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Hy-Gain V (2795DX); Restoration
Topic Started: Saturday, 11. June 2016, 18:07 (17,584 Views)
Pook
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26 Charlie Tango 1862

Oh.. forgot to say... also ordered some of this.

Posted Image

The first one is a setting agent for the decal and the second is a solvent that actually partially melts the decal when applied. That sounds scary, but the problem with water slide decals is that need a perfectly flat surface or they wrinkle. While the front panel appears flat, it is not. The edges around the cut-outs for the knobs are actually rolled inwards slightly, and I also want to the decal to overlap the raised centre section so you can not see the edge of it. Partially melting the decal base layer once applied allows you to apply it to irregular surfaces. It has been used by model makers for years to apply decals to irregular and bumpy surfaces.
CB, 11 Metres, Ham Radio... it's all radio, so stop fighting about it.


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Pook
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26 Charlie Tango 1862

Ok... finished for today.

Front panel back in primer. Been inspecting it under a magnifying glass and the finish is perfect. Had several passes with primer to show errors.. sanding to correct... repainting etc... Happy with the finish now.

Posted Image

Crack restored...

Posted Image

..and a detail shot showing level of finish, ready for the top coats.

Posted Image


Just need to wait for the Tamiya paint to arrive now and I can crack on.

I'll get back to working on the case panels tomorrow if the weather is dry.
Edited by Pook, Wednesday, 31. August 2016, 17:55.
CB, 11 Metres, Ham Radio... it's all radio, so stop fighting about it.


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Pook
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26 Charlie Tango 1862

OK.. first pass with the satin black...

Posted Image


Some imperfections need flattening out.. will probably take 3 passes to get it perfect.

Will update throughout the day.
CB, 11 Metres, Ham Radio... it's all radio, so stop fighting about it.


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Pook
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26 Charlie Tango 1862

Satin black flattened with grade 1200 wet and dry.

Posted Image

This is s stage most people never do, yet it's crucial. I can understand why it's often skipped, as the case didn't look TOO bad with the first pass and it is wasteful of paint, but now it's flattened you can see how irregular the paint finish was. Anything matte has been flattened, and anything still satin has not been touched by the wet & dry.... that's how lumpy paint can be, even when sprayed.

Time for a second pass with a much lighter spray.
Edited by Pook, Thursday, 1. September 2016, 09:06.
CB, 11 Metres, Ham Radio... it's all radio, so stop fighting about it.


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John123
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26 Charlie Tango 763

Coming along nicely, David. :thumb:
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Pook
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26 Charlie Tango 1862

Cheers John
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Pook
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26 Charlie Tango 1862

Ok... second coat of black.

Once the heavy base coat is applied and flattened, I sprayed very lightly... almost a mist settling on the panel. I did this allowing 1 minute between coats to build up a slightly stippled finish that you will find on the 70s/80s cybernet radios from the factory.

only one extra pass was needed as I was very careful with the flattening.

Posted Image

Low baked at 80 degrees C for 15 minutes and first coat of black done.

Posted Image

Next up the lower panel, which was a complete basket case. There's a story to tell with that... back soon.
Edited by Pook, Thursday, 1. September 2016, 09:32.
CB, 11 Metres, Ham Radio... it's all radio, so stop fighting about it.


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Pook
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26 Charlie Tango 1862

Oh... don't forget... this panel is not done yet. It needs the gloss paint speckled on it to complete the factory finish.
CB, 11 Metres, Ham Radio... it's all radio, so stop fighting about it.


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Pook
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26 Charlie Tango 1862

A couple more shots of the base coat of black as the other images didn't show the finish very well.

The stippled satin finish

Posted Image

A close up detail shot showing the textured finish.

Posted Image

...and a final detail shot.

Posted Image


[edit]

These shots are lit to deliberately exaggerate the stippled effect.
Edited by Pook, Thursday, 1. September 2016, 10:00.
CB, 11 Metres, Ham Radio... it's all radio, so stop fighting about it.


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Pook
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26 Charlie Tango 1862

Ok... the basket case of a bottom panel.

As you may recall (see page 2) the case was in VERY bad shape. I stripped the paint and sanded and ran into a whole world of hurt! I've never seen such a crap piece of steel in my life! The rust literally appeared before my eyes as the panel dried. Even if I wet and dry sanded, then IMMEDIATELY dried with a paper towel, it was going red rusty before my very eyes.

Arse! I can't paint over rust as it just comes through eventually.

In the end there was only one practical solution, and that was to chemically change the rust into something else...

Enter Hammerite Kurust.

Posted Image

This stuff, which is a white fluid, will chemically change rust into a hard, protective coating which turns a purple/black when cured.

I applied it liberally, and left this panel to one side while I got on with the house work I needed to do. This was 4 weeks ago now, and no rust is coming through.

