Project type XXI scale 1/96

[MFR1964]

Sorry David, i did it again, ripping apart a good functional SD, but done with a reason,


Took the complete SD down, i wanted to make a extra conduit inside, like to run signal and power wires separate.





Ran into a problem with the old configuration of the SD, the receiver was too big combined with the larger servo's, i do miss the Sombra SL8 receivers, should have bought more in the past, unless somebody has them lying around with no use, i would gladly take them over.
Luckely i have a spare transmittor/receiver from WyFly, had to take off the housing of the receiver to make it work, also made the choice to run the boat snort instead of SAS, the room inside the tower is eaten up by the scopes and snorkel.


A test to see if everything will fit inside the SD, placed the magnetic couplers for connecting the rudder/diveplanes.


First made the index pin, this way you always can place the SD the same way.


By building up the engine part and placing the index pin i could mate both the steering of the rudder and diveplanes.

For now i have to rebuild the entire SD for my needs, to be continued.

Manfred.

[MFR1964]

Danke Jorg,

Working at this scale with my dissorder for details is a challence, on the other hand, did a 212 at this scale, the 212 stands even smaller.
Today i have the SD inside the first time, time to get me some steering of the diveplanes and rudder.


First made a guide for both the steeringrods, for maintenence i can take it out by unscrewing the M2 screws


Followed the same route as David went with cutting away the flanges untill the SD dropped in, a tight fitt.


Made some hollow copper covers to hide away the steering of the rudder, it's not scale, slightly bigger, but hey!! it does the job.


For now she stands like this, diveplanes extended, not fastened yet, first have to make some index pins to line up both halves.

Manfred.

[JHapprich]

Mächtig gewaltig, Manfred!

Very impressive!

Jörg

[redboat219]

Happy new year!

[MFR1964]

Manfred, all I can simply say is that you have not exceeded our high expectations of you. I get to watch Dave do his dirty work, and then I see your's. It's like watching Ford vs GM technology on the same item, and I'm thoroughly entertained. I can't wait to see your's in the water.

David has his style as I also have, i have a history of static building from scratch, and a slight disorder for details, it will take some time before she will see the water, first finish the things i want todo to this boat, made allready a list of things to get me a functional boat.







With this contraption i was busy for the last two days, it works like intented, but hell!!, it's small at this scale.


Dryfitting it to see if there is enough room, had to grind some things away to get enough clearance


Had to enlarge the openings in which the diveplanes will retract, it will not be scale but practical, first have to device a way to get them in permantly


Manfred.

[Davjacva]

Manfred, all I can simply say is that you have not exceeded our high expectations of you. I get to watch Dave do his dirty work, and then I see your's. It's like watching Ford vs GM technology on the same item, and I'm thoroughly entertained. I can't wait to see your's in the water.

[MFR1964]

Did not make that much progress because of the size, you have to work very easy, otherwise you screw up and the story begins all over a second time.


Made some square pieces at the end of both shafts, this allows me to swing them both in an out the device i've turned, those planes are pressfitt so i could take them off during soldering of the square parts.


This piece i made on the lathe, those square inserts on the turned part are made to catch both divingplanes, so in this way i can retract them and make them move up and down.

I've got to make some brackets which will hold the turned piece at it's place and it has to give me the possibilty to add a steeringhorn for moving up and down, the tricky bit will be, making this turn as lightly as possible.


And some preparation on the parts which will hold the SD and the motors, need to search for some small Velcro in the stash.

Manfred.

[MFR1964]

Manfred, you are ending 2024 with a bang! Talk about being a show off. Retractable planes in such a small size is insane, but I love watching you go crazy. As far as the small details it does make a difference and people will notice the extra effort. You are inspiring.

Agreed Tom, building at this scale is a challence (think magnifiers), it seems the older we get, the smaller we build, less weight to carry to the water i guess, as for the details, i have to make Rube Goldberg proud and like to tease David.

Manfred.

[MFR1964]

WOW! Manfred,

Talk about creating! Your old school building skills are really showing with this build. The engineering process alone is so enjoyable to see come to a finished product. I also see you are not afraid to step outside the box to experiment and build.

Thank you for taking the time to post up your work and keep it coming!

Rob
"Firemen can stand the heat."

Rob,
Taking the time to document this will give other builders maybe some new idea's, pretty much the same way i learn from you guys, as for thinking outside the box, you have to be creative to solve problems you encounter during your builds even when everybody says, it's impossible

Manfred.

[trout]

Manfred, you are ending 2024 with a bang! Talk about being a show off. Retractable planes in such a small size is insane, but I love watching you go crazy. As far as the small details it does make a difference and people will notice the extra effort. You are inspiring.

[rwtdiver]

David, take a chair, breath in/out in a calm way, take a drink to relax and enjoy my succes or failure to build retractable bowplanes, if it's possible i want to try it.

Manfred

WOW! Manfred,

Talk about creating! Your old school building skills are really showing with this build. The engineering process alone is so enjoyable to see come to a finished product. I also see you are not afraid to step outside the box to experiment and build.

Thank you for taking the time to post up your work and keep it coming!

Rob
"Firemen can stand the heat."

[MFR1964]

David, take a chair, breath in/out in a calm way, take a drink to relax and enjoy my succes or failure to build retractable bowplanes, if it's possible i want to try it.

Manfred

[He Who Shall Not Be Named]

Ah, hence the fact David said they will hold up only one season, the brushes will ground down quicker at the end due to the use in water.

Since i'm free from work i spent some more time on the conningtower, adding extra antenna's and the splitterplates as well a set of resquebouyes, made a start for building the mechanism to retract the bowplanes.


Made the schnorkelhead smaller, looks more like the drawings i have.


Made some provions on the conningtower to make it possible to screw it down on the upperpart with M2 screws.




It took a drill of 0,5 mm to make the holes for the steps, added the splitterplates and some more antenna's, for the detailnuts also made the towinghook at the rear of the conningtower, at this scale you won't see that driving her in the water, but hey!!, i know that is there.





Started a new adventure of making the mechanism to retract the bowplanes, for now i need the lathe to get me the connectionpiece which hold them and move them when extended.
This scale is not helping, if this will turn out as a failure i will follow the KISS way David went, but first a want to try if it's possible.

Manfred.

Retractable bow planes??!!!!... YOU SCREAMING MANIAC!!!!

[MFR1964]

Manfred, about 20 years ago I thought it was bonkers, but we got some RC car and truck people involved with tanks, and they always break-in their motors individually inside a glass on water. The main purpose is to wear-in the brushes, which provides a more stable voltage output, and it cuts down on arcing/ sparking which effects radio reception. Dave told me after running his that the motors run much better and this stands to reason.

Ah, hence the fact David said they will hold up only one season, the brushes will ground down quicker at the end due to the use in water.

Since i'm free from work i spent some more time on the conningtower, adding extra antenna's and the splitterplates as well a set of resquebouyes, made a start for building the mechanism to retract the bowplanes.


Made the schnorkelhead smaller, looks more like the drawings i have.


Made some provions on the conningtower to make it possible to screw it down on the upperpart with M2 screws.




It took a drill of 0,5 mm to make the holes for the steps, added the splitterplates and some more antenna's, for the detailnuts also made the towinghook at the rear of the conningtower, at this scale you won't see that driving her in the water, but hey!!, i know that is there.





Started a new adventure of making the mechanism to retract the bowplanes, for now i need the lathe to get me the connectionpiece which hold them and move them when extended.
This scale is not helping, if this will turn out as a failure i will follow the KISS way David went, but first a want to try if it's possible.

Manfred.

[He Who Shall Not Be Named]