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Ripmax Xcalibur Sports jet

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Old 12-11-2018, 10:36 AM
  #2326  
Big Sky
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OK, so starting to run my air lines, any secret to getting the coil memory out of these air lines, or just have to deal with it, tried heating them, still twang back to a coil shape?
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Old 12-11-2018, 10:41 AM
  #2327  
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My suggestion, change the china pipes to festo tubing.
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Old 01-11-2019, 04:06 AM
  #2328  
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Hi guys.

Just got my Xcalibur, and wanted to dry fit the parts.

Then I found out that I have a defective nut in the left front boom mounting.

​​​The nut is glued in, but there are no threads in it.... So the screw just pushes throgh. There is no material in it to re-tap it. And there is no way to replace it, as the intake duct blocks it.

Whats the best way of fixing it?
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Old 01-11-2019, 04:16 AM
  #2329  
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i would coat the bolt threads with wd40. then use hysol glue into the hole with enough say 4cc/4ml then insert bolt a bit more into the wing than it would normally be when boom is bolted on. then tilt the airfram on its side so the glue surrounds the bolt as it dries.. i might even be tempted to dril a second hole near bolt hole for a second round of glue to be added. then when dry i would use visegrip pliers to remove bolt and all should be fine from there..

this is just my opinion im sure others will have more

my first thought was a blind nut glued in from behind going through a slice inside the oval opening to get to it....not sure that isnt a viable choice also
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Old 01-11-2019, 04:21 AM
  #2330  
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I would just drill in and glue an metric insert (brass)
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Old 01-11-2019, 06:10 AM
  #2331  
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Order M4 threaded insert from Amazon or ebay, drill and screw that in. The M4 screws are mainly for transport, the pin and spar share the load
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Old 01-11-2019, 08:41 AM
  #2332  
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Thanks for the tips.

There was enough meat in the existing nutsert, that i could dril it up to 4.5mm, and tap it to a M5 bolt. This seems to work.
Now ill know why if it stalls to the left side because of the extra weight :-)



Last edited by SJN; 01-11-2019 at 08:45 AM.
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Old 01-21-2019, 09:36 PM
  #2333  
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I am trying to figure out if my existing landing gear will fit the Xcalibur before I place an order. Is it possible for someone to measure the length of the landing gear axle to retract? Also, what size tires are used on the mains and nose?
Thanks,
Tone
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Old 01-21-2019, 10:54 PM
  #2334  
Mick Hargreaves
 
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Originally Posted by Agrav8ed View Post
I am trying to figure out if my existing landing gear will fit the Xcalibur before I place an order. Is it possible for someone to measure the length of the landing gear axle to retract? Also, what size tires are used on the mains and nose?
Thanks,
Tone
Mains - 120 mm extended, 17 mm trailing, Nose - 135 mm, 30 mm trailing. Nose wheel diameter 70 mm, mains 75 mm.
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Old 01-22-2019, 05:37 AM
  #2335  
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Im also looking for some landing gear with 6mm joiner pins. So far I have only found jet-a1, but none are in stock, and the manufacturer website is broken, and I have not got an email repy from them...... So they are out.

Electron also make some, and I have sent them a mail. The 110mm with 19mm offset seem to fit great. 120mm are too long.
https://www.electron-retracts.com/pr...gs-offset=19mm



Also found these from the UK anyone tried these ?
http://kingfisher-aviation.com/produ...railing-links/







Last edited by SJN; 01-22-2019 at 05:42 AM.
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Old 01-22-2019, 10:39 AM
  #2336  
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Originally Posted by Mick Hargreaves View Post
Mains - 120 mm extended, 17 mm trailing, Nose - 135 mm, 30 mm trailing. Nose wheel diameter 70 mm, mains 75 mm.
Thank you very much!
Tone
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Old 01-24-2019, 11:41 AM
  #2337  
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Originally Posted by Agrav8ed View Post
Thank you very much!
Tone
BTW, for anyone interested I purchased an Xcalibur from lindinglinfor $814 shipped without the landing gear. That's almost a $400 dollars savings from state side.
Tone
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Old 01-25-2019, 08:00 AM
  #2338  
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Good afternoon gents: Standard size Xcalibur is my first jet and whilst I have made a start, (this a huge but rewarding thread to search), so please forgive if this has been covered earlier. I am installing Electron retracts with the nose wheel steering and I am looking for advice please regarding the closed loop wire system required. Specifically, where exactly and what size holes to drill for the wires to pass through the nose-wheel well to line up with the steering servo yoke.

