NEW 2017 HYDRO JET Official Thread

Discussion in 'Scratchbuilding!' started by RCPowers, Jan 29, 2017.

  1. bogusbandit56

    bogusbandit56 Top Gun

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    I am totally obsessed with the weight of my planes, partially a hangover from my vintage free flight days, but mainly due to the fact a lightweight plane will perform much better than a heavy plane.
    It climbs quicker turns better and has better acceleration and you can use the less expensive Turnigy 2826 2200kva motors or 2212 2700 kvas.
    The important thing to remember with the Hydrojet is that you must take into account of the weight of the water sticking to the airframe as well. I bet that can bollock a few unwanted ounces on.

    I hate painting my planes cos I know I will need about 3 coats to cover depron plus my painting skills are about as good as a well-educated Chimpanzee.:D
     
  2. bogusbandit56

    bogusbandit56 Top Gun

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    There`s no doubt it will fly at 22 ounces but the reason for the weight limit is to keep the prop out of the water.
    Oh, by the way, Heli`s and multi`s don't fly, they are so horrible the earth repels them.:D
    Just kidding, I love Bumble Bees.
     
  3. Flybyknight22

    Flybyknight22 Top Gun

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    BB56,

    Who built a hydro-jet that weighed 22 ounces?
     
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  4. bogusbandit56

    bogusbandit56 Top Gun

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    I don`t know, just theoretical numbers really:)
     
  5. BadAxeFlyer

    BadAxeFlyer Ace Pilot

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    I realized early on last year, after building 3 or 4 planes, that I build light. Mainly due to Foam-Tac I imagine, buy my weights have always fallen on the light side of a build. So thats why I dont worry much about weight, unless there is a specified reason to do so with a build, like this one. I agree with you though, the lighter a plane the better it flies. So I am glad I started right off as a light builder.
     
  6. bogusbandit56

    bogusbandit56 Top Gun

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    You totally did start right:).
    IMHO a light plane is easier to get out of trouble because it has superior handling over a heavy model.
    A lighter model has less mass so less damage in a light prang.
    No matter how much glass fiber you put on a plane`s nose to protect it, the damage is transferred back along to the next weakest part which is usually the prop slot.
    Some people will say you want weight for penetration in the wind, I say fly a more streamlined plane like a wing or monoplane.
    Parkjets have a lot of drag and when you are tootling around in the calm weather doing slow aerobatics this is a help rather than a hindrance.
    I am a firm believer in "horses for courses" and pick the right plane for the weather conditions.
     
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  7. Yes but my high powered heavy ones get me out of trouble easily plus I can fly them on a windy day, so I tend to overdo the strength and end up heavier but also bigger power plants in them. both ways work and have their pros and cons. Definitely for this build the lighter the better to keep that prop out of the water.
     
    Last edited: Mar 6, 2017
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  8. bogusbandit56

    bogusbandit56 Top Gun

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    I have already proved my point with the Gotha P.60:)
     
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  9. Ah, but I had a cruiser and a rocket. ;)
     
  10. jimpalmer

    jimpalmer Ace Pilot

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    Getting going on mine today. Is it ever a fast build. Started it this afternoon at the end of work and Will be ready for electronics tonight. IMG_0735.JPG
     
  11. jimpalmer

    jimpalmer Ace Pilot

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    Now a functioning aircraft. Waiting for paint idea to come into my head and a maiden flight. With a 1300 mah battery it will balance at about 1/8" to 1/4" towards the tail heavy. Should be OK as I don't mind a bit tail heavy. With the same battery AUW is 16.4 ounces. Paint will add a bit more. I wasn't really careful to keep the weight down. I used about 1/4 foam tac and the rest was hot glue. As you can see in the picture I sandwiched some Popsicle sticks between the front section Hydro Jet complete.JPG
     
  12. jimpalmer

    jimpalmer Ace Pilot

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    I went out for the maiden. Verdict is in - it flies - and well.
     
  13. BadAxeFlyer

    BadAxeFlyer Ace Pilot

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    Awesome! Thanks for sharing. Been wanting to see more vids of this model. I am still waiting for weather I enjoy flying in to maiden mine.

    Just remember when adding your paint. Over 18 oz and the prop will hit the water. I sound like the weight Nazi in this thread, lol and I usually dont even weigh my planes. :) :) :)
     
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  14. Shannon

    Shannon Administrator

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    Like! Like! Like! That was so cool! Thanks for sharing Jim!
     
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  15. Nightswatch

    Nightswatch Top Gun

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    she sure floats nice well done looks like she can hover literally
     
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  16. jimpalmer

    jimpalmer Ace Pilot

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    Easy to hover it when there is a 20 - 30 km wind. It was a bit crazy day for a maiden but I couldn't wait. Point the nose into the wind and let it sit there.
     
  17. jimpalmer

    jimpalmer Ace Pilot

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    Having some fun in the snow out in my backyard today.Still haven't painted.
     
  18. HaHa, I think Murphy was laughing at you when you dumped it. :D
     
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  19. jimpalmer

    jimpalmer Ace Pilot

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    Both of us were having fun.
     
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  20. jimpalmer

    jimpalmer Ace Pilot

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    Notice the little tree bump as well. It was tricky in such a small space especially with the 20 km/hr winds.
     
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