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Captain)
Fleet Admiral)
Petty Officer 1st Class)
Rear Admiral)
Liked Spam 2 months ago
United States
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📝 A question for our American shipmates.
2 months ago by 🇺🇸 ToraDog (
Commodore)
Commodore)✧ 32 Views · 3 Likes
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Lew is correct,
Buyer beware. That said, we are living in a world where someone else is always trying to control what we do. The williwags look better all the time, at least for the moment...
Buyer beware. That said, we are living in a world where someone else is always trying to control what we do. The williwags look better all the time, at least for the moment...
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RodC
Nickthesteam
hermank
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📝 A question for our American shipmates.
2 months ago by 🇺🇸 ToraDog ( Commodore)
Commodore)✧ 49 Views · 4 Likes
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Nickthesteam,
Yup.
I didnot mean to kick the hornet's nest... well maybe, "kinda sorta" as we say Downeast....😀
Yup.
I didnot mean to kick the hornet's nest... well maybe, "kinda sorta" as we say Downeast....😀
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Len1
hermank
Nickthesteam
Chum444
📝 A question for our American shipmates.
2 months ago by 🇺🇸 ToraDog ( Commodore)
Commodore)✧ 49 Views · 5 Likes
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Chumm,
Sorry, but I have to say this... your description sounds like our Attorney general....🙄🙄🙄
Sorry, but I have to say this... your description sounds like our Attorney general....🙄🙄🙄
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Len1
hermank
Chum444
Nickthesteam
RNinMunich
📝 A question for our American shipmates.
2 months ago by 🇺🇸 ToraDog ( Commodore)
Commodore)✧ 49 Views · 3 Likes
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"So Karen's actually exist?😀😀😀 "
Way, way, too many of them are out there.
USA is the land of entitlement.☹️☹️☹️
Way, way, too many of them are out there.
USA is the land of entitlement.☹️☹️☹️
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Len1
Nickthesteam
LeeA
💬 Re: Final launch day
2 months ago by 🇺🇸 ToraDog ( Commodore)
Commodore)✧ 16 Views · 3 Likes
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Very Nice! Great photos as well!😀
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Len1
hermank
AlessandroSPQR
💬 Re: Launch Day - Day 9
2 months ago by 🇺🇸 ToraDog ( Commodore)
Commodore)✧ 22 Views · 3 Likes
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Did he get to finish the bottle after the christening?😂
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DuncanP
Len1
📝 Question for Pat and the others as an alternative to AI.
2 months ago by 🇺🇸 ToraDog ( Commodore)
Commodore)✧ 18 Views · 2 Likes
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What Chumm said, plus, anodes also protect the different metals of a boat below the waterline. Dissimilar metals, bronze, stainless steel, steel, aluminum in a saline, or even fresh water environment, where Magnesium is the anode of choice, constitute a battery. Not to mention "stray currents, as Chumm mentioned, especially for boats hooked up to shore power,(AC).
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SimpleSailor
Chum444
📝 Mixing servos using a 40mhz TX
2 months ago by 🇺🇸 ToraDog ( Commodore)
Commodore)✧ 25 Views · 0 Likes
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I like Roycv's suggestion.
Also, what radio system and model are you using. If it is a computer radio, you should be able to set up mixes without any additional external mixer.
Also, what radio system and model are you using. If it is a computer radio, you should be able to set up mixes without any additional external mixer.
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📝 Propulsion; three props or other systems
2 months ago by 🇺🇸 ToraDog ( Commodore)
Commodore)✧ 19 Views · 3 Likes
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My V4-MA-1 tug has a Kort nozzle. The inside diameter is even bow to stern. The outside has an airfoil shape I had it turned from a piece of bronze according to the original Maritime Commission plans. It is a fixed Kort.
In my head, I would think that if the ID tapered, presumably front to back, it would negate some of the advantage of the Kort. Unlike air, H2O is not compressible( I think you knew that 😂) so thrust should not increase.
But, then what do I know???🤣
In my head, I would think that if the ID tapered, presumably front to back, it would negate some of the advantage of the Kort. Unlike air, H2O is not compressible( I think you knew that 😂) so thrust should not increase.
But, then what do I know???🤣
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Len1
Chum444
hermank
📝 Propulsion; three props or other systems
2 months ago by 🇺🇸 ToraDog ( Commodore)
Commodore)✧ 37 Views · 3 Likes
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Chumm,
Unless you are operating at the David Taylor Center( USN hydrodynamic research center for proving of ship/hull designs and characteristics in a scaled environment) I think that us modelers worry too much.
