Modeltech Magic wont hover
#1
Thread Starter
Senior Member
My Feedback: (3)
Joined: Oct 2003
Posts: 290
Likes: 0
Received 0 Likes
on
0 Posts
From: Winchester,
MA
I am using the recomended 115 MM from leading edge... It goes up into a hover and imediatly falls out as if it is nose heavy.. should I add tail weight? engine is a TT 46 pro swining a 10x4 prop.. ty
#2
Senior Member
Joined: Jul 2003
Posts: 1,722
Likes: 0
Received 0 Likes
on
0 Posts
From: london, UNITED KINGDOM
In what way does it fall out? if it falls out towards the undercarriage then chances are you need to move c of g back a bit and add a bit of upthrust. If it falls off to the left then you may need more right thrust.
#3

My Feedback: (4)
Joined: Dec 2003
Posts: 363
Likes: 0
Received 0 Likes
on
0 Posts
From: Firestone,
CO
I would try moving the CG back- I had the exact same problem with mine- hold a hover for a second or two then it fell out. I have heard other guys LOVE to hover their Magics all the time. I never pushed my CG back enough to "know" if it would help, btu i bet it would! I did build a hatch behind the bulkhead that seperates the saddle area from the tail so i could put my battery in it. Made things more interesting, but I still couildn't hover it to save my life. But then again, it was my first 3-D plane! One thing-watch for tip stall- especially inverted and pushing out hard.
Cody
Cody
#5
Senior Member
My Feedback: (2)
Joined: Sep 2004
Posts: 7,457
Likes: 0
Received 0 Likes
on
0 Posts
From: Johns Creek,
GA
put a bigger prop on...that prop is good for speed, but not torque.....
I've used a 12.25 x 3.76 with good luck....
buddy uses a 13 x 4 with a .46 on his UcanDo.... and while the motor is a bit weak (3d needs lots of torque!) it pulls up nicely with the bigger prop
I've used a 12.25 x 3.76 with good luck....
buddy uses a 13 x 4 with a .46 on his UcanDo.... and while the motor is a bit weak (3d needs lots of torque!) it pulls up nicely with the bigger prop
#6
Sounds like that 10/4 prop is way to small...
I have an OS 46ax on a Twist, a much heavier plane,
with a 12 x 4 prop and it hovers GREAT....
Had a Majic with an OS 46 fx and a 10 X 6 prop and
it would hover with that quite well..
If your motor is running right.. then MOST LIKELY it is the prop...
#8

Joined: May 2003
Posts: 176
Likes: 0
Received 0 Likes
on
0 Posts
From: Clermont, FL
I'm biased toward 4 strokes for hovering. They respond quicker and have more torque at the low end to swing a larger prop which you need from the prop wash. I have one with a Magnum 52 and an APC 12.25 X 3.75 Wide and has tons of authority.
#15

My Feedback: (4)
Joined: Dec 2003
Posts: 363
Likes: 0
Received 0 Likes
on
0 Posts
From: Firestone,
CO
It is amazing what a couple Gyros can do. You could have auto hover/TR on any airplane with gyro's on the ele and rudd.
I knew a guy that had a short-fused bipe, couldn't get it off the ground without going off the runway- so he cheated and installed a gyro for the rudder. He never had another problem with it- except that he never learned how to fly without it.
No gyro's for me thank you[:'(]
I knew a guy that had a short-fused bipe, couldn't get it off the ground without going off the runway- so he cheated and installed a gyro for the rudder. He never had another problem with it- except that he never learned how to fly without it.
No gyro's for me thank you[:'(]
#18
Senior Member
My Feedback: (1)
Joined: Sep 2005
Posts: 319
Likes: 0
Received 0 Likes
on
0 Posts
From: Pardee Village,
MO
Hey Futaba guys, The JR 9303 comes standard with auto hover AND Auto Harrier. and costs 1/5 what your $2500 Futaba costs. The "auto switches are actually variable control sliders on the side of the radio. (lmao)
Now seriously, you might want to add a bit of right thrust to your motor mount if the magic is twitchy in hover. CG 1/2" back from recommended and 2 8-32 washers to left side motor mount bolts got mine hovering steady as a hot air baloon.
Now seriously, you might want to add a bit of right thrust to your motor mount if the magic is twitchy in hover. CG 1/2" back from recommended and 2 8-32 washers to left side motor mount bolts got mine hovering steady as a hot air baloon.




