Tiger50 Break-In Vibration

[Charliedontsurf]

Hi Heli-Freaks!
So I'm breakin' in my OS 50 Hyper engine in my Tiger50 with no main blades in, held down with a 2x4 across the skids and two cinder blocks ala Ray's Authoritative tracking technique, and at half throttle, everything is vibrating and jiggling...The throttle servos, aileron, elevator servos too! Ihave a new NiMH 2700mAH 4.8volt battery at the Rx, I've cycled it (charge and discharged) atleast three times on my Multiplex charger...Half way through the tank of Coolpower 15% fuel, it starts to get twitchy for a minute or two, and then it smoothes out...
WTF? Any suggestions????
Thanks
Dr. Franz at the Jersey Shore

[WayneBrown]

Put the blades on it and break it in in the air.
What you are doing is the most dangerous, assinine how-to ever put in print.
Not bashing you in any fashion, but BURN THAT BOOK!!
Anything that is contained within the covers is dated, and likely dangerous.
Now, as far as your glitching is concerned, make certain that you have all wires away from the backs of other servos, not tangled, and that your antenna is away from everything and anything that can pass electrical energy through it.
Look at the way you have the starting adapter mounted to the start shaft, too low and it will rub the upper bearing. Also look at the alignment of your engine to the clutch stack. Loosen the motor mount bolts, rotate the engine through a few times by hand, and re-tighten.
If possible, get a pic of your installations, and post them so we can see your build.

[Charliedontsurf]

Put the blades on it and break it in in the air.
What you are doing is the most dangerous, assinine how-to ever put in print.
Not bashing you in any fashion, but BURN THAT BOOK!!
Anything that is contained within the covers is dated, and likely dangerous.

If possible, get a pic of your installations, and post them so we can see your build.

Hi Wayne,
I got the idea of running without main blades from Paul Tradelius' Heli Book, second edition, 2002...The idea of using the 2x4 and blocks to hold down during blade tracking was from Ray's new DVD set-up video released in 2005...Is this info outdated???? If so, what new latest info on set up and break-ins is available? Anyway, here are some photos of my wiring/set-up...This is my first Nitro heli and I can hover a T-Rex pretty well tail in and some figure 8 turns, but I'm trying to break-in this Tiger without crashing it...I've got it up on a Rotopod to start the process with the main blades....Thanks for any comments/cricisms and thanx for the clean-up info as well...
Cheers,
Dr. Franz in NJ

[DebianDog]

You can break the motor in by making the helicopter light on the skids (or in your case a rotopod) just almost hover for a few seconds, then let the heli rest. If you new to nitro helicopters you will want a short rest!

Best way to check tracking to to bring in to a hover and look at it. If it is out. Mark a blade and turn that one. If it gets worse you turned it the wrong way ;)

Just FYI: Watch the wiring in front of the gyro. Mine came loose on my Tiger 50 and the belt ate the wire.

[WayneBrown]

first and last picture shows me that you A.) like tie wraps too much, and B.) that your start adapter is too close to the bearing.
Here are my suggestions:
Replace the tie wraps, and spread your wiring a little bit. try either looser tiewraps or Velcro 'one wrap' that is cut in half lengthways.
Tape the cyrstal in to the reciever!!!!!!! I cannot emphasise this one enough.
Seperate the gyro wiring from other servos, at least at the gyro. I bunch my gyro wires a LOT looser than that. Tape the connections between gyro and tail servo. It coming unplugged SUCKS.
Loosen your start adapter, apply green locktite to the inside of the adapter and re-install with a little more space between it and the upper bearing.
It could be the angle of the camera, but it looks as if the engine is leaning a little bit, head forward.
Find a straightedge and align it with the mounting lugs on the engine, and check again for alignment between it and the center of the clutch.
Really, the wiring looks great, but I believe if you cut that loose and let some air between the wires and raise the start adapter your problems will go away.

As for a rotopod, the singlemost worstest crash I EVER had was on one... It might just be my luck though..
As for tying the chopper down, anyway you look at it it's not good. The blades pitch can overwork the engine, and you are stirring up dirt which will likely end up damaging your engine.