Posted Image

That's not painted... that's just the Kurust left to dry.

The corrosion is stable now, so I need to flatten ready for primer. I cannot use wet and dry though, as I'll run into the same issues, so I'll have to dry sand... not recommended, but I have no choice. I'll use a high build filler primer and do the flattening at the primer stage instead.
Edited by Pook, Thursday, 1. September 2016, 10:08.
CB, 11 Metres, Ham Radio... it's all radio, so stop fighting about it.


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Alfi66
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19 Charlie Tango 066

I just had to register when reading your project. What a nice job. Have been looking to source me this particular Hy-Gain again for some time now, but they're hard to find. Will follow your restoration with interest! :-)
Edited by Alfi66, Thursday, 1. September 2016, 11:29.
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Pook
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26 Charlie Tango 1862

Well.. this is a first. I've never had to use filler on a CB radio before. :)

Posted Image

Got some primer on it and it just revealed the extent of the damage the corrosion had done. Even though the rust is dealt with, the deep pitting it left behind simply can not be sanded out without leaving a noticeable depression in the surface. No choice... filler time!
CB, 11 Metres, Ham Radio... it's all radio, so stop fighting about it.


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Pook
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26 Charlie Tango 1862

Alfi66
Thursday, 1. September 2016, 11:28
I just had to register when reading your project. What a nice job. Have been looking to source me this particular Hy-Gain again for some time now, but they're hard to find. Will follow your restoration with interest! :-)
Thanks for the kind words Alfi.

Welcome aboard the CT train :)
CB, 11 Metres, Ham Radio... it's all radio, so stop fighting about it.


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Pook
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26 Charlie Tango 1862

This bottom panel has fought me all the way! Paint... sand... paint.. sand... Arrrgh!

I'm done for the day. It's looking good now in primer. There are a few really tiny errors hard to correct, but unless you happen to know exactly where to look and also happen to have a magnifying glass handy you'd never spot them. It requires one more flattening with wet and dry to clean up excess paint around the speaker grille, and if tomorrow is dry, it will get the satin black.

Posted Image

CB, 11 Metres, Ham Radio... it's all radio, so stop fighting about it.


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Pook
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26 Charlie Tango 1862

In case you're eagle eyed, and curious... yes, there is paint gumming up the speaker grille. This is normal when using "high build" primers, and I needed to use such a primer to help fill in the irregularities caused by the corrosion pitting and filling. Once all paint has hardened this will be dealt with tomorrow before the satin black coat.
CB, 11 Metres, Ham Radio... it's all radio, so stop fighting about it.


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Padrick
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26 Charlie Tango 2727

David, glad you are back on the project. Things are looking great I look forward to the rest of the work. Brilliant article mate, really interesting thank you.
26CT2727 & 2E0TWD
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Pook
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26 Charlie Tango 1862

Cheers Paddy. :)

Should have the case panels finished soon enough, and hopefully by then the paint will have arrived and I can get the front panel back in paint ready for the water slide decal. That's the stage that will be the most bum twitching.. LOL. Water slide decals are normally small things for model aeroplanes etc... I've never applied one this large. It will be interesting. I have ordered 2 sets.. one on a thin base, and one on a thicker base. I'll try thin first, and if I can't manage it the thicker one would help matters.

I have 3x decals per sheet, so all in all... 6 attempts at it.
CB, 11 Metres, Ham Radio... it's all radio, so stop fighting about it.


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Pook
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26 Charlie Tango 1862

I've just noticed something. That crack was NOT as a result of me dropping it, as I just noticed it on the earlier shot after first sanding it....


Posted Image

It's a bloody good job I DID drop it, or I may never have noticed that! It really would have thrown a spanner in the works once the decal was applied as you could move both halves of the crack when flexing the panel.

It probably happened when a previous owner dropped the radio, as the rear panel was also dented (sorted out now).

Just goes to show you... no matter how much attention to detail you give a project, there's always something easily missed.
CB, 11 Metres, Ham Radio... it's all radio, so stop fighting about it.


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John123
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26 Charlie Tango 763

Pook
Thursday, 1. September 2016, 09:55
A couple more shots of the base coat of black as the other images didn't show the finish very well.

The stippled satin finish

Posted Image

A close up detail shot showing the textured finish.

Posted Image

...and a final detail shot.

Posted Image


[edit]

These shots are lit to deliberately exaggerate the stippled effect.
Superb finish. :thumb:
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Pook
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26 Charlie Tango 1862

Wet day today.... lots of moisture in the air, so we'll see how it goes.

I may try to experiment with decal applying techniques though and do a few tests.
CB, 11 Metres, Ham Radio... it's all radio, so stop fighting about it.


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