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115 posts · Page 4 of 10
wunwinglo
Petty Officer 1st Class
1 / 2
Fast Patrol Launch
This Fast Patrol Launch was originally built by me and my father in'62/3 it was my entry into marine modelling. initially free-running with a tiny old school blue-cased Mabuchi, it was never 'fast' -as a result it was recomisioned several times over the years but remained dull. in 2013, it was refitted yet again but this time she got a nice potent brushless and a full array of lights. Now she goes very well here at the Oxford lake.
Liked by Brightwork and jacko and
lesliebreame
Chief Petty Officer 1st Class
Fast Patrol Boat
At Ilfracombe pond is Bob Burrows Vintage Model Boat Co kit of the Fast Patrol Boat. Bobs made a nice job of it and has brushless motor with Lipoly batteries. Forward / reverse control was nothing special on maiden voyage and came close to a good sinking !!!
Liked by BOATSHED and circle43nautical and
1 comment
  • BOATSHEDCaptain
    It's nice and fast but doesn't seem to want to turn very well. What is the rudder like is it too big and also how much leading edge has the rudder got. I used to have this sort of trouble and went for a slightly smaller rudder and cut away the leading edge and it solved my problems.
    Liked by Donnieboy
SimpleSailor
Lieutenant
Red Cat hydroplane
Hi. Just put this back together after the 3rd brushless motor caught fire. Made from a rejected glass fibre hull which I bought cheap at a show. I have now learned how to do glass fibre repairs.
Liked by rolfman2000 and John2
6 comments
  • RNinMunichFleet Admiral
    Hi, thanks for the info👍 I'm new to BLs, but learning fast, and your experience confirms my growing suspicions that outrunners not only deliver more torque than inrunners (size for size) but that they are also more reliable and seldom need water cooling.
    Your new motor seems to be a larger diameter 58mm?, as opposed to 31mm for the old one, so I begin to wonder if the old ones were simply overloaded by a big prop causing them to draw more and more current and hence cook! 😡😭
    Check out this test drive (Italian)of your new type motor!!

    cheers Doug 😎
    PS Caption says that with more than 3/4 throttle the boat becomes unstable! Then it flips 🤔
  • RNinMunichFleet Admiral
    PS Don't worry about 'adding up' the Watts and Amps!
    True the spec says 12.6v and 35A, which theoretically gives 441W.
    And the power is rated at 220W. This simply indicates to me that the motor scoffs 441W of power (at Max ratings) and spits 220W out again, i.e. ~50% efficiency 🤔
    Almost any decent brushed motor will beat that! But with other penalties😉
    Cheers Doug 😎
basilsdad
Master Seaman
1 / 4
pt 109
a 30"scratch built pt. boat, I built hull from .8mm ply using a resized eezebilt 20" plan.
the deck fittings were copied as best as I could from photos and drawings found on line. powered by 2- 2200kv brushless out runner motors through 2 20 amp speed controllers. twin contra rotating props twin rudders fast and light a pleasure to build

