Ripmax Xcalibur Sports jet
#1952
Join Date: May 2007
Location: Kissimmee,
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Hello guys i have stock landing gear and the joiner pin on the mains keeps coming out and today i finally lost one whats the best way to take care of my problem.
thanks
rob
thanks
rob
#1953
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#1954
Thread Starter
Quite a few people missed the fact that there is a set screw holding in the pin, it does not need a flat...generally it just needs the set screw tightening! None of the screws are fully tightened or loctited from the factory, the whole retract assembly needs doing before installation. Screws on the wheels need tightening also or the tyres will come off.
#1959
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Location: Northamptonshire
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sorry to ask a silly question but as im new to turbines (not new to rc models) when im going to take off is it better to leave the brakes off and throttle up/accelerate to take off or put the brakes on go to full throttle and then come off the brakes ?
i will be taking off from a grass strip that has long grass at the end so trying to gage what is the best option to get up to get off the ground quickly.
cheers all
i will be taking off from a grass strip that has long grass at the end so trying to gage what is the best option to get up to get off the ground quickly.
cheers all
#1961
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#1962
sorry to ask a silly question but as im new to turbines (not new to rc models) when im going to take off is it better to leave the brakes off and throttle up/accelerate to take off or put the brakes on go to full throttle and then come off the brakes ?
i will be taking off from a grass strip that has long grass at the end so trying to gage what is the best option to get up to get off the ground quickly.
cheers all
i will be taking off from a grass strip that has long grass at the end so trying to gage what is the best option to get up to get off the ground quickly.
cheers all
#1963
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I recommend spooling the turbine with brakes on but depending on the length of the run way you may not need to do this- The Xcalibur takes off pretty quick at half flap and even quicker at full. While you are still getting used to the model put it at the very back of the runway to give yourself as much opportunity as possible and flying on a day with a little headwind will also help. You will love the xcalibur it's a good choice for someone who is just moving in to jets.
Many thanks Geoff as strip is long but always like to make sure she gets off in good time, i will deff try the flap at half for first take off as i know this helps with many of my other models and used to getting lift quickly and keeping a level flight till the air speed is picked up, really looking forward to flying this jet, almost finished but double checking everything is correct and set right before her maiden
#1964
Thread Starter
Never spool with brakes on! On grass it won't roll until the turbine has got on its step, but I have seen nasty accidents where held on brakes one wheel raveled the brake rubber, jammed one wheel, released the model rotated 90 degrees and fired into the crowd line...
We fly on a 120 (90 is the main part) x 80 strip and on a calm day and a P-100 I don't rotate at full power!
We fly on a 120 (90 is the main part) x 80 strip and on a calm day and a P-100 I don't rotate at full power!
#1965
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Never spool with brakes on! On grass it won't roll until the turbine has got on its step, but I have seen nasty accidents where held on brakes one wheel raveled the brake rubber, jammed one wheel, released the model rotated 90 degrees and fired into the crowd line...
We fly on a 120 (90 is the main part) x 80 strip and on a calm day and a P-100 I don't rotate at full power!
We fly on a 120 (90 is the main part) x 80 strip and on a calm day and a P-100 I don't rotate at full power!
#1966
I flew my Xcalibur of a short grass strip. Was off in less that 40m with take off flap. If I caught a bump it could be airborne sooner! You will have no problems.
Simon
Simon
#1967
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#1968
My Feedback: (26)
I fly almost exclusively from grass and have tried it both ways and too be honest I can't tell the difference. Remember, your wheels will start sliding on grass a lot sooner than on a hard surface runway. If you're running an older engine with a slow spool up you might see some improvement in take off roll, but the current crop of engines accelerate so fast you probably won't gain anything. I also agree with Dave, if there's an issue with one of the brakes it could cause control issues at brake release.
#1970
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Join Date: Nov 2004
Location: Sioux Falls, SD
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Elevator hinge issue
Hey all. I'm finally getting around to building Xcalibur #2. As I am dry fitting the elevator to the horizontal stabilizer, I notice that the outer two hinge pin holes in the horizontal stab are not centered. As suspected, the elevator is about 2mm high on the left side, and about 1mm low on the right. It wasn't an issue on my first Xcalibur.
I know there was a post earlier in this thread concerning this issue, and it was deemed that it would not affect flight performance. Even if it doesn't, it looks like hell. Also, if there is any chance there could be flutter at 150 mph, I want to minimize that chance as much as possible. My thought is to plug the outer two holes on the horizontal stab, and then drill new holes in the proper location. My question is what material would work best to plug the holes with that would not be a pain to drill through yet keep everything structurally sound. Any input would be greatly appreciated.
Thanks!
I know there was a post earlier in this thread concerning this issue, and it was deemed that it would not affect flight performance. Even if it doesn't, it looks like hell. Also, if there is any chance there could be flutter at 150 mph, I want to minimize that chance as much as possible. My thought is to plug the outer two holes on the horizontal stab, and then drill new holes in the proper location. My question is what material would work best to plug the holes with that would not be a pain to drill through yet keep everything structurally sound. Any input would be greatly appreciated.
Thanks!
#1971
Thread Starter
If you are using Hysol you can just move the holes and fill the space with Hysol. If not a hard balsa plug epoxied in will replace the wood.
You are right to get it level, the factory are being chased on improving this, the last kits have all been OK so far
Dave
You are right to get it level, the factory are being chased on improving this, the last kits have all been OK so far
Dave
#1973
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Location: Exeter, UNITED KINGDOM
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Having built and flown the Boomerang Intro and Elan I am now building the Xcaliber, all is going well, just one thing - the turbine mounting plates are angled down at the back, haven't noticed that in my previous jets, it does seem a lot of angle, is this correct?
#1975
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