There are so many variables that effect a ship's response and we, as modelers, have almost zero control over the majority of them. How true is your prop? What is the actual pitch? How about drag coefficients? Are our power plants( motors) scale to the HP of the 1:1 ship? The list goes on.
In the end, it is a hobby, and we try to make our models work prototypically which really all we want.
Unless you are operating at the David Taylor Center( USN hydrodynamic research center for proving of ship/hull designs and characteristics in a scaled environment) I think that us modelers worry too much.
There are so many variables that effect a ship's response and we, as modelers, have almost zero control over the majority of them. How true is your prop? What is the actual pitch? How about drag coefficients? Are our power plants( motors) scale to the HP of the 1:1 ship? The list goes on.
In the end, it is a hobby, and we try to make our models work prototypically which really all we want.
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Len1
hermank
Chum444
📝 Propulsion; three props or other systems
2 months ago by 🇺🇸 ToraDog ( Commodore)
Commodore)✧ 37 Views · 4 Likes
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Allessandro,
Thank you for the correction!
Chumm,
Right handed and left handed props are equally efficient. So why did US Pt's have all like handed wheels? Expediency and cost. The choice of R vs L handed was based upon the engine rotation direction.
Why all three? It saved on the cost and weight of additional reverse gearing. The only down side to these decisions, that I know of, was a different turning diameter, Port vs Stbd.
In the long run, on our models it hardly makes any difference, except to scale appearance.
Thank you for the correction!
Chumm,
Right handed and left handed props are equally efficient. So why did US Pt's have all like handed wheels? Expediency and cost. The choice of R vs L handed was based upon the engine rotation direction.
Why all three? It saved on the cost and weight of additional reverse gearing. The only down side to these decisions, that I know of, was a different turning diameter, Port vs Stbd.
In the long run, on our models it hardly makes any difference, except to scale appearance.
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Len1
hermank
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📝 Propulsion; three props or other systems
2 months ago by 🇺🇸 ToraDog ( Commodore)
Commodore)✧ 37 Views · 3 Likes
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Chum,
First, steam powered vessels were reversible, at least reciprocating drive one's were. Steam turbines are not, hence the addition of a reverse turbine. Early steam turbine plants generally lacked a reverse turbine. They would come later when turbine drive became more reliable, economic and sophisticated. Early turbines also lacked the HP relative to reciprocating engines.
Early in their development, steam turbines proved their worth as an easy way to add increased HP without bulk.
Looking at the design histories of later ships, the three engine plant was a compromise. The turbines had by this time become matured and the HP available from them was such that three shaft would provide the speed needed, without the internal space demands for
an additional turbine, boilers and fuel supply. This, in turn allowed the re-allocation of tonnage to other" more important" items, such as armor and armament.
There is an interesting correlation between anticipated range of a ship and the shaft arrangements. The USA, Britain, and Japan, quickly adopted the four shaft arrangement, while Germany, and Italy chose three shafts.
There is quite a bit more to this than what I present, but hopefully the idea is conveyed.
In the end, the shaft arrangement often reflects the HP available per shaft in relation to the speed target of the vessel.😊
First, steam powered vessels were reversible, at least reciprocating drive one's were. Steam turbines are not, hence the addition of a reverse turbine. Early steam turbine plants generally lacked a reverse turbine. They would come later when turbine drive became more reliable, economic and sophisticated. Early turbines also lacked the HP relative to reciprocating engines.
Early in their development, steam turbines proved their worth as an easy way to add increased HP without bulk.
Looking at the design histories of later ships, the three engine plant was a compromise. The turbines had by this time become matured and the HP available from them was such that three shaft would provide the speed needed, without the internal space demands for
an additional turbine, boilers and fuel supply. This, in turn allowed the re-allocation of tonnage to other" more important" items, such as armor and armament.
There is an interesting correlation between anticipated range of a ship and the shaft arrangements. The USA, Britain, and Japan, quickly adopted the four shaft arrangement, while Germany, and Italy chose three shafts.
There is quite a bit more to this than what I present, but hopefully the idea is conveyed.
In the end, the shaft arrangement often reflects the HP available per shaft in relation to the speed target of the vessel.😊
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Len1
hermank
Chum444
📝 Prop selection for triple (3) props
2 months ago by 🇺🇸 ToraDog ( Commodore)
Commodore)✧ 55 Views · 5 Likes
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The simple answer to the original problem, the boat pulling in one direction when accelerating, is to apply some opposite rudder. Full size boats due that, aircraft do that and the issue is solved. if you find that pull is constant then add rudder trim to correct it. KISS
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Len1
SimpleSailor
hermank
AlessandroSPQR
Chum444
📝 Prop selection for triple (3) props
2 months ago by 🇺🇸 ToraDog ( Commodore)
Commodore)✧ 57 Views · 6 Likes
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Chumm,
We have to put this in perspective. The last US ships built with three props were early(very) destroyers. After the steam plants developed and the turbines to match, two props became the rule.
