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Goldwing RC Corvus 60cc ARTF for electric set up

About as big as I want to go

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Percy Verance18/11/2017 17:46:51
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Firebox? Is it steam powered? surprise

I think you meant firewall Adrian.......yes

Edited By Percy Verance on 18/11/2017 17:48:07

Adrian Smith 119/11/2017 08:12:54
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Not sure I am with you there, Gary.

The AS150 anti spark connector comes with connectors for both sides of the join, therefore you can used whatever size connector you see appropriate for the termination of the lead/leads. I hope that helps. I have two 12S set ups and also working on this as a third one and I have used the AS150 on all of them and they really do work so I am happy to recommend them.

Gary Manuel19/11/2017 08:32:41
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I was assuming that the anti spark went on the end of one of the ESC leads, allowing you to plug your existing batteries directly into it. Am I to assume that you need to wire a patch lead in, which you disconnect while connecting your batteries, then connect the anti-spark as the final connection? If so, then yes, the size is irrelevant and one of the 7mm ones from buildyourowndrone will do.

I've been advised by someone with a better memory than me, that the ESC I bought some time ago is a YEP HV type, which has built in anti-spark circuitry, so I might not need one anyway. At least I know where to go if I need one. Thanks for the info Adrian.

Adrian Smith 119/11/2017 15:08:51
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1900 forum posts
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Yes Gary, your assumption is correct. Mind you even better if the ESC really does the job for you. When do you think you will start the build and what model is it to be?

Adrian Smith 121/11/2017 10:19:19
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Just had time to do a couple of little jobs. First to address the cooling method. The bottom of the fuselage comes fully covered, but there is in the kit a pre-covered hatch with ventilation slots cut in it that can be used. The slots are cut out with a soldering iron which is straight forward enough. However, cutting the film on the fuselage was a trial as I had to find the wood recess shape in the fuselage to cut the film accurately. All good fun!

fullsizeoutput_a65.jpegAll screwed in, not perfect but best I could do. I also cut out the pipe tunnel recess.

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Finally, there is a slot further down the fuz, which is used for a pipe exit which I also cut out to allow airflow all through the fuselage.

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Adrian Smith 121/11/2017 10:24:33
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1900 forum posts
617 photos

I fitted the U/C legs to allow for easier working on the plane. The bolts were a bit fiddly because the nuts had to be tightened within the pipe tunnel. Blue threadlocker used here. While I had the bottle out a finally fitted the motor and mounts with blue thread locker and shake proof Nordlock washers, finished with tightening the nuts up with a spanner.

fullsizeoutput_a66.jpegA nice finishing touch was the pre-manufactured fillet covering the U/C base secured with a screw.

Just waiting for the servos & propellor which are supposed to arrive today.

Edited By Adrian Smith 1 on 21/11/2017 10:25:16

Edited By Adrian Smith 1 on 21/11/2017 10:25:39

Adrian Smith 121/11/2017 14:08:54
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1900 forum posts
617 photos

Servos & propellor have arrived. I have chosen Savox 0251MG which are rated at 16kg at 6volts. I have used them before on this size aircraft for standard aeros and have had no problems at all. Where there seems to have been problems for users is when they are used in R/C car/truck applications.

fullsizeoutput_a68.jpegThe prop is a JXF electric 24x8 from 4-Max. I have used smaller props on some of my other electrics and they do the job to my expectations. Obviously I will have to drill the hub to fit the prop driver bolts. While I don't have a jig for that, I will use the prop driver plate at a template and work from there. I am not sure if I will buy a spinner yet as the youtube clip at the start of this thread shows the model without one and it looks kinda fine. We will see, however.

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Edited By Adrian Smith 1 on 21/11/2017 14:09:45

Edited By Adrian Smith 1 on 21/11/2017 14:10:21

Gary Manuel21/11/2017 16:05:27
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Posted by Adrian Smith 1 on 19/11/2017 15:08:51:

Yes Gary, your assumption is correct. Mind you even better if the ESC really does the job for you. When do you think you will start the build and what model is it to be?

I've looked at specs for YEP ESC and it does indeed say that anti-spark circuitry is built in. Thanks Iqon - you've saved me a few quid there.