Any pics or pointers will be much appreciated.
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Old 01-25-2019, 08:19 AM
  #2339  
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These are the pictures from the electron site, and you can see what has been done :-)
There are also 2 types of steering, as you can see there has been made a hole in the fuselage for the stock electron steering.






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Old 01-26-2019, 04:12 AM
  #2340  
Charles aldous
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Thanks for reply and pics. The first one is the same as my set-up up with the Electron steering unit and I'm clear on the forward cut-out etc. thanks. The second pic shows the cable pass through hole with the non-electron steering unit. I was hoping to find a pic of where the cables should pass through the rear wall of the nose wheel bay without chaffing. I want to finish up with the smallest acceptable hole as possible and whilst I can roughly work out the angle I am hoping to get the hole cut spot-on first time.
Grateful for all input.
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Old 01-28-2019, 09:38 AM
  #2341  
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I noticed that most people are using the stock plastic control horns. Are you guys using plastic servo arms also? If not, what metal arms are being used that allow use of a clevis without significant slop?
thanks,
Tone
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Old 01-28-2019, 10:29 AM
  #2342  
Dave Wilshere
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All our JR servo models use the Super Servo arm which was a HD nylon arm. Savox HD arms are ok too, Futaba std arms are too brittle.

Clevis at each end

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Old 01-28-2019, 01:28 PM
  #2343  
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Originally Posted by Dave Wilshere View Post
All our JR servo models use the Super Servo arm which was a HD nylon arm. Savox HD arms are ok too, Futaba std arms are too brittle.

Clevis at each end

Great, thanks,
Tone
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Old 02-09-2019, 11:06 PM
  #2344  
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Default Retract help please



Hi
I am building up an Excalibur with air retracts.

I have noticed in some pictures that some people have safety wire ties on the airlines at each junctions others dont.
I have noticed that the supplied tubing is very hard to pull off once on a barbed fitting.
question ... do they need a safety wire on each joint... ??

also on the main retract hinge point there is a hole that is tapped with a thread however there is no grub screw inside ??
Is there supposed to be one.. it looks like it would safety the main hinge pin..

thanks for any answers.

Ray
NZ

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Old 02-10-2019, 12:10 AM
  #2345  
Dave Wilshere
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We almost never lock wire joints, but it’s much cooler here than some countries, if the tube gets warm it softens, so can on certain fitting design, slide off with pressure. The Xcalibur retract nipple has sharp barbs, so I would say even in hot conditions it’s fine without.

There should be an M3 x 6 set screw that locks the pin in place. They do miss it from time to time and even fitted they are often loose.

Dave
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Old 02-10-2019, 05:07 AM
  #2346  
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I fly my Xcalibur with stock air retracts since more than 3 years and in summer we often have 35C, never had 1 Festo tube off any nipple.
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Old 02-11-2019, 11:24 AM
  #2347  
Sbach
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Thanks Dave and Denis, very much appreciated.
Ill get some grubscrews for the retract hinge pin.
I also found most of the small wheel screws were all very loose... removed and Loctite now.
once again Thanks guys.
Ray
NZ
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Old 02-11-2019, 12:12 PM
  #2348  
Dave Wilshere
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Ray

All screws need loctite. Especially the CSK pivot screw, I grease the CSK head and loctite the screw into the pivot tube.

Dave
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Old 02-13-2019, 12:27 PM
  #2349  
Sbach
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Thanks Dave good advice
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Old 02-18-2019, 04:00 PM
  #2350  
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I am building my Xcalibur that I purchased from Lindinger. I have only mounted the control horns on the rudder, however I have noticed that there is not retainer for the control horns that goes on the other side of the hinged surfaces. I was under the impression that hinges are supposed to be through bolted? Also, it seems to me that the rudder is hollow. Is this correct?
Thanks,
Tone
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