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Type: Posts; User: mfr02

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  1. Thread: Reverse ?

    by mfr02
    Replies
    15
    Views
    314

    Any speed control or servo just responds to the...

    Any speed control or servo just responds to the signal it gets from the receiver. What the receiver puts out to the ESC/servo depends on the transmitter stick position. Many modern car/boat/truck...
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    232

    I am well impressed with the performance. Then I...

    I am well impressed with the performance. Then I look at your location and mine and realize that you have a better expectation of strong sunlight than me. It must really help a lot with collecting...
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    4
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    232

    Is it fully solar or does the small panel charge...

    Is it fully solar or does the small panel charge a battery during non-sailing time?
  4. Replies
    4
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    377

    I did read a few months back that someone had...

    I did read a few months back that someone had fitted a working Genoa to a Micro Magic as a proof of concept. It did apparently work, but no reports on how well or whether any actual performance...
  5. A stock (cheap) 385 size motor on about half its...

    A stock (cheap) 385 size motor on about half its rated voltage via a 2 or 3 to 1 gear or toothed belt drive. Small, not particularly fast boat with a large prop needing torque.
  6. Replies
    2
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    362

    While not all 50" sailboats are Marbleheads, all...

    While not all 50" sailboats are Marbleheads, all Marbleheads are 50". They carry a max of 800 sq in of sail, so anything that is good for a Marblehead is likely to be OK for yours. Since IOMs carry...
  7. Replies
    5
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    255

    That is what a model supplier over here...

    That is what a model supplier over here recommended for use in a Revell Snowberry a few years ago (although he might have used a 540), so it should be just fine on yours (roughly the same size and...
  8. Replies
    5
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    255

    In about 30 years of boating, I've never had a...

    In about 30 years of boating, I've never had a thought about putting numbers on prop RPM, but oddly, matching the motor, hull, prop and power supply has never been a problem. Without knowing what...
  9. Replies
    5
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    255

    It will be incredibly slow, deeply frustrating...

    It will be incredibly slow, deeply frustrating and boring. That kind of RPM is OK for paddlers, but not for props.
    A 1M boat with a 40mm prop needs something like a direct drive 545 motor...
  10. Replies
    8
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    269

    When you buy a rudder it will usually come with a...

    When you buy a rudder it will usually come with a mounting tube that fits to and through the hull bottom leaving the rudder blade outside and the control arm inside. A nice stiff pushrod is usually...
  11. Replies
    8
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    269

    Use two pull lines to a tiller arm, adjust the...

    Use two pull lines to a tiller arm, adjust the relative arm lengths so that the servo throw gives the required tiller arm throw. This will require some pre-planning to ensure that the lines pull the...
  12. Replies
    5
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    299

    A servo can only respond to the signal that it...

    A servo can only respond to the signal that it gets from the receiver. The signal is compared with the line voltage that the servo gets, so any fluctuations in the line voltage will cause the servo...
  13. Replies
    5
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    299

    I would be surprised if the steering servo worked...

    I would be surprised if the steering servo worked at all with the linkage shown - the two link rods should be parallel to avoid lock-ups and putting too much strain on the servo.
    A boat like that...
  14. Trying to keep it as simple as possible, with...

    Trying to keep it as simple as possible, with nothing but RX power plugged in and the steering servo, what happens when operating the rudder stick, and what happens when you operate the throttle...
  15. Is the speed control mechanical or electronic?...

    Is the speed control mechanical or electronic?
    Is there a separate battery for the RX and the motors?
  16. Replies
    15
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    3,592

    If you know the dimensions of the rudder, it...

    If you know the dimensions of the rudder, it should not be a huge problem to make one. Looking at my Victoria (30") the rudder is 5" deep and 2.5" wide and tapered.
  17. Replies
    8
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    243

    This type of soldering is the easiest - just...

    This type of soldering is the easiest - just remember that all the metal surfaces to be joined need to be burnished just before applying flux, then tinned, offered together and sweated. The "trick"...
  18. Replies
    8
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    243

    I used the ones in the kit, epoxying them to the...

    I used the ones in the kit, epoxying them to the shafts (can't remember if I had to drill the bosses, it was a few years ago).
    Should I feel the need, and if so inclined, I will be knocking some...
  19. Replies
    2
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    759

    A tug with counter rotating props, one each side,...

    A tug with counter rotating props, one each side, is not uncommon. Contra rotating on the same shaft is not. It is torpedo rather than tug territory. Is it a particular tug you have in mind?
  20. Replies
    5
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    415

    There is probably a LARGE capacitor at the power...

    There is probably a LARGE capacitor at the power input end of the ESC, which sits there uncharged until you apply power by connecting the battery. It then charges as fast as possible, giving the...
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    404

    There are RTB (return to base) projects for boats...

    There are RTB (return to base) projects for boats on other sites, so probably there is nothing commercially available for boats. Something like what you describe is used on high end quadracopters,...
  22. Replies
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    5,833

    Scale weather. Multiply the actual windspeed by...

    Scale weather. Multiply the actual windspeed by the square root of the scale. In the smaller scales it doesn't take much for a gentle breeze to become the equivalent of a Biblical event for the...
  23. Replies
    4
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    326

    Terminology - airboats are surface skimmers...

    Terminology - airboats are surface skimmers driven by an airscrew. Sailboats have sails and are wind powered.
    With hovercraft, much depends on the size, and the depth and design of the skirt and...
  24. Replies
    4
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    326

    Look at airboats and hovercraft. There was a...

    Look at airboats and hovercraft.
    There was a youtube clip a few years ago of I think some Dutch guys "sailing" in snow, but I guess that their boat cost a great deal more than 200, whatever...
  25. Thread: Joysway Orion

    by mfr02
    Replies
    2
    Views
    828

    The switch "might" respond to a shot of switch...

    The switch "might" respond to a shot of switch cleaner followed by water repellent lube. If not, it's probably a bog-standard mini slide switch, readily available. A friend has a Dragon (very...
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