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Ripmax Xcalibur Sports jet

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Ripmax Xcalibur Sports jet

Old 07-23-2020, 08:37 PM
  #2501  
CARS II
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Rich

You are correct, I used the one I build and use on my Reaction 54, that thing saved the Xcalibur's tail from getting roasted.




Last edited by CARS II; 07-23-2020 at 08:39 PM.
Old 07-23-2020, 08:44 PM
  #2502  
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You see, I prefer propane start engines, my P60 is propane start, this one is not, my only Kero start is my K80 that is mounted on my Reaction 54, that's why I use the exhaust deflector, if a Kero start engine doesn't start then there is Kero or diesel left inside the engine and on the next start you get flames, that doesn't happen with propane start, also the start up sequence is much faster.

Forgot to mention that the double wall pipes that we use for exhaust deflectors can take the heat from the flames, the single wall ones can not.



Last edited by CARS II; 07-23-2020 at 08:54 PM.
Old 07-24-2020, 03:16 AM
  #2503  
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Originally Posted by CARS II View Post
You see, I prefer propane start engines, my P60 is propane start, this one is not, my only Kero start is my K80 that is mounted on my Reaction 54, that's why I use the exhaust deflector, if a Kero start engine doesn't start then there is Kero or diesel left inside the engine and on the next start you get flames, that doesn't happen with propane start, also the start up sequence is much faster.

Forgot to mention that the double wall pipes that we use for exhaust deflectors can take the heat from the flames, the single wall ones can not.


Thanks Carlos. I donít have a blast deflector - yet. Lots of kit to pack for the field. I posted my pipe a few posts back. Single wall hot water heater duct. Used it the other day. Is that pipe painted?
Old 07-24-2020, 01:05 PM
  #2504  
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Yes, it has a heat resistance paint, find it at HD.
Old 07-24-2020, 01:11 PM
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Yes, it is!


Old 07-24-2020, 01:33 PM
  #2506  
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Dear fellow xcal-flyers,

i've been reading this thread for quite some time and i must say i am overwhelmed by the amount and the quality of information available.

After being hooked up to jets last year with a used (and crappy built) trainer with VT80, i've decided to build my own xcal.
Here's some photos and the mods i did and finished model, please do comment -> especially things you DONT like
Equipment is:
Jetsmunt M100XBL
Electron 40 with electron steering
Savox 2264MG all-round, on flap is 1270TG
Cortex PRO
2x 2s2p 3600mAh packs, 2 for turbine and 2 for RC system
intairco fuel trap

(edit) sorry just saw i am unable to add photos until i have 10 posts, will do that shortly
Old 07-24-2020, 04:04 PM
  #2507  
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Ok

Welcome, I like to see your build.

Tks.
Old 07-24-2020, 07:39 PM
  #2508  
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This is the exact paint that I've used on my exhaust deflector pipe.



Last edited by CARS II; 07-25-2020 at 01:16 AM.
Old 07-24-2020, 11:55 PM
  #2509  
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what connectors/probes do you use to fuel your jets ?
what i use is simple 4/6mm festo tube and double connectors, closed with one-way valve.
while it does provide basic function i was thinking of going the festo KD/KS way.

what are your solutions ?
Old 07-25-2020, 01:23 AM
  #2510  
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Tygon fuel line mid size and a fuel dot, can't be any simpler than that.



Old 07-25-2020, 01:33 AM
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On these pic you can see the tygon line safety wire to the UAT and at the end you can almost see the fuel dot, by now I've swapped the 6mm fuel line from the tank to the UAT and replaced with Tygon also, Tygon fuel line is fine there up to 27lbs thrust engines and I have a 6mm from the UAT to the pump with a small piece of 4mm over the fuel intake on the pump also safety wired and the 4mm going to the engine with safety wire also, that is my standard install at the moment.