However, foreign navies built three shafted ships right up to WW 2. See the German capital ships for example.
As to which combination proved most effective, that question needs to go to the engineers.
It certainly did not do Bismark any good...
We have to put this in perspective. The last US ships built with three props were early(very) destroyers. After the steam plants developed and the turbines to match, two props became the rule.
However, foreign navies built three shafted ships right up to WW 2. See the German capital ships for example.
As to which combination proved most effective, that question needs to go to the engineers.
It certainly did not do Bismark any good...
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Len1
Chum444
hermank
AlessandroSPQR
SimpleSailor
RNinMunich
📝 Prop selection for triple (3) props
2 months ago by 🇺🇸 ToraDog ( Commodore)
Commodore)✧ 53 Views · 4 Likes
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bruced,
I have a slightly larger scale ELCO. I do not experience the pull that you speak of and my props all rotate in the same direction, as per the original ELCO's.
I have a slightly larger scale ELCO. I do not experience the pull that you speak of and my props all rotate in the same direction, as per the original ELCO's.
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Len1
hermank
SimpleSailor
AlessandroSPQR
📝 Question of the Day?
2 months ago by 🇺🇸 ToraDog ( Commodore)
Commodore)✧ 52 Views · 4 Likes
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AlessandroSPQR,
Sadly, it seems that negative lessons are the only way we learn. ( see: USA)
Cheers all.
Sadly, it seems that negative lessons are the only way we learn. ( see: USA)
Cheers all.
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hermank
SouthportPat
Nickthesteam
AlessandroSPQR
📝 Question of the Day?
2 months ago by 🇺🇸 ToraDog ( Commodore)
Commodore)✧ 49 Views · 5 Likes
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Nickthesteam,
Your comment is exactly what jumped into my mind when I read this question. The second question I had was why that reasoning was missed by de Havilland?
I guess that water and air don't mix, at least not the engineers😂😂😂
Your comment is exactly what jumped into my mind when I read this question. The second question I had was why that reasoning was missed by de Havilland?
I guess that water and air don't mix, at least not the engineers😂😂😂
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hermank
SouthportPat
RossM
Nickthesteam
AlessandroSPQR
📝 Question of the Day?
2 months ago by 🇺🇸 ToraDog ( Commodore)
Commodore)✧ 45 Views · 6 Likes
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The Venetian lagoon? wasn't there a movie made made about that place. The Creature From The Black Lagoon?
I certainly would not swim in it.....🤣🤣🤣🤣
I certainly would not swim in it.....🤣🤣🤣🤣
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SimpleSailor
hermank
DuncanP
EdW
Steves-s
RossM
📝 Differential thrust for brushless motors
2 months ago by 🇺🇸 ToraDog ( Commodore)
Commodore)✧ 28 Views · 2 Likes
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I have seen, many times, where one of us is trying to increase the turning ability of their boat/s. Action Electronics made? or still makes a mixer that performs the function of increasing the outboard throttle when to appropriate rudder direction is called for, but I believe that works on only brushed motors.
Is there a way to do it for brushless motors? Yes.
I am learning this as a novice RC airplane pilot.
This system applies to brushless motors where two ESC's are used. It requires a "computer radio"( aren't they all now?)
The following link explains how to easily program the mixes and program the switches.
This system works very well on my Spektrum, I can attest to that, but is applicable any to descent radio.
Is there a way to do it for brushless motors? Yes.
I am learning this as a novice RC airplane pilot.
This system applies to brushless motors where two ESC's are used. It requires a "computer radio"( aren't they all now?)
The following link explains how to easily program the mixes and program the switches.
This system works very well on my Spektrum, I can attest to that, but is applicable any to descent radio.
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DuncanP
hermank
📝 Authentic operation for z-drives
3 months ago by 🇺🇸 ToraDog ( Commodore)
Commodore)✧ 30 Views · 3 Likes
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Gents,
Take a look at GoBilda servos. They can rotate 300 degrees. They are also re-programmable to to provide 360 degree proportional rotation.
Take a look at GoBilda servos. They can rotate 300 degrees. They are also re-programmable to to provide 360 degree proportional rotation.
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Len1
hermank
SimpleSailor
📝 Lines plan
3 months ago by 🇺🇸 ToraDog ( Commodore)
Commodore)✧ 38 Views · 3 Likes
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Can you be a bit more specific about which plans you want? Such as the vessel?
