Last Sunday after weeks of practice on my simulator I try to do the PiroFlips, I managed to do a few good ones the on my second flight I did one piroflip ending up side down. I start to correct position pulling stick back (elevator) then was a noise explotion one blade stop so I turn engine off while the heli drop from 300 feet.
After an inspection I notice a Boom strike one of the double links was broke the one on the blade that hit the boom.
Firts I blame on the doble link bud I did some research and I found two more cases one in florida and other in UK.
They said this problem happens because the dampers give and the blades when you pull back get closer to the boom.
I'm fixing my raptor this week, replacing the dampers for new ones then I will try againg.
If this don't work then I will extent the mast 1cm.
If any doing real tough 3D ?... any report on this incident... or is only three isolated cases.
thanks for any input or Ideas
Luis
02-05-2003 Over year old.
Alan Szabo Sr Key Veteran Location: Las Vegas, Nevada
Boom StrikeIs this a new V2 50 or and older V1 50? If it is a new V2 50 there is no possibly way the dampener can be worn out already. Most probably cause would be the blade were to loose in the grips, and a eng boug from to much cyclic input made the blade swing fwd, then down to the boom. Tighten them blades in the grips pretty tight.
02-05-2003 Over year old.
LAA Heliman Location: South Florida
I'm sorry for got about spec.
Raptor 50 V1
Mavrikk 600 carbon blades
I really think that the problem was the dampers, I will tray againg this weekend after real good inspection if it happem again I will upgrade to a 50V2 I'm geting into more advance 3D manuevers but I don't want to risk my excel 60($$$)
Luis
02-05-2003 Over year old.
Alan Szabo Sr Key Veteran Location: Las Vegas, Nevada
And it was also flown by someone who is very good at piro flips
I've seen the mid air boom strike a couple of times on the Raptor 30. With the new V2 head on the 50, I would doubt you could hit the boom even if you tried. There is a big difference in the rigidness between the two. With the V1 it would definately be a possiblity. Also as stated above, make sure your blades are real tight too.
Shawn
02-05-2003 Over year old.
B.Waitkus Veteran Location: Cranberry Capital (Carver, MA)
How tight do the blades have to be?
02-05-2003 Over year old.
sincity Veteran Location: Pasco, WA
I personally make mine pretty dang tight. You shouldn't be able to hold the ship sideways and have them move. I would tightened them down enough so if you shook the heli holding it sideways, they don't move.
Mine are about as tight as they will go. Going to start doing some aerobatic autos and sure the heck don't want them folding on me
Shawn
02-05-2003 Over year old.
LAA Heliman Location: South Florida
Thanks guy for the advices, I definitely will check for every detail before I try again. I wonder if I’m doing something wrong I notice in the video the piruet is opposite to mine, any way I will know pretty soon.
Thank you guys
luis
02-05-2003 Over year old.
Mr_Magoo Veteran Location: Reality & Nevada
I chopped off two booms on a V1 R30. One was during a high speed outside loop. The other was during a high speed inverted funnel. The blade grips were tight and headspeed was high. I can do the same things with my Sceadu all day and no problem. IMO, the 5mm to 6mm spindle upgrade from the V1 to the V2 is the most significant improvement. You might want to put a V2 head on that V1. I think it will run you about $90. How many chopped off booms before it pays for itself. The V1 head is fine if you are smooth. But when trying to do something for the first time, it's hard to be smooth.
HTH,
Magoo
02-05-2003 Over year old.
johnboy Veteran Location: South Lincolnshire nr Peterborough UK
Welcome to the Boom Strike Club :)I'm going to the quick UK V2 metal head and metal grips, Should sort the bugger out once and for all .
how to prevent boom strike ?how to prevent boom strike on raptor V1 >? what parts do i need ? and how much everything will costs ?
02-05-2003 Over year old.
Indrid Key Veteran Location: Hamburg, NY
first: look on heliproz or ronlund for TT merchandise.
second: throw rap v1 in trash
third: buy raptor 90
j/k
02-06-2003 Over year old.
CraigH Heliman Location: Maidenhead, Berkshire, UK
Hi
I've boom struck a V1 Raptor 50 doing Outside backward loops.
The blade grips were pretty tight and head speed high. Luckily
the only damage was a dented boom. I looked at the damper rubbers
and they were quite soft (well used)!
I have now upgraded to a V2 head. The problem does not exist anymore.
good news!!!
I just order a RAP50 V2 I should have it Monday, I'm planning to use the new dampers they have two type blue and red does any have try it yet?
02-07-2003 Over year old.
extremeflying Veteran Location: Thailand
dampers ?where are the dampers ?/ and how much did v2 head cost ?
02-07-2003 Over year old.
col Veteran Location: U.K. Ipswich.
dampersbloke, the V2 comes with the blue ones so don't buy any before monday..
later
colin..
02-07-2003 Over year old.
LAA Heliman Location: South Florida
dampersI bougth the 50 V2 Kit, from Heli hut and you can see the dampers at them site helihut.com.
I sold the the 50 v1.
