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Type: Posts; User: mfr02

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  1. Replies
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    248

    RTR Southampton if you can find one. Possibly...

    RTR Southampton if you can find one. Possibly enough power on a really calm day, but many have been modified with better motors and speed controls and bigger batteries.
    Build a Springer.
    Lts of...
  2. Really nice model, but I think nearer 1:144. ...

    Really nice model, but I think nearer 1:144. 1:44 would be about 23 feet long.
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    254

    70 real life mph on a notional 1/8 scale model...

    70 real life mph on a notional 1/8 scale model (scale mentioned in an earlier post) would be the equivalent of about 200 mph full size. Since test tanks do work, you will have the same problems to...
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    200

    15mm is 6 inches. That is BIG lettering on a...

    15mm is 6 inches. That is BIG lettering on a model. I assume that the 150 was a typo?
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    29,000 ton ship at 1:96 gives 73 lb. Its going...

    29,000 ton ship at 1:96 gives 73 lb. Its going to need some serious scooping if it takes on water, because it will weigh even more then.
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    Have a look for build threads involving large...

    Have a look for build threads involving large models. Build materials vary widely, as do construction methods. For a fairly extreme example - http://www.marcle.clara.net/sd14.htm
    Most liners have...
  7. This is a 9 year old thread. I wonder if the OP...

    This is a 9 year old thread. I wonder if the OP ever progressed it. With but 9 posts, I suspect that he moved on to some other hobby.
  8. Thread: rc boat

    by mfr02
    Replies
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    357

    When I was young and broke, before the easy...

    When I was young and broke, before the easy availability of sheet plastic and fiberglass, other building materials were used. One of the more surprising was cardboard - the sort that cornflakes...
  9. When you mention things like "amps" to many RC...

    When you mention things like "amps" to many RC car people you can see their eyes glaze over. Since their bit of the hobby developed with a single battery size and largely a single motor size,...
  10. Just avoid "racing" motors where the advertising...

    Just avoid "racing" motors where the advertising tells you that the motor has very few turns. Those few turns are invariably thick wire that causes huge current draw to give the power for the high...
  11. Mtronics Marine Viper, probably the 15, but that...

    Mtronics Marine Viper, probably the 15, but that depends on your choice of motor. Scale on a 24" hull? Probably a basic generic 385 (15 volt type) running on about half that voltage. The other...
  12. You have seen the list of "optional extras that...

    You have seen the list of "optional extras that people have used with this kit". Is there an actual valid reason why you insist on doing something different and still expect it to work?
    The list...
  13. You have been given a list of components known to...

    You have been given a list of components known to work. You have ignored it and are now surprised that it does not work. It is possible to ignore instructions and get a good result, but, outside of...
  14. 380 - can is 38mm long. the "0" tells you that...

    380 - can is 38mm long. the "0" tells you that it is a 3 pole motor. The advertising blurb might tell you wind details. Usually, if these are quoted, they are a clue that it is intended as a...
  15. Parts in the boat usually consist of a receiver,...

    Parts in the boat usually consist of a receiver, servos to do whatever mechanical job needs doing, and one, maybe more, ESCs to control drive motors. Servos and ESCs plug into the battery. Many...
  16. The OP does say that for the project, the boat...

    The OP does say that for the project, the boat will not be controlled, so there isn't really much chance of building up the revs. It's either going to be full on, or off. Since this is a "racing"...
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    A rule of thumb regarding pricing for basic model...

    A rule of thumb regarding pricing for basic model boats that I have found surprisingly true over the years is "100, then add 100 for every foot of length". That works OK in the UK. Different...
  18. It restricts the current that the motor gets. ...

    It restricts the current that the motor gets. More resistance, less speed. Full speed happens when all of the resistance is bypassed. Since the resistor(s) are in series, they pass exactly the...
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    I don't know about Testors, because I live in the...

    I don't know about Testors, because I live in the UK (basically Humbrol land), but generally, oil based enamel is good on any surface and is as tough as it needs to be. Whether it works or not...
  20. The servo tester wants 5 volts as does the input...

    The servo tester wants 5 volts as does the input side of the ESC. If the ESC contains a BEC, no problem. If t doesn't, you need either a separate BEC or a separate 4.8v battery to power the servo...
  21. The boat is unlikely to spend much more than a...

    The boat is unlikely to spend much more than a couple of hours on the water any one day unless a lot of spare batterys are available, even then, during eating and sleeping times, it is likely to be...
  22. Any wood varnish that claims to be at least...

    Any wood varnish that claims to be at least weatherproof and is clear is generally fine. Yacht varnish is better - it can flex with the wood when it expands or contracts. As ever, thin coats,...
  23. What he said Plus - spring modelling clamps can...

    What he said
    Plus - spring modelling clamps can be had in bulk at low cost from most household goods shops. They call them spring clothes pegs, but we know better. If the ends chamfer the wrong...
  24. Brushed motors can be used direct off the...

    Brushed motors can be used direct off the battery. The brushes and commutator do the technical job of putting the power into the right places at the right time.
    Brushless motors are only half of...
  25. Thats it - the 380 will do the job direct drive...

    Thats it - the 380 will do the job direct drive with no gearbox provided the prop is not too big*. My only mention of a gearbox was with regard to using one motor to drive two shafts. Obviously, a...
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