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View Full Version : Flybar Paddle adjustment/repair


slikrx
01-31-2007, 07:38 PM
I THINK I need to level/align them on my CPP. I looked trhough a bunch of Finless' T-Rex vids but couldn't find one that talks about adjusting them.

Is there such a video? and if so, will it apply to my CPP?

I'll try to dig through bladecprepair.com, but I'm not very good at finding stuff there yet...

As for the "why"? :roll: I blipped the throttle a bit too much controlling my tail on the ground. The small breeze caught my CP and blew it into the grass. No obvious damage to anything but the blades did swing around and contact the head. Now I have a vibration. I cant tell, but there MIGHT be a slight different in AOA on the two paddles.

Also, I'd like to add a second set of weights onto the flybar, and I need to know how to pur it back together before I take it apart... :oops:

carlo_the_wonder_frog
02-01-2007, 06:41 PM
It goes back together just like it comes apart.

slikrx
02-02-2007, 07:17 PM
Well, part of the problem was trying to figure out exactly what & how things needed to come apart.

I was able to figure it out with some help over at the cprepair site.

The hard part was actually realising that the paddles are threaded onto the flybar. Fortunately, I hve a crash kit that has a spare flybar. And after looking at it, realised it was threaded... :oops:

Anyhow, it turns out the flybar had a 0.5 mm bend (one side flat, the other side was up that much) And after much tweaking, I was able to make the flybar have a 2mm bend :arggg: :bomb:

Thankfully, I had the spare. I got it all assembled with the extra flybar weights and re-balanced the blades. I aligned the paddles by eye (per the website) but I should probably get a blade level... :roll:

I flew it a bit, but the head was STILL vibrating a bunch. If you watched the screw on the top of the rotor shaft, it would move 2-3 mm as it spun (higher speed)

A friend with a CP helped me correct the tracking and I installed a new (and balanced) set of symmetric blades, and all is now well woth my CPP. :D


One note for some folks: the flat bottom blades are actually LESS stable and more twitchy to fly/hover than the symmetrics. Strange, but for me, it's true!

carlo_the_wonder_frog
02-02-2007, 11:28 PM
Good to hear you got it all working.

slikrx
02-06-2007, 08:21 PM
With the weights on the flybar and the balanced & track adjusted helo, it is MUCH more stable and less twitchy. I've only dinked around for 1 battery pack, but I can definitely see a big difference.

It still tends to "fall"/slide once it leaves hover, but it is much more predictable.

Now, back to RADD :roll: :oops:

Oh, and try out the 1,300 MAH battery I bought to see if that mellows it out at all...