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Logo 400
Installing KBDD Dampeners on a Logo 400?
PA Heli-Girl

Heliman

North Central PA

Hi Guys:

I'm about ready to start building the main rotor head on my Logo 400. I have an orange set of KBDD dampeners that I am going to install. When I installed them on my 600, I replaced two of the mikado rings with the KBDD dampener and kept the third mikado ring in place.

On the 400, I don't know what to do. There are two diferent sized rubber dampeners and a hard plastic one. I am assuming that I want to replace the hard plastic one but which rubber dampener do I remove, the small one or the larger one? Also, just to confirm, radius side goes in first and flat side faces out when installing the KBDD dampeners, correct?

Also, for installing the Futaba 9650 servos, the servos come with self tapping screws with no locking nuts to secure. I bought the Custom Heli Parts servo plates and want to install the servos using locking nuts. However, I'm not quite sure what size screws to use. The 2 mm look too thin and 2.5 mm look like I'd have to hog out a lot of material on the frame's servo holes. Any recommendations for screw size and length?

All feedback is greatly appreciated.

Regards,
Mair

*Flyin' with a purpose*

02-20-2010 Over year old.
OICU812

rrMaster

Edson, Alberta, Canada

I still used the screws for the servos, without issue. As far as a botl or screw, you just need it secure, anything you could get to work with these plates you got will work as once its snug and in position that should work. KBDD dampers, don't advise them to be honest. The best dampers for how the heli likes in flight are the stock, I tried mid, medium hard etc and messed a bunch only to find the best was what they provided. I suppose it can't hurt if you want to tinker but I can say stock works very well indeed.

...Once upon a time there were Nitros, flybars and frequency pins...

02-21-2010 Over year old.
PA Heli-Girl

Heliman

North Central PA

Thanks for the feedback, Shawn. A few people PM'd me too and also advised that I stick with the stock dampners. So that is what I did. I plan on running a lower head speed so the stock dampners will be a better choice for me than going with the KDBB orange ones.

Got the main rotor head built and all of the connectors installed on my ESC and 3 battery backs. I originally bought a 17T pinion but I think a 16T will be better. I ordered it from Ready Heli so it should be here by Wednesday or Thursday. I won't install the servos until after I swap out the pinion. My build is coming along slowly but surely. I'll post pics as soon as it resembles something close to a heli, heh, heh!

Have a great evening!

Regards,
Mair

*Flyin' with a purpose*

02-21-2010 Over year old.
garyinbg

Heliman

Bulgaria

Hi folks, just a note about the damping.

The stock firm do work well , however if you were to go to the V-Bar site http://www.vstabi.info/de/forum and ask either of the designers for the system, Rainer or Ulrich they will advise 'the stiffest dampers you can get',

Others as I say do work well but the V-Bar is both a reactive and proactive system and works best when it has fast accurate information fed back to it from the Main blades through the heli and the link there, is of course the damping rubbers.

No rights or wrongs, just different qualities.

Cheers

Gary

Esprit Model Flight Team

03-07-2010 Over year old.
OICU812

rrMaster

Edson, Alberta, Canada

Gary that was the case with 3.16
many moons ago. Not so much case with 4.0
however.

...Once upon a time there were Nitros, flybars and frequency pins...

03-07-2010 Over year old.
gravydrive

Senior Heliman

Jacksonville, FL

Mair, did you figure out which fasteners to use? I used 2.6mm machine screws and nuts for cyclic and tail servos (9650/251) and they work very nicely.

Murphy's Law Denier

03-07-2010 Over year old.
garyinbg

Heliman

Bulgaria

Cheers for the update on damping V3 and V4 but the info I gave came from Rainer less than 3 weeks ago when I changes half my craft over to V4.

Still, I am sure the originals will be fine.....

regards

Gary

Esprit Model Flight Team

03-08-2010 Over year old.
PA Heli-Girl

Heliman

North Central PA

Hi Everyone!!!

Thank you for checking up on my build. The feedback is awesome!

Hi Gary!!! Great to hear from you! Bill and I are still hoping to get to Ircha this year. Its somewhat up in the air. My company has enrolled me in an accelerated training program that will take place over next 12 months in two week intervals. One of the phases lands during the week of IRCHA. I am freaking out but the VP of Engineering said he would try to accommodate me somehow. Keep your fingers crossed for me ;-)

Hi gravydrive: My build has been at a stand still since the 20th of Feb. due to an insane work schedule. I have not installed the servos yet although I did pick up various options for hardware to do the job. I still may try to come up with something creative with the stock screws. I also want to swap out the pinion gear, which did arrive as well. I'll be sure to keep y'all posted.

Regards,
Mair

*Flyin' with a purpose*

03-09-2010 Over year old.
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Installing KBDD Dampeners on a Logo 400?
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