as I said above...

Any servo arms listed for Futaba fit the MKS unless you go into the micro ie HV93...then itís different.
Old 03-23-2019, 05:59 AM
  #84  
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Default Mks 69 srvos

Did you have trouble placing these servos?And how did you manage to put them?
Old 03-23-2019, 09:07 AM
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Originally Posted by E.N.T. View Post
Did you have trouble placing these servos?And how did you manage to put them?
I end up using the 69 only on the flaps and nose wheel steering....had to remove some material...

On the flight surfaceís, I end up using HV93, thatís after I found out the 69 were like not quite micro size....
Old 03-24-2019, 09:35 AM
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Vargo. If its posible place some photos of the servos. How did you manage to fit them.
thanks,
Hector
Old 03-24-2019, 02:14 PM
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I'm guessing sanding them until they fit.....I didn't want to do that....so I change to something that fitted these really nice looking servo holder...
Old 03-25-2019, 02:07 AM
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I have been flying mine since last June with the expert servos that Jag-rc sells. I fly quite a bit and the servos have performed flawlessly to date.
Old 04-05-2019, 08:22 AM
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Here is what you have to do to make the MKS 69 servos work on the doors. Kind of a shame to remove the c/f brackets. But that is what happens when you believe the magazine article saying they used the 69 everywhere. I bought the servos before the plane. They fit very good for the flaps but there is no way they will ever fit in the elevator.
Old 04-05-2019, 08:33 AM
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I did use the 69's everywhere. I admit that I probably should have been more clear about needing to mod the servo mounts.

The only place I didn't use a 69 was the nose wheel steering which I'm almost positive I mentioned.

Sorry for the confusion, they are great servos and coming up on 100 flights with no issues.
Old 04-05-2019, 09:26 AM
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I apologise. I did not want come across as being negative. You are right, they are great servos. I am very impressed that you got them in the elevators. My opinion was that they would not fit. Your article convinced me to purchase this jet. I am flying it with a K30 which is enough for me. Dry weight is 10.52lbs, wet weight with 24oz tank is 11.86lbs.
Old 04-05-2019, 10:20 AM
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You will love it, again sorry for the confusion and you are correct I should have been more clear, comments are always welcome.
I rarely fly at full bore even with the 45 so the 30 should be a great match.

Our weights are pretty close, be sure to start with the CG further back than they spec'd
Old 04-05-2019, 10:35 AM
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Didiwatt, I had also purchased those HV69 (8) specifically for this jet....when I found out they didn’t fit, and because, I really didn't want to destroyed these beautiful servo mount on most jet I normally have to redo all the mounts.....These were well done.

I just when through my drawer found a micro Ditex it fit perfectly so it on the rudder....and 3 HV93 that also fit nicely so I got another HV93 for ailerons and elevator’s....used the HV69 for Steering and Flaps....sold 2 to a close friend....and will used the rest eventually (3) for doors or something....
Old 04-07-2019, 09:41 AM
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I wonder if they sell them unpainted? I have a new little spray gun that I have been wanting to try out and this little guy would be perfect
Old 04-08-2019, 03:22 AM
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You might be able to order a white one.

Contact Heli Direct and ask for Greg, he would know
Old 04-08-2019, 04:32 AM
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Originally Posted by BarracudaHockey View Post
You might be able to order a white one.

Contact Heli Direct and ask for Greg, he would know
thanks. Just sent him a email.
Old 04-08-2019, 06:30 PM
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Originally Posted by JoeJr1485 View Post
I wonder if they sell them unpainted? I have a new little spray gun that I have been wanting to try out and this little guy would be perfect
Greg said that they might, but you would need to contact Harlock directly to check: [email protected]. Since he runs the HeliDirect warehouse full time and is not on email or phones (it would most likely go through Larry instead), I thought it would be easier to check with him and let you know here. :-)

Jenni Alderman
Old 04-10-2019, 03:47 AM
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Thanks Jenni!
Old 04-10-2019, 09:30 AM
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Originally Posted by fmrsdtr View Post


Greg said that they might, but you would need to contact Harlock directly to check: [email protected]. Since he runs the HeliDirect warehouse full time and is not on email or phones (it would most likely go through Larry instead), I thought it would be easier to check with him and let you know here. :-)

Jenni Alderman
okay thanks for the update and info.
Old 04-10-2019, 10:05 AM
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Originally Posted by JoeJr1485 View Post


okay thanks for the update and info.
You're welcome!

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