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        Build Log Another 1935 Gar Wood Speedster scratch build!

#1 JayJay76 Sep 21, 2012 04:35 AM

Another 1935 Gar Wood Speedster scratch build!
 
2 Attachment(s)
I'm working on my 4th scratch build, a 32" Gar Wood Speedster. This will be my third scratch model, which was inspired by Ed Crowell's Speedster build log and constructed over the top/side drawings contributed to his thread by frankg.

Because it is kind of a large model (for me at least) and there are a lot of complicated parts, I will CNC cut them from 3mm ply and assemble a 'kit' of parts before I start building.

The first step is to import the drawings into Rhino, and trace the lines needed to form the hull. Then I use a clever tool called "curve from 2 views" which takes the top view of the bow curve, and combines it with the side view of the same curve, to produce an accurate 3D curve. After extracting the hull form curves in this manner I used the fair tool to smooth and refine them resulting in a very clean set of curves from which the hull form is built.

Next, I took a look at the engine hatch and cockpit locations, and determined the number and position of formers to best capture the shape, including one at the widest beam to ensure a smooth shape on the final hull.

Then I used an offset of the outer hull surface to trim the formers, allowing for the 2mm balsa sub-planking. The goal is to meet the outer shape of the hull top and bottom with the sub planking in place, then plank on top of that with 2mm mahogany.

I then constructed the keel and added interlocking slots to ensure alignment of the formers, and added a side former to lock in the alignment and eliminate any twist in the formers relative to the keel.

#2 Ed Crowell Sep 21, 2012 09:19 AM

This is going to be good. Looking forward to your build.

Ed

#3 JayJay76 Sep 21, 2012 09:54 AM

Hi Ed, thanks for stopping by, I have read and re-read your speedster thread, if my finished model looks half as good as yours I'll be happy!

I'm planning to make most of the fitting by hand from brass and then nickel plate them. Its the windshield brackets that worry me, are your windshield brackets available from wet goose? Any idea what they cost?

#4 Ed Crowell Sep 21, 2012 10:43 AM

I know Ken Valk of "Wet Goose Marine" has the mold for the wind shield brackets and he also has the air vents and bow light. Here is Ken's email.

Kenvalk@pacbell.net

If you plan on plating the brass parts your self I would suggest using (copy chrome) instead of nickle. The nickle will tarnish and get dark. The pieces I plated with copy chrome well over a year ago are still bright like the day I plated them.

Ed

#5 woodybob Sep 21, 2012 11:04 AM

Great start!

#6 JayJay76 Sep 21, 2012 11:33 AM

I emailed Ken for a pricelist. I also thought about casting myself, pewter or white metal, then copy chrome. I wonder if they sell that or an equivalent here.

Thanks for popping in Woodybob! The cad modelling is the easy part, its finishing the mahogany that worries me. I have one other planked mahogany boat under my belt and the planking was a breeze and came out awesome, but i did have a few issues with spar varnish, this time i think i will seal and level with west systems and then spray with auto clear coat.

#7 sunworksco Sep 21, 2012 12:02 PM

Is anyone thinking about selling kits.
I would buy one in a heartbeat!
Giovanni

#8 Ed Crowell Sep 21, 2012 12:46 PM

Quote:

Originally Posted by sunworksco (Post 22796060)
Is anyone thinking about selling kits.
I would buy one in a heartbeat!
Giovanni

Check This out.

http://www.legendmodelboats.com/miss_behave.htm

Ed

#9 sunworksco Sep 21, 2012 01:59 PM

Thanks!

#10 JayJay76 Sep 21, 2012 02:13 PM

For any interested scratch-builders, I will be posting my plans here once I know everything fits together, including laser cutting patterns for 3mm ply.

#11 blutoh Sep 21, 2012 02:44 PM

Subscribed!

What took you so long Jason ?!?! ;)

Pete

#12 sunworksco Sep 21, 2012 03:07 PM

I would like to build a 1/4th scale version.
48" length.
Giovanni

#13 JayJay76 Sep 21, 2012 03:43 PM

Thanks for checking in Pete! the cartoon runabout is mostly done, but the cooling intake doesnt work and ive burned two motors trying to sort it out. meanwhile ive started this project!

Hi Giovanni, i will post a set of basic plans with stations you can scale to any size, and ill prepare a set at 48" as pdf for you when i get a chance.

#14 frankg Sep 21, 2012 03:55 PM

:)HEY ED!!! Did you ever finish your speedster? If you did have you had your shake down cruise? It has been awhile since you posted on your speedster thread.
;)

#15 sunworksco Sep 21, 2012 04:22 PM

Thank you!
Kind regards,
Giovanni.


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