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Liked Update on Hybrid Hull 44 minutes ago
Italy
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💬 Re: Made some progress!
2 hours ago by 🇮🇹 AlessandroSPQR (
Admiral)
Admiral)✧ 5 Views · 1 Like
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Great, Roy has cleared your doubts.
I have to admit that I am a bit over the top with security and testing.
Based on Roy's experience you can skip testing.
I have to admit that I am a bit over the top with security and testing.
Based on Roy's experience you can skip testing.
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DuncanP
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💬 Re: Made some progress!
3 hours ago by 🇮🇹 AlessandroSPQR ( Admiral)
Admiral)✧ 6 Views · 2 Likes
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Hi Duncan, let me explain.
Putting electronic components in a closed box is a great idea to preserve them in case water gets into the hold.
However, electronic components need air exchange to dissipate heat.
For this reason, I recommend you do a test in the bathtub.
Leave the motor running continuously (from half an hour to an hour) until the battery is almost flat.
Every now and then, test the temperature (with a thermometer it is better but with your hand it is also fine).
If the temperature is not excessive then the insulation system you made with the plastic boxes is also fine from that point of view.
It's simply a precaution.
Putting electronic components in a closed box is a great idea to preserve them in case water gets into the hold.
However, electronic components need air exchange to dissipate heat.
For this reason, I recommend you do a test in the bathtub.
Leave the motor running continuously (from half an hour to an hour) until the battery is almost flat.
Every now and then, test the temperature (with a thermometer it is better but with your hand it is also fine).
If the temperature is not excessive then the insulation system you made with the plastic boxes is also fine from that point of view.
It's simply a precaution.
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hermank
DuncanP
📝 New restoration project, 48" raf crash tender mk2.
12 hours ago by 🇮🇹 AlessandroSPQR ( Admiral)
Admiral)✧ 17 Views · 1 Like
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Great job Doug.
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hermank
📝 For THose Interested In Unusual Ships
12 hours ago by 🇮🇹 AlessandroSPQR ( Admiral)
Admiral)✧ 7 Views · 1 Like
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Thanks Pat for your kindness, but you don't have to apologize at all.
I had thought about unusual ships and initially I wanted to show you the ones I had found (link at the end), maybe you'll find it funny, even if off topic.
I have to tell you that I have always liked warships (from the aesthetic point of view of lines and shapes).
Compared to today's ones that have shapes and geometries conditioned by the low radar signature, I prefer those from the 70s and 80s.
For me a familiar term of comparison are the current FREMM frigates and the destroyer ORIZZONTE designed with France. Yet I liked those from the eighties better.
Today they would not be effective with those imposing and jagged superstructures but, perhaps, that was precisely their charm.
My favorite was the cruiser VITTORIO VENETO launched in 1969; I always thought it was beautiful.
I wish I had time to make the naval model.
GOOGLE TRANSLATE
Thank you Pat for your kindness, but you don't have to apologize.
I had thought about unusual ships and initially I wanted to show you the ones I had found (link at the end), maybe you will find it funny, even if off topic.
I must tell you that I have always liked warships (from the aesthetic point of view of lines and shapes).
Compared to today's ones, which have shapes and geometries conditioned by the low radar signature, I prefer those of the 70s and 80s.
For me, a familiar comparison is the current FREMM frigates and the destroyer ORIZZONTE designed with France. Yet I liked those of the eighties better.
Today they would not be effective with those imposing and jagged superstructures but, perhaps, that was precisely their charm.
My favorite was the cruiser VITTORIO VENETO launched in 1969; I have always considered it beautiful.
I wish I had time to be a naval model.
TRANSLATOR.EU
Which text is better?
I had thought about unusual ships and initially I wanted to show you the ones I had found (link at the end), maybe you'll find it funny, even if off topic.
I have to tell you that I have always liked warships (from the aesthetic point of view of lines and shapes).
Compared to today's ones that have shapes and geometries conditioned by the low radar signature, I prefer those from the 70s and 80s.
