https://forum.rc-sub.com/ en Thu, 09 Apr 2026 17:59:06 GMT vBulletin 60 https://forum.rc-sub.com/images/misc/rss.png https://forum.rc-sub.com/ https://forum.rc-sub.com/forum/general-topics/194487-esc-interaction-mtroniks-viper-25-plug-and-play-and-marine-15 Thu, 09 Apr 2026 17:42:41 GMT I looked at the Mtroniks forum thread but seems hardly active, so forgive post here. My submarine repairs, after a sinking, now use two esc as above.... I've seen similar problems before which were solved by the addition of an opto isolator, however having tried one on the pump channel it will not work, I am at a loss to understand why (i.e. no signal).
Can anyone suggest a remedy to either the problem as a whole or the non operating isolator. (Mtroniks).
Thanks.
Paul.]]> GENERAL TOPICS Lupomen https://forum.rc-sub.com/forum/general-topics/194487-esc-interaction-mtroniks-viper-25-plug-and-play-and-marine-15 https://forum.rc-sub.com/forum/the-scrap-yard-buy-sell-here/194441-blueback-for-sale Wed, 08 Apr 2026 03:28:27 GMT Das Boot https://forum.rc-sub.com/forum/the-scrap-yard-buy-sell-here/194441-blueback-for-sale https://forum.rc-sub.com/forum/silly-questions-from-newbies/194425-2-4-ghz-antenna-routing Tue, 07 Apr 2026 02:28:50 GMT I have been on this forum for awhile, learning as much as I can, but this is my first post. I am in the process of putting together a Victoria class...
My question relates to receiver placement and routing of the 2.4 GHz antenna coax. I have an FrSky X18, and a TD R10 receiver. I purchased the 2.4 GHz antenna extension kit from Bob as well. The receiver will only fit in the battery compartment. However, this raises the question of where to route the antenna. If I have it penetrate the forward endcap, then it is easy to route, but causes issues with disassembly of the WTC for post mission and maintenance since the core of the cylinder is attached to the aft endcap. Routing the antenna through the center tube to the aft endcap, I would imagine will cause issues in that it is parallel and in close proximity with the power and servo wires (unless the shielding does a better job than I am expecting). I have seen low frequency radio antennas routed on the outside of the ballast tank, by notching the ballast tank bulkheads, but those antennas were smaller in diameter. Also, not sure if the antenna extension is long enough to reach the aft endcap, forward again sufficiently to reach the top of the sail hidden as a mast or periscope.

I apologize if I have missed posts related to this specific question. I would appreciate any insight.

Thank you.

Tony]]> SILLY QUESTIONS FROM NEWBIES! Surcouf https://forum.rc-sub.com/forum/silly-questions-from-newbies/194425-2-4-ghz-antenna-routing https://forum.rc-sub.com/forum/way-off-topic/194376-nothing-worse-than-a-physicist-stupefied-by-the-obvious Sat, 04 Apr 2026 01:33:00 GMT
This popped into my mind after coming across a post on an FB RC sub group.

The builder has essentially given up, saying it a "disappointment" and "discouraging" because vendors don't stock "oblong shafts" to match his 3D print.


a perfect example of a "CAD-induced" crisis. He designed a hole (or used a file) that assumes a specific, non-standard geometry, and now he's treating a simple mechanical interface like it's a proprietary aerospace component.


This is pretty much a DIY hobby, if the part doesn't exist, you make the part—or better yet, you don't design a hole that requires a unicorn to fill it.

He did the 90% that requires high-tech hardware and software, then got "stupefied" by the 10% that requires a hammer and a file.


