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    Mirangi
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    Member No.#5582
    Registered๐Ÿ“…3rd Jul 2019
    Last Online๐Ÿ“…16th Jul 2025
    City๐Ÿ“Brisbane
    Country๐Ÿ‡ฆ๐Ÿ‡บAustralia
    Genderโ™‚๏ธMale
    Age๐Ÿ‘ถ70
    Posts๐Ÿ’ฌ15
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    ๐Ÿ‡ฆ๐Ÿ‡บ peterd ( Sub-Lieutenant)
    1 Follower
    Recent Activity
    Liked PT Boat Propeller shafts 2 months ago
    Liked Re: Coupling trouble 5 months ago
    Liked Late War Elco 80' PT Boat Model 1 year ago
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    Steve H
    Recent Posts
    ๐Ÿ“ PT Boat Propeller shafts
    2 months ago by ๐Ÿ‡ฆ๐Ÿ‡บ Mirangi ( Leading Seaman)
    โœง 18 Views ยท 1 Like
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    ๐Ÿ“ Reply
    Thanks for this, from the info I have I had worked out that the outer shafts to Keel should be close to 4 Ft, so the 4.375 could be correct.

    Appreciate your time, the knowledge on this site is amazing.
    Steve

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    ๐Ÿ“ PT Boat Motors, Props, etc
    2 months ago by ๐Ÿ‡ฆ๐Ÿ‡บ Mirangi ( Leading Seaman)
    โœง 6 Views ยท 1 Like
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    ๐Ÿ“ Reply
    Good morning, I need some advise on powering a 1:24 size Elco 80 Ft PT Boat.

    Two driven propeller shafts, Light weight construction, hopefully under 4kg displacement. Scale top speed will be fine so long as it planes like to originals.

    From your experience i would appreciate some info:

    1. Propeller size
    2. Required Motor size (Brushless preferred)
    3. ESC size for Motor
    4. Battery size
    5. Anything else I should know

    Appreciate your time, the knowledge in this club is amazing.
    Thanks,
    Steve

    ๐Ÿ“ PT Boat Propeller shafts
    2 months ago by ๐Ÿ‡ฆ๐Ÿ‡บ Mirangi ( Leading Seaman)
    โœง 28 Views ยท 2 Likes
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    ๐Ÿ“ Reply
    I need some information from the wise, I am planning on building an Elco 80 ft PT boat, I have accumulated a lot of info and plans but one thing has proven difficult.

    I plan on a 1/24 size vessel but will only fit two driven shafts with the centre shaft most likely a dummy (removable for sailing). I will fit three rudders.

    The info I cannot find is the Shaft spacing, I also noticed in some of the info I have that the outer shaft appear to not be parallel to the keel - Yes or No ???

    Appreciate your help wise one's!!!

    ๐Ÿ“ Minature action camera
    9 months ago by ๐Ÿ‡ฆ๐Ÿ‡บ Mirangi ( Leading Seaman)
    โœง 35 Views ยท 1 Like
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    ๐Ÿ“ Reply
    Another thought. To use a camera streaming back to the driver requires some sort of telemetry to obtain a reasonable range. Why not use a cheap mobile phone and a video chat app. Assume there must be an app that can record th video session. Itโ€™s possible that the camera could be removed from the PCB on flying leads, perhaps by a mobile repair place.

    This would have a range well out of sight, long battery life and very cheap.
    Your thoughts

    ๐Ÿ“ Minature action camera
    9 months ago by ๐Ÿ‡ฆ๐Ÿ‡บ Mirangi ( Leading Seaman)
    โœง 43 Views ยท 2 Likes
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    ๐Ÿ“ Reply
    Here in Australia you can get small cameras for mounting on car windscreens (Dash Cams). These are small and available in various resolutions. They need 12 Volts to operate but this should be easy to get from the main battery using a โ€œBuck Boostโ€ type regulator. These generally have a small screen and SD card.

    ๐Ÿ“ Engines in my collection
    2 years ago by ๐Ÿ‡ฆ๐Ÿ‡บ Mirangi ( Leading Seaman)
    โœง 17 Views ยท 1 Like
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    ๐Ÿ“ Reply
    I have two of the small outboards (same as one shown bottom right)

    One is same, single cylinder the other is a twin cylinder.both last run in 1970 I would guess.

    Must get them out and see if they will run.

    ๐Ÿ“ Finishing Balsa to look like metal
    2 years ago by ๐Ÿ‡ฆ๐Ÿ‡บ Mirangi ( Leading Seaman)
    โœง 77 Views ยท 3 Likes
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    ๐Ÿ“ Reply
    Looking for help, does anyone have a method for finishing balsa so it looks like metal.