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Len1
hermank
RNinMunich
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💬 Re: Propeller Shafts and Propellers to Complete the Drive Train
3 months ago by 🇺🇸 ToraDog ( Commodore)
Commodore)✧ 37 Views · 3 Likes
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You have done a wonderful job.
I wish I had been able to advise you to apply tape to the outside of the hull around the shaft tubes. It makes for a neater look.
I would expect that you could mix your throttle with your "other" throttle and use just your throttle stick most of the time while running you boat. The only time you need independent is playing and perhaps docking.
You should be able to do this.😊
I wish I had been able to advise you to apply tape to the outside of the hull around the shaft tubes. It makes for a neater look.
I would expect that you could mix your throttle with your "other" throttle and use just your throttle stick most of the time while running you boat. The only time you need independent is playing and perhaps docking.
You should be able to do this.😊
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hermank
ChrisF
peterbro
💬 Re: Runabout from a PT Boat
3 months ago by 🇺🇸 ToraDog ( Commodore)
Commodore)✧ 54 Views · 3 Likes
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Very nice!
I use to know a gent in Downeast Maine who owned a runabout similar to yours. He told me that it was built by ELCO. It certainly had the lines and it went like a bat out of ... you know.
I use to know a gent in Downeast Maine who owned a runabout similar to yours. He told me that it was built by ELCO. It certainly had the lines and it went like a bat out of ... you know.
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Len1
algon
hermank
📝 My new toy
3 months ago by 🇺🇸 ToraDog ( Commodore)
Commodore)✧ 24 Views · 1 Like
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I see now Ed.
I was having fun with the little Amazon box and the big new toy. Something did not fit right.
Looks like lot's of fun!
I was having fun with the little Amazon box and the big new toy. Something did not fit right.
Looks like lot's of fun!
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Len1
📝 My new toy
3 months ago by 🇺🇸 ToraDog ( Commodore)
Commodore)✧ 30 Views · 2 Likes
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NICE! What is it? did it come in the Amazon box?😂
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Len1
jumpugly
📝 Question of the Day?
3 months ago by 🇺🇸 ToraDog ( Commodore)
Commodore)✧ 42 Views · 4 Likes
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Well of course I knew that. I got it wrong just to see if the AI was paying attention.
I thought that this was a model boating web site, not a geology course....😊
I thought that this was a model boating web site, not a geology course....😊
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Rockbag
RNinMunich
SouthportPat
hermank
📝 Question of the Day?
3 months ago by 🇺🇸 ToraDog ( Commodore)
Commodore)✧ 46 Views · 5 Likes
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Doug,
With your aim, should we lower the poop deck?🤣
With your aim, should we lower the poop deck?🤣
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RNinMunich
jumpugly
hermank
Nickthesteam
SouthportPat
📝 Question of the Day?
3 months ago by 🇺🇸 ToraDog ( Commodore)
Commodore)✧ 46 Views · 5 Likes
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Perhaps the boom vang was named after Admiral Vang, who was boomed.😀
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jumpugly
hermank
Nickthesteam
Steves-s
SouthportPat
💬 Re: Almost there
3 months ago by 🇺🇸 ToraDog ( Commodore)
Commodore)✧ 47 Views · 4 Likes
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Wicked nice! Are you going to weather her or present her right out of the yard? She will look fantastic either way.😊
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Len1
hermank
SimpleSailor
AlessandroSPQR
📝 Local Suppliers
3 months ago by 🇺🇸 ToraDog ( Commodore)
Commodore)✧ 34 Views · 2 Likes
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Ditto LewZ and thadlietz,
My supplies, parts, glues, almost exclusively come from on-line. LHS have for a long while complained that on-line sales hurt them, but at the same time, they do not stock very much to begin with. It has become a self fulfilling prophesy. Sadly.
We have two LHS in the entire State and neither caters to boats except RTR. I have lost my inclination to drive 2-3 hours to a LHS only to find that they do not stock what I need.
I am very jealous of everyone across the Pond. You have gold mines. Don't let them fail.
My supplies, parts, glues, almost exclusively come from on-line. LHS have for a long while complained that on-line sales hurt them, but at the same time, they do not stock very much to begin with. It has become a self fulfilling prophesy. Sadly.
We have two LHS in the entire State and neither caters to boats except RTR. I have lost my inclination to drive 2-3 hours to a LHS only to find that they do not stock what I need.
I am very jealous of everyone across the Pond. You have gold mines. Don't let them fail.
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hermank
Nickthesteam
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