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Old Mar 05, 2012, 06:42 PM
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kingsflyer it looks like your Crockett has the standard Dumas props and shafts.The Crockett I built used the 6volt Dumas Pittman motors, direct drive with these same props. On two 7.2 1500 NiCad packs mine would run for 1/2 hour to 45 minutes. Speed was good. Our club president at the time tried to hard time me about it being too fast. I quoted the specs for the Asheville class and he was then satisfied I was running "scale".

I sold mine about 15 years ago and I sometimes miss it. Then I remember always banging the wall with the transom carrying it up from the basement to the car. It was a very fun model to run. I had a Ace Nautical Commander radio with the twin throttle sticks. She would do a pirouette just with the throttles. Twin throttle is the way to go in this boat, no question.

I would suggest a tether to the superstructure. I made a double hook on one of the hull frame cross members and used a rubber band to hold the SS down by one of its cross members. I once rolled the superstructure off at a show acting like a dummy. Fortunately we were operating in a pool, not a pond.
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Old Mar 05, 2012, 08:43 PM
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I had to laugh at your comment about banging the walls with the transom, I've gotten a little drydock rash myself putting it in and out of my truck.

I was wondering about the dual throttle control option. My Crockett heals pretty bad in a hard turn. Right now I have the port motor rotating clockwise looking from the transom and the starboard motor rotating counter-clockwise. That is just the way they were wired when I got the boat. How did you have yours set up?

As for the wayward superstructure, if you look closely at the side view picture, the white circle midships on the superstructure is a 1/4-20 nylon bolt that holds the superstructure solidly to the deck.

As for the scale speed, it was my understanding that the PG boats had both turbine and diesel power. The turbine was there for really high speed operation on the rivers.

McD
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Old Mar 05, 2012, 10:17 PM
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I had independent throttle for each motor. The Nautical Commander was a five channel radio. I used two Vantec RET 41 ESCs. Now days I would use Mtroniks Viper Marine ESCs. The Asheville class would do 40+ kts on the gas turbine, 16 kts diesel. I heard they would accelerate from 0 to 40kts in 60 seconds. Not bad for a 225 ton ship. If I were ever to do another one I'd use a fiberglass hull (somebody makes one I just don't recall who at the moment). I would build it as PG 101 USS Green Bay. Half of the Ashevilles were built at Peterson Builders in Sturgeon Bay Wisconsin and the other half t Tacoma Shipbuilding in Washington State. My brother was on USS America in 1969 in the Med. The only escort he ever saw was USS Defiance PG 95.

With the stock Dumas setup the top speed was close to scale. One trick I had on my Crockett was I put a servo under the 40MM mount so I could traverse it.
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Old Mar 05, 2012, 11:50 PM
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Quote:
Originally Posted by Prins Willem View Post
I had independent throttle for each motor. The Nautical Commander was a five channel radio. I used two Vantec RET 41 ESCs. Now days I would use Mtroniks Viper Marine ESCs. The Asheville class would do 40+ kts on the gas turbine, 16 kts diesel. I heard they would accelerate from 0 to 40kts in 60 seconds. Not bad for a 225 ton ship. If I were ever to do another one I'd use a fiberglass hull (somebody makes one I just don't recall who at the moment). I would build it as PG 101 USS Green Bay. Half of the Ashevilles were built at Peterson Builders in Sturgeon Bay Wisconsin and the other half t Tacoma Shipbuilding in Washington State. My brother was on USS America in 1969 in the Med. The only escort he ever saw was USS Defiance PG 95.

With the stock Dumas setup the top speed was close to scale. One trick I had on my Crockett was I put a servo under the 40MM mount so I could traverse it.
i think but not sure........scale shipyard has them in 1/48th and 1/32 scales...

joe
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Old Mar 06, 2012, 12:35 AM
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I always wanted to do one of those boats.

The originals were really awesome as regards performance, but the Navy didn't use them to their full potential in Vietnam or afterward. They were sold off to third world navies, that ran them to death because of poor maintenance. I recall seeing one in Cartegena, Colombia in about 1985, and it looked pretty worn.
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Old Mar 06, 2012, 05:58 AM
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USS Crockett went to the EPA and became R/V Rachel Carson. I talked with a reservist at a show one time. Crockett was here on Lake Michigan before the transfer and he was out on her. The Lake was in one of her moods and Crockett was rolling about 30 degrees. He was going up the ladder when she rolled and he was hanging in space over the water. When she rolled back he said he set a new record climbing the ladder.
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Old Mar 06, 2012, 06:49 AM
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Willem, I'm not sure if it was the Crockett, but one of the boats visited Buffalo in the 1980's. Glenn Staubitz took a series of color slides while she was here, and I inherited them.
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Old Apr 08, 2013, 07:26 PM
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Your boat is looking great. I have just started one of these builds and trying to figure out a power setup to go with. I like the way your boat looks running, but wondering what the dumas motors will do. Did you use the dumas accessory kit for fittings? Lastly any other tips that might help the build go along? Thanks for the build thread.
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Old Apr 08, 2013, 07:49 PM
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plpflyboy welcome to the forum. I was real happy with the Dumas shafts and props. The Dumas Pittman motors aren't cheap but they sip power and have plenty of torque. Also they are very rugged.

