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HomeAircraftHelicopterMiniature Aircraft Whiplash & Fury 55 › Fury Expert tail slop?
07-21-2002 05:56 AM  16 years agoPost 1
jzuniga

rrApprentice

gig harbor, washington

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Well I now have 3 tank fulls through my Fury Expert, and all I can say is WOW!...the question is this: There appears to be quite a lot of play in the tail blade holders. Not in and out but, side to side? Everything else seems tight, and looking at all my other heli's this seems normal, but these have more play than I feel should be normal...Is this normal with the Fury? It almost seems like the bearings in the tail blade holders are too small or the holders themselves are too big? I never have noticed this before in any of my other heli's until a friend of mine pointed this out this morning after an awesome flying session....jz

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07-21-2002 07:06 AM  16 years agoPost 2
Dr.Ben

rrMaster

Richmond, VA, USA

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Absolutely do NOT worry about that free play. The play you describe is a result of the single radial/single thrust race design of the Fury's tail. The radial bearing is snug in the blade grip, and the bearing's ID is snug on the tail hub, but there is some normal "give" between the inner race of the bearing and the race inside the bearing. The thrust race does nothing to stabilize this freeplay because it is a loose fit in the grip, and necessarily so. The freeplay seems so large because the pivot point lies just off the center of the tail hub, and there is a 100mm+ moment arm attached to it (the tail blade). When the model is up and running, I promise you that those grips are held out slop free by centrifugal force. I know a lot of MA team pilots, and I think most will agree that you could swap at the triple ball bearing tail on a ProIIK (stock on that model, with none of the freeplay you describe), and they wouldn't know the difference. I know I couldn't tell when I flew ProII's.

Enjoy your new model. Side to side play in the tail grips and a little endplay in the tail grips are non-issues in this model.


Ben Minor

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07-21-2002 04:29 PM  16 years agoPost 3
G. Williams

rrNovice

North Carolina

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No need to buy a triple bearing conversion for the plastic tail rotor grips. On the plastic grips I have the bore for these bearings (thrust and third, or second radial bearing) is tapered and the third bearing is useless anyway. In my opinion the only solution for someone who wants a solid tail rotor is to install the metal grips and third bearing. This setup doesn't flop around like a fifty dollar swap shop heli. In the instructions that I have MA states; you "MAY" see side play in each blade mount. I interpeted this to mean that side play might be seen from time to time in one or both blade mounts. Then the instructions go on to say that this play that you "MAY" see is normal. Now if this is true, is there a problem with the grips that "MAY NOT" have this play? Neither the Robbe Nova or the JR Venture or the MA metal grips have this play. Someone has missed the boat. I would like to see a good logical explanation for this play in the tail rotor grips other than the instructions say this or that. When up to speed, do the grips center exactly each and every time? If the grips do center, why is the play needed? If the grips do not center, might this cause a balance problem? Or uneven pitch? Or the radial bearing binding? Again, get the metal grips and third bearing conversion if you want or need precise tail rotor control. Later,Gerald.

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07-21-2002 11:01 PM  16 years agoPost 4
ExtremelyFurious

rrApprentice

Mobile, AL

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Are you actually having a mechanical problem or just a hard time dealing with the amount of freeplay in the grip. I have the same freeplay you have desribed and have had no noticeable problems.


Scott

[color=blue][b]Put A Fork In Me...I'm Done[/b][/color]

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07-21-2002 11:06 PM  16 years agoPost 5
jzuniga

rrApprentice

gig harbor, washington

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EF,
no, no mechanical problem...just like I said in my post the heli is flying awesome, and upon post flight(like I do with all my heli's as I clean them) I noticed, what I thought, was excessive play. But, I guess this is normal...thanks
jz

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