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>> Home > Members > reilly4
Registered
5th Aug 2015
Last Online
18th Jul 2018
reilly4

Member Stats
Stats
Member No. 3464
Registered 5th Aug 2015
Last Online 18th Jul 2018
City Avondale Heights VIC 3034
Country Australia
Boats in Harbour 3
Sailing Locations 0
Forum Posts 30
Photos Posted 61
Likes Received 147
Likes Given 119
69 Total Posts
Sailing Locations
No Sailing Locations
Harbour
U-181
Type: Submarine
MTB741 Fairmile D
Type: Naval Ship
HS Smitzopoulos
Type: Naval Ship
Captain
Ranks Points
Fleet Admiral 1000
Admiral 800
Captain 600
Commander 400
Lieutenant 200
Sub-Lieutenant 100
Chief Petty Officer 50
Petty Officer 25
Seaman 10
Apprentice 2
Recruit 0
51 points away from Admiral!
Points
Activity Worth Awarded
Boats in Harbour 8 24
Forum Thread 5 5
Forum Post 2 60
Event 8 0
Photo Gallery 10 10
Photos Response 3 21
Video Post 15 165
Video Response 3 48
Build Blog 20 0
Blog Post 5 0
Blog Response 3 3
Sailor 8 0
Guestbook Post 8 0
Liked Posts 1 119
Received Likes 2 294
749 Total Points
Good Conduct Medal
This member donated!
Australia
Recent Posts
U-181 by reilly4 Captain   Posted: 9 days ago
Hi Doug, I have used the floating periscope on my other submarine too. On that one there are two sets of two. If the periscope tubes slide easily and the float is big enough then it will work. I have used aluminium tubes on the HMS Triumph. The U boat scopes are both aluminium. They are loose so I can put one or both in before sailing. The floats are balsa wood and painted for sealing.

Booster nozzle by reilly4 Captain   Posted: 10 days ago
My suggestion would be to contact the Kehrer shop directly. They are most likely to answer any of your queries. Looking at the booster nozzle it looks like a circular section squeezed into a smaller square with the cross fins to straighten out the jet thrust.

U-181 by reilly4 Captain   Posted: 11 days ago
My crew were made by Shapeways. Somewhat expensive, but I needed an unusual scale. I asked a question and the designer got back to me. I was able to select from a few different groups and he also did a few pose mods. The crew is available as U-181. I think they can be scaled down to any scale, although the Revell U-boat crew are also available and a lot cheaper. Some of them now sail on my 1/72 Z39 destroyer. So far I have put 6 crew members onto the boat and I have 6 remaining. They are mainly for the front 105mm and rear 37mm guns, and more sitting (for the seats on the wintergarden). My periscope has a very simple working method. A balsawood cylinder at the bottom of the periscope. Sub dives and the periscope comes up. Sub surfaces and the periscope goes down.

U-181 by reilly4 Captain   Posted: 12 days ago
There are 2 ballast tanks 750ml each - allowing nearly 1.5kg of ballast. I have only fixed half the crew to the boat, and only some key ones in the conning tower. You cannot see them when at a distance and certainly not underwater, so a calculated view. They do stand out on the photos so it looks more realistic. I think the newer tube internals allow for smaller subs but there is hardly any space left within this model.

U-181 by reilly4 Captain   Posted: 13 days ago
[Score: 9/10] 77"/17500g U-181 Capable of 4mph and a runtime of 90mins Twin Propellors (3 Blade 35mm) Geared to a Mabuchi 550 (3 Blade) Powered by NiMH (6v) 10Amp/h Batteries Controlled Through MTroniks 20A ESC - Comments: This is an Engel kit, but heavily modified. The deck was replaced with 2mm polycarbonate and slots cut with a slotting tool on a lathe/drill. There are 3 access hatches instead of the original 1. The internal layout was completely revised. The dive system is the Engel Tmax that works very well. There are too many other changes to mention, but suffice to say they were to make the submarine more realistic and also easier to maintain.

U-181 by reilly4 Captain   Posted: 13 days ago
U-181 is a Type IX D2 U boat of the German Kriegsmarine. It is one of the largest U-boats. It is a heavily modified Engel kit. 1/45 scale. It took about 1 1/2 years to build.

Our boating water by reilly4 Captain   Posted: 2 months ago
Hi Boatshed, Fortunately my submarines and I are safely on the other side of the planet. I agree with Doug. Communication and common sense are essential to happy sailing. 😎 However, a colleague of mine that sails his subs in close proximity to others including out of control yachts, feels the need for a sign. It severely detracts from the realism of the model and has still been run into. Perhaps a 'muppet' flag on 'power boats' will make them obvious and enable local submariners to dive to safety.

