Need some clarification on rudder rules. I’m working on an Andrea Doria she has duel in line rudders. Are you allowed to increase rudder size? Do both rudders have to function? Do the rudder have resemble original design?
The rudder size is the one listed, no they don't have to look scale in appearance but have to be no bigger than allowed. Typically you would have almost all the rudder area on the rear rudder right next to the props and just have a stub for the forward rudder. My understanding is the stub doesn't have to function but has to be there but I'm not 100% on that.
look at the Derfflinger that is in the "Warships in detail" section. that shows and explains the inline rudder thing well.
The rules changed since the Derfflinger post. The stub for the forward rudder needs to be present, but not operational. All of the area can go to the larger aft rudder, it’s essentially the same as a single rudder boat. The extra area is already baked into the number in the table in the rules
Yes kevin I’ve read though the rules. But the rudder rules are not very detailed. Your responses to the post was exactly the info I was looking for. When determine rudder square inches . Do I need to figure in the rudder thickness also?
Since the rules changed? What section is it now listed that one can be a stub, I can't seem to find it.
II.C.5 Each ship shall be equipped with the proper scale number of shafts and rudders, all in relatively scale locations with respect to the longitudinal centerline of the ship, and with scale relative fore/aft placement between components.
No. Rudder area is the projected area not the actual surface area. It's not called out in the rules either way but that's normal convention when talking about wings/airfoils in general and how we do it. Thickness has a separate requirement.
So to sum it up basically Place the rudders in the correct area according to ship scale You may build the rudder according to ship class and maximum SQ inch Any rudder design will work as long as you do not exceed max SQ inch allowed for rudders Anything I’ve missed
Good on all you said, just add to what you've got … The maximum thickness of the rudder (single) is 7/8 inch, so if doing a fishtail don't let the tails width exceed 7/8ths. if its tandem rudders the combined thickness needs to be no more than 7/8ths. KP can probably elaborate if I didn't quite get this exact, but that is the spirit of the rule. For some fun reading check out this thread as well, https://rcwarshipcombat.com/threads/rudder-study-ircwcc-fast-gun.443974/ Hope to see you on the water, Craig
That does not say one can be a non moving stub? If it does not move how can it be considered to be a rudder? We may have intended for it to be implied, but as you can see in a weeks time this is the second time someone has questioned the same rule. Why don't the Eboard add a clarifying statement to the rule, they have done it before, the precedent has been set.
I would say it would be fine to model the inline rudder stub to its scale size and shape, any more than that and I would question the captains intentions.
I have no issue with how anybody does it. But the rules do not say it can be a small fixed cut off stub. If that's what they want it to say, the Eboard should correct it is all. And it will make the rule easier to understand.
The rules dictate relatively scale location and max area but do not dictate how that area is divided or that the rudder has to be operational. I think its crystal clear.
