I always been aware of this problem and tryed to prevent it at all costs.
Red dampers Quick Uk hub Good main blades ( also keeping them tight ) Ciclic degrees no more that 5.5º
This sunday i was enjoyng my recent manouver...the chaos. There i was when getting to upright position the heli did not reacted so well ( In my head i thought it was my fingers to blame ). Tryed to correct it and continue with the manouver and when the heli got up side down .... it exploded !
I couldnt do nothing but to see it coming down
Result:
The body it self was ok ( except the frames that snapped where the boom support tubes attach ) My beautifull carbon NHP PRO main blades broken 1 tail blade Tail case broken Belt broken Tail boom almost unrecognizeble Some links Pitch servo loose ( maybe broken gears ) Spindle Carbon tail fin and tail plane Both main grips with ball screw broken
I'm not sure but i think it was due to a bad/loose link that may have caused it
It's hard when it's not dumb thums .
Keep it up...literally
07-23-2007 Over year old.
MAVRICK Veteran Location: Las Vegas NV
dang man, i hope you get it back up and flying soon
07-24-2007 Over year old.
Rui_JC Veteran Location: Portugal
Well guys,
after inspecting the parts while dissasembling my crashed raptor i noticed more damage.
The servo tray is broken, one servo case damaged, etc.
But one that surprised me was the damaged starter shaft.
It broke right in the clutch !!!
Never seen anything like this !!!
Check it out...
.
.
The clutch is a quick uk heavy duty. I hope that it's bearing is ok
borneobear Senior Heliman Location: Kuala Lumpur, Malaysia.
Tail fin survived though.
08-28-2007 Over year old.
Rui_JC Veteran Location: Portugal
borneobear,
the tail fin it's cracked also on the top side
King_Ice_Flash,
The starter shaft is the thunder tiger stock. the frame is cracked only at the boom support screws BUT...if you take a look at the picture you can see that the mufler is not quite aligned with the frame. I think it's ilusion of the broken frame as i inspected both mufler and engine and they are Ok.
BUT...there are markings in a couple of tooth in the grey gear as i noticed 2 teeths a bit white ( almost cracked ? )
Keep it up...literally
08-28-2007 Over year old.
King_Ice_Flash Heliman Location: Wales, WI
I'm just hoping that it didn't bend the crank. That was a serious shock to break the starter shaft.
08-29-2007 Over year old.
Rui_JC Veteran Location: Portugal
i didnt think of that !
that means i have to open the engine...
I was hoping i wouldnt have to do that
.
Keep it up...literally
08-29-2007 Over year old.
Rui_JC Veteran Location: Portugal
Well...for some more updates...
i'm finally rebuilding my raptor.
Got all the parts except for a couple of grip bearings.
I thought they were good but...damn...
they spin ok but the sheld is damaged.
Also...this is how the dampers looked like when i removed the head.
.
Keep it up...literally
10-08-2007 06:15 PM
colsy Elite Veteran Location: Cambridge, UK
Judging from your activity on here (i.e far from stupid)
I would put my 'bets' on a link failure.
I had a failed main blade grip link on a Raptor 90 SE.
I also had a boomstrike with my R50. I was doing some FFF pirotictocs (moving the heli across the field while doing pirotictocs).
I've heard that many Raptor owners have crashed their helis because of a boomstrike. It'd be interesting to hear how many Align pilots have crashed their trexes because of the same reason?
I'm still not very certain about what may have caused my boomstrike. I managed to do the caos with them before...untill that day
Worn dampers is one option on the table.
Lesson learned !!! Now i have inflation dampers and always check them during maintenance!
.
Keep it up...literally
10-26-2007 05:57 PM
Jimmi Key Veteran Location: Southern Ca. U.S.A.
That sucks man, I was going to add that with all the parts changing I would defintely go with new bearings but I see you got that covered already. Don't forget it took alot of force to break that shaft, imagine the force it put on the bearings. Look at it this way, once you rebuild it you know you got new parts in instead of second guessing yourself on parts and what ifs. A bad bearing could drive you bonkers. Its better to change them out then to second guess yourself. Good luck on your rebuild, Jimmi
A computer once beat me at chess, but it was no match for me at kick boxing
10-26-2007 06:15 PM
Rui_JC Veteran Location: Portugal
I agree Jimmi,
the worst thing in my mind is the clutch bearing !
That clutch is a quick uk clutch...not very cheap and that is one bearing that cannot be replaced !
will try it as is
.
Keep it up...literally
10-26-2007 07:55 PM
sceaduboy Senior Heliman Location: London, UK / Hong Kong
Is it welded in, if not, heat the clutch up, and tap the bearing out, put another one in.
Good luck
Evo 50, Rappy 90, T-Rex on the bench, need rebuilding
