Little Ferdie - 11-ft Grumman

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Re: Little Ferdie - 11-ft Grumman

Postby greygoos » Tue Jun 19, 2018 8:40 pm

And I used my Kreg jig again to drill pocket holes in the spars. Here's a weird thing: it was freakishly difficult to drill those pocket holes. The drill just did not want to penetrate the wood. I had to lean into it to push it in and kept having to pause to let everything cool down. I've used the kreg jig a lot, and it's never been this reluctant.

Theories: Sounds like the bit is fried or possibly the jig itself is not set to the proper thickness.
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Re: Little Ferdie - 11-ft Grumman

Postby plectrudis » Thu Jun 21, 2018 9:25 pm

Thanks, Jim. I suspect you're right. It's not the thickness--I measured the wood and consulted the chart that comes with the tool. Time for a new bit.
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Re: Little Ferdie - 11-ft Grumman

Postby KCStudly » Fri Jun 22, 2018 6:53 am

Not to assume anything... in fact, I bet you are already aware of this and use the technique, but one way to extend the life of any drill bit when drilling moderate to deep holes is to clean the chips out often (i.e. pull the drill bit out of the hole or jig frequently to drag the chips out and unclog the bit. Wiping the bit clean with a rag frequently also helps cool it. Even though the Kregg jig has exhaust holes to help the chips exit, it can still get clogged up, which generates and holds more heat.

Another technique that works especially well when drilling thinner hard materials... especially metals like steel and SS (a little off topic here)... is to pulse the trigger while maintaining pressure; each time the bit stops heat is transferred away from the bit into the base material.
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Re: Little Ferdie - 11-ft Grumman

Postby NorthEGPhoto » Fri Jun 22, 2018 9:21 am

On the Kreg Jig, I had that issue during my build. First time using it (and in fact still not completely satisfied I used the correct screw length or settings at all times, but I used enough glue and screws to fix the titanic so should be fine!) But.. it was all down to the wood chips not properly getting out of the exit hole. to resolve that I just ran the drill in and out while I was drilling to the final depth. worked great.
"In the morning, the light is golden, in the midday 'tis time to nap, and in the evening the light returns. Into the night the stars shine brightly, now if only the moon would stay out of sight." - Some photographer
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Re: Little Ferdie - Get Grounded

Postby plectrudis » Wed Dec 26, 2018 6:54 pm

Over the past couple of months I've acquired my PD4045 and a battery, so I'm ready (mostly) to move on to the final stage of the electrical work: hooking up the juice.

I've spent the past week or so poring over the instructions that came with the PD4045, springdew's installation guide http://www.tnttt.com/viewtopic.php?f=30&t=67143, and this diagram http://www.tnttt.com/download/file.php?id=9796, plus some other wiring diagrams from the forum.

Everything finally makes sense to me, except for two things.

QUESTION ONE
Springdew says, "Run a green wire from the ground buss to the frame." Well, that's simple enough. But some of the diagrams I've seen run a wire from the ground buss to the BATTERY, and then from the battery to the frame.

Is that approact NOT appropriate in this case because the negative terminal will already be hooked up to the PD4045? So I wouldn't need to hook anything else up to the negative terminal, and would instead connect directly to the frame?

QUESTION TWO
What do I do with the neutral wires coming from my light fixtures? The positive wires get connected to the 12 pre-installed wires on the PD4045 that connect to the fuses. But where do the neutral wires connect? The neutral buss bar doesn't have enough holes to accommodate all 12 circuits. Do I need an external buss bar to receive all of those neutral wires? And if so, do I then run 1 wire from this external bar to the neutral bar in the PD4045?

In case you need to refresh your memory, here is a pic of my PD4045, with annotations that are basically an updated version of the diagram above, translated into plectrudis-speak.

Image
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Re: Little Ferdie - I Made Light!

Postby plectrudis » Mon Jan 14, 2019 12:26 am

I hooked up the PD4045, the battery, the grounding block, and one light fixture, and--to my everlasting astonishment--I made light happen!

(Actually, at first it didn't, and I thought, This thing is so complex, I haven't a hope in hell of tracking down the problem. Despair. But then Mr P pointed out that the porch light has a switch on its base, and maybe I should turn that switch on? Clever Mr P.)

Image

This is actually kind of a dry run, just to see if I've actually understood what I was doing so far and that everything is hooked up right. Plus, I need more light inside the trailer as I work on the interior. But I'll probably have to disconnect some of what I've done once the bulkheads and galley shelves are in place. That's okay. If I've gotten it to work once, I can do it again.

Some elements to note:
1. For some reason, the PD instructions said to use the black wire coming from the battery for the NEG terminal, and the "white" for the POS terminal. This is weird on a couple of levels, since the battery itself is color-coded for black = POS, and RED = NEG (there is no white). Mr P suggested that I match the colors to the battery, since it's more standard. So I used black wire for POS and red for NEG.
2. I made a grounding block to receive all the negative wires from the 12v circuits and ran a wire from it to a bolt on the trailer. Then I ran another wire from the bolt on the trailer to the red/NEG post on the battery. Evidently, this is a fine thing to do.
3. I still need to install the battery switch and fuse/breaker.
4. I've wired up the power inlet, but haven't plugged it in yet. So I have yet to test the charging function on the PD. I'll also need to put a switch on the POS wire from the inlet, so I can shut it down, if needed. I'll probably install all the switches first, then turn on the juice.

NEXT STEPS
1. Install the master & battery switches
2. Install the dome lights
3. Install a grounding block for the passenger side circuits
4. Install the luan/ceiling material
5. Install the bulkheads
6. Install the shelves. Or insulate and finish the roof. Either way. No dependencies.
7. Install the fan.
8. Re-hook up the electricity & the rest of the fixtures/receptacles.

Then, at a very high level, hatch and skin.
Then AC unit.

THEN GO CAMPING!
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Re: Little Ferdie - 11-ft Grumman

Postby KCStudly » Mon Jan 14, 2019 4:15 pm

plectrudis wrote:...to my everlasting astonishment--I made light happen!

Sharing in your enthusiasm reminded me of Tom Hanks' character in Castaway when he created fire.

Glad to hear you are over your trepidation doing wiring!

Funny, I've never heard of a battery having red = neg and black = pos. AFAIK it is always the other way around. I think some marine applications use yellow instead of red for pos, but don't quote me on that.
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My Build: The Poet Creek Express Hybrid Foamie

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Engineering the TLAR way - "That Looks About Right"
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