​]]> Way Off Topic redboat219 https://forum.rc-sub.com/forum/way-off-topic/194376-nothing-worse-than-a-physicist-stupefied-by-the-obvious https://forum.rc-sub.com/forum/youtube-videos/194364-great-waterproofing-info-must-watch Wed, 01 Apr 2026 14:35:13 GMT https://www.youtube.com/watch?v=ybv1qv0HQHk https://www.youtube.com/watch?v=ybv1qv0HQHk]]> YOUTUBE VIDEOS TuptubBuilder https://forum.rc-sub.com/forum/youtube-videos/194364-great-waterproofing-info-must-watch https://forum.rc-sub.com/forum/way-off-topic/194362-what-if Wed, 01 Apr 2026 09:57:08 GMT What if Spain decided to pursue development of the Isaac Peral and stationed her in Philippines at the start of the Spanish-American War. The battle... What if Spain decided to pursue development of the Isaac Peral and stationed her in Philippines at the start of the Spanish-American War. The battle of Manila Bay could have played out differently. Way Off Topic redboat219 https://forum.rc-sub.com/forum/way-off-topic/194362-what-if https://forum.rc-sub.com/forum/silly-questions-from-newbies/194293-so-i-bought-some-stl-files%E2%80%A6-what-now Thu, 26 Mar 2026 04:14:38 GMT As a Canadian, there is a special place in my heart for the Victoria/Upholder class submarine so I decided to purchase the STL files package from...
I have a number of questions I hope someone here can answer:

1. ​​​​How do I know what size of shaft I should order for the rudder/dive plane linkages? Is there a good way to measure the holes in the model? (The software I’ve got is making it hard to measure directly across the hole, as opposed to diagonally to some point deeper inside.)
2. I’d like to include some bushings to make the linkages friction-free. Do I need to edit the STL file to add the appropriate sized holder for my particular bushings?
3. The product page recommends the 70mm WTC, but should I order it with the two extra servos for the forward dive planes? I really only need one servo since I won’t be implementing any kind of retraction mechanism.
   1. If I did order the WTC with the two extra servos, would they be in the forward compartment or in the back with the other electronics?

]]> SILLY QUESTIONS FROM NEWBIES! Starfarer42 https://forum.rc-sub.com/forum/silly-questions-from-newbies/194293-so-i-bought-some-stl-files%E2%80%A6-what-now https://forum.rc-sub.com/forum/silly-questions-from-newbies/194284-coreless-motors Wed, 25 Mar 2026 05:00:12 GMT Any place in the hobby other than those small ones used in 1/72 scale electric torpedoes? how about as a main propulsion motor on a sub?
Any place in the hobby other than those small ones used in 1/72 scale electric torpedoes? how about as a main propulsion motor on a sub?]]> SILLY QUESTIONS FROM NEWBIES! redboat219 https://forum.rc-sub.com/forum/silly-questions-from-newbies/194284-coreless-motors https://forum.rc-sub.com/forum/general-topics/194262-flatbed-from-abyss Mon, 23 Mar 2026 12:32:58 GMT http://goldenarmor.com/flatbed/?fbclid=IwdGRzaAQtvvJjbGNrBC2-zmV4dG4DYWVtAjExAHNydGMGYXBwX2lkDDM1MDY4NTUzMTcyOA... http://goldenarmor.com/flatbed/?fbclid=IwdGRzaAQtvvJjbGNrBC2-zmV4dG4DYWVtAjExAHNydGMGYXBwX2lkDDM1MDY4NTUzMTcyOA ABHioy5h5XirGS6QWdX9i2yN2f_ppWY3tCqmdch7gyRS8F2lj_ C9H1-9iqzlWw_aem_NmGqGCVdEOmIelUad7Uf6Q]]> GENERAL TOPICS redboat219 https://forum.rc-sub.com/forum/general-topics/194262-flatbed-from-abyss https://forum.rc-sub.com/forum/3d-printing/194257-abyss-flatbed Mon, 23 Mar 2026 06:41:19 GMT http://goldenarmor.com/flatbed/?fbclid=IwdGRzaAQtvvJjbGNrBC2-zmV4dG4DYWVtAjExAHNydGMGYXBwX2lkDDM1MDY4NTUzMTcyOAABHioy5h5XirGS6QWdX9i2yN2f_ppWY3tCqmdch... http://goldenarmor.com/flatbed/?fbcl...EOmIelUad7Uf6Q]]> 3D Printing redboat219 https://forum.rc-sub.com/forum/3d-printing/194257-abyss-flatbed https://forum.rc-sub.com/forum/photos-of-concept-fantasy-or-science-fiction-subs/194228-handmade-stingray-submarine Sat, 21 Mar 2026 12:06:47 GMT https://www.facebook.com/share/r/1HsUTBoePz/ https://www.facebook.com/share/r/1ECCNjaGMF/ https://www.facebook.com/share/r/1DiALRrj82/ https://www.facebook.com/share/r/1HsUTBoePz/