    For example metal ammunition lockers and radar parts on a PT boat.

    Tried Search but could not find anything to really help. Appreciate any suggestions
    Steve

    ๐Ÿ“ 20mm Oerlikon drawings
    2 years ago by ๐Ÿ‡ฆ๐Ÿ‡บ Mirangi ( Leading Seaman)
    โœง 29 Views ยท 3 Likes
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    ๐Ÿ“ Reply
    Appreciate all your help, great deal of knowledge out there.

    Surprised at how difficult to get info on these guns, considering how many have been in service around the world.

    We had them on two of the ships I served on in the 1970's but i dont even have any photos of them, fun to fire them though !!!!

    ๐Ÿ“ 20mm Oerlikon drawings
    2 years ago by ๐Ÿ‡ฆ๐Ÿ‡บ Mirangi ( Leading Seaman)
    โœง 68 Views ยท 3 Likes
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    ๐Ÿ“ Reply
    Hi,
    Looking to build 4 x 20 mm Oerlikons in 1/24 scale for PT boat Thunderbolt gun system.
    Have not had much luck with dimensioned drawings of the Oerlikon guns. Had some success wth the Thunderbolt mounting.
    Does anyone have drawings of the 20mm Oerlikon guns.
    Interested in any drawings or photos of the Thunderbird mounting as well.
    Thanks in advance.
    Steve

    ๐Ÿ“ PT Boat with Thunderbolt gun mount
    2 years ago by ๐Ÿ‡ฆ๐Ÿ‡บ Mirangi ( Leading Seaman)
    โœง 57 Views ยท 0 Likes
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    ๐Ÿ“ Reply
    Wondered if anyone has built a PT Boat with a Thunderbolt gun mounting on the stern?

    I think this would really add to the model appeal.

    Does anyone know any of the boat numbers that were fitted with this gun mount?

    Thanks

    ๐Ÿ“ PT boats weathering
    2 years ago by ๐Ÿ‡ฆ๐Ÿ‡บ Mirangi ( Leading Seaman)
    โœง 37 Views ยท 1 Like
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    ๐Ÿ“ Reply
    Sorry I missed referring to the link in earlier posts and I meant 1:32

    Been an interesting discussion, the wealth of knowledge in this club is amazing as is the quality of models.

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    ๐Ÿ“ PT boats weathering
    2 years ago by ๐Ÿ‡ฆ๐Ÿ‡บ Mirangi ( Leading Seaman)
    โœง 47 Views ยท 0 Likes
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    ๐Ÿ“ Reply
    For 1/35 crew see the Shapeways link below. An awesome range of products.

    Thanks guys

    ๐Ÿ“ PT boats weathering
    2 years ago by ๐Ÿ‡ฆ๐Ÿ‡บ Mirangi ( Leading Seaman)
    โœง 51 Views ยท 4 Likes
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    ๐Ÿ“ Reply
    Appreciate the comments. My thought was minor damage, rough handling against wharfs, staining from polluted water ( fueling jetties), shrapnel splinters, towing damage, smoke stains from motors, guns or use of the smoke generator, etc.

    Iโ€™m pretty sure the uniforms would also be less than pristine.!!!

    I agree that these boats were their homes and they would be proud of them, hence repairs and repainting, minor colour of different paints would probably be lost in camouflage patterns.

    Thanks again

    ๐Ÿ“ PT boats weathering
    2 years ago by ๐Ÿ‡ฆ๐Ÿ‡บ Mirangi ( Leading Seaman)
    โœง 66 Views ยท 4 Likes
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    ๐Ÿ“ Reply
    There are a lot of PT style boats made and can be seen on these web pages, generally these have pristine paint jobs which might be true as they came out of the factory but I think that during the war this is probably unlikely.

    My question is has anyone ever made a model weathered and with some battle damage, I also think these need a โ€œcrewโ€ at least on the helm.

    Anyone got any thoughts on this?

    ๐Ÿ“ Simulated Cooling Water discharge
    4 years ago by ๐Ÿ‡ฆ๐Ÿ‡บ Mirangi ( Leading Seaman)
    โœง 51 Views ยท 3 Likes
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    ๐Ÿ“ Reply
    I have been around boats all my life, cooling water is pumped by rotary pump so i wonder why flow isn't constant from the exhaust?
    i assume this happens because the flow is low compared to the size of the exhaust pipe and water accumulates then flows, vessel movement and possibly non return flaps could cause this. I guess that this effect will not occur when scaled down to model size.

    Probably the easiest way to simulate interrupted flow would be a piston pump or a rotary valve interrupting the flow(stopping or diverting flow), pump/valve speed could be varied with motor speed.
    Just a thought!!!



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