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Type: Posts; User: Got RPM

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  1. Nope, not with the old standard RTR air-cooled...

    Nope, not with the old standard RTR air-cooled weed-wacker engine.

    PS, You have to think smarter than the weeds.


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    2174208 ...

    2174208
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  3. Probably not. Depending on the toughness of the...

    Probably not. Depending on the toughness of the weeds and their actual density, a gas mono might chop through them. But it probably wouldn't be a very fun experience. A traditional flatty airboat...
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    Looks good Paul, keep it up! .

    Looks good Paul, keep it up!



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    The OP can look for boats already built too, some...

    The OP can look for boats already built too, some examples (no longer available):

    http://www.rcgroups.com/forums/showthread.php?t=2339522
    ...
  6. Thread: esc

    by Got RPM
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    What boat will it be put in? How many cells? ...

    What boat will it be put in? How many cells? Usually a motor like that will run at least a 100 amp ESC, but it depends on the boat, voltage and prop.



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    I have designed, built and raced FE cats for over...

    I have designed, built and raced FE cats for over 30 years, and what the OP describes has almost never happened to me. Maybe a second of cavitation, but usually just taking off. Not knowing what...
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    This diagram shows the spray rail inside the...

    This diagram shows the spray rail inside the tunnel. Not essential but it helps to keep the tunnel dry, not filled with splash. It also provides some lift in turns.



    2172894


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    The x560 will be too large and I recommend that...

    The x560 will be too large and I recommend that you do not try it. If you do try it don't run it for more than 60 seconds before bringing the boat in to check temps. Running too long with a huge...
  10. Thread: Polish AirBoat

    by Got RPM
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    6,323

    I really like the CF mount, rudders and...

    I really like the CF mount, rudders and accoutrements. Not just pretty, but quality made. We want to see how it runs!


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    Note that true steps have an angle of attack -...

    Note that true steps have an angle of attack - they are NOT just interruptions in the sponson bottoms. Steps are designed to generate lift under the CG to help offset the aerodynamic lift - which is...
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    Read Wikipedia more carefully. One foot = 6" or...

    Read Wikipedia more carefully. One foot = 6" or 1/2 scale, which with your boat is not the case. Your boat is 1/6th the size of the real one which is 1/6th scale or 1:6.


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    You are not correct, that is why I corrected you....

    You are not correct, that is why I corrected you. There is no confusion, a 1/2 scale model would be 10 feet long. Line up six of your models and they will stretch for 20 feet, the length of the full...
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    The motor is plenty large enough for the boat. ...

    The motor is plenty large enough for the boat. The 40mm props are too small for a boat that size. The 45mm props are barely big enough, the Prather is closer to the right size. An x450 might work...
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    Your boat is 1/6th scale. 20' X 12" = 240"...

    Your boat is 1/6th scale.

    20' X 12" = 240"
    40"/240" = 1/6



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    Where to start. The 1st motor has an excessive...

    Where to start.
    The 1st motor has an excessive Kv.
    The ESC is only good for 5S, half the voltage this big heavy boat will need.
    The LiPo pack won't even work with that ESC. Plus it has a very low...
  17. Thread: spray rails

    by Got RPM
    Replies
    3
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    220

    Spray rails are designed to deflect spray from...

    Spray rails are designed to deflect spray from the planing surfaces away from the hull, where the spray will cause extra drag. On a typical airboat they would be placed along the chine, along the...
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    A small boat like that will be sensitive to the...

    A small boat like that will be sensitive to the CG (balance point) and left-to-right trim. Substituting a larger heavier pack may upset the CG degrading performance, and it will allow the boat to...
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    One thing to remember is that a prop chart for...

    One thing to remember is that a prop chart for planes may not work great for airboats. The prop will unload in a plane and be more efficient with high pitch values; the typical airboat will never...
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    I was a bit confused because you stated in your...

    I was a bit confused because you stated in your first post that you wanted to go as fast as possible, but now you don't. The Kv is not low for that sized motor, in fact it is quite high. Running...
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    This is a late reply, sorry. You have not given...

    This is a late reply, sorry. You have not given us any information on where you will run, your budget, your speed expectations, etc. That motor would work great in a 45" gas hydro running 8S or...
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    Folding the end of a long 75 MHz antenna does no...

    Folding the end of a long 75 MHz antenna does no harm, the entire covered wire is the antenna. This is NOT the case with the 2.4 gig radios, only the last inch or so is the antenna, the rest is...
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    http://www.rcgroups.com/forums/showthread.php?t=13...

    http://www.rcgroups.com/forums/showthread.php?t=1333271

    http://www.snowmobilechq.com/snowmobile-goggles-rc-air-boat-big-gas-power-ha.html?ytid=_pSibjuL-Uk&lvl=1&qs=Snowmobile+Goggles


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    Old thread, but if the OP is still interested: ...

    Old thread, but if the OP is still interested:

    Aquacraft AQUG7002 6-Pole Brushless 1800kV Marine Motor - Tacon is 2-pole, less power/torque
    Aquacraft 60 amp speed control
    x435 or x438 prop...
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    Dude, it's a six-year-old thread (actually 12...

    Dude, it's a six-year-old thread (actually 12 years old). Start your own, you'll get more replies.

    Your first post in the new thread - which Swamp Buggy you have. I doubt it is the 28" version...
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