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Need help with c-arf B2 bomber setup
Getting close to finish the B2 bomber and will lake some assistance from successful flyer who have this jet and maybe he could help me with the setup to make it less stressful doing the maiden flight, playing to use spektrum power safe rx with the 3000 type gyro ,do you have some support suggestions thank you
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Hi,
Here is another B2 User that just completed is first flights https://www.rc-network.de/threads/ca....663473/page-4 i doubt that he can help with RX/TX questions as he uses Jeti cooool plane, by the way |
Sysiek - I'll put you in contact with Jessy out of Denver, he owned a CARF B-2 and probably had more successful flights than anyone else I'm aware off.
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Thank you, this is not very common jet and all the help will be very useful to make less stressful maiden flight, I’m currently looking for two 100 size turbines possible used for bargain price, the jet was not brand new and needed to have slight repairs to the nose section because of one turbine flame out on takeoff and cost the jet to roll to one side and hit the grassy area.
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Originally Posted by sysiek
(Post 12687357)
Thank you, this is not very common jet and all the help will be very useful to make less stressful maiden flight, I’m currently looking for two 100 size turbines possible used for bargain price, the jet was not brand new and needed to have slight repairs to the nose section because of one turbine flame out on takeoff and cost the jet to roll to one side and hit the grassy area.
Sounds like Andy's old jet. I've seen it fly several times. Always a thrill and looks very cool. An RC technical achievement for sure. Post photos as you go along. I can't help any but best of luck with the project. Gary |
Yep, it's Andy's.
Definitely post some pics, would love to see how the repairs are coming along. I know nothing of the setup but out of curiosity why not use the setup/program Andy had in it with the Cortex gyros? |
Yes that’s that one , will post something later
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Looking great. Keep posting pics. What is the purple filler material you used?
Thanks |
Just some windows frames, decided to go full carbonfiber and just live the black windows panels this should be lighter and stronger than the original version
https://cimg9.ibsrv.net/gimg/www.rcu...123385cd1.jpeg https://cimg1.ibsrv.net/gimg/www.rcu...ce03c8bf2.jpeg https://cimg4.ibsrv.net/gimg/www.rcu...ee93debb1.jpeg https://cimg6.ibsrv.net/gimg/www.rcu...3045d9c72.jpeg https://cimg9.ibsrv.net/gimg/www.rcu...b33add2ed.jpeg |
Nice work on the repair
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Trying my best, the worst thing to make it was the plywood formers and keep it all alignment with the remaining led and the nose to not end up too low or too high, the body is just skin and this could be formed to shape, for now I’m just trying to make it air worthy and maybe later after possible success some more details to make it look more realistic.
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Adding one extra valve for the nose gear door to make it close after the nose gear revolution , but I have a difficult time to setup the jettroncs sequencer just got to live my garage and try to make it work tomorrow?
https://cimg9.ibsrv.net/gimg/www.rcu...f0562774e.jpeg https://cimg1.ibsrv.net/gimg/www.rcu...3c82aab57.jpeg https://cimg2.ibsrv.net/gimg/www.rcu...e0edae0c7.jpeg |
The most important thing to set up correctly is the drag rudder and gyro set up. It pretty much needs its own gyro.
it’s been along time since I built the one for Barry but I remember that part. It had 2 cortex gyros and then the gyro on the brakes and steering. We had ours doing barrel rolls and it was a joy to fly after the set up was correct. But boy the first flight was scary as hell. tge weird part about this plane is it will fly around just fine side ways. You need to be using the rudder at all times. Also plane acts funny when gear doors are open. |
That’s why I was even thinking about to make them split half way, not very scale but should help flying |
So I’m fighting with the jettronics sequence gizmo and officially this is the most difficult thing to figure, I was able to program this thing more than 3 times the correct way I want it to work and when I just wanted to maybe delay one function like the gear door this thing goes stupid and needs to be programmed again, who design this thing and charge so much money for it, I have one from hobby king before for only $12 and after the first prog this thing stays solid and is very easy to setup with electronic number screen, will try tomorrow again and again and maybe I’m not going to jump on it or use my hammer
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Originally Posted by Viper1GJ
(Post 12687439)
Looking great. Keep posting pics. What is the purple filler material you used?
Thanks |
I’m not sure but I was told that I’m able to set totally different settings for the spektrum 3000 gyro like 10-15% gain for alieron and elevators and 100% for the rudders and even separate the string servo to separate gains and have it off when gear is up , is this possible? Please let me know because this is what I’m planning to use in this jet thank you
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So I got the retracts and gear doors to work with the jettroncs sequencer , they instructions should say that use the G3 slot for the gear doors that opens and close after each gear rotation and G1or G2 for whatever gear door that you’re waiting to close after each gear rotation,
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So I’ve not cared much for the spectrum gyro but that’s me. I know some love it. We had the first B2 flying on cortex. It was hairy getting the gains correct. I don’t remember what they where though.
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For sure right before the first flight I’m going to setup the jet with Ali and guys from horizon, I have two cortex and I have the I-gyro , optera and spektrum to choose from , but I was told that the spektrum is able to do lots of modes with one gyro and is not passive like some other ones so more channels are available to setup, for sure I will check them all and choose the best one , for now I’m looking for smaller turbines like 80-100 with modern size and weight, I noticed something very interested that the full scale B2 using the center elevator as a flap and goes down on landing but this is full scale one with one million dollar control computer .
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The down elevator probably had up aileron for some drag . You don't need a million dollar transmitter, just one you can set up some crow.
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Ok so after long waiting I finally got two small turbines the sw80b and maybe that’s what I’m going to it, the secondary choice is to use two jetcat p-100rx - stronger but much heavier, so the spektrum gyro is no go probably the two cortex , did you guys make the clams shell rudders as a head look setup or regular with lots of gain , I’m wondering if would be possible to have them open more for landing as a drag spoilers with maybe 20-30% more open than regular rudders, let me know what you guys think.
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Originally Posted by gunradd
(Post 12687638)
The most important thing to set up correctly is the drag rudder and gyro set up. It pretty much needs its own gyro.
it’s been along time since I built the one for Barry but I remember that part. It had 2 cortex gyros and then the gyro on the brakes and steering. We had ours doing barrel rolls and it was a joy to fly after the set up was correct. But boy the first flight was scary as hell. tge weird part about this plane is it will fly around just fine side ways. You need to be using the rudder at all times. Also plane acts funny when gear doors are open. |
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