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Post by sham on May 22, 2015 7:08:40 GMT 1
I think that's probably the way to go. I'll pull the receiver from the SportCub along with its y harness and try and rule out servo failure.
Then, I guess its relocate the rx and new wiring.
A pain. Maybe I'll get another opportunity to maiden it in another two months...
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Post by Knackered Sailor on May 22, 2015 18:59:35 GMT 1
Oh what a shame sham. I'm gutted for you. Then again it's good that you spotted it before take off, that would have been a disaster. Let us know how you get on.
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Post by sham on May 22, 2015 19:12:55 GMT 1
Indeed, I'd have been even more annoyed to have lost control while airborne - there's no way I could have controlled it like that.
I've no time today, but I'll rip the Sportcub to bits tomorrow and test the servos - assuming its just the y harnesses as suspected, I'll go to the LHS to get some new ones and wait for another good day. |
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Post by sham on May 23, 2015 18:45:35 GMT 1
Well, the aileron is behaving itself now, but the flap servo is still going past where it should be settling in the down position and then going back again.
What seems to have happened was that the y connectors (Horizon Hobby branded) where cheap and nasty. Basic design was 2 sets of wires into 1 plug to get the split, seems flawed. New ones (JR) seem much more rugged and has 1 cable going to junction box where 2 cables come out to do the split. Hopefully be more reliable. I've moved the rx (I tried the one from the Sportcub and it behaved the same, so it isn't the receiver) to stop the cables getting crushed.
I think these got too much pressure on them for their poor design and caused a short, which appears to have damaged one servo. It seems fine now except the one servo overshooting its stop point before it settles on its second try.
I've ordered a replacement, which should sort it fully.
Fingers crossed.
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Post by pasquale91 on May 24, 2015 0:35:08 GMT 1
Good to hear you've got it sorted out.
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Post by sham on May 30, 2015 13:29:10 GMT 1
All back to normal now the new servo is in place.
No sign of glitches on the bench.
So its back to waiting for a good day to fly it. Soon, I hope.
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Post by hghost on May 30, 2015 16:38:11 GMT 1
Great to hear sham..some pics and video of that plane would be nice  |
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Post by sham on May 30, 2015 17:21:53 GMT 1
There are pictures earlier in the thread, and if at all possible there will be video of the maiden Its a beautiful machine. |
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Post by Knackered Sailor on May 30, 2015 23:08:09 GMT 1
Good news sham, fingers crossed for good weather and a glorious maiden for you.
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Post by hghost on Jun 6, 2015 0:13:04 GMT 1
Maiden yet ??
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Post by sham on Jun 6, 2015 7:16:38 GMT 1
Nope. Still no luck, took it to the field once but defeated by weather again. It's Saturday morning and the sun is shining. It's glorious in fact.
But I'm busy all morning, and the forecast says windy later. Hopefully its wrong.
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Post by sham on Jun 25, 2015 21:29:31 GMT 1
Copied from another thread... just to keep this one up to date. The Bonanza finally got her maiden tonight...
Charged the batteries yesterday, just before it rained... but tonight it was perfect, so off I went with the Supercub, the Sportcub and the Bonanza. The guy who was at the field last time was there with a multitude of planes and we had a laugh, me putting 8 batteries through the two foam planes and him flying everything from a foam biplane to a balsa 3D monster.
Then, out came the Bonanza.
No video, because I forgot my phone and was nervous enough anyway. I will add one when I get one.
On the first take off attempt, the prop hit the nose wheel (the wheel sprung against a rut) and took a chunk out of the tyre - and I nearly went home, but the other pilot told me to stop fannying around and just max the throttle instead of a gentle run.
So, up it went and I flew about 6 minutes before a very nervous but smooth landing. Second flight was better, but still nervy. Checking afterwards suggests that 10 minutes to a battery will be do-able.
So, impressions...
Its fast, like really fast. Very smooth and progressive but also very direct and fast to respond to commands. You need very gentle fingers! Its not properly trimmed yet, but flies nicely and is well balanced. Importantly, it came home in one piece. It won't corner slowly, which I have to remember. I didn't use the flaps or retract the gear - the flaps add an element I want to save until I'm more at ease, and the gear I wasn't going to risk with the damaged wheel. I'm thoroughly delighted, and will get more so as I get more relaxed with it.
A very good evening! At last.
A new wheel, and a little more bend on the nose gear - and she'll be good to go again.
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Post by hghost on Jun 26, 2015 0:54:03 GMT 1
Bet you were sweating bullets, but with a smile.
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Post by sham on Jun 26, 2015 10:26:18 GMT 1
Bet you were sweating bullets, but with a smile. You're not kidding. After the first landing and I put the radio down, my hands started shaking.. But grinning like an idiot. |
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Post by pasquale91 on Jun 26, 2015 18:24:48 GMT 1
Congrats on the maiden!
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