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Type: Posts; User: peterCAPitALL

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  1. Replies
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    Re: Scale to R/c

    I spend a lot of time on these as I tried to make it as actual scale boats and not just R/c boats, I used brushed motors from disused cars.I am sure that ducted fan jet would work on the rite sized...
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    Scale to R/c

    What started as scale models for new boats turned into radio controlled, 1- wet deck full cage,11 x 7 two blade prop, 2- deck over shrouded 9 x 7 three blade prop, 3- deck over pancake 10 x 7 three...
  3. Re: Thrust improvement, more bang for the buck.

    As I suggested in my take on air drive for small boats in, (Mini Tech - Air drives - Small boats.) I do believe this is worth looking into as I for one always try to get the most out of the least....
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    Re: Why don't I see any....

    It has been tried without much success, first off you have to fill in all the space between the hulls to prevent the water been sucked up destroying the propeller and in a turn one of the hulls dig...
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    Re: Small boats

    I have not tried this on my boat yet, but judging from the push on the dolly it may have more thrust than my 45" x 32" on the boat. It's made from fiberglass, with a 40 mm. (1-1/2") bell mouth and 5...
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    Re: Small boats

    By all accounts the drag only become a factor at higher speed and low trust cruising speeds over 60 m.p.h. Most small Hover craft use them. Ducted fan airboat see www.airboatuk.com
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    Re: Small boats

    Venturi, with a small 2" throat outside the tips for this small motor, it possibly increase thrust by 25-30% over open prop.The design of the "duct" inside and outside straighten out the air flow so...
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    16,752

    Small boats

    Here is my take on a workable air drive for small boats, this is a shrouded 39" x 24" prop I had on a hover craft with a belt drive, as the belt sapped some power it would not rev up so I now made it...
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    Re: single rudder vs dual???

    So far all my crafts (Hover and Airboat) had side to side sticks, I find that dual airfoil rudders with setback pivot point works
    best for me, as the setback works like power steering and the...
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    Re: Floatation

    The engine on my boat is a Hirth f 36 (Solo 210) with a tuned exhaust and a 2.2 : 1 belt reduction, 45" x 34"
    Geo Killy. wood prop, static thrust tested at 115 pounds.
    Yes the foam will soak up...
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    Re: Floatation

    The foam is mostly gas!, my boat weigh 125 kg. (275 lb.) including the motor 10 kg.(22 lb) and 5 mm. H D P E. on the bottom.
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    Re: Floatation

    The density polyurethane foam that I used come to 7.25 kg. (16 lb.)
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    14,146

    Re: Floatation

    This is how I installed 50 mm, 2" foam blocks in my boat and covered to form a wet deck. On my 3 m.x 1.5 m. (10 ft.x 5 ft.)
    Mini it's good for 225 kg. ( 496 lb.) buoyancy.
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    5,154

    What happens after the build?

    So rite I after the build there is a lot of testing, running, alterations and improvements to do. The past months has been a real learning curve for me, even having my boat set up about as good as it...
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    Re: Mini Hull for PPG back pack motor

    Riding and Sliding January 26 2014, I have 10 kg. (29 lb.) removable ballast up front so it would run well with two up.
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    Re: Mini Hull for PPG back pack motor

    I came across a thrust test that was done 2003 on the same motor and propeller as mine it was given as 115 pounds,.
    Still no pictures taken of my mini on the water hope to get some on Sunday. Here...
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    19,759

    Re: Mini Hull for PPG back pack motor

    Out playing with the big boys November 24, very windy and choppy even the big boat had a hard time in to the wind. My boat ran good given the conditions even come out on the grass, I think I would be...
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    Re: Mini Hull for PPG back pack motor

    Just a update on the boat, I have been hard at work to get all done in time for my big ride with Chris of Airboat Afrika with his 16 ft. scorpion on Sunday 24th. Some facts, in S.A. one don't need to...
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    Re: Mini Hull for PPG back pack motor

    I tact it together to show to my friend from "Airboat Afrika" in order to put the rudders together without the aluminium end caps I made timber ones, worked until 3 am Sunday morning, now I have to...
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    Re: Mini Hull for PPG back pack motor

    just about the only option in S.A is U.H.D.P.E or H.D.P.E (I noticed in the US. its M.W instead of "D") it's < 8 kg. (17.5 lb.) H.D is good for this light boat total wight only 125 kg. (275 lb.) cost...
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    Re: Mini Hull for PPG back pack motor

    Close, only the rudders to complete, waiting for the end caps to be done, and the poly to be screwed on to the bottom.
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    Re: Mini Hull for PPG back pack motor

    Close, only the rudders to complete, waiting for the end caps to be done, and the poly to be screwed on to the bottom.
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    Re: Mini Hull for PPG back pack motor

    As said here is some pictures note the tool for putting in the curve on the stringers as the engineering could not do it, all the spaces between the stringers will be filled with 50 mm (2 in)...
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    Re: Mini Hull for PPG back pack motor

    after waiting for 4 weeks on the engineering shop to do the cutting and bending I am now ready to start assembling my boat I will try and post some pictures tomorrow.
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    Floatation

    I have noticed that most Airboats in the U S do not seem to have any flotation build in. Our local regulations state that you have to have 30% for inland and 60% for coastal waters, I am including 2"...
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