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HomeAircraftHelicopterHelicopter Main Discussion › How much slop in main grips is ok?????
01-13-2010 06:14 AM  8 years agoPost 1


Levitown, Toa Baja, Puerto Rico

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I have a 450SEV2 clone frankenstien. The head and grips are from a HDX 450V4. All is installed correctly and has been changed with new parts just to see if the slop gets better. I have had this problem with other grip set ups as well. Obviously no slop is what is wanted but how much is tolerable. The up and down slop seems ever so slight but that small amount in the grip turns into about 3/8" at the blade tips. (325mm).

Is that ok???? I have flown it alot and she flys well for my level. However as I progress I feel that I may stress the heli to much. Spindle bolt failure, blade root failure, etc. I just imagine what the forces must be on the parts going from full + pitch to full neg and the blade tip flapping around.

So.....could someone give an overall guide limit for blade grip slop so that this post might help any size heli with this problem?


01-13-2010 06:22 AM  8 years agoPost 2


Clarksburg, WV

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Usually a "little" bit of lateral movement is acceptable. When the head is up to speed the centrifugal force settles them outward. My Raptor and Vigors had some but my Xcells have none. The vertical movement should be only movement of the fly bar moving in the head dampners. This should have been reduced when you replaced the parts with new ones.

Of course my only experience is with nitros. Electrics may be different.

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