The fittings kit has all the detail bits in it so unless you want to scratch build all of it you will need the kit.

I have a couple of suggestions:

When you splice the planks to get the needed length try and leave the glue dry as long as possible. I can't say how many joints broke on me with all the curves on that hull.

If you are going to animate the forward turret cut the bulkheads open for access. IIRC the forward bulkheads are solid.

Lose the 50 cals from the fittings kit. They are way out of scale and weigh a ton. This model hates topside weight and these guns sit high. I stole some twin mounts off a Lindberg PT 109. They weren't too great to look at but they were light and people knew what they were supposed to be.

The material for the railings was piano wire. Getting a good solder joint was an issue. I spent allot of time resoldering railings. Consider Brass. They will bend easier but also will be easier to repair.

From my and Kingsflyer's posts you might gather this isn't the easiest model to move around. When you fiberglass the hull consider an extra layer of cloth near the stern, over the corners. I seemed to always bang the stbd corner of the stern on the wall at the top of the basement stairs. finally managed to crack the transom away from the side. I wound up giving the entire hull a second coat of resin and automotive weight cloth. When I was done the hull could have stopped a .22 long rifle round.

You should do a build log so we can watch your progress.

Enjoy your build.
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Old Apr 08, 2013, 08:09 PM
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Im going to start planking the hull soon. I can tell already its going to be a pain. I will probably stay with the dumas motors and will be getting the fitting kit. As for a build thread I might do one. This is a joint venture between me and my uncle. Looking forward to finishing the build though for my first boat its kinda fun.
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Old Apr 16, 2013, 10:11 PM
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PG88 is loaded up and ready for the trip to SEFF next week. I'm heading to Georgia to fly at SEFF and run my Crockett in Lake Hodges.
McD
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Old Jun 29, 2015, 12:05 PM
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When I built my crocket, I used a motorcycle lead acid, 12v.
I used their 12v motors. As far as rolling around, at first, yes. But I cured that problem with small strips of plastruct angle, glued to the bottom just below the waterline on both sides. Roll control. They were sanded on the edges at the correct angle to the hull. Then the ends were closed with carved pieces of plastic sprue, (I don't throw anything away)
Speed was controlled with the crude but very efficient mechanical Dumas controllers.
Two servos for independent motor control and one for rudders.
She would just fly if I opened her up.
Hours of fun!! Could spend the whole day running hard and no recharge.
Never sank, tipped or acted contrary in any way.
I super detailed by making all the deck hardware myself.
I also made my own motor to shaft couplings, shafts and stuffing tubes.
The decks of navy ships are a darker gray than the hull and superstructure.
They are painted with non skid.

Your Crockett looks great!
Wish I had pics of mine to show. But I built mine in the early 80's!

Dave
Seattle
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Old Jun 29, 2015, 11:11 PM
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I am a Navy vet; most horizontal surfaces of ships are painted 'deck gray,' non-skid (except for flight deck non-skid which a different animal) is darker than that (nearly black, almost like asphalt). Vertical surfaces are painted 'haze gray.'

I used to used the old Humbrol colors for USN ships which matched pretty well.

Another paint you find on some ships is 'deck wash' which is a fifty-fifty mix of deck gray and varnish (and has all the traction of wet ice). But it shines (most navy exterior paint in flat) so it will stay shiny like fresh paint even weeks later (though it wears quickly, and is very very very slick (a safety hazard)). Skippers love it but those who have to work on it (or maintain it) hate deck wash.
Foo
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Old Jun 30, 2015, 04:54 AM
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Hey foo. I too, am a Navy vet.
I did make that sound like the vertical surfaces were painted darker.

Yes, the decks were painted with a darker, non-skid gray, or as foo states, deck gray. All the vertical surfaces of a ship were painted with haze gray.
Also, all colors, even those below the waterline, were flats. Never wanted to sparkle in enemy territory!

Dave
Seattle
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Old Jun 30, 2015, 06:40 PM
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Or this!

Of course you could just . . .
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