British X-Craft Build
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After putting the hull sections together except for the stern section, I noticed one slight fixable problem!
I just need to sand the upper hull section to bring it all into alinement. That will be my project for today!
Rob
"Firemen can stand the heat."
Last edited by rwtdiver; 02-25-2023, 06:04 PM.Comment
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NOTE: The following is MY SOLUTION to a (might be or may not be) POSSIBLE problem!
Today I started the stern section control surfaces installation. To start with if you look at where the shafts go through the stern to connect up the control surfaces, you will see that there is not a lot of solid structure to run a shaft through.
To help reinforce the shaft structure I have installed a 1/8" solid brass rod and CA'd it to the structure itself to help give strength to the structure point.
In order to make the control surfaces operatable I installed a 5/32 brass tube inside the control surfaces and CA'd them to the brass tube. This allowed the control surfaces and the brass tube to slide over the 1/8" solid brass rod which will allow the movement required for the control surface operation.
This fairly simple fix will give more beef to the stern structure and also offer good movement to the rudder and the stern dive plane.
Rob
"Firemen can stand the heat."Comment
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This was my first stern! While drilling out for the possible use of 5/32" brass tubing for the bushing, the tips broke off!!
Rob
"Firemen can stand the heat."
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Thank you for your idea! That looks like it would certainly help add support to the shaft post. I already have the system I designed already in place and glued in so I will go with it and we will see what happens. Sometimes I have a tendency to go a little overboard and it may not be necessary.
Rob
"Firemen can stand the heat."Comment
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Rob et all,
Going with 1/8" control surface shafts is pretty typical, but overkill in a lot of cases. That area of the stern is very thin and very prone to breakage due to the printing orientation. A common issue with a lot of 3D models I've put together. Going with a 1/16" control shaft linkage and a 3/32" OD bushing will help keep meat in that mounting point.
BobComment
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Rob et all,
Going with 1/8" control surface shafts is pretty typical, but overkill in a lot of cases. That area of the stern is very thin and very prone to breakage due to the printing orientation. A common issue with a lot of 3D models I've put together. Going with a 1/16" control shaft linkage and a 3/32" OD bushing will help keep meat in that mounting point.
Bob
I have the electronics all laid out to fit into an approximate 9.5" long 2.5" acrylic tube for the WTC. Because of the space available I will be using a 7.4 V 2S 2200 MAH lipo battery pack. Same battery that I use in my 1:77 scale Nautilus, which work's great. The largest prop that will fit between the dive plane shaft and the drive shaft exit is a 33 mm 3 bladed prop.
Rob
"Firemen can stand the heat"
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For those that might be considering this build, I have a suggestion.
Do not use this design for the stern dive plane! (This part came with the 3D print files) To mechanical and not necessary!
A Straight shot to the dive plane is more positive and cleaner! I fabricated the part using TinkerCad.Just a suggestion!
Rob
"Firemen can stand the heat."
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Not to be disrespectful of you, Daivid Merriman lll, Bob Martin, and others that I put into the category of perfectionitis, and I do hold you all in very high regard! But I do not fit into that group, nor do I want to. All my boats are 3D printed (total 24) except for 2 which are kits that I purchased from Bob Martin (Nautilus Drydocks) All my boats have WTC's, some work & some don't! I got into this hobby not for the realism, but for the joy of building and experimentation.
I just want to build the British X-Craft and for the joy of building it and maybe pass on some other ideas and methods of building it. If it looks reasonably close to scale, then I will be happy!
My last comment on this subject is, I do have health issues which dictate what I can do and can't do, and I just want to leave it at that!
Andreas, Thank you for chiming in and offering your respected advice as always!
Rob
"Firemen can stand the heat."Last edited by rwtdiver; 03-13-2023, 03:53 AM.Comment
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