Rhaps
Elite member
It looks so good!
Good luck on the maiden!
FTFC21 - Seaplane Design & Build by Leaded50, Yokosuka 12-Shi Special Flying Boat (H7Y)
- Thread starter leaded50
- Start date
Good luck on the maiden!
leaded50
Legendary member
did water taxi testing today.... with not "perfect result". The floats are set 220mm from fuselage centerline, thats to little!
When a wing tips into water, it clings to the watersurface..and the boyance of floats aint enough to lift it. I can make bigger floats, but it would be easy seen out of scale, so decides rather rework where the floats are mounted. (lucky i did them screwed on, easy to move..
) That will give the outer wings enough boyance by floats.
The camera used wo hoped was ok.. wasnt exactly good... it did make disorted colors, and suddenly ended video after approx 2.5 minuts.
When a wing tips into water, it clings to the watersurface..and the boyance of floats aint enough to lift it. I can make bigger floats, but it would be easy seen out of scale, so decides rather rework where the floats are mounted. (lucky i did them screwed on, easy to move..
) That will give the outer wings enough boyance by floats. The camera used wo hoped was ok.. wasnt exactly good... it did make disorted colors, and suddenly ended video after approx 2.5 minuts.
Monte.C
...
That's cool. You'll fix it for sure. It's about to fly right now!did water taxi testing today.... with not "perfect result". The floats are set 220mm from fuselage centerline, thats to little!
When a wing tips into water, it clings to the watersurface..and the boyance of floats aint enough to lift it. I can make bigger floats, but it would be easy seen out of scale, so decides rather rework where the floats are mounted. (lucky i did them screwed on, easy to move..
The camera used wo hoped was ok.. wasnt exactly good... it did make disorted colors, and suddenly ended video after approx 2.5 minuts.
leaded50
Legendary member
naaah... double float thickness for sure would helped, but would be looking very "bolbuos" vs the plane. And by extending the arm, the floats would get "too low". Floats on a flying boat is ment for stabilizing on water at slow speed/taxing, and be out of water when it speeds away for take off, with close to only the step in hull at water.It still looks great on the water.
That "sticking" effect is a real pain, If you keep the location the same you should be able double the thickness. and extend the arm a bit to provide the buoyancy you need.
Continued luck to you sir. keep at it!
- looks great on water indeed
leaded50
Legendary member
Floats on a flying boat is ment for stabilizing on water at slow speed/taxing, and be out of water when it speeds away for take off, with close to only the step in hull at water. And on any 3D view of such planes from side,the wing floats will never bee as low as the keel at hull. Such planes goes on keel only approx close to the step, as last waterconnection before take off.
Thats for minimize drag, and use best effect for taking off.
On the H7Y now, it had the recommended 4* degrees, but wingspan was too wide outside of floats, so when wing tipped, it stroke the watersurface, and "clinged" to it.
by moving the floats outward 170mm more from center, it got 9* degrees to tip , still approx 3* degrees vs the keel on hull....and the problem isnt there anymore
If wing have had dihedral angle outside of float, this wouldnt happend.
One of the things by the original plane that no info found gave answer on... where the floats was mounted. Only knowledge is that was retractable, and not at tip.
Thats for minimize drag, and use best effect for taking off.
On the H7Y now, it had the recommended 4* degrees, but wingspan was too wide outside of floats, so when wing tipped, it stroke the watersurface, and "clinged" to it.
by moving the floats outward 170mm more from center, it got 9* degrees to tip , still approx 3* degrees vs the keel on hull....and the problem isnt there anymore
If wing have had dihedral angle outside of float, this wouldnt happend.
One of the things by the original plane that no info found gave answer on... where the floats was mounted. Only knowledge is that was retractable, and not at tip.
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