Old 07-25-2020, 02:18 AM
  #2512  
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that was one of the options too and still is, frankly.
i was also considering the above option + a fuel dot and actually got one myself but didnt realise that in none of my jets yet.
Old 07-27-2020, 12:23 PM
  #2513  
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I made the first flights with my Xcalibur today, July 27. Actually made four flights with my instructor pilot. He made the first one and trimmed it for normal flight, then take off flaps and finally landing flaps. I set up 3 flight modes in the DX9 which makes flying it easier. I did make a takeoff on flight 4. Iím not ready for landings just yet. All of my experience is with large scale Extras and Citabrias, etc. Many flights on these types of planes. Jets are a new gig but is already becoming a lot of fun. I love to learn as much as I can in this hobby, having been at it for quite a number of years.

My instructor pilot Likes the Xcalibur quite a bit and thinks it was a very good choice for a first turbine jet. Heís an excellent teacher and an expert jet guy so Iím lucky to have him and other experienced jet types at my field here in Columbus Ohio.

More later guys...
Old 07-27-2020, 12:51 PM
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Dave Wilshere
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Rich

Welcome to the Jet addiction....

Dave
Old 07-27-2020, 12:59 PM
  #2515  
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Originally Posted by Dave Wilshere View Post
Rich

Welcome to the Jet addiction....

Dave
I love the smell of jet exhaust and kerosene in the morning! 😆
Old 07-27-2020, 01:28 PM
  #2516  
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Originally Posted by k8svrick View Post
I love the smell of jet exhaust and kerosene in the morning! 😆
By the way Dave, thanks for your replies to all my newbie questions throughout this build. Itís much appreciated.
Old 07-27-2020, 01:33 PM
  #2517  
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Congrats! Rich

Ohhh no, he felt for it, now he is trap in the jet realm for the rest of his rc carrier

Seriously, welcome to the club, and enjoy the ride.

Well done.
Old 07-27-2020, 01:35 PM
  #2518  
Dave Wilshere
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It’s always a pleasure, it’s what Forums should be about.

Dave
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Old 07-28-2020, 12:56 PM
  #2519  
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Dave

The Jetronics retract valve is working fine now with the new travel ends numbers 105-105%.

Thank you for the help with it.
Old 07-28-2020, 01:00 PM
  #2520  
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👍
Old 07-28-2020, 01:19 PM
  #2521  
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Technical note on the operation of the Jet Tronics proportional brake valve.

I use down elevator to apply the brakes after landing if needed. Here at my field we have 1000 feet of manicured grass runway so itís not need for most jets. Brake setting is off with stick neutral. Brake valve is ďoffĒ during flight whenever the gear is up. So brake air is not used until gear is deployed. Once gear goes down the brake valve becomes alive. Thereís down trim in the elevator in flaps 1 and flaps 2 flight modes so the brakes came on, although it was a small amount of braking action. This required reprogramming the brake valve, which required 10 seconds to accommodate the in-flight change in down trim.

I thought this was worth mentioning for those who have no previous experience with this and other similar devices for brakes.
Old 07-28-2020, 04:49 PM
  #2522  
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It is helpful, I have done some flight modes before and they work great! I assembled a Kincat and used flight modes, my friend also owns this Xcalubur and since he isn't that active at this time I have to KISS the install, I installed an older retract Jetronics valve, because it was his valve, I prefer the standard valves ( acctuated by a servo ) simpler set up.
Old 07-28-2020, 10:36 PM
  #2523  
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I should be able to maiden the X this Friday.





Last edited by CARS II; 07-29-2020 at 12:21 PM.
Old 07-29-2020, 01:46 AM
  #2524  
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Originally Posted by CARS II View Post
It is helpful, I have done some flight modes before and they work great! I assembled a Kincat and used flight modes, my friend also owns this Xcalubur and since he isn't that active at this time I have to KISS the install, I installed an older retract Jetronics valve, because it was his valve, I prefer the standard valves ( acctuated by a servo ) simpler set up.
Carlos, the flight modes are set up on the flap switch and i mixed the trims for each so I donít have to deal with an out of trim condition when I drop the flaps. Thatís a real work saver. Have a good flight with the new Xcalibur.
Old 07-29-2020, 03:15 PM
  #2525  
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Thanks Rich, will report back on Friday afternoon.

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