trying2fly
I think I have been behind the door when they passed out ideas on mtning wheels to foam wings. I keep tearing them out on landing. Sometimes the planes are too heavy, sometimes the wind-landings are too rough, etc. Just wanted ideas someone has come up with that would make landing gear on 50+ inch wingspans strong enough to keep from tearing out. Thank for any ideas. chas
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JTiger
Do
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I think I have been behind the door when they passed out ideas on mtning wheels to foam wings. I keep tearing them out on landing. Sometimes the planes are too heavy, sometimes the wind-landings are too rough, etc. Just wanted ideas someone has come up with that would make landing gear on 50+ inch wingspans strong enough to keep from tearing out. Thank for any ideas. chas


Is there a rigid/reinforced spar you can attach the gear directly to?
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ScottLott
If the landing gear is tearing off or punching through it's always because you don't have the stress of the landing gear distributed across a wide enough area of foam.

For lighter planes I found curving the landing gear metal into a square wave pattern several inches wide then gluing that on to work very well. The square wave pattern should glue against the bottom with as much wire resting against the fuselage as reasonably possible.

If square waves don't do the trick, get some balsa sheets and epoxy the landing gear with the square waves to the balsa, then epoxy the balsa to your wing. It's heavier but it's a surefire method to getting the landing gear to stick around.

If you're STILL having trouble even with balsa sheets, double layer the foam where you plan to mount the gear and drive epoxy coated metal screws through the balsa sheet into the double layered foam.

At that point a gear collapse will take half your plane with it.
- Scott Lott
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trying2fly
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If the landing gear is tearing off or punching through it's always because you don't have the stress of the landing gear distributed across a wide enough area of foam.

For lighter planes I found curving the landing gear metal into a square wave pattern several inches wide then gluing that on to work very well. The square wave pattern should glue against the bottom with as much wire resting against the fuselage as reasonably possible.

If square waves don't do the trick, get some balsa sheets and epoxy the landing gear with the square waves to the balsa, then epoxy the balsa to your wing. It's heavier but it's a surefire method to getting the landing gear to stick around.

If you're STILL having trouble even with balsa sheets, double layer the foam where you plan to mount the gear and drive epoxy coated metal screws through the balsa sheet into the double layered foam.

At that point a gear collapse will take half your plane with it.

Makes perfect sense....I will try your first suggestion then continue if it does not hold. Thanx a lot Scott!! chas
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whatmovesyou
Been using a surefire method for landing gear for years. It took me about 4 months to come up to handle grass, asphalt and dirt for takeoffs touch and go's as well as landing. Usually the foam plane folds due to the battery slamming down(nose gear is usually close to it) and then main gear goes. Way to solve it is to take balsa wood(main gear) and distribute the load to the side vertical frame as well as the bottom.
BE SURE YOU PUT THE MAIN GEAR OVER THE CARBON SPAR FOR THE WING. Now, the upward force when crashing is distributed to the spar. Yes wire will bend, so now just straighten it out.See other thread.


rcpowers.com/community/threads/update-on-landing-gear.17632/

For nose gear, use balsa wood(dimension are in other thread) the length from nose to motor mount and hot glue. This latest mod now give plane stiffness from nose to torque due to motor. Now the battery force of deceleration is distributed to the balsa rather than the destruction of foam Then find stiff wire and make NOSE WHEEL LARGER SO IT HANDLES CLUMPS OF GRASS AND BEND ABOUT 45 DEGREES BACK. That allows plane to go forward rather than flip or veer off course either on takeoff or landing.

I also have used a servo to control direction by putting a tube in fuse and bending wire 90 degrees on top to hook to rudder servo.


Last, elevate nose about 5-6 degrees to help shorten takeoff lengths.
I like to design and fly unique planes.
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trying2fly
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Been using a surefire method for landing gear for years. It took me about 4 months to come up to handle grass, asphalt and dirt for takeoffs touch and go's as well as landing. Usually the foam plane folds due to the battery slamming down(nose gear is usually close to it) and then main gear goes. Way to solve it is to take balsa wood(main gear) and distribute the load to the side vertical frame as well as the bottom.
BE SURE YOU PUT THE MAIN GEAR OVER THE CARBON SPAR FOR THE WING. Now, the upward force when crashing is distributed to the spar. Yes wire will bend, so now just straighten it out.See other thread.


ttps://http://www.rcpowers.com/community/threads/update-on-landing-gear.17632/

For nose gear, use balsa wood(dimension are in other thread) the length from nose to motor mount and hot glue. This latest mod now give plane stiffness from nose to torque due to motor. Now the battery force of deceleration is distributed to the balsa rather than the destruction of foam Then find stiff wire and make NOSE WHEEL LARGER SO IT HANDLES CLUMPS OF GRASS AND BEND ABOUT 45 DEGREES BACK. That allows plane to go forward rather than flip or veer off course either on takeoff or landing.

I also have used a servo to control direction by putting a tube in fuse and bending wire 90 degrees on top to hook to rudder servo.


Last, elevate nose about 5-6 degrees to help shorten takeoff lengths.

SUPER!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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