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Twister skylift problems

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Paul Williams27/02/2009 21:48:09
386 forum posts
81 photos

Bought one second hand and I cant get the dam thing to do anything. I tried testing the Rx with a sep battery and servo it seemed dead so I fitted another RX (not out of a twister) and got some success. plug in the rudder and throttle plugs and the motors seem to work ok (solid green light on ESC unit) but then should I plug in the two servos it all goes to rat ++++ and green light goes red. I have tried different servos so thats not the problem. Funny thing is just plug in the two servos without esc and they work fine.

So its only when all four plugs are connected it wont work. Does the heli have a special RX or should a standard one be ok.


Owen Hailey28/02/2009 10:11:03
391 forum posts
Hi Paul
The rx in the sky lift has to control all 4 motors as seprate units, so will be made to suit the sky lift only, and if you use a cx 4 in to 1 I dont think this will work, so as you have found out that the parts all work the only think to do is get a sky lift rx, and I think your problems will be at an end, hope this helps.
all the best Owen.
Jonathan Lewzey28/02/2009 15:15:44
1136 forum posts
683 photos
Replace it with a Skylift 4 in 1 unit. And do try and find out if equipment works before buying 2nd hand - i reckon its going to cost you about £40 for a new unit.
Paul Williams28/02/2009 17:50:28
386 forum posts
81 photos
Cheers guys
An Engineer01/03/2009 19:27:43
6 forum posts
Hi, I have most of a couple of these things and I found out real quick that the electronics is, like the rest of it, rather fragile and short lived.
I found that the receiver is no great shakes to replace, pretty much any rx/ 4 channel receiver can be made to work O.K. with the "four in one" box, BUT  the four in one box can die in the most interesting ways...  Mine (when I accidentally put a connection to the receiver in the wrong way round, doh!) started doing exactly what you describe, It apparently worked on occasion but didn't most of the time. It was also very sensitive to how many, and in what order, the leads were connected.
I was lucky enough to win the core of a skylift with good electronics, so as I could mix and match,for diagnostic purposes, whilst my 4 in 1 was performing it's dance of death, and subsequently was able to verify that I could use a couple of different receivers to fly my skylift, with the new unstuffed 4 in 1.
As someone has already pointed out, a new 4 in 1 box is 30 to 40 quid, and when you get a new one you still have the same lack of quality to contend with, SO, I got seperate components and am currently building a second skylift using a couple of esky esc's a  heading hold gyro from ebay, and an "elevon servo" mixing lead.  I also will be using a 8 channel receiver (so that I can add a tiny winch and some switcheable lights later...)
Early indications are that this lash-up works as I expected, but I need to get some "balance bars" and tidy up the wiring before I can try and fly it...
Then I will be looking for some busted servo's to cannibalise for the electronics, to fabricate my winch...
Cheers, Steve C. 
Phil Claridge01/03/2009 19:43:46
1917 forum posts
32 photos
can i use a 2,4 rx ie spectrum?
regards phil
Jonathan Lewzey02/03/2009 12:04:06
1136 forum posts
683 photos
on a skylift? No, the 4 in 1 unit contains gyro and ESCs aswell. Best just to stick with it and get a 2.4 RTF or BNF heli.
An Engineer02/03/2009 21:26:22
6 forum posts
Sorry, my previous posting contains a mistake.
My skylifts have a seperate receiver and 3 in 1 not a four in one as I referrred previously. So yes, you should be able to change it for a different receiver I.E. a 2.4Ghz one.
Cheers, Steve C.
Paul Williams03/03/2009 08:57:32
386 forum posts
81 photos
I am thinking the 3 in 1 box must be faulty. I have tried 2 different RX's and the unit goes daft as soon as all four plugs are connected. Its fine when just the throttle or just the servos are pugged in but fails when all 4 are ??? 
simpson j04/03/2009 10:32:58
189 forum posts
122 photos
 HI skylift to 2.4ghs  see chris hornby  posting or go to utube john
DON WILSON08/03/2009 17:45:22
47 forum posts
hi guys,
similar prob.
where do I find 'chris hornby' postings, cant seem to find a link to members to see thier posts.
simpson j27/03/2009 20:53:08
189 forum posts
122 photos

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