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Ripmax Xcalibur Sports jet

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Old 02-20-2017, 01:17 PM
  #2076  
Mesche
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Hi Dave, hi pylonboy,
very helpful. I have ordered the Ripmax pneumatic gear today. I will try the stock valves first. Thanks a lot for your help!
Best regards
Markus
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Old 02-28-2017, 04:37 AM
  #2077  
horsefeetky
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did you have the gear down checking this cg point...
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Old 02-28-2017, 05:08 AM
  #2078  
Dave Wilshere
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Its not fussy! Normally I do with gear down.

Other good news more Xcalibur kits have arrived in Europe.
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Old 03-04-2017, 01:15 AM
  #2079  
Mesche
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Originally Posted by Dave Wilshere View Post
Its not fussy! Normally I do with gear down.

Other good news more Xcalibur kits have arrived in Europe.
Hi Dave,
what about gears? They are of stock at my German vendor since weeks.
Best regards
Markus
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Old 03-04-2017, 03:02 AM
  #2080  
Dave Wilshere
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Markus

Don't know why, there has never been a shortage of landing gear...even when we had no kits.
They are in stock in UK

Best Regards

Dave
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Old 03-08-2017, 01:27 AM
  #2081  
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Hi Dave. How does the Ripmax Elan compare to these jets? I love my Xcalibur, but bought an Elan also from Ripmax. Any thoughts on the kit? The hardware does not look as good as the Xcalibur range.
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Old 03-08-2017, 03:52 AM
  #2082  
Dave Wilshere
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Some people love the Elan, I didn't particularly like it, its more of a big envelope machine, great for blasting up and down a line. The positive is the range of turbines it suits, hardware from the original manufacturer was not the best, the long term aim is to have them made in the Xcalibur factory.
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Old 03-09-2017, 03:41 AM
  #2083  
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Thanks for the Reply Dave. Yes that is one reason I got the Elan as the Xcalibur turbine bay is a bit tight especially for my 8 and 10kg Kingtechs. Once its in, its in, but wont be possible to easily share a turbine between air frames. Keen to to still build and fly the Elan and compare it to the Xcalibur. Xclaibur I also think is much lighter so with a 8kg turbine it performs well, whereas a Elan I would think would require at least a 10kg to achieve the same vertical climb outs.

Regards
Karl
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Old 03-09-2017, 06:00 PM
  #2084  
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Hey all. Thought I would post a few pictures of my second Xcalibur. First one had an unintentinal "landing" in a bean field last August, and have building this one slowly over the winter. Almost ready to maiden.


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Old 03-13-2017, 02:11 PM
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Originally Posted by extra300s View Post
Hi Dave. How does the Ripmax Elan compare to these jets? I love my Xcalibur, but bought an Elan also from Ripmax. Any thoughts on the kit? The hardware does not look as good as the Xcalibur range.
I have had a Boomerang Elan but I am now flying the Xcaliber and I can't think of any reason to choose the Elan yes it's a decent twin boomer but the Xcaliber is better, I have had about 60 flights from our bumpy grass field and the stock gear is showing no signs of wear. My power plant is a Wren 80 and it has plenty of power for short take offs and non stop vertical. There is a tendency to over power the Elan I have seen some with a 140 turbine! it wasn't designed for that, the Xcaliber is designed so that Turbines of that size won't fit although I am sure it won't stop some people from hacking it to take one - 80 or 100 is plenty of power for it.
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Old 03-16-2017, 03:19 PM
  #2086  
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Totally agree, on my Xcalibur I've a Wren 80DCi that's planety fo power, light enough and I do not see any particular reason to overpower it too much much over 100N, unless having a 120 and limiting maybe total thrust...
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Old 03-18-2017, 12:03 PM
  #2087  
Dave Wilshere
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Steve Johnson had a ball with his new Yellow/blue Xcalibur, P-100RX, JR 28X combo today at the JMA AGM meeting.


I also did a check flight on this previously used Xcalibur with a Wren 80
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Old 04-02-2017, 10:50 AM
  #2088  
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Anyone know the matching Profilm/Oracover colors for the RAF display blue and red?

Last edited by Turbiner; 04-02-2017 at 10:57 AM.
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Old 04-02-2017, 11:06 AM
  #2089  
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There is no perfect match, there are even slight variations between batches of kits as the factory sources its own film (its such a big producer)
I think oracover dark red is close. people may have found the close match.
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Old 04-17-2017, 01:45 PM
  #2090  
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On my last flight of the day I thought that the elevator control felt a bit vague a bit like too much exponential, on inspection I found that the ply plate where the horn screws in was flexing, it has flown several hours before this happened and I don't think it was likely to come off, anyway I have now changed to a 3mm bolt all the way through, just something to keep an eye on.
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Old 04-20-2017, 05:33 AM
  #2091  
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Hey all,

sorry to be lazy but what are good rudder servos for this model?
figure standard sized ones maybe won't work?

regards,

Paul (recent acquirer of military scheme xcalibur)
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Old 04-20-2017, 05:53 AM
  #2092  
Dansy
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Mini servo like the JR 3421 or MKS 747
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Old 04-20-2017, 08:10 AM
  #2093  
Dave Wilshere
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Midi, just for weight saving. Savox 1250 or JR 3401/3421NX

Dave
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Old 04-20-2017, 02:18 PM
  #2094  
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Thanks guys..
Much appreciated.
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Old 05-03-2017, 08:37 AM
  #2095  
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Yesterday found the ultimate solution to prevent bent nose gear pins - land with the gear up!! First time in 55 flights ever had an u/c problem so no complaints. Pressure was fine. Once on a stand the retracts cycled 8x before even slowing! Investigation continues....... And certain "wise guy" witnesses to this event commented that it was my best landing yet with the Xcalibur. No damage whatsoever.
regards to all
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Old 05-03-2017, 12:52 PM
  #2096  
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John,
Might be worth dropping the retracts and checking all the bolts and pivot screws. Adding a little bit of grease to the sliders and checking you have not picked up some dirt/debris in the mechanisms. Was it all the wheels or just the nose ?

Simon
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Old 05-13-2017, 11:54 PM
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Since I started the comment here (Retracts on the XCalibur+) thought I would post a comment here. I have been a fan of the Pro-link series of electric retracts for years. I also had an issue with the Pro-links slightly to long for the +. I was advised by DreamWorks that my wheel wells must of been slightly off as another airframe they had the Pro Links fit just fine. It's odd that no other builder has had issues with there "off" wells using the JSM gear and now 3 others have had issues with the Pro Links in the + but that is what I was told. The solution I was advised was to grind the back side of the well off 1/8 inch. This pretty well ruins the sealed concept of the wells we all like some much. I needed up putting in a lathe and taking off 1/8 on the shoulder and shortening 1/8 inch. Fit fine now. If anyone wants an easy way to remove the spring or put back on take aluminum siding and make up shims to go on the spring. 5 shims lengthens the spring very nicely.
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Old 05-13-2017, 11:55 PM
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Anyone using half flaps for take-off? Seems more drag then lift.
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Old 05-14-2017, 12:34 PM
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Originally Posted by dmattmul View Post
Anyone using half flaps for take-off? Seems more drag then lift.
I find that about 20mm of flap is ideal for take off, too much will produce drag.
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Old 05-15-2017, 06:29 AM
  #2100  
Dave Wilshere
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Split flap always has an element of drag, but 20-25mm take off flap is about right and should always be used.
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