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Post by flydiver on Jan 30, 2011 17:39:09 GMT 1
Some TX can have the throttle advance tuned as can some ESC. Unfortunately you have an unusual TX and unknown ESC. Can't help much except say read the manuals.
If nothing else works, removed prop, with plane battery OUT and TX ON advance throttle to full. Plug in plane battery. You should hear a couple beeps. Immediately turn throttle off. Should hear normal arming beeps.
That works to calibrate a lot of ESC throttle setting.
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Post by john66 on Jan 30, 2011 21:29:52 GMT 1
Well John, I checked the flim-flam, the wiggle-woggle, the flugelschnozzer and the willawong, but so far nothing seems to work. The magic smoke is in the correct position, so I'm now assuming the problem may be the snozzwanger. Or the fact it's a cheapo ESC. One or the other, anyway. Sounds like you really know your stuff! Sounds like a possible gravity problem. Have you checked the gravity of your local flying field? John |
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Post by toff on Jan 30, 2011 21:38:28 GMT 1
Problem solved, thanks to the oompah-loompahs! The little orange fellows pointed out that to program my ESC, I was putting the throttle on the TX to full, and then connecting the battery ( as per the instructions), Instead of only using half throttle, and then connecting the battery ( which is mentioned nowhere at all, except in oompah-loompah land). However, it works, so I now have a properly responsive motor and lots of snozzberries!
As for the gravity.....quite heavy at my field, as it seems to just pull planes from the sky, just when I'm not expecting it.
As Zap Brannigan (from Futurama) says: "d**n you Gravity! You win again!"
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Post by geoff2474 on Jan 30, 2011 21:48:42 GMT 1
TX is a Radiolink 2.4ghz 6 channel from giantcod.co.uk. Hi Toff Not sure if I should have started a new thread. Not sure I would know how to do it and address it to you. I have been looking at that Tx. It certainly looks like good value for money and has most of the bells and whistles. Especially compared with the others at silly money. How do you find it? Geoff |
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Post by john66 on Jan 30, 2011 22:14:05 GMT 1
Nice one toff, problem solved, and who'd of thought, a problem that is of this world!
I knew you'd get there.
Grrrr ruddy real life problems!
John
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Post by toff on Jan 31, 2011 0:12:37 GMT 1
Geoff, the radiolink TX, is, quite frankly, a wonderful piece of kit. It does do everything its more expensive cousins do, in fact the only thing wrong is it's not a 'full range' kit.
It's range is listed as 800 metres ( I have flown the SC and others to dot in the sky distances with no problems). The programming isn't that intuiative, but you get used to it.
Only other thing to mention is if you do get one, buy some 1800mah rechargeable AA's and a cheap charging jack off ebay, as it saves a fortune in batteries. Oh, and buy some spare RX's as well( about 9 quid each), it's a good investment.
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Post by ginginho on Jan 31, 2011 15:25:32 GMT 1
Only just seen this. I had the same with my first HobbyWing ESC, however I re-tuned the stick throw to accomodate it. Strange, it is the only time I've had to do it.
Those radios are value for money, no doubt. There are mods that you can do listed on the bigfish website, the best being to ensure you get full travel on the sticks (rather than about 80%) by simply adding a couple of resistors.
A couple of mates have em, I would've got one if they'd have come out earlier, i.e. prior to buying a DX6i.
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Post by toff on Jan 31, 2011 19:15:40 GMT 1
Well, first flights done today. ZOOOOOOMMMMM!!! just about covers it.
Brilliant, except for the ballooning at high speed, causing the plane to loop with no inputs (Back flip x 3), but I've found that adding 3 AA batteries into the cowl eases this a bit. ( This on top of the nose weight to get the CG right). I think I need to put a few more degrees down thrust on, just for decent level flight. Landings were also a nightmare, as even with a small power input, the flight attitude would change, with the plane wobbling in on approach, not helped by the stiff breeze blowing.
Make some changes and then try again.
Oh, and it does go like a rocket! ;D ;D ;D
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Post by geoff2474 on Jan 31, 2011 21:19:26 GMT 1
3 AA batteries into the cowl eases this a bit. ( This on top of the nose weight to get the CG right). ! ;D ;D ;D WOW, 3 AAs plus aditional weight, you could go on some bombing runs or get a job with your local freight carrier delivering parcels etc. ;D Geoff |
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Post by geoff2474 on Jan 31, 2011 21:26:07 GMT 1
Geoff, the radiolink TX, is, quite frankly, a wonderful piece of kit. . Great Toff, thanks for that info. I already have a set of 2450mha rechargables, the Tx I use for my sim will not work without batteries and it absolutely eats them. All I now have to do is persuade my management team that I 'NEED' to buy a new Tx, ESC, servos, connectors, prop, prop adapter and brushless motor. I am sure she will be very understanding about it  Geoff |
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Post by Dillzio on Feb 1, 2011 7:25:46 GMT 1
having a prop that's too big for the motor and just running it at half throttle or whatever isn't a good idea. I'm not sure exactly why, all I know is that's against the rules of how things 'should' be done. Why don't you invest in a really low pitch 8 inch, or a med pitch 7 inch prop so you can use the thing at WOT. If you can find a prop that will use 30A peak you'll be loving it!
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Post by toff on Feb 1, 2011 21:21:39 GMT 1
I've got a 7x6e prop I'm going to use, but even with this, I'm still thinking the 'ballooning' effect will persist, due to the wing shape and angle. If I was to raise the rear of the wing, thereby reducing the wing angle, do you think this would help any?
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Post by toff on Feb 1, 2011 23:38:10 GMT 1
Changed over to the 7x6 prop. Wattmeter on the go...slowly built up the throttle, at 163 watts the prop came off! And I thought I'd tightened it enough! Scary!
Too noisy, and unbalanced, so I've gone for an 8x6e. Got to 220 watts at 75% , and 24 amps, so plenty of power. Also increased the down thrust by 1 degree, so fingers crossed, everything will be OK now.
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Post by Dillzio on Feb 2, 2011 5:14:06 GMT 1
Changed over to the 7x6 prop. Wattmeter on the go...slowly built up the throttle, at 163 watts the prop came off! And I thought I'd tightened it enough! Scary! Too noisy, and unbalanced, so I've gone for an 8x6e. Got to 220 watts at 75% , and 24 amps, so plenty of power. Also increased the down thrust by 1 degree, so fingers crossed, everything will be OK now. UMMMM, if the prop came off the motor may be spinning backwards. The nut that holds the prop on should get tighter when the engine's spinning, not looser (are you using the rotor end prop adaptor, or a collet adaptor that attaches to the shaft?). With a motor that spins at such high RPM, it's also important to have well balanced props. I got a magnetic prop balancer off ebay for under 20 bucks, it's a worth while investment. |
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Post by geoff2474 on Feb 2, 2011 18:48:01 GMT 1
on Got to 220 watts at 75% , and 24 amps, so plenty of power. Also increased the down thrust by 1 degree, so fingers crossed, everything will be OK now. Hi Please correct me if I have it all wrong but if you had 220 watts and 24 amps, that suggests a voltage reading of 9 volts. Is that not pulling a bit too much out of the lipo? Geoff |
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