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Old Jan 24, 2013, 07:51 PM
P31
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Quote:
Originally Posted by JimClark View Post
.150 and .180 .180 is too small for you maybe even .180 you might have to go to .250
Would the 250 be 1/4 inch. I have this cable, but they dont make a coupler, 8mm motor shaft, to this size cable. I guess I could make my own.
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Old Jan 24, 2013, 08:28 PM
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yes .250 is 1/4

Octura makes one i am not sure that the .187 might not work also
http://www.offshoreelectrics.com/pro...oct-ocfhe8mm25
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Old Jan 24, 2013, 09:49 PM
P31
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Thank you, I'll leave you alone now.
Gary
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Old Jan 27, 2013, 02:44 PM
P31
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Progress on my Miss Bardhal. got her all framed up started the planking, I know that most of you do it all in one sheet, but I like this method better. It seems to work better for the big guy's. Roughed in the shaft and strut. Porp. is not the one I'm going to use, just there for setting up.
Motor and Batteries are on there way. (I just love Hobbyking's shipping, what a joke, they have a warehouse not more than 10 miles from me Sheees) I will post Pic's when I get them in.
Gary
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Old Jan 28, 2013, 10:28 PM
P31
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I'm getting ready to install the rudder, Should the rudder be offset or directly behind the prop. It seems to me that the intake on the rudder blade should be on the propwash side, any comments.
Gary
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Old Jan 28, 2013, 10:30 PM
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offset for sure for the decking are you going to shape it by sanding then fiberglass it?
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Old Jan 28, 2013, 10:41 PM
P31
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Yes it's a double plank haring bone in opposite directions,( you dont have to fight those sharp curves) and then light glass and Epoxy resin, I have used this on all my Chri Craft very strong. I thought the rudder would be put on that way, but thought I would ask to make sure. Thanks Jim

Just a note only the top portion is done this way, everything else is sheet ply
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Last edited by P31; Jan 28, 2013 at 10:47 PM. Reason: add text
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Old Jan 28, 2013, 11:25 PM
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Looks COOL !

Great driver figure, where did you get him ?
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Old Jan 28, 2013, 11:38 PM
P31
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Hey Tim are you taking a break from the saw dust.
Thats Capt Shag Nasty, he's going to pilot this monster.
I got him at a swap meet the uniform on line, helmit is not done yet
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Old Jan 30, 2013, 04:10 PM
P31
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I got the Motor today, very nice product. It's big and I'm sure it's going to push this baby good (not for a longtime but good) I will have to Modify the mount though, the angle is way to steep. Here's some Pic's
Gary
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Old Feb 01, 2013, 01:24 AM
P31
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Well It's obviouse no one realy care's what I'm putting out here, but maybe someone will see what a very large motor it takes to push a 1/8 scale thunder boat.
gary
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Old Feb 06, 2013, 10:15 AM
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Seattle
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Looks good. Your motor is forward of where I put mine, but with the larger motor I think it might be about right. Just make sure the balance point with batteries and so forth is somewhere, maybe an inch, behind the back edge of the sponson.

I see you are going with a more modern style turn fin, but the original boats would only have a small tab along the inside of the sponson.
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Old Feb 06, 2013, 01:30 PM
P31
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Thank you for your input, I'm kinda doing this on my own by reading what you guy's put out there. I thought that that fin was a bit too big, I'm not going to race the boat so I don't even know if I'll need one. I was also wondering about where the balance point would be, someone said about 30% but I dident get from which end, Bow or transom. I was going to put the motor a little further back but then I would have had to bend the tube. Now it's a straight shot.
Any help welcomed
gary
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Old Feb 06, 2013, 02:30 PM
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That motor looks HOT !
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Old Feb 06, 2013, 03:02 PM
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The motor location could work out fine, but it might be that the batteries are installed more toward the transom. I was thinking that the angle on the drive shaft was angled down a bit more than might be necessary, and maybe a bit deeper than desired.

You might check that the rear flat bottomed section of the hull is basically level to a table when the boat is sitting on the end of the strut ( with no prop) and the back (ride surfaces) of the sponsons. That might be a good starting point for the depth of the strut.

The CG does need to be behind the back of the sponson, and I would guess between 1 and 3 inches. Since the batteries are the main movable weight it is a good idea to plan for a range of motion for battery location that you can use to tweak the CG in that range.

For my skid fin, I just cut some an aluminum plate, about 3" long and 2" deep with a bit of a taper on the leading edge and then screwed that into the inside edge of the sponson. It sticks down about an inch below the ride surface. Since my 1/10th scale runs counter-clockwise, it is on the left sponson. I checked but it does not look like I ever took a picture of it when building the Hallmark Homes, but I do have a picture of the real boat where you can just make out the fin. The boats hardly had any fin at all, but even if you are not racing I think you want a little something there.
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