For me a familiar term of comparison are the current FREMM frigates and the destroyer ORIZZONTE designed with France. Yet I liked those from the eighties better.
Today they would not be effective with those imposing and jagged superstructures but, perhaps, that was precisely their charm.
My favorite was the cruiser VITTORIO VENETO launched in 1969; I always thought it was beautiful.
I wish I had time to make the naval model.
GOOGLE TRANSLATE
Thank you Pat for your kindness, but you don't have to apologize.
I had thought about unusual ships and initially I wanted to show you the ones I had found (link at the end), maybe you will find it funny, even if off topic.
I must tell you that I have always liked warships (from the aesthetic point of view of lines and shapes).
Compared to today's ones, which have shapes and geometries conditioned by the low radar signature, I prefer those of the 70s and 80s.
For me, a familiar comparison is the current FREMM frigates and the destroyer ORIZZONTE designed with France. Yet I liked those of the eighties better.
Today they would not be effective with those imposing and jagged superstructures but, perhaps, that was precisely their charm.
My favorite was the cruiser VITTORIO VENETO launched in 1969; I have always considered it beautiful.
I wish I had time to be a naval model.
TRANSLATOR.EU
Which text is better?
)
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hermank
📝 For THose Interested In Unusual Ships
13 hours ago by 🇮🇹 AlessandroSPQR ( Admiral)
Admiral)✧ 7 Views · 1 Like
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Thanks veruy much Doug.
Tried it now (you will see the message below)
They look the same to me though.
Tried it now (you will see the message below)
They look the same to me though.
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hermank
📝 New restoration project, 48" raf crash tender mk2.
14 hours ago by 🇮🇹 AlessandroSPQR ( Admiral)
Admiral)✧ 23 Views · 2 Likes
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Thanks for the reply ColinH.
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hermank
SouthportPat
📝 Weight calculation
14 hours ago by 🇮🇹 AlessandroSPQR ( Admiral)
Admiral)✧ 9 Views · 2 Likes
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Good evening naval modelers.
An interesting discussion was born that I enjoyed.
If I'm not mistaken, Toradog and ChrisF's positions are contrasting, although each has contributed valid arguments and this has made the exchange of ideas very pleasant.
In naval modeling, calculation errors or lack of calculation do not lead to tragedies and disasters, therefore calculations are not essential.
In naval modeling you can successfully build your own model even with limited or zero knowledge, doing tests and experiments.
However, there are those who also enjoy doing calculations, trying to see if their predictions were correct, if their project was valid and functional even before the test in the water.
I am one of these.
Those who have read some topics on the subject will already know it, they already know what my opinion is on the matter.
This does not mean that I blame those who rely only on tests and do not try to do any calculations.
I repeat: for me (very personal taste) even doing the calculations is part of the game and I enjoy it.
An interesting discussion was born that I enjoyed.
If I'm not mistaken, Toradog and ChrisF's positions are contrasting, although each has contributed valid arguments and this has made the exchange of ideas very pleasant.
In naval modeling, calculation errors or lack of calculation do not lead to tragedies and disasters, therefore calculations are not essential.
In naval modeling you can successfully build your own model even with limited or zero knowledge, doing tests and experiments.
However, there are those who also enjoy doing calculations, trying to see if their predictions were correct, if their project was valid and functional even before the test in the water.
I am one of these.
Those who have read some topics on the subject will already know it, they already know what my opinion is on the matter.
This does not mean that I blame those who rely only on tests and do not try to do any calculations.
I repeat: for me (very personal taste) even doing the calculations is part of the game and I enjoy it.
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hermank
Chum444
📝 For THose Interested In Unusual Ships
14 hours ago by 🇮🇹 AlessandroSPQR ( Admiral)
Admiral)✧ 8 Views · 2 Likes
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Hi pat, when I translated the title of your topic Google wrote "inusuale" "insolito" which is synonymous with "uncommon", "strange", "unfamiliar".
But then reading the contents of your messages and the replies to your messages I thought it was the term "dismesso" decommisioned, deregistered, to be scrapped.
What did you mean?