Our boating water by reilly4 Captain   Posted: 2 months ago
An anecdote. My HMS Triumph submarine has a piano wire antenna with the periscopes (not the working antenna) bent to a diamond shaped tip (for safety). A few years ago in the same venue as my previous post above, HMS Triumph was submerged and heading roughly towards the jetty. Hard to know exactly where. I decided to surface to be safe. At the same time three large swans were gliding along gracefully in the vicinity. Suddenly one of the large swans went vertically upwards about two or three feet with his large wingspan fully well extended. The sub's antenna has come up right under his bottom and given him the surprise of his life. The sub surfaced after a few more seconds directly under where he was. It may have got kicked down in the scramble. No damage to either but for the few of us watching it was hilarious. No video unfortunately or it may have gone viral.

Our boating water by reilly4 Captain   Posted: 2 months ago
We have swans.

CB90 by reilly4 Captain   Posted: 2 months ago
Great looking model. It seems to perform like the real thing.👍

MGBs in Weymouth 1943 by reilly4 Captain   Posted: 2 months ago
There is an old British war movie 'Appointment with Venus', about the rescue of a prize cow. It features a Fairmile D in some great scenes. If one is building a Fairmile D then the boats in this movie will provide inspiration.

MTB 379 by reilly4 Captain   Posted: 2 months ago
It is a good thing that the realistic 15" shells splashes kept missing the MTB. 😉

Our boating water by reilly4 Captain   Posted: 3 months ago
That looks like a fantastic place to sail boats. How deep is it?

MGBs in Weymouth 1943 by reilly4 Captain   Posted: 3 months ago
They look like Fairmile D's.

H.M.S. BRAVE BORDERER by reilly4 Captain   Posted: 3 months ago
Hi Rowen, I have had water cooling on all my patrol boats running at 12Volts, whether brushed or now brushless. For the brushed motors I have used aluminium tube coils with water pickups between the propellers and rudders. I did try water jackets a couple of times but found too much friction loss and therefore lack of flow. For the newer brushless outrunners I use a brass tube soldered to a brass plate across the front of the motor fitted between it and motor mounting bracket. I agree with Doug with regards to the disconnection of the red wires on the ESC's. This is now common practice, especially if you have an external receiver battery.

Hms Rodney/ Nelson by reilly4 Captain   Posted: 4 months ago
This link may be of use for the Nelson and Rodney (Rooney?) fans. https://www.youtube.com/watch?v=4LS129lkvS8

Hms Rodney/ Nelson by reilly4 Captain   Posted: 4 months ago
I think HMS Rodney was long before USS Rooney!!! Lord Rodney would not be amused. 😁 Just taking the Mickey. 😁

Higgins PT Boat by reilly4 Captain   Posted: 4 months ago
This Higgins PT boat was built and sailed by a good friend of mine. It is scratch-built. It uses a single Turnigy 3639 1100kV brushless motor and LiPo battery. It is pretty new and has not had its number painted on as yet. Its performance is excellent.

MTB741 Fairmile D by reilly4 Captain   Posted: 4 months ago
[Score: 9/10] 58"/9000g MTB741 Fairmile D Capable of 9mph and a runtime of 65mins Twin Propellors (2 Blade S Type 40mm) Direct Drive to a Graupner 700BB 12V (2 Blade S Type) Powered by NiMH (12v) 9Amp/h Batteries Controlled Through MTroniks 30A Tio x 2 (10Amps) ESC - Comments: 1/24 Scale. Scratchbuilt from John Lambert Drgs & photos. It took 3.5 years. Plywood bulkheads, pine stringers & balsawood planking, then fibreglassed. Superstructure balsawood. Guns scratchbuilt from tinplate and brass. There are 2 motors and drive trains powered by 2 x 9cell NiMH D cells x 9Ah. 6 pdr guns rotate. 20mm oerlikon rotates and elevates. Radio is Futaba 2.4 GHz

Skirtless hovercraft by reilly4 Captain   Posted: 4 months ago
Mr. Grumpy - The reason for a hovercraft skirt is to provide a flexible seal between the craft and the ground/water surface. If everything was flat and smooth, then a shirtless hovercraft would probably work, as a uniform cushion of air could be maintained. Unfortunately this is not reality. I used to like the concept of a hovercraft and once keen to model one, but having seen real ones and models lack of directional control have gone away from the idea. Another reason for the skirt - bouncing off nearby objects in the vicinity of the hovercraft.

