1972 Alumacraft F-9 Lake Master

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MN Fisher
Posts: 216
Joined: 22 Sep 2021, 09:35
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Location: Mound, MN

1972 Alumacraft F-9 Lake Master

Post by MN Fisher »

LDUBS wrote: 28 Jan 2022, 15:40 Progress sure looks good. The way you have it looks like the pour-in is along the sides and leave the middle open? Makes sense to me.
If you look at the stern end of the floor framing, you'll see where I'm leaving open. The center channel for both water drainage and routing of electrical lines and the livewell tubing.

The areas covered at the stern and bow ends by Styrofoam will be filled in. I'm pouring from 'the top' so I don't get an air-pocket underneath the Styrofoam. If it doesn't quite fill in towards the center, I can always do more pours.

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LDUBS
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1972 Alumacraft F-9 Lake Master

Post by LDUBS »

Aw, I see what you mean now. Leaving that center part open is a great idea. I sure looks like you will have positive floatation.
Have Rod - Will Fish

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MN Fisher
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1972 Alumacraft F-9 Lake Master

Post by MN Fisher »

Weather to do the pour foam has been a bear - winter in Minnesota don'tcha know. Even with the propane heater, have to wait for 30+ degree days to do it.

BUT

Today it hit 43 outside - temp in the garage was 72 with the heater running...and I finished the pour-foam in the floor sub-frame. A little cleanup, collect my order from Coremark and I can start building the super-structure.
20220220_161223-1.jpg
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MN Fisher
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1972 Alumacraft F-9 Lake Master

Post by MN Fisher »

Got a good start on the main framing today. Aft-most risers and cross-member, 3 sides of the livewell and the starboard-side main hull support.
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I'm using brazer head drive rivets for the hull supports...they'll be sealed and painted over despite being well above the waterline.
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20220301_171417-1.jpg
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MN Fisher
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1972 Alumacraft F-9 Lake Master

Post by MN Fisher »

More work today - probably another day's work to finish framing the rear section before moving to the casting deck and TM 'deck'.
20220302_161130-1.jpg
Also finished the connections for the livewell plumbing.
20220302_161145-1.jpg
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MN Fisher
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1972 Alumacraft F-9 Lake Master

Post by MN Fisher »

Couple things in the last few days

Rear framing is done - including the supports for the seat base...going with the same setup in the rear as I had in the canoe.

I also laid in two lengths of 1/16" FRP to make a smooth bottom - especially on the port where the rod locker is going...not going to have tubes, just lay the rods in...it's 8' long from the stern-most end to the bow-most end...just have to finish framing the area in the bow. The FRP will be screwed into the metal braces that go from the subfloor frame to the rib ends and a bead of adhesive will seal the top edge to the hull to prevent water flowing in under it.

Front framing has started - right up in the bow are the main supports for the new battery tray, couple of the uprights for the casting deck are in. Once I get at least another pair of verticals in I can mount the P/S hull supports for the deck.
20220306_152704.jpg

Before I do more verticals though, I have to at least frame up the storage compartments...these are going to be drop-in units lined with 1/4" HDPE on the bottom and 1/16" FRP on the sides. Need these built next as the framing for the deck needs to be spaced properly for these to fit in. Sized to vertically fit 8-3701 boxes - or any combo of 3700 series boxes not more than an 11.1" 'stack' - 1-3700 plus 6-3701 as an example - space is 11.125" and 8-3701 boxes total 11.04"...slight extra so the boxes aren't tight in the compartment.
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One is done - need to make five more before the deck framing can continue. I'm making them this size instead of fewer/larger as the 5/8" BCX I'll be using as the decking can support a person over this span...but not much larger...so the hatch-lids will be walk-upon safe.
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MN Fisher
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1972 Alumacraft F-9 Lake Master

Post by MN Fisher »

Okay - so I lied...really only needed one more dry-box framed before I could work more on the front-deck framing. Slowly coming together - got the casting deck starboard main support in...probably work on the port-side tomorrow...after I finish bending the tabs down level on the starboard support.

The two dry-box frames are just sitting in there, still have to get cross-members to fully support them. One box has it's base cut and inserted.
20220310_163905.jpg
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LDUBS
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1972 Alumacraft F-9 Lake Master

Post by LDUBS »

Well done MN Fisher. Sure looks ship shape to me.
Have Rod - Will Fish

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MN Fisher
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1972 Alumacraft F-9 Lake Master

Post by MN Fisher »

LDUBS wrote: 10 Mar 2022, 21:32 Well done MN Fisher. Sure looks ship shape to me.
Well, not quite ready to go on the water - but getting there. :)

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Kismet
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1972 Alumacraft F-9 Lake Master

Post by Kismet »

Your construction and welding skills are outstanding!

Beautifully, meticulously done.

A pleasure to view. =D> =D> =D>
Kis
Enjoy every sandwich

1955 Alumacraft Model A
https://www.tinboats.net/forum/viewtopi ... 08&start=0
1959 Alumacraft Model F
https://www.tinboats.net/forum/viewtopi ... =3&t=25386
1980 Alumacraft Model F7, 1955-56? Johnson 10hp
viewtopic.php?f=4&t=35326
1956 Alumacraft Model RB
https://www.tinboats.net/forum/viewtopi ... =3&t=39249

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MN Fisher
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Location: Mound, MN

1972 Alumacraft F-9 Lake Master

Post by MN Fisher »

@Kismet - no welding...it's all rivets.

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MN Fisher
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1972 Alumacraft F-9 Lake Master

Post by MN Fisher »

Wife is suffering a migraine, so did fairly quiet things today...otherwise I would have been doing 'bang-bang' as I set some more drive-rivets...and the back end of the garage is directly under the bedroom.



Rear light post-socket is installed - made a template, marked where I wanted to drill the 1-1/4" hole, drilled that, then with the socket clamped in place marked the holes for the mounting screws with a transfer punch, drilled and tapped for #6-32, and installed with some Blue Loctite - only had 2 screws sitting around, need a third.
20220327_161454-1.jpg

Made a template and cut out some 1/4" FRP to make the stern wall of the rod-locker. Epoxy is setting now which is why the clamps. Will fill the gap by the hull with some latex caulk.
20220327_161510-1.jpg

The cross supports for both the battery tray and the TM deck are in...my miter-saw is at the other end of the basement so not an extreme amount of noise gets to the bedroom. The cardboard is the completed template for the TM deck...the template for the battery tray is also done.
20220327_161551-1.jpg

And lastly, the dry boxes are done. The FRP is epoxied to the frame and a bead of latex caulk seals all the interior join-points.
20220327_161721-1.jpg


Still have to finish securing the main side-support runs to the hull (reason for 'bang-bang'), put in a few more lengths of 1x1 angle...then run the wiring where it needs to go before making templates and cutting/fitting the deck sections.
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poorthang
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Joined: 05 Feb 2022, 05:12
Location: brockwell, ar

1972 Alumacraft F-9 Lake Master

Post by poorthang »

dude! you should get out more!

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MN Fisher
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Location: Mound, MN

1972 Alumacraft F-9 Lake Master

Post by MN Fisher »

WHERE?

Lakes are still frozen here...and we're having lows in the teens and highs in the 30s lately.

poorthang
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Joined: 05 Feb 2022, 05:12
Location: brockwell, ar

1972 Alumacraft F-9 Lake Master

Post by poorthang »

frozen lakes? wow, i think i would get a new hobby! lol. how many months can yall fish up there? one thing about it, with your skills, you sure wont have to work on the boat next year! great job!