2
Liked by reilly4 and Northumbrian and
1 comment
Krampus
Warrant Officer
1 / 8
Legal Limit
Original design "Express Cruiser" type boat. Old home-made fiberglass hull built in UK in the 1970s and rescued from previous owner's garage. Model built during April-July 2015. Approx. 1/24 scale. in trying to emulate a Bertram Bahia Mar boat, I ended up with an originally fictitious design. Real life boat could be a 32-footer (9.75m) yacht. 3mm 9v LED navigation lights system. Runs on Mtroniks G2 3A Hyper BEC 6-12V 15A Constant controller, Biao123 A2122 brushless motor, and a NiMH 10.8v battery.
Liked by Brightwork and John2 and
wcolombo
Leading Seaman
1 / 10
PT Boat 673
PT Boat scale 1/20 length 1.22 m, Motorization one brushless motor and two 550 14 v motors , fiberglass hull, superstructure in acrylic laser cut, details in resin and 3D print.
Liked by Gravedigger47 and Zdenek and
3 comments
Dave M
Vice Admiral
Aerokits 34" Crash Tender
Nice sunny Sunday Sail at Boundary Park so took the Crash Tender for a spin
28XX brushless 11.1v 2200 Lipo 35mm three blade brass prop.
Uses 30 amp cars ESC with small fan.
Tx set to 55% on throttle otherwise it takes off. Rudder throw at 50% for same reason. Switchable to 100% for slow speed manouvers.
Great fun.
Dave
Liked by none and BOATSHED and
1 comment
  • andyhynesLeading Seaman
    Nice job performs well.
BOATSHED
Captain
Miss Geico 29"
This is the 29" Brushless Miss Geico. Running on two 14.8 volt 5000mAh LiPo batteries. in Herbert Woods Boatyard in Potter Heigham Norfolk. She is pretty quick but do not know her top speed. Turns flat out on full rudder lock. Runs for about 15 to 20 minutes. Would recommend as a great fun boat.
Liked by none and John2 and
6 comments
  • lesliebreameChief Petty Officer 1st Class
    i know what you mean about speed and i am always trying to get more from my steam boats!!! they are very slow compared with your petrol and brushless jobs but my aim is for more speed .i am working on steam turbines at present which are very inefficient and not that powerful but the intention is eventually for more speed !! you want to try coal fired boiler boats [ i make my own ] . there is much to do pondside what with stoking and water filling and oiling and all and i get loads of fun ..... much more than sailing my old electric crash tender which was fun to build but boring to sail . les breame
  • BOATSHEDCaptain
    It is surprising just what you can get a Crash Tender to do. They can be very fast and also handle very well on the water. Those Vosper hulls are amazing. That's why they were used for the fire tenders and MTB's etc. But then the Fairey hulls like the Huntsman and Spearfish also handle very well at speed.
RETSUB12
Petty Officer 2nd Class
RIVARAMA
Rivarama hits underwater object on test run--(the power of Brushless)
Liked by RNinMunich and Skipper44 and
5 comments
  • Skipper44Master Seaman
    awesome
  • RNinMunichFleet Admiral
    Great looking boat 👍👍👍
    How did you upload the video??
    When I tried it it came out as an 'Invalid file' 🤔
    Cheers Doug 😎
danroyds
Recruit
Riva.
Managed to get the crew in! but not happy with the brushless motor would like to put a arrowshark with e/start in.
Liked by John2
1 comment
  • Dave MVice Admiral
    Hi and welcome to the site.
    If you are considering using an IC in the model I suggest you find a local club or water where you can sail. Many local authority waters prohibit IC engines.
    I see you recently asked for details of a club in Torquay and note that we do have a club registered (Model Boat Clubs) as Torbay and District MBC. You could try sending a pm to one of the members registered as sailing there and ask for details.
    Good looking crew!
    Dave
    Liked by danroyds
cormorant
Lieutenant Commander
KD Perkasa
I acquired this boat part built some months ago through Dave M.
I have not put too much scale in detail but I am quite pleased with the overall finish. it is powered by two brushless 1250KV out runners and in the first sea trials I used 12v lead acid batteries. (That video was posted a few weeks ago - mdlbt.com/26793).
This video shows its second sea trial after I was persuaded to use lipos. The difference in performance is very pleasing.
Thank you Dave M for your help and advice during the build.
Liked by BOATSHED and Inkoust and
7 comments
  • cormorantLieutenant Commander
    Thank you for your compliments.
    This is in fact my second Perkasa. I built the first one about 40 years ago (see photo), before the introduction of the GRP hull. Losing interest in the hobby some years later, I sold the boat and have lived to regret it. (I was also the proud owner of a 37" Aerokits Crash Tender powered by a Frog 2.49cc diesel. That went the same way!)
    The first boat was quite lively powered by a Merco 61 i/c engine.
    No pictures of either I'm afraid.
    Hindsight is a wonderful thing.
    Steve
    Liked by Inkoust
  • BOATSHEDCaptain
    Great piece of video, she certainly planes well. Great looking boat.
    Liked by cormorant
Hybrid
Leading Seaman
1 / 8
Dragonet
This is my 6 month in build of a fully working fishing boat .she has a real I have modified and put a 20kg winch servo so u can real in and out and have drill a hole in to the real and put another servo so u can lock the reel out to.made a back plate on the end of a cut off rod and bolted in to the hull. She has full fpv from the wheel house with a 360 spin HD camera and have even put a digital amp meter so u can look at to and see how mUchida power u have left full running lights controls off hand setc to twin brushless motor water cooled and a large 100 amp esc with air fan and own power supply going to take her out tomorrow for her maiden voyage. Witch has bin a real long time coming and a lot of blood sweat and stress to get it all to work but finally I'm there hope u all enjoy and like what I have dun thanks for reading my post Ben
Liked by circle43nautical and Brucef102 and
1 comment

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