https://www.facebook.com/share/r/1ECCNjaGMF/

https://www.facebook.com/share/r/1DiALRrj82/]]> Photos of Concept, Fantasy or Science Fiction Subs redboat219 https://forum.rc-sub.com/forum/photos-of-concept-fantasy-or-science-fiction-subs/194228-handmade-stingray-submarine https://forum.rc-sub.com/forum/youtube-videos/194222-this-is-impressive-1-72-type-vii Fri, 20 Mar 2026 19:09:14 GMT https://www.youtube.com/watch?v=R8N4KriBJXQ
‘The fact that he dice statically AND gets close to waterline on surfacing is amazing. Hopefully he will show his innards. Something to learn from!]]> YOUTUBE VIDEOS trout https://forum.rc-sub.com/forum/youtube-videos/194222-this-is-impressive-1-72-type-vii https://forum.rc-sub.com/forum/youtube-videos/194207-i-do-miss-radio-shack Fri, 20 Mar 2026 08:29:59 GMT I would always and only go to the back of the store (like he says in the video) to buy parts from the drawers or peg board walls, resistors,...
]]> YOUTUBE VIDEOS Ken_NJ https://forum.rc-sub.com/forum/youtube-videos/194207-i-do-miss-radio-shack https://forum.rc-sub.com/forum/photos-of-real-subs/photos-of-german-submarines/194161-technik-museum-speyer-type-205-u9-biber-seehund-and-marder Tue, 17 Mar 2026 12:17:40 GMT Following my visit to the Technik Museum in Sinsheim last month, where the Type 206 U-17 is on display... https://forum.rc-sub.com/forum/photo...any#post193798) I had the opportunity to go the museum's other site at Speyer a few days ago, below are a few photos of the submarine's on display.

The Type 205 submarine U-9 has been on display here since the mid 1990's. In the late 1950's West Germany was authorised to build small submarines (initially under 350 tonnes) primarily to support NATO defence of the Baltic sea. The first class to be built was the Type 201 which incorporated non magnetic steel to reduce the risk from magnetic mines, followed shortly afterwards by a lengthened version with an improved sail arrangement. However, the non magnetic steel selected proved problematic as was subsequently found to prone to corrosion and fine cracks limiting the operational life of the Type 201 and 205 submarines built with it. As a result the first batch of Type 205's had a short operational life as training submarines, while the first two Type 201's (U-1 and U-2) were essentially scrapped and rebuilt as Type 205's. A second batch of four Type 205's were built U9 - U12 test alternative non magnetic steels, as well as other improvements which were primarily used as test and trials boats. The later Type 206 enter service in the early 1970's and was based on the Type 205 design with several improvements including the final selection of non magnetic steel. Also the export Type 207 (Kobben class) were based on the 205 design.

U-9 is an example of the second batch (known as the Type 205 mod) of Type 205's incorporating an alternative steel type. It has the original Type 205/201 rudder arrangement with twin rudders outboard of the propeller which unfortunately, this gave the submarine a very large turning radius. To improve the turn radius the final Type 205's (U-11 and U-12) had a different arrangement with the rudder behind the propeller and arrangement which was adopted in the Type 206.

As expected the internal arrangement of U-9 is similar to that of U-17, although as it is slightly shorter the control room is somewhat smaller and more cramped.

Also on display in one of the main halls are WWII German Biber, Seehund and Marder midget submarines.

Both museum sites are well worth a visit, with broad range of aircraft, cars, motorcycles boats, spaceflight articles, trains and other items on display.

​ ​ ​ ​
​ ​]]> Photos of GERMAN Submarines jphatton https://forum.rc-sub.com/forum/photos-of-real-subs/photos-of-german-submarines/194161-technik-museum-speyer-type-205-u9-biber-seehund-and-marder https://forum.rc-sub.com/forum/general-topics/194148-well-i-ll-be-damned Sun, 15 Mar 2026 16:58:35 GMT Body wash with a god damn Submarine on it! How can I possibly pass it by?!?! Body wash with a god damn Submarine on it!

How can I possibly pass it by?!?!

]]> GENERAL TOPICS QuarterMaster https://forum.rc-sub.com/forum/general-topics/194148-well-i-ll-be-damned