It's for an Extreme Flight 2m Vanquish. I bought it a couple of years ago at a time when I was dabbling in F3A. I've since found that I get bored of repeating the same sequences over and over again. I've got most of the gear though, so I need to build it. Maybe over this winter?

Adrian Smith 121/11/2017 18:43:15
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1900 forum posts
617 photos

Extreme Flight do good kits. I am sure you could undertake some more daring aeros by increasing throws then see what happens, dare I suggest.............? dont know

Adrian Smith 122/11/2017 16:01:00
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1900 forum posts
617 photos

Back to business. As I am still a bit unsure of the make of Lipos I am going to use here I decided to temporarily use a couple of 7mm connectors on two short blank pieces on 10 AWG cable. Some lipos come with connector fitted, others require the buyer to do the job. For the moment I can use a couple of 6S lipos in series that I have in stock, just for testing. I will then re-adapt the end connectors when I take delivery of the intend batteries.

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Adrian Smith 122/11/2017 16:04:23
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1900 forum posts
617 photos

Next job is to attach the ESC to the motor box. I did this using 4 larger grommits under the ESC for cushions and 4 smaller grommits for the holding screws which are 16mm in length. There is also a slab of neoprene under the ESC too.

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I also had to cut out a slot in the motor box to accommodate all the ES C wiring, using cable wrap to combat any vibration.

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Adrian Smith 122/11/2017 16:07:13
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1900 forum posts
617 photos

As I am using a separate RX battery, I have fitted a heavy duty G.T. Power switch giving me the option of using a small Lipo or nimh depending on CoG requirements.

fullsizeoutput_a6e.jpeg

Adrian Smith 122/11/2017 16:08:47
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1900 forum posts
617 photos

Lastly, for today, I loose connected the motor leads. I am bound to have switch them around depending on which way the motor initially rotates.

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john stones 122/11/2017 16:23:31
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9369 forum posts
1428 photos

Neat n tidy as ever Adrian, mind your back lifting those 12s, back straight legs bend. face 1

Percy Verance22/11/2017 17:02:51
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6492 forum posts
110 photos

Do you still need to switch the wires if the motor is rotating the wrong way Adrian? I'd have thought the ESC would have had the programming facility to do that?  I see it is a programmable one.

Edited By Percy Verance on 22/11/2017 17:04:05

Adrian Smith 122/11/2017 18:05:27
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1900 forum posts
617 photos

Either way will do it, Percy. For me, it's just quicker to get it right when I am testing the circuitry before any fine tuning/programming via ESC is undertaken. One of my foibles afraid.

Thanks John. I think the amount of cash to shell out for 5000 mAh 6S Lipos will weigh more than the plane itself!!!!

surprise

iqon22/11/2017 18:09:27
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1326 forum posts
237 photos

Maybe some Black Friday deals coming up.I`m hoping there is

Rich too25/11/2017 11:00:18
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1011 photos

mmm, you've got me considering my servo options on the Sbach. I am tempted to use three of those Savox on each wing and 2 for rudder, 2 for elevator - it will cost half as much as the Hitec's. It appears that the older technology brushed motor servos are much cheaper.

Edited By Rich too on 25/11/2017 11:06:28

Gary Manuel25/11/2017 12:46:32
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1593 forum posts
1490 photos

Hmm - them Savox servos do look like a good price yes

I've never really looked at Savox - for some reason, I had it in my mind that they were overpriced. I'll have to keep them in mind for future projects.

Adrian Smith 125/11/2017 16:35:04
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1900 forum posts
617 photos

I must say I can only speak as I find and they seem up to the task on 50cc-60cc airframes. As I say the only proviso is if you are thinking of doing extreme 3D then they may not be the right thing. For the F3A schedule and freestyle aeros I have found them up to the task and have had no failures. I have had similar spec Hitecs that have given up the ghost, however. The Goldwing manual for the Corvus suggests 11-20kg for standard use with something like the Savox 1256 TG (£48) or JR8911 (£92!!)for more extreme use.

Edited By Adrian Smith 1 on 25/11/2017 16:37:33

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