align 500e fuselage vibration

[nitrouspete]

Hi,
Anyone have a vibration around the upper part of the 500e fuselage. The Trex by itself has no vibration. Any ideas. I already put foam in the tail boom to quite the vibration in the tail and that's gone, and might try some foam inside the body as well.

T Rex in a 500E body. Cool to look at for sure though.

[odieser]

I had a similar problem with my hurricane in a jet ranger fuselage. used the canopy mounts and extended them with some spring flat bar ( something that I could bend but not too flexable) to supprt the sides of the fuselage near the top. Try something like this too much foam and there will be too little air flow. Hope this helps
I found this on the century site on one of the fuselage installs here is what the suggested with modification it can work for you its what I did
http://www.centuryheli.com/support/manuals/twinstar/twinstar_pdf/5_step2.pdf

[nitrouspete]

Thank you, I will try it this week end.

[northcarolinadan]

let me know if this woks, i have the same problem, totally vibe free out of the fuse, i have tried foam both sides near the top with the same results..could be the 430l motor is not up to the task..

[RChristopher]

I used a piece on minicell foam as per the attached pic.The outer edges fit snug under the fuse, and the foam is slit to slip onto the upper frame edges. Works for me.

Bob C.

http://i14.photobucket.com/albums/a328/n50482/Helis/FoamDamper.jpg

[nitrouspete]

Hi, thanks for all the help. I used the foam fwd of the main rotor to keep things more stable and I also forgot that I had changed my pinion gear and never looked at how it changed my head speed. I had to lower the head speed a bit to overcome the vibration. I am running a 430xl motor with a 13 tooth pinion and no vibes between 65-75% throttle. Any higher and I get vibrations. I'll also do some more testing as soon as my time permits.

Keep it in the air!