But then reading the contents of your messages and the replies to your messages I thought it was the term "dismesso" decommisioned, deregistered, to be scrapped.
What did you mean?
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hermank
SouthportPat
📝 New restoration project, 48" raf crash tender mk2.
14 hours ago by 🇮🇹 AlessandroSPQR ( Admiral)
Admiral)✧ 26 Views · 4 Likes
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Hi Colin, good evening to you.
A curiosity: did you choose brushless to have a new experience to try them or because you prefer them to brushed?
In that case why do you think they are better for a naval model?
I'm curious to know your opinion.
I can't help you in the choice because I have very little experience (only theory) of brushless I could lead you into error.
I'm sorry but I'm sure you will receive a lot of useful information in this forum, as is already happening.
A curiosity: did you choose brushless to have a new experience to try them or because you prefer them to brushed?
In that case why do you think they are better for a naval model?
I'm curious to know your opinion.
I can't help you in the choice because I have very little experience (only theory) of brushless I could lead you into error.
I'm sorry but I'm sure you will receive a lot of useful information in this forum, as is already happening.
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hermank
SouthportPat
Fred
Colin H
📝 New restoration project, 48" raf crash tender mk2.
20 hours ago by 🇮🇹 AlessandroSPQR ( Admiral)
Admiral)✧ 37 Views · 5 Likes
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Do you already have in mind which electrical setup to put on board (motor, esc, batteries) and which propeller or are you still thinking about it?
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SouthportPat
Fred
hermank
Colin H
Len1
📝 New restoration project, 48" raf crash tender mk2.
20 hours ago by 🇮🇹 AlessandroSPQR ( Admiral)
Admiral)✧ 37 Views · 5 Likes
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Hi Colin, I can't wait to see the master at work.
As I said, I admire and envy those who restore and revive models.
As I said, I admire and envy those who restore and revive models.
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SouthportPat
Fred
Colin H
hermank
Len1
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💬 Re: Made some progress!
2 days ago by 🇮🇹 AlessandroSPQR ( Admiral)
Admiral)✧ 16 Views · 3 Likes
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Very important progress Duncan.
Great work, take into account the proper heat dissipation of the electrical components.
Great work, take into account the proper heat dissipation of the electrical components.
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hermank
Len1
DuncanP
📝 I'm still here, I think?
3 days ago by 🇮🇹 AlessandroSPQR ( Admiral)
Admiral)✧ 25 Views · 6 Likes
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Great return, we welcome this return with great pleasure.
It is truly fortunate that your nephew has given you new stimuli.
We look forward to seeing your work and reading your messages.
It is truly fortunate that your nephew has given you new stimuli.
We look forward to seeing your work and reading your messages.
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Len1
Doogle
Colin H
hermank
DuncanP
RNinMunich
📝 Has anyone built the HA-Kits Flying Christine II Ambulance? boat
3 days ago by 🇮🇹 AlessandroSPQR ( Admiral)
Admiral)✧ 14 Views · 3 Likes
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Hello ColinH.
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Len1
hermank
DuncanP
📝 Helping A Fellow Shipmate
3 days ago by 🇮🇹 AlessandroSPQR ( Admiral)
Admiral)✧ 26 Views · 2 Likes
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Awesome!
You should put more pictures though.
You should put more pictures though.
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tugboatcliff
hermank
💬 Re: Current State of Projects
3 days ago by 🇮🇹 AlessandroSPQR ( Admiral)
Admiral)✧ 27 Views · 1 Like
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Thanks for the help Doug, but I'm having problems with the Word license on my cell phone, I'll have to try this tonight on my PC.
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hermank
💬 Re: Current State of Projects
3 days ago by 🇮🇹 AlessandroSPQR ( Admiral)
Admiral)✧ 28 Views · 1 Like
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Hi Pat I can't open the document.
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hermank
💬 Re: Some additional details; a few more to go
4 days ago by 🇮🇹 AlessandroSPQR ( Admiral)
Admiral)✧ 18 Views · 3 Likes
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Great additions. Very realistic.