Fairmile D 1/24 Scale Build by reilly4 Captain   Posted: 4 months ago
I have scratch-built a Fairmile D in 1/24 scale. if you look through my posts/videos you will see it. I used the Lambert-Ross Allied Coastal Forces book for the plan that I scaled up. Perhaps I should enter it in my boat harbour. Anatomy of a Ship is also a good source of information. I built mine from Balsawood/Pine and fibreglassed it. Attached are a few photos. Watch the videos. They may inspire you. I have previously posted these links under videos. https://www.youtube.com/watch?v=a3KotucrlzE&t=20s https://www.youtube.com/watch?v=Ny718cnD6sQ&t=166s

HMCS AGASSIZ (Corvette) by reilly4 Captain   Posted: 5 months ago
Magnificent detail work. It is a masterpiece of modelling.

Hovercraft by reilly4 Captain   Posted: 5 months ago
Very nice, the hardest thing to do is probably to drive in a straight line.

Pride Of Hythe by reilly4 Captain   Posted: 5 months ago
Very nice model, Well sailed too. The music is from New Zealand.

Too Powerful Brushless ? by reilly4 Captain   Posted: 5 months ago
Hi Graham, There have probably not been any answers so far because we are most possibly speechless. If you go back and read through the comments above you will see that most of the problem has been the large overpowering of your boat (1690 Watts - according to info provided by DaveM), coupled with an inadequate drive train. So with all this knowledge available you have asked our opinion of the Graupner 500ECO - one of the largest motors in that range. This is quoted at 1440 Watts. This may not rip the drive train out as quickly as the other motor did but has enough torque to do so. In my opinion I think you could try a motor producing under 500 Watts and see how that goes - with a 5mm shaft.

Too Powerful Brushless ? by reilly4 Captain   Posted: 5 months ago
Thanks Dave, Eventually we will have put together a body of knowledge that model boat builders can use with some certainty. At present the information is sketchy, hard to find and sometimes ambiguous. The motor designers and manufacturers have not been very helpful. For my La Combattante iii missile boat I used two Hobbyking Keda 720kV motors rated at 215 Watts and 19.3amps max. They were the first brushless motors I tried. I was not sure how many amps they would draw, so I connected an ammeter and fitted my video camera so it read the amps whilst operating. At full speed they used only 8 amps each. Each of the batteries is from 12V made from 9 x NiMH 9Ah D Cells. I easily get over an hour run time at good speed. The boat is 1605mm long so not small. This information may help someone.

Too Powerful Brushless ? by reilly4 Captain   Posted: 5 months ago
Graham, I have attached the same table that Doug sent me. This has the relevant information you seek. According to the table attached the Graupner 500 kV ECO has a specified output of 1440 watts and 80Amps. Strangely the 400 kV ECO has a specified output of 2010 Watts. So the 1440Watt output is questionable and may be a typo based on the other entries in the table. more likely to be 2440Watts In any case you need a 5mm diameter propeller shaft. For shaft alignment i use a brass tube that slides snugly on the propeller shaft and then on the motor shaft. When the tube rotates/slides well on both then the shafts are aligned. I then fit the motor mounts, check and tweak the alignment if necessary, remove the tube and replace with a universal coupling. If the motor or propeller shafts are a different diameter then I insert the relevant size smaller tube inside the larger of the tubes. This method is simple and has served me well, including for larger IC engine powered boats belonging to friends. Haig

Too Powerful Brushless ? by reilly4 Captain   Posted: 5 months ago
Thanks Dave, In common car language that is a V12 in a Ford Fiesta, with the Fiesta drive train. In some ways I believe the brushless motor manufacturers/sellers are responsible for the confusion. Mostly we see the kV, physical size and the number of Lipo cells required. You need to dig deeper to find out the Watts. The kV basically gives the RPM only. No mention of amps and power. We don't buy cars and motorcycles based on the engine RPM do we? Typically if you look at the reputed Graupner Speed Brushless range, they have low kV specs, but the differences between a 400kV 7.4V, 400kV BB 11.1V and a 400kV ECO 14.8V are 130W, 1100W and 2010W respectively. A huge difference. When viewing the on-line retail sites, including Graupner, they all look the same (maybe the same photo), but they are all very different motors. Without the rated amps and Watts (not published) the buyer is left unclear as to what they should buy. Brushed motors are more clearly defined. I must thank Doug for helping me out with Graupner brushless specs when I required assistance.

Too Powerful Brushless ? by reilly4 Captain   Posted: 5 months ago
I get my Raboesch propellers from Cornwall model boats - and I am in Australia. It would be very interesting if there was a video made at the start of this post. How many Watts of power is that motor producing. That is the question I would have asked at the time.

Hello by reilly4 Captain   Posted: 6 months ago
GOM - Grumpy Old Man 🤐 or 🤓