Go Back  RCU Forums > RC Airplanes > RC Jets
Reload this Page >

CARF Joker build thread

Notices
RC Jets Discuss RC jets in this forum plus rc turbines and ducted fan power systems

CARF Joker build thread

Old 07-04-2019, 03:29 PM
  #676  
kevin
My Feedback: (2)
 
Join Date: Jan 2003
Location: columbus, OH
Posts: 131
Received 8 Likes on 7 Posts
Default

I was told the production run of the pnp servos changed at some point at the factory and should be run at no more than 6v. I swapped all of my pnp servos out for mks.

Go back and start at post 440. I think there were some issues noted before that as well.

Last edited by kevin; 07-04-2019 at 03:35 PM.
Old 07-04-2019, 03:34 PM
  #677  
kekelala
 
Join Date: Dec 2010
Location: , SINGAPORE
Posts: 46
Likes: 0
Received 0 Likes on 0 Posts
Default

Originally Posted by kevin View Post
I was told the production run of the pnp servos changed at some point at the factory and should be run at no more than 6v. I swapped all of my pnp servos out for mks.
MKS - never go wrong! Iím using MKS 747
Old 07-04-2019, 09:15 PM
  #678  
Dave Wilshere
Thread Starter
 
Join Date: Jun 2002
Location: Watford, UNITED KINGDOM
Posts: 12,766
Received 608 Likes on 439 Posts
Default

That’s correct, the original MacGregor servos although labelled HV were strict 6v only. The instruction sheet says 5.9v Sensor switch, which is what I use and my customers, at the regulated 5.9v the servos work faultlessly. The servo has been replaced by a true HV servo now, but there are a lot of PNP kits made with the original servos.

i guess in your case the Flap servo works the hardest and it’s overheated

Dave
Old 07-04-2019, 09:19 PM
  #679  
Dave Wilshere
Thread Starter
 
Join Date: Jun 2002
Location: Watford, UNITED KINGDOM
Posts: 12,766
Received 608 Likes on 439 Posts
Default

Originally Posted by kekelala View Post


MKS - never go wrong! Iím using MKS 747
Unfortunately any can, a friend crashed his SU-27 because one MKS rudder servo went hard over and stayed there. Itís a dead servo.
Old 07-05-2019, 01:37 AM
  #680  
kekelala
 
Join Date: Dec 2010
Location: , SINGAPORE
Posts: 46
Likes: 0
Received 0 Likes on 0 Posts
Default

Originally Posted by Dave Wilshere View Post

Unfortunately any can, a friend crashed his SU-27 because one MKS rudder servo went hard over and stayed there. Itís a dead servo.
Awww that is true.
Old 07-05-2019, 04:01 AM
  #681  
Dansy
My Feedback: (53)
 
Dansy's Avatar
 
Join Date: Mar 2002
Location: Prescott, Ont.
Posts: 2,929
Received 143 Likes on 130 Posts
Default

Originally Posted by Dave Wilshere View Post

Unfortunately any can, a friend crashed his SU-27 because one MKS rudder servo went hard over and stayed there. Itís a dead servo.
True....but a lot less chance with a MKS then a PNP mystery servo set......
Old 07-05-2019, 05:25 AM
  #682  
jcterrettaz
 
jcterrettaz's Avatar
 
Join Date: Jul 2007
Location: Carp, ON, CANADA
Posts: 430
Received 19 Likes on 18 Posts
Default

I replaced the servos with Hitec I had to rework the mount ( wide) but I want to fly today!
I never use 7.2 receiver pack only Life 6.6.
Old 07-05-2019, 08:15 AM
  #683  
jcterrettaz
 
jcterrettaz's Avatar
 
Join Date: Jul 2007
Location: Carp, ON, CANADA
Posts: 430
Received 19 Likes on 18 Posts
Default

Ok I order a Voltage regulator ...thanks Dan
Until then not risking the Joker!!
Old 07-05-2019, 01:00 PM
  #684  
Dave Wilshere
Thread Starter
 
Join Date: Jun 2002
Location: Watford, UNITED KINGDOM
Posts: 12,766
Received 608 Likes on 439 Posts
Default

Originally Posted by Dansy View Post


True....but a lot less chance with a MKS then a PNP mystery servo set......
We have over 100 flights on the PNP servos without an issue, but at 5.9v. CARF were not very happy the HV servos turned out to be not HV! You can only do so much testing and putting MKS type/price servos in a PNP kit does not work.
We started testing the new MAC 2810HV servo a few months ago, but there is a lot of caution now before committing

Old 07-06-2019, 03:53 AM
  #685  
Dansy
My Feedback: (53)
 
Dansy's Avatar
 
Join Date: Mar 2002
Location: Prescott, Ont.
Posts: 2,929
Received 143 Likes on 130 Posts
Default

Originally Posted by jcterrettaz View Post
Ok I order a Voltage regulator ...thanks Dan
Until then not risking the Joker!!
JC, Your most welcome, anytime I can help.

Last edited by Dansy; 07-06-2019 at 04:10 AM.
Old 07-09-2019, 12:34 PM
  #686  
Speedrick
 
Join Date: Jun 2008
Location: Schelle, BELGIUM
Posts: 54
Received 1 Like on 1 Post
Default Elevator cable protection

Hello,

iím finalizing my Joker, and was wondering how to guard the elevator connectors at the stabilizer location, in such a way that they cannot touch the thrust tube. Just doet wanna toast the wiring there....



Rgds,
Eric
Old 07-09-2019, 03:12 PM
  #687  
kekelala
 
Join Date: Dec 2010
Location: , SINGAPORE
Posts: 46
Likes: 0
Received 0 Likes on 0 Posts
Default

Originally Posted by Speedrick View Post
Hello,

iím finalizing my Joker, and was wondering how to guard the elevator connectors at the stabilizer location, in such a way that they cannot touch the thrust tube. Just doet wanna toast the wiring there....



