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Re: Chev EK
Posted: Thu Jan 30, 2020 3:03 pm
by rosco
Well written, Harv - great explanation.
frats,
Rosco
Re: Chev EK
Posted: Thu Jan 30, 2020 3:44 pm
by BILLY BLACKARROW
Thanks Harv
Electricity and me are not good friends

BUT I will try not to stuff it up.

but what is the Electronic box.
Re: Chev EK
Posted: Thu Jan 30, 2020 4:20 pm
by EK283
Hi Billy,
Harv is all over it !!
The only issue with LED's and alternator current is that current draw is not enough on some installs and the alternator will not charge.
So the box gives the alternator current, and it also lets the alternator see voltage both sides of the light. This allows the light to turn off when there is equal volts from the battery side and the alternator side usually around the 13 volt mark.
Harv is lucky because some alternators will hold a residual magnetic current and will work with just a LED.

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This is the control box that I bought only because I don't want any issues like the above, simple to wire as well,
Greg
PS if you read that the alternator can make the engine run on this can happen but in certain situations only ( I have deleted that bit sorry for the confusion ).
Re: Chev EK
Posted: Thu Jan 30, 2020 6:58 pm
by Harv
EK283 wrote: Thu Jan 30, 2020 4:20 pmPS if you read that the alternator can make the engine run on this can happen but in certain situations only ( I have deleted that bit sorry for the confusion ).
I should have explained backfeed.
Step 4: You turn the ignition switch off, which disconnects the battery from the coil. The engine theoretically has no spark, so it dies. However, the alternator is still spinning around, making power as the engine winds down. The L terminal still has +12V. If the idiot light is high enough wattage, it will let enough power flow backwards to power the coil (+12V from the L terminal, through the madly glowing idiot light, to the coil, just like the purple arrow in my dodgy diagram above). The poor engine still has spark, despite the battery being disconnected from the coil. The damn thing won’t stop!
To prevent this, you can:
a) fit a low wattage idiot light, so the backfeed current is too low to fire the coil (an LED is a nice low-current option),
b) fit a diode in the idiot light wiring (the green line) so that current cannot flow from the alternator to the idiot light (an LED is a nice diode)
Cheers,
Harv
Re: Chev EK
Posted: Fri Jan 31, 2020 1:46 pm
by EK283
I cannot achieve greatness today its to hot !!!!!!!!!! Shed is trying to roast me.

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I may try a night shift otherwise early start tomorrow.
Greg
Re: Chev EK
Posted: Fri Jan 31, 2020 5:38 pm
by 59wagon
Wow, nightshift sounds like a good idea Greg.
Just hearing Canberra has been declared a state of emergency

Take care all you threatened by all these fires in our great country.
Cheers,
John
Sent from my iPhone using Tapatalk
Re: Chev EK
Posted: Sat Feb 01, 2020 11:16 am
by EK283
Well it all hinges on this !!!! A night shift done, cleaned and sandblasted all the door hinges.
Got up early to beat the heat and 2 hours later hinges done.
I cheated with the paint a little today, just a trick from a spray painter mate.
First epoxy

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Then base coat with a touch of hardener, the base coat is urethane but normally no hardener is used because its sole purpose is colour with no strength. The hardener ties it into the epoxy

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Last 3 coats of clear, with no sanding or mucking around and the hinges are done ready for install tomorrow.

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So this is all done wet on wet meaning before the hardener fully cures, its a bit tricky because you have to let the solvents out between coats, this is referred to as flash off. Now I can put a door on and free up the panel stand for the next one.
No More today way to hot !!!!!!!!
Greg
Re: Chev EK
Posted: Sat Feb 01, 2020 1:33 pm
by rosco
Thanks Greg,
the hinges look amazing.
I have heard mention of this "wet on wet" between tradies when at a commercial supplier picking up paint.. I never knew what it meant, and the exchange was so quick between them that it was all I got... they obviously knew the process... and that simple exchange of just three words was enough.....
I now understand the process, thank you... it will save a lot of sanding and keying up... keeping the coats "fresh" so that they will bond - and possibly "fuse" for an almost solid "one coat" result, even though there are five or six wet coats of differing materials.
Looking very good... Issue I see is, to my limited experience with 2K - how brittle is this paint when tightening bolts down on it to secure the hinges?
I understand the clear is a lot softer than the colour and primer...
frats,
Rosco
Re: Chev EK
Posted: Sat Feb 01, 2020 5:16 pm
by Errol62
Your attention to detail is admirable Greg
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Re: Chev EK
Posted: Sun Feb 09, 2020 9:02 pm
by EK283
Crappy weekend, spent Saturday changing rear control arms and swaybar links on my Patrol with the intention of a big Sunday on the EK.
Ahhhhh no, lost power most of the day and had to watch the pelting rain from inside the house !!!!
All I could manage was a hinge repair / replacement of the spring clip, only found it when I went to install it of course !!!
Rivets from factory so I ground and punched them out and tapped the holes and used small head screws with locktite.

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A bit boring really.
Greg
Re: Chev EK
Posted: Sun Feb 09, 2020 9:38 pm
by Errol62
I think you get rivets with the kit which has put me off a bit. Looks easier with screws the way you’ve done it there. It is a pain when the door won’t stay open so console yourself.
FB ute fixer upper, EK van on rotisserie
Re: Chev EK
Posted: Mon Feb 10, 2020 9:50 am
by rosco
I wouldn't say "boring" Greg......
Everything you post up is a gem in its own right.... might seem boring to you, but there is an audience out here who watch development with baited breath for the next episode....
Good work, are you going to etch and coat those screws to match?
frats,
Rosco
Re: Chev EK
Posted: Tue Feb 25, 2020 6:27 pm
by EK283
Thanks Guys,
Started the headlining after spending most of the weekend cleaning and painting the bows. I will let it hang for a week or so then start the install, hopefully most of the creases will settle.

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Also prepped the front doors for final rub back and colour this weekend hopefully.
Greg
Re: Chev EK
Posted: Tue Feb 25, 2020 6:56 pm
by rosco
Looks good, Greg.
You know all this, but apparently once the headlining is in - a hair dryer will take out most of the loose parts..... think there was a thread on it somewhere.
Color - that will cheer you up.... and give you some impetus to get moving...
Computer is still playing up here.. can't access my files until Micro-scunge fix the latest updates for Win 8.1... I'm having to log in as a guest on my own machine..... grrrrrr
frats,
Rosco
Re: Chev EK
Posted: Tue Feb 25, 2020 6:59 pm
by rosco
Oops... forgot to mention, I see your can of SW-2 on the floor... bought some myself and have used it on a newly acquired 6 x 4 trailer... stuff seems to work well...... dries pretty much as fish oil does and can be over-painted with enamel primer/topcoat once it goes dry enough ... happy so far.
Bought my can from Bodyshop Auto Paint supplies in Bayswater (Vic)... $52.00
frats,
Rosco