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Re: BPDMS part
Posted by Ralph Wood on January 25, 2020, 16:01:37, in reply to "BPDMS part
It just happens that when I went to snip the sprue for his parts, I paused and asked myself if I was really going for the BPDMS, or was I aiming at an ASROC by mistake? In that scale, a careless moment can generate that mistake. (Especially with Skywave parts, as you note. Their details are "basic.") I confirmed in my mind that I had already used the ASROC from that sprue, so this "had to be" the BPDMS. Also noted the gaps at the ends. Happily snipped and sent. Then read your post. See, I'm not all that certain myself...I need to think it out, too. It isn't reflexive. So, "my worst fears" had just come true! I sent an ASROC after all! Some profanity, and a mad pawing at the boxes with my parts. Also consulted the instructions. Then looked up photos. Oh, "the drama," lol. No harm, though. My doctor wants more "heart pounding" activity from me.
Thank you for keeping me "physically fit," Rick.
That is a wonderful close up view of the BPDMS launcher. And it shows why we are transitioning to nicer 3D printed parts. The Skywave part has that boring pedestal but that photo shows a much more elaborate base and mount. So many standard parts have been re-done in 3D now that most of the Skywave parts sets are really too simple. But as far as I know, that Skywave part is as good as it gets in 1/700 scale.
And yes, I had completely forgotten that the BPDMS has gaps by the two outer cell pairs.
Thanks for keeping me honest, Ralph.
"And while the ASROC has a visible narrow gap between the four cells to the right and the four to the left, the BPDMS is a solid block of eight cells."
Thought I had mailed him the wrong part! Just got done ripping up my spare parts stash, and then looking photos up online. Whew!...Other way around, Rick. (Sent him the correct part after all.) Now, we wait for my heart rate to come back down, and pack my hobby room all back together.
ASROC. Solid block of eight cells: https://commons.m.wikimedia.org/wiki/File:ASROC_launcher_USS_Columbus_1962.jpg#mw-jump-to-license
BPDMS. Space between each end unit: http://www.seaforces.org/wpnsys/SURFACE/Mk-25-launcher_DAT/Mk-25-missile-launcher-009.jpg
For what it's worth, there is only one mark of BPDMS (pronounced "Bee pa dee mis", but known by its style - "Shoot the 5" gun until the target is within BPDMS range, then stop with the gun so our bullets don't shoot down our missile", followed by an almighty eye-roll.) If it is a shipboard BPDMS, it is a Mk 25.
It seems to look a lot like an ASROC launcher, or the Nato Sea Sparrow that Ralph mentions, but the BPDMS is smaller than the ASROC. the BPDMS stands on a pedestal-looking thing, while the ASROC has a big strong framework as its base. And while the ASROC has a visible narrow gap between the four cells to the right and the four to the left, the BPDMS is a solid block of eight cells. And the Nato Sea Sparrow has a very wide gap down the middle.
I provide all this descriptive stuff so that you might find you already have a BPDMS in your parts box.
What are you building? In my case, I need that for the AFV Club Knox class kit, as the Knox I served on never was upgraded to CIWS or Sea Sparrow. And the former USS Stein is now in the Mexican navy, still with that darned BPDMS system.
Does anyone know what Mk the BPMDS in the Skywave Weapon set?8 Need one 1 1:700 Mk 25 BPMDS. Will be willing to pay. TIA
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