Rgds,
Eric
after installing the horizontal stab to the tail, I pull the servo wires from the stabís servo tray openings and zip tie the wires. In this way the wires will not be touching the thrust pipe.

Kekelala
Old 07-09-2019, 09:32 PM
  #688  
Dave Wilshere
Thread Starter
 
Join Date: Jun 2002
Location: Watford, UNITED KINGDOM
Posts: 12,766
Received 608 Likes on 439 Posts
Default

Put a loop of Velcro strapping around the lead, have a length of hook Velcro on the fuselage side, just above the tail seat either side. Plug the lead in and attach the loop to the fuselage side.
Old 07-21-2019, 12:39 PM
  #689  
Speedrick
 
Join Date: Jun 2008
Location: Schelle, BELGIUM
Posts: 54
Received 1 Like on 1 Post
Default Jokerís CG

Hello,

Today, i spoke some happy JOKER pilots. They told me about the CARF CG that is way to far fwd.
Since this was also mentioned in this thread some months ago, is there any update on the best location?




Kind Regards,

Eric
Old 07-21-2019, 12:39 PM
  #690  
Speedrick
 
Join Date: Jun 2008
Location: Schelle, BELGIUM
Posts: 54
Received 1 Like on 1 Post
Default Jokerís CG

Hello,

Today, i spoke some happy JOKER pilots. They told me about the CARF CG that is way to far fwd.
Since this was also mentioned in this thread some months ago, is there any update on the best location?




Kind Regards,

Eric
Old 07-21-2019, 12:51 PM
  #691  
Dave Wilshere
Thread Starter
 
Join Date: Jun 2002
Location: Watford, UNITED KINGDOM
Posts: 12,766
Received 608 Likes on 439 Posts
Default

Depends when you balance it. With no fuel in the main tank it would be way noseheavy at factory setting. Add 30mm fuel to the main tank and put it at 185mm
Old 07-21-2019, 01:03 PM
  #692  
Speedrick
 
Join Date: Jun 2008
Location: Schelle, BELGIUM
Posts: 54
Received 1 Like on 1 Post
Default

Ok, thanks for this Dave.
I have a 100ml hopper, located between the fwd part of the wing and the nose wheel well
Presume this one is to be full when balancing?
Old 07-21-2019, 09:03 PM
  #693  
Dave Wilshere
Thread Starter
 
Join Date: Jun 2002
Location: Watford, UNITED KINGDOM
Posts: 12,766
Received 608 Likes on 439 Posts
Default

Always! You don’t want to be landing with no fuel in that...
Old 07-29-2019, 03:04 PM
  #694  
apereira
 
apereira's Avatar
 
Join Date: Jun 2002
Posts: 1,731
Received 5 Likes on 4 Posts
Default

Hello guys,

Just got the Joker and before buying the turbine, is the Jets Munt new VT80BL relight more than enough? I do not want to break the sound barrier (yet) but want good performance without increasing the weight too much.

Regards
Old 07-29-2019, 09:02 PM
  #695  
Dave Wilshere
Thread Starter
 
Join Date: Jun 2002
Location: Watford, UNITED KINGDOM
Posts: 12,766
Received 608 Likes on 439 Posts
Default

We fly with anything from a JetCat P-60.

Dave
Old 07-30-2019, 03:08 PM
  #696  
pcskyhi
 
Join Date: Apr 2016
Posts: 86
Received 4 Likes on 4 Posts
Smile

Originally Posted by apereira View Post
Hello guys,

Just got the Joker and before buying the turbine, is the Jets Munt new VT80BL relight more than enough? I do not want to break the sound barrier (yet) but want good performance without increasing the weight too much.

Regards
I currently fly a Joker with the VT80BL and I can tell you the Joker flies great. No you wont break the sound barrier but it will get you your blood flowing. I have seen speeds in the 170s (mph) level flight. I am sure you could get into the 180's if you dove into it but I am not a speed demon either especially since I am new to turbines and just obtained my waiver so I still fly conservatively. The VT80BL has been flawless on Diesel with 5% Kingtech oil. I fly in Houston where it is hot and muggy and the engine has not missed a beat thus far. The Joker has been a great first turbine airframe and the Jets Munt engine has complimented the airframe well. A match made in Heaven.
Old 09-01-2019, 11:50 PM
  #697  
Desert Fox 1
 
Join Date: Jul 2014
Posts: 604
Likes: 0
Received 162 Likes on 132 Posts
Default

Old 09-09-2019, 11:30 PM
  #698  
Dave Wilshere
Thread Starter
 
Join Date: Jun 2002
Location: Watford, UNITED KINGDOM
Posts: 12,766
Received 608 Likes on 439 Posts
Default

Bit of a Joker day with three out at a Jettogether.




Old 09-11-2019, 11:27 AM
  #699  
Tom ling
Member
 
Join Date: Jan 2019
Posts: 84
Received 4 Likes on 4 Posts
Default

Is the Red and black scheme from carf or custom? It looks really smart.
Old 09-11-2019, 12:03 PM
  #700  
Dave Wilshere
Thread Starter
 
Join Date: Jun 2002
Location: Watford, UNITED KINGDOM
Posts: 12,766
Received 608 Likes on 439 Posts
Default

Mmm it’s Orange! But yes, it’s an Infinity scheme, but the owner had me remove the silver trim from the wing and tail.

Thread Tools
Search this Thread

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service - Do Not Sell or Share My Personal Information -

Copyright © 2023 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.