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Glen's Models 35% Extra 330 electrification

Going where few have gone before!

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Adrian Smith 112/10/2019 08:49:10
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2308 forum posts
1067 photos

Indeed, Rich. I do tend to go for the easy life!

Thanks Cymaz, I am trying to be disciplined, but I know sometimes I am an untidy worker.

Adrian Smith 113/10/2019 16:59:06
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2308 forum posts
1067 photos

Moving on to the main wing I needed to glue the claw nut inside former 1. In this case the nuts plus plastic bolts are provided and they seem to be M5 in size as far as the bolts are concerned.

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The F1 rib has just about the right depth to take the claw nut so I used 5 minute epoxy while spreading Vaseline on the internal threads in case glue got on them. What usually do is slide a large washer on a bolt externally so the action of tightening the bolt draws the claw nut into the inner side of F1. Quite fiddly but got there in the end. In the meantime I had to enlarge the F1 hole to accept the claw nut which was about 6mm in diameter.

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That done I screwed in an M5 bolt while the epoxy dried to make sure the Vaseline did its job.

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Adrian Smith 113/10/2019 17:01:04
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2308 forum posts
1067 photos

Next I trimmed the aileron tube that stood proud of F1.

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Trusty Dremmel used for that job.

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Both wings needed doing.

Adrian Smith 113/10/2019 17:06:02
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2308 forum posts
1067 photos

Next job to do is fit the couplers to the aileron Secraft pushrods. Most important to note that the pushrod end with the engraved line is a right hand thread while the other end in a left hand thread. In this case they are 100mm turnbuckle rods.

The job of screwing anticlockwise coupler on was a bit of a challenge, but i got there in the end.

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The bolted to the horns loosely.

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Adrian Smith 113/10/2019 17:08:19
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2308 forum posts
1067 photos

Next I have to make the servo extension leads.

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The outboard servos will need a 55 cms extension lead while the inboard servos will require 25 cms leads.

Oh well better get on with that job!

Edited By Adrian Smith 1 on 13/10/2019 17:08:39

cymaz13/10/2019 17:37:05
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8766 forum posts
1190 photos

Making progress, mind you, there’s nothing else to do in this dismal weather

Adrian Smith 114/10/2019 10:47:41
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2308 forum posts
1067 photos

Know what you mean Cymaz. Another miserably wet day in Suffolk! crying

Adrian Smith 115/10/2019 16:30:02
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2308 forum posts
1067 photos

Rumour has that it might be flying weather Thursday here so on with the assembly for a couple of sessions. The prop arrived today and I am starting with a 28x10 Menz. I know some guys use 30x10s, but I am trying to keep the current draw down to start with until I am sure of the motor performance et al.

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Finished all the manufacture of the servo leads for the main wings.

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Adrian Smith 115/10/2019 16:32:46
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2308 forum posts
1067 photos

Started to fit the servos in the main wings. A bit of work here to start with as the servo slots in the wing are about 1mm too small for the servos I am using. That increased to job by 20 minutes or so.

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Tried and trusted threading method for the leads using thin C/F rod.

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Adrian Smith 115/10/2019 16:41:35
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2308 forum posts
1067 photos

On to the servo horns. Now the Macgregor servos are compatible with Futaba fittings (25 teeth I think) so I drilled out the metal arms which will be bolted to a plastic servo arms. I would have used the Futaba discs, but they are too small so I had to use the star shaped arms.

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Used blue threadlock here for the securing nuts. Fitted the arms to the servos and lined up the pushrods which will see the turnbuckles shortened a tad when setting up. The servo screws into the wing were unscrewed and thin cyano used to harden the wooden threads that were created by the screw.

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Edited By Adrian Smith 1 on 15/10/2019 16:41:58

Bruce Collinson15/10/2019 19:13:52
404 forum posts

Heatshrink over the servo extension joints, belt and braces?

BTC

cymaz15/10/2019 19:22:48
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8766 forum posts
1190 photos
Posted by Bruce Collinson on 15/10/2019 19:13:52:

Heatshrink over the servo extension joints, belt and braces?

BTC

You da man yes

Adrian Smith 115/10/2019 19:56:45
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2308 forum posts
1067 photos

Bruce, I have used plastic clips on the servo wire extension joints this time. In the past I have used heatshrink on the joints, but the wires didn’t like it (ask me about the heat used! ) crying

Rich too15/10/2019 20:12:11
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3053 forum posts
1070 photos

Nice progress Adrian. Are those servo arms the same on the two wing servos ? They are a different colour. I am just thinking about the matching wink

Edited By Rich too on 15/10/2019 20:13:15

Adrian Smith 115/10/2019 20:36:56
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2308 forum posts
1067 photos

Yes Rich they are both exactly the same. The light makes one look green and the other black, but they are both black!

As I am a lazy so-in-so I decided to use the PowerBox MicroMatch units on both wings for complete servo accuracy after all. I bought them from Nexus Models who supplied them very quickly. I have not put them on the wings yet, but I will cover the process in a later post here. I will be doing it via the PowerBox App using the BlueCom unit. Took me a while to find the App to download it. Not IT literate being the problem blush

Rich too15/10/2019 21:42:54
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3053 forum posts
1070 photos

yes better to do it accurately laugh

Adrian Smith 118/10/2019 16:43:51
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2308 forum posts
1067 photos

I think I might have averted a possible future disaster. I am using a couple of servos that were previously mounted in the tail plane of another model for the elevators. This is what I noticed.

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A pretty severe kink in the wire mmm...... Not good.

Anyway started to finished the rudder setup and taped the rudder to allow tensioning of the pull-pull wires.

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Adrian Smith 118/10/2019 16:46:38
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2308 forum posts
1067 photos

Servo installed before cyanoing the threads for the screws.

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Drilled out the servo arm to the right distance which is the further outboard position( this arm was used on a previous model).

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Rigging loosely fitted.

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Couplers in place ready for final setting up.

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Rich too20/10/2019 09:01:12
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3053 forum posts
1070 photos

Good progress Adrian, but you need to slow down a bit, I’ve been on mine for two years and counting wink

Adrian Smith 120/10/2019 09:45:37
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2308 forum posts
1067 photos

Yeah I know, Rich and there was me thinking I was being a bit slower than my normal pace!

Talking of baby steps, I have only done a couple of things in the last day or so. What slowed me down was I decided to take out the elevator servos to examine the wires after what I found above in a couple of servos I retrieved from another airframe for this project. Sure enough they were both kinked so the only way round is was to make the notch made in the servo slot to accommodate the servo wire much bigger which seems to have worked.

In the meantime I also finished putting the servos in the other main wing.

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