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SouthportPat
hermank
Chum444
📝 Has anyone built the HA-Kits Flying Christine II Ambulance? boat
4 days ago by 🇮🇹 AlessandroSPQR ( Admiral)
Admiral)✧ 38 Views · 4 Likes
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Thank you very much for the clarification Duncan and especially for the photo. I just couldn't understand. Now it's clear to me.
I prefer to put the engine as far aft as possible because in this way the propeller shaft is shorter (and this has many advantages). However, I realize that, if it is not possible to position the engine low, then it is better to lengthen the propeller shaft in order to reduce the inclination. Very good.
I prefer to put the engine as far aft as possible because in this way the propeller shaft is shorter (and this has many advantages). However, I realize that, if it is not possible to position the engine low, then it is better to lengthen the propeller shaft in order to reduce the inclination. Very good.
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Len1
Colin H
hermank
DuncanP
📝 Has anyone built the HA-Kits Flying Christine II Ambulance? boat
4 days ago by 🇮🇹 AlessandroSPQR ( Admiral)
Admiral)✧ 39 Views · 3 Likes
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Why put the engine in the bow though? Who knows?
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Len1
hermank
DuncanP
📝 Animal and nature photos to enjoy.
4 days ago by 🇮🇹 AlessandroSPQR ( Admiral)
Admiral)✧ 18 Views · 5 Likes
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What a natural wonder! Absolutely amazing!
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Len1
Doogle
hermank
jumpugly
Wolle
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📝 Has anyone built the HA-Kits Flying Christine II Ambulance? boat
4 days ago by 🇮🇹 AlessandroSPQR ( Admiral)
Admiral)✧ 52 Views · 3 Likes
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Thanks for the reply Roy.
Yes I can imagine that, indeed, 122 grams placed in the bow can affect more than in the stern or amidships and prevent planing. Right.
I lack experience in this field.
Yes I can imagine that, indeed, 122 grams placed in the bow can affect more than in the stern or amidships and prevent planing. Right.
I lack experience in this field.
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Len1
hermank
DuncanP
💬 Re: Construction report "Pilot Cutter Britannia" 1 : 24
4 days ago by 🇮🇹 AlessandroSPQR ( Admiral)
Admiral)✧ 18 Views · 4 Likes
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Get well soon Wolle.
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SouthportPat
stevedownunder
Wolle
hermank
📝 Has anyone built the HA-Kits Flying Christine II Ambulance? boat
4 days ago by 🇮🇹 AlessandroSPQR ( Admiral)
Admiral)✧ 68 Views · 3 Likes
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Hi Roy, I'll start by saying that I'm not an expert in speedboats or even planing.
I love displacement boats.
So I'm asking you this question just out of curiosity, to learn from you.
I looked at the Graupner brand (to have an example reference) and I found that the difference between a Speed 600 [195 grams] and a Speed 400 [73 grams] is 122 grams.
Do you think that 122 grams on a weight of 1.63 kg can negatively affect planing?
This is very interesting to me
I love displacement boats.
So I'm asking you this question just out of curiosity, to learn from you.
I looked at the Graupner brand (to have an example reference) and I found that the difference between a Speed 600 [195 grams] and a Speed 400 [73 grams] is 122 grams.
Do you think that 122 grams on a weight of 1.63 kg can negatively affect planing?
This is very interesting to me
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Len1
hermank
DuncanP
📝 Question of the Day?
4 days ago by 🇮🇹 AlessandroSPQR ( Admiral)
Admiral)✧ 50 Views · 3 Likes
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Good morning ship modelers. I think Nick and Doug are right, this time we got there by logic. I don't want to speak before time, I'd wait until the end of the day to comment.
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RNinMunich
SouthportPat
hermank
📝 Brushed or Brushless Motors
4 days ago by 🇮🇹 AlessandroSPQR ( Admiral)
Admiral)✧ 38 Views · 4 Likes
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Hi Pat, about permanent magnet brushed motors I suggest you read the link at the end of the text.
In the meantime I'll write you some differences, if I'm wrong the other users of the site will correct me.
