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Dumas 36" Chris-Craft Runabout Build

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Old 10-14-2011, 05:46 AM
  #26
Check6
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Default RE: Dumas 36

Ok guys,
I have coated the inside of the hull with a nice coat of epoxy resin before I do any cockpit work. Just makes it easier to waterproof everything before it gets closed up. I use Envirotex Lite epoxy, works great for glass cloth and sealing.
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Old 10-14-2011, 06:00 AM
  #27
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Default RE: Dumas 36

Fred,

Noticed that you have a new follower/admirer over on the Lobster Boat build.

Great work on the runabout. Maybe it is easier than I thought?

Bob
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Old 10-14-2011, 02:18 PM
  #28
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Default RE: Dumas 36

Never heard of that epoxy before. But now that I have I am interested in trying it.

http://eti-usa.com/envirotex-lite/
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Old 10-14-2011, 03:02 PM
  #29
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Default RE: Dumas 36

Hi Bob,
Glad to see you checked in. I say go for the build.
Tom,
I've been using this for years. Great stuff.
Thanks,
Fred
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Old 10-17-2011, 10:51 AM
  #30
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Default RE: Dumas 36

Framework for the cabin area installed as well as the forward sheeting on the hull.
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Old 10-17-2011, 01:51 PM
  #31
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Default RE: Dumas 36

Cabin sides installed, floor is placed in but not glued. This is removable to access radio gear. Bottom kick panel installed.
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Old 10-17-2011, 02:01 PM
  #32
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Default RE: Dumas 36

looking good . What are you going to power it with?
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Old 10-21-2011, 05:39 AM
  #33
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Default RE: Dumas 36

Fred, a 540 can would be good. I have a Traxxas (stinger) in my sterling century,runs good Larry
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Old 10-21-2011, 04:25 PM
  #34
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Default RE: Dumas 36

Guys,
I have a 550 Goldfire airplane motor. Will this work?
Thanks,
Fred
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Old 10-21-2011, 06:34 PM
  #35
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Default RE: Dumas 36

Do you know how many turn's it is?
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Old 10-21-2011, 06:51 PM
  #36
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Default RE: Dumas 36

No, I don't. How do you determine that?
Thanks,
Fred
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Old 10-21-2011, 09:20 PM
  #37
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Default RE: Dumas 36

Some motor's tell u on the side. not sure on your's since it's for a plane.
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Old 10-22-2011, 03:17 AM
  #38
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Default RE: Dumas 36

I found the following information on the "Goldfire 550 Motor":

Great Planes S-600 7.2-8.4 Volt Ferrite Motor
Former Goldfire Motor 05 (550)
Windings: 19 turns of .80mm wire. Timing: + 3 degrees Resistance: .37 ohms
No Load
7.2V - 19,140 RPM
8.4V - 21,960 RPM
Shaft Diameter: 3.17mm (.126") Free Shaft Length: 10.2mm (.408") Case Diameter: 37.0mm (1.48") w/flux ring 35.5mm (1.42") w/o ring Case Length: 56.8mm (2.27") 550 size can Weight: 215g (7.5 oz) Bronze bushings Closed end bell
Epoxied balanced rotor Flux ring for increased power
Boat this motor is in: Kyosho WaveChopper

Information found at this link: http://www.wopba.com/motors.htm

Hope this helps.

Bob
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Old 10-22-2011, 08:42 AM
  #39
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Default RE: Dumas 36

From the Moto-Calc tables:

Great Planes GoldFire
2441
2.000
0.0940
7.60

This means 2440 RPM per volt, and 2A current per volt. It's a "hot" motor. If you use it, start out with a small prop. And an ESC rated at least 30A continuous.
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Old 10-22-2011, 10:55 AM
  #40
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Default RE: Dumas 36

Hi All,
Thanks for all the info on motors. I probably will be selling this when I'm finished. If you are interested email or PM me and we can discuss price. I will also install your motor. These frame works are used to form the bend in the hatch tops. I made the bends by wetting the hatch tops and using an old steam iron to heat and bend the hatches. Works great and you can make the bends in 5 mins. instead of waiting overnight to conform to the forming frames. Hatches are rough fitted.
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Old 10-23-2011, 03:43 AM
  #41
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Default RE: Dumas 36

Fred, if you don't use that motor,I would be interested in it. I have some more of the smaller motors. Larry
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Old 10-25-2011, 06:14 PM
  #42
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Default RE: Dumas 36

OK guys,
I have planked the motor hatch with mahogany strips with ABS plastic trim pieces between them.
I had to even out the hatch planking, wasn't happy with the uneven planking at the end.
Looks a lot better now.
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Old 10-26-2011, 07:46 AM
  #43
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Default RE: Dumas 36

Oops.
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Old 10-26-2011, 07:57 AM
  #44
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Default RE: Dumas 36

Fred,

The hatch looks great after you evened it out. Question; what did you do? I compared the before and after photos side by side and other than reshaping the left side to match the right side I didn't see any other planks replaced. I know I usually start in the center and it works out right (pic. Dumas 36" C-C Commander). I'd like to know what to do when it doesn't come out right.

Also, is that .020 thick ABS?

Thanks,

Bob
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Old 10-26-2011, 10:10 AM
  #45
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Default RE: Dumas 36

Hi Bob,
I trimmed the left plank to match the right one. Had to cut the hatch to match the trimmed plank. I then filled in the space in the hatch area so everything would match. Worked great. Starting the rear hatch, done the same way. Glue in the center piece centered on the hatch, then alternate the planks going out to the edge. I'm using the plastic that was in the kit. Don't know the thickness.
Back hatch is now complete. Will start the planking on the hull next.
Thanks,
Fred
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Old 10-27-2011, 11:04 AM
  #46
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Default RE: Dumas 36

Got the hull planked with 1/2 in. mahogany strips. Start at the keel bottom and work your way out. When finished start at the chine rail and work up to the top of the deck. Goes pretty quickly with CA and accelarator. When finished needs a good sanding.
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Old 10-27-2011, 01:45 PM
  #47
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Default RE: Dumas 36

Transom installed. Port side of hull finished planking. Hull needs a good sanding now.
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Old 10-27-2011, 06:02 PM
  #48
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Default RE: Dumas 36

Ah ha, now I see it.  Wasn't looking outside the box.  Duh.
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Old 10-27-2011, 07:38 PM
  #49
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Default RE: Dumas 36

Impressive keep up the good work.
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Old 10-28-2011, 06:14 AM
  #50
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Default RE: Dumas 36

I really appreciate your workmanship and especially all the pictures. An exceptional build forum.

Bob
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