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Miniature Aircraft Nitro/Gas Helicopters > Breaking tail levers
 
 
derekandjennys
Senior Heliman
Location: Cedar Rapids, IA

Anyone have any ideas as to why I would break 2 in a row?
Stratus with closed tail box 3D plastic lever with 601/BLS251 and limits at i think 140 with no binding and 15 mm arm and servo on tail boom with a straight shot and perfectly smooth tail.Start and stop delays at 15 and 40 and 3D mode. The grips are several years old as I have not run it in for a couple years now. I did go through and replace some bearings that felt less than perfct and replaced tail gears with some barely used ones while it was down after breaking the first. I was also runnung 110s before but have some 105 NHPs on tonight when it broke. The tail lever was also several years old with very little use.
One thing is the break has a diagonal line where half is wet and half is clean like it half broke and got fuel soaked, both exactly the same.
Do I need a stronger lever or is there something I am not thinking of. I am getting a little harsher with the tail and may have been reversing from a piro to piro-flip but feel it should handle it. There is a Fury for sale that has an over/under metal tail lever that looks older but solid. Is anyone running the FAI tail lever on the left side for extreme freestyle?
05-29-2008 07:58 AM
 
 
QuickSilver
Veteran
Location: Cherry Hill, New Jersey

Tail levers

How old were the two plastic levers that broke? Where were they stored? Plastic is made with oil and can be damaged by heat and constant direct sunlight causing it to dryout and become hard and brittle, now I am not saying this was the cause but it is something to consider. Also where the levers in question ever involved in a crash as some point that possibly put a stress crack in them that went unnoticed. This is the first I am hearing of a tail lever breaking from just flying, assuming what you say is true about your setup being correct in every manner.

Kyle

Life is not measured by the number of breaths we take, but by the moments that take our breath away.
05-29-2008 12:10 PM
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carcrasher
Key Veteran
Location: east coast

Did you use some type of cleaner before you put it away? If so, may be it made the plastic weaker?
05-30-2008 12:22 AM
 
 
derekandjennys
Senior Heliman
Location: Cedar Rapids, IA

As I said not crashed and the setup is perfect. And they are both several years old. No cleaners and it was stored properly.
After the first I did switch to only 1 rod support with the servo on the boom, added the other gears, a new teflon heatshrink and checked the bearings.
I will say that both times it broke I was pushing it harder than ever, almost angrily. And I also have a pretty fast piro rate. But still. I can't see the load in the air being that great. Something else is going on.
05-30-2008 04:09 AM
 
 
rada70
Key Veteran
Location: upstate, NY

Where did it break? Did it break where the ball goes in to or the arm itself? I would also check the slider.

Just do it.
05-31-2008 06:20 AM
 
 
kthane
Veteran
Location: Pensacola

What's a 3D plastic tail lever? Part number or picture would help here.
06-01-2008 07:07 AM
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Miniature Aircraft Nitro/Gas Helicopters > Breaking tail levers
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