Brushed motors. Advantages:
They are on average cheaper than brushless ones.
They have two power cables and not three like brushless ones.
By varying the voltage (between a minimum limit and a maximum limit) the power and the number of revolutions vary. To activate them, just power them (you can make a direct connection to batteries or bench power supplies, useful for tests).
This is not possible for brushless.
In fact, the ESC of a brushed is simply a radio-controlled voltage variator while the ESC of the brushless is more complex (it supplies voltages in sequence to the phases), it is a real electronic controller without which the motor could not work.
For reverse (for permanent magnet ones) just invert the power cables. In relation to costs, the brushed esc is on average cheaper than the brushless.
Advantages of brushless.
Usually the brushless is quieter because it does not have brushes.
Sooner or later the brushes will have to be replaced in brushed motors because they wear out. Remember that the brushes scrape on the rotor creating sparks and therefore disturbances in the circuit. This inconvenience can be eliminated (or at least greatly reduced) with three capacitors.
The capacitors are used to eliminate the disturbances that the motor creates in the circuit and not vice versa.
Generally I find brushed motors more advantageous for ships (I think it's the opposite for airplanes) and less affected by noise. I'm sure I've forgotten something, but as it comes to mind I'll tell you.
In the meantime I'll write you some differences, if I'm wrong the other users of the site will correct me.
Brushed motors. Advantages:
They are on average cheaper than brushless ones.
They have two power cables and not three like brushless ones.
By varying the voltage (between a minimum limit and a maximum limit) the power and the number of revolutions vary. To activate them, just power them (you can make a direct connection to batteries or bench power supplies, useful for tests).
This is not possible for brushless.
In fact, the ESC of a brushed is simply a radio-controlled voltage variator while the ESC of the brushless is more complex (it supplies voltages in sequence to the phases), it is a real electronic controller without which the motor could not work.
For reverse (for permanent magnet ones) just invert the power cables. In relation to costs, the brushed esc is on average cheaper than the brushless.
Advantages of brushless.
Usually the brushless is quieter because it does not have brushes.
Sooner or later the brushes will have to be replaced in brushed motors because they wear out. Remember that the brushes scrape on the rotor creating sparks and therefore disturbances in the circuit. This inconvenience can be eliminated (or at least greatly reduced) with three capacitors.
The capacitors are used to eliminate the disturbances that the motor creates in the circuit and not vice versa.
Generally I find brushed motors more advantageous for ships (I think it's the opposite for airplanes) and less affected by noise. I'm sure I've forgotten something, but as it comes to mind I'll tell you.
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Len1
jostro65
ChrisF
SouthportPat
📝 Has anyone built the HA-Kits Flying Christine II Ambulance? boat
4 days ago by 🇮🇹 AlessandroSPQR ( Admiral)
Admiral)✧ 71 Views · 3 Likes
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Hi Duncan, I refrain from recommending engines because I always prefer to take oversized ones (in terms of power).
I would opt for an equivalent of the Speed 600 but I know I will attract a lot of criticism (moreover justified).
However, this could be useful for your choice:
I would opt for an equivalent of the Speed 600 but I know I will attract a lot of criticism (moreover justified).
However, this could be useful for your choice:
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Len1
hermank
DuncanP
📝 Modello RC scala 1/60, di piroscafo armato a goletta, liberamente ispirato alle cannoniere classe US
5 days ago by 🇮🇹 AlessandroSPQR ( Admiral)
Admiral)✧ 13 Views · 1 Like
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Thank you very much Duncan!
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stevedownunder
📝 Modello RC scala 1/60, di piroscafo armato a goletta, liberamente ispirato alle cannoniere classe US
5 days ago by 🇮🇹 AlessandroSPQR ( Admiral)
Admiral)✧ 13 Views · 1 Like
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Thank you so much, Stevedownunder.
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stevedownunder
💬 Re: some progress with the taxiboat
5 days ago by 🇮🇹 AlessandroSPQR ( Admiral)
Admiral)✧ 16 Views · 0 Likes
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Beautiful motorboat.
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