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Post by banderson on Oct 19, 2013 1:18:28 GMT 1
I just received my super cub today from ebay, and I can get everything to work except the motor. I have tried binding many times, but still no luck. My question is, if I plug the rudder servo into the throttle slot on the receiver, will the Tx throttle stick move the rudder? I tried, and all I can get is full left rudder. Makes me question the Tx.
Thanks in advance
B
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Post by coupe1942 on Oct 19, 2013 1:44:15 GMT 1
Although you bought you plane on ebay, you may still want to contact HZ and ask for help. I have found them to be very good and prompt at answering my questions via email. I have not called them by phone for anything, but I bet they are as good there, too. They apparently like to set up a good rapport, as you may buy other products/parts from them in the future. Good luck with your fix. Someone here may be of help in answering your questions more specifically.
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Post by banderson on Oct 19, 2013 2:06:29 GMT 1
Coupe, thanks for the quick reply. I was a little hesitant to contact them because I bought it from a hobby shop on ebay as unused, but with a ding in the foam. As part of the deal, it was sold As-Is, with no manufacturer warranty. I emailed the seller, but haven't heard back. I may try to contact the manufacturer for help too.
Thanks
B
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Post by flydiver on Oct 19, 2013 7:17:30 GMT 1
The output from the TX will work on any channel....but, the throttle does not go both ways. It only goes one way. Since it does go one way, it's probably OK. TX are generally not the problem.
Pull the plugs on the motor. Short them across and ordinary D-cell. If the motor runs, it's probably fine. They are seldom the problem but it's easy to check.
There are 2 parts to the 'speed control' (ESC). One half controls the throttle, the other half controls the servos and receiver (RX). A REALLY common problem with the Cub and THAT ESC is burning out the throttle side. If it it.....sorry, $50 problem/replacement.
Which TX do you have?
If the DX4 make sure the throttle trim is all the way down, AND the lever/stick is ALL the way down when you plug in the battery. The ESC will NOT arm if it sees even a little positive throttle.
Report back.
FWIW I strongly recommend newbies to RC do not buy off eBay unless they know EXACTLY what they are buying. There is a LOT of RC crap out there and eBay is a major source of it.
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Post by banderson on Oct 19, 2013 13:15:51 GMT 1
I checked the motor out with a battery, and it runs fine. So, you think it is in the esc/receiver unit?
And for the the ebay comment, I couldn't agree more.
Thanks
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Post by flydiver on Oct 19, 2013 16:53:03 GMT 1
Did you try it after turning the throttle trim down?
Yes, I think it's the ESC/RX. But it may not be shot, just set up wrong. Do the trim adjustment-that little tab next to the stick. BTW-is the trim tab a slider or digital (clicks, doesn't move anywhere)?
If that doesn't work there is one more thing to try.
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Post by banderson on Oct 19, 2013 17:37:37 GMT 1
Yes, I did try binding many times with throttle and trims down and in neutral positions. Results are the same.
I appreciate all your help,
B
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Post by flydiver on Oct 19, 2013 17:43:17 GMT 1
If you have control movement > it is bound (binded?).
With battery OUT, push the throttle to full.
Plug in the battery. If you get a couple beep-beep sounds, THEN pull the throttle all the way back down. Hopefully you'll get a couple more beeps. Then it might work.
That is standard procedure for setting the throttle range for many ESC. If it gets set with the throttle partly on it won't arm.
I don't know if it'll work for that ESC but it won't hurt.
Hey guys, does the Cub ESC do the arming beep thing? I have never used the newer version. I had the old one.
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Post by banderson on Oct 19, 2013 21:45:34 GMT 1
I'm away from home right now, but I'll try to power on with throttle stick up tonight and report back.
(*edit* I tried powering on with throttle up tonight, but didn't get any activity from the motor.)
Seller contacted me and is shipping a new esc servo out to me on Monday, so all should be well in a few days.
Thanks
B
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Post by phillipega on Sept 29, 2014 1:55:58 GMT 1
Coupe, thanks for the quick reply. I was a little hesitant to contact them because I bought it from a hobby shop on ebay as unused, but with a ding in the foam. As part of the deal, it was sold As-Is, with no manufacturer warranty. I emailed the seller, but haven't heard back. I may try to contact the manufacturer for help too. Thanks B |
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Post by phillipega on Sept 29, 2014 2:07:16 GMT 1
I would like to know what was the outcome of your problem since I am having the same problem with my beloved several years old Super Cub
When I turn the transmitter on and plug the battery, the rudder and elevator servos work but not the throttle.
My plane landed in a lake and water got in it.
I am going to try the suggestion from "flydiver" and hope it works
My Super Cub is FM CH. 1 I tried to bye another transmitter thinking that it might have gone bad, but they are no longer available
Thanks
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Post by flydiver on Sept 29, 2014 2:46:10 GMT 1
You have an FM unit using crystals, it does not bind. Those TX have not been made for years, nor have the RX/ESC combos associated with that TX. That is an old plane, like 5+ years old.
You fried/shorted the ESC part when you got it wet, so the throttle does not work. You have a problem. Best start reading the 'upgrade' sections of the forum. You may be able to get used parts but that would be pure luck. I sent the last of mine old electronics to someone. The TX rarely goes bad. The ESC/RX is usually the problem.
Whenever the electrics get wet you need to cut throttle immediately, get the battery out ASAP, and dry everything out thoroughly before trying again....then hope.
ESC are made of 2 halves, stuck together. One half runs the throttle (the electronic speed control/ESC) part, the other side runs the receiver (RX) and the servos. This side is called the battery eliminator circuit (BEC). It is not uncommon to fry the ESC and have the BEC still work, like your are experiencing. This is confusing if you don't understand it really is 2 separate devices doing 2 different functions in the same package.
Having said that, Horizon saw fit to combing the RX with the ESC to make a more expensive proprietary unit to sell newbies that fry the ESC part, so the Cub unit has 3 functions. Clever, eh?
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Post by phillipega on Sept 30, 2014 15:11:20 GMT 1
Yesterday I went down to my garage (plane repair shop) and after checking that I had all the parts from other crashed planes and decided to finally tackle the conversion of my Super Cub from FM to 2.4
Spent good part of the day but I managed to do it and it seems that it came out very well.
I need to find the time to go out to the field and try it
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