Courbet Class (IRCWCC)

Discussion in 'Warship Builds' started by Kevin P., Jul 22, 2018.

  1. Kevin P.

    Kevin P. Well-Known Member

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    While others were getting their keystrokes in I decided to keep building, whoops

    Painted deck and turrets
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    Pulled tape
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    Stole an idea from Charley, printed a holder thing for the BC integrated board. It will serve as the barrier to hold epoxy for potting the board, little tab can be used as an anchor point to hole board in place with a through-hull bolt
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    Depth to settle just below edge of xt-30s
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    I’ll see how it turns out
     
    Last edited: Mar 3, 2019
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  2. Kevin P.

    Kevin P. Well-Known Member

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    Bit of work today
    Here is potential board placement, bit tight but should work
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    Post painting. Hey will, is it just me or is something missing in the middle there?
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    With some better lighting, barrels in with o rings this time
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    Finally put the brass tubes in the turrets, overall the printed turrets came out alright, maybe slightly less work then my normal fiberglass ones
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    Time to start electrical, cut leads for 12 motors (or maybe 16)
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    Potted the first two boards. I did this before successfully with the cruiser boards so I skipped the op check before, spread between all connectors with some persuasion (needle), fan for cooling
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    Printed the last two holders. Moving forward with electrical, component prep/install this week
     
    Last edited: Mar 4, 2019
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  3. ZARUBA1987

    ZARUBA1987 Well-Known Member

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    Man those BC board mounts are nice!!! I wish they came potted from BC with the mounts. I’ve trolled a bunch of your build post. Your a hell of a craftsman!!!!What epoxy do you use for potting the boards?
     
  4. Kevin P.

    Kevin P. Well-Known Member

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    Thanks. I use west systems for everything, including potting. Just be sure to use a long cure time epoxy (5-8 hours or so). I’ve built a good number of boats over the past few years, allows iterative improvements in each build, taking ideas I pick up pondside and things that worked best on the previous builds.
     
  5. Kevin P.

    Kevin P. Well-Known Member

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    Boards came out good
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  6. Kevin P.

    Kevin P. Well-Known Member

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    Focused on Agincourt today, ran hoses for guns on hull 1 last night. Standard setup used on many hulls with a good track record
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  7. Litch42f

    Litch42f Well-Known Member

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    Do you use the 206 or 209 hardener for potting?
     
  8. Kevin P.

    Kevin P. Well-Known Member

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    205 historically, but I have a lot of 206 to burn through after cleaning out my dad’s old supply
     
  9. Litch42f

    Litch42f Well-Known Member

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    Thanks Kevin, although I’m surprised you said 205 since I’ve found that my left over 205/105 gets awfully hot at only 1/4” deep. I did notice you had a fan going and maybe it’s not as deep and more spread out when potting those Multi-Bs?I know someone had essentially ruined a Multi board with an epoxy that set too quick and created too much heat, causing some component on the board to fail, hence why you mentioned slow-set epoxy. Build is looking good!
     
  10. Kevin P.

    Kevin P. Well-Known Member

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    Yes I’d say speed is relative, the 6-8 hour cure time for 205 falls in the slow category. Heat is a known risk, I’m working in a low ambient room now that’s probably 50-60F, so the heat risk as a lot less than summertime when it can be over 80. I actually used the heat gun in the cup to lower the viscosity a bit to help get it between all connections. Fan is one strategy, I’ve heard of using heat sinks (metal plate under, water bath), also use of refrigerator.

    I worked on wiring this weekend, two boats worth of stuff takes a bit
    Here are my complex wiring harnesses, the BC board makes things really simple
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    Showing correct plugs on the hobbywing ESC, F/R and Nihm voltage cutoff
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    Got motors in hull 1. Kind of cluttered in this one area, but a lot less wiring than my typical boats
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    Just a simple plug in for battery
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    Added leads to solenoids. Only thing remaining is test switches for duals, trying to find the right spot to place them, planning for under the deck step, maybe outboard of the battery
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    Boat is getting there, will be on hold for a bit with the Brouhaha coming up (hate when battling gets in the way of typing)
     
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  11. Kevin P.

    Kevin P. Well-Known Member

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    Picked up the superstructure, thanks Caleb and Will
    Here are a few pictures of Steve’s
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    I did some very rough test fitting today
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    Tripod will be a treat, started to see how it goes together
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    On pause for a bit for brouhaha
     
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  12. Beaver

    Beaver 2020 Rookie of the Year Admiral (Supporter)

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    Heads up before you glue that all together, Kevin, that drumstick shaped piece behind the funnel should be flipped end for end.
    Here's a reference image.
    Courbet SS Current.jpg
     
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  13. Commodore

    Commodore Well-Known Member

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    Nifty - you guys using ABS to print with?
     
  14. bsgkid117

    bsgkid117 Vendor

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    I've been using PETG for the Courbet superstructure. Easier to print than ABS, stronger than PLA, very slightly flexible. So far seems to be doing the job well.
     
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  15. ZARUBA1987

    ZARUBA1987 Well-Known Member

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    You must of took off as soon as the brouhaha was over. I have unanswered questions for the gun whisperer lol. Kevin where do you hook the 1/16 tube for the back feed connection on the elbow?
     
  16. Kevin P.

    Kevin P. Well-Known Member

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    Yeah, I had to get back by Monday night so I left from the pond

    You can sort of see the routing here in a few posts above:
    https://rcwarshipcombat.com/threads/courbet-class-ircwcc.445696/page-11#post-527206

    I route 1 hose from solenoid to bottom of T in the middle (I try to place one hole closer to center of cap to align with piston hole, one to side). I take the other hose that attaches to the cap and run it to a T fitting (I solder them as shown in earlier posts since I make a lot of guns and clippard fittings add up in price). The other two hose from the T fitting go to the end of the mag and to the breech elbow. This style gun has worked consistently for me on the last several builds. Guns in the Agincourt have had no adjustment since initial construction.

    To steal Bob's work, it looks like he adds the extra hose connections to the gun T (shown near the bottom of the page). His guns are better than mine haha
    http://www.portpolarbear.com/reports/Inside the USS Washington.htm

    Back in 2012 I did some testing with various combinations of hose routing, the setup I use yielded the highest feet per second and consistent single shots. I've been meaning to repeat the testing with a few other ideas now that I have a good chrono that works well with BBs, I just haven't got around to it yet.
     
  17. ZARUBA1987

    ZARUBA1987 Well-Known Member

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    Thanks ! I picked up some Great info at the battle I’m going to put it to work
     
  18. ZARUBA1987

    ZARUBA1987 Well-Known Member

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    Kevin I know you done your homework on your expansion tanks. If you don’t mind send me the part # you used to build those
     
  19. ZARUBA1987

    ZARUBA1987 Well-Known Member

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    Hey kevin I got the parts put together there website is well put together. Last time I used Clippard I recall there website being hard to navigate. Lol all good
     
  20. Kevin P.

    Kevin P. Well-Known Member

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    Back into this build after a couple weeks off for the battle last weekend
    Worked on superstructure prep and test fitting, only a few mods required to get it all to fit
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    Cut the tripod down to size
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    Starboard
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    A cool looking boat, Will and Caleb did a great job cleaning up the 3d files and printing
    Next will be to prep the SS for the other hull, then paint them both, then assemble and install
     
    Last edited: Mar 31, 2019
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