RunRyder - swash binding

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Compass Knight 50 > swash binding

raspeitia
Heliman
Location: US - WI

Hello,

I need a little help in my setup on my Knight 50 3D. I just got it and am finishing my bench adjustments.

I am having a bit of binding with the swash and mixing arms and the flybar arms as well.

This is currently happening when I have either full aileron/elevator (NOT both) and I move the pitch in either direction towards maximum. As the head rotates it binds when the mixing arms are parallel to the direction of cyclic input.

I am attaching pictures that show where they bind, and I still have about 5deg more to go on the pitch.

Currently I am running +-12deg pitch and +-7deg of aileron and elevator.

I do not want to lose any more pitch or cyclic if necessary.

Any help would be appreciated. Thanks.

Ray A.

03-11-2008 03:43 PM

Adey_Law
Senior Heliman
Location: Bournemouth, UK

the L arm binding on the flybar carrier is probably because the 2 L arms arent parrellel to each other. The way i set them is to lock one of them to the flybar rotate the flybar until that L arm hits the flybar carrier then lock the other so its also touching the flybar carrier this ensures you get full travel there.

as for the washout arms hitting the swash you need to shorten the links from the washout arms to the L arms slightly. they arent supposed to be parrallel at mid stick and its not a problem as they cancel eachother out.

Ade

03-11-2008 05:00 PM

raspeitia
Heliman
Location: US - WI

By shortening the washout to L arm links, will I effectively lose cyclic travel?

Is 7deg normal for this setup? I really don't have a point of reference for a Knight.

Thanks for the tip on the flybar arms.

Ray A.

03-11-2008 05:24 PM

Adey_Law
Senior Heliman
Location: Bournemouth, UK

shortening the links just moves the washout up the mainshaft slightly you wont loose any cyclic. you should be able to get around 9degs if you have the balls on the upper mixer arms in the hole closest to the mainshaft.

Ade

03-11-2008 05:27 PM

Raptor30Heli
Senior Heliman
Location: Oak Creek, WI

Ray - you sneeky ba$tard...you jumpn' ship and flying a Knight50 now!!!!

You've got some 'splaining to do, mister!

Ha!

Good luck with the ship, can't wait to see her out at the field.

-Mike

Team QuickUK Pilot

03-11-2008 06:07 PM

raspeitia
Heliman
Location: US - WI

Ade, thanks for the help.

Mike, the 50 3D looked really cool. I was looking up posts about the 600N and kept seeing coments about the Knight being just a bit better.

Figured I'd be different. I'll bring it to the meeting on Wed.

Laters.

Ray A.

03-11-2008 07:10 PM

eyeflyhelis
Elite Veteran
Location: charlotte nc

also be sure you have the timing set correctly.

only you have the power to make no difference!
**Modefo's Heli's**
K3D!!

03-12-2008 05:37 AM

HOMEPAGE

raspeitia
Heliman
Location: US - WI

I redid the links in the head by the lengths in the manual, and all seems to be good now.

On initial build I set the links up by the manual, but think along the way I ended up changing the dimensions to match the center elevator arm (didn't think I could move the link without loosening the arms from bottom). This time I kept everything pretty close to the manual.

I set the phasing ring by lining up the flybar with the boom and the length of the heli, then I aligned the swash ball with the center elevator arm. Seems dead on to me, I think its good.

Seems cool now.

Thanks.

Ray A.

03-13-2008 04:16 PM

fr8brkr
Senior Heliman
Location: Asheville,NC

Check that the phasing block was set with the blades inline with the boom-not the flybar . I think you may be 90 degrees out of phase.

Problems ? -- Mine are flown in fresh daily

03-13-2008 04:35 PM

raspeitia
Heliman
Location: US - WI

I set the mix ams to be parallel with the blade grips.

See pic above.

Ray A.

03-13-2008 08:25 PM

raspeitia
Heliman
Location: US - WI

Just as an observation,

I was looking at one of our pilots at the field, has a Vibe 90.

And I noticed that his swash plate had notches exactly where I posted that mine was binding at when at max pitch and max cyclic.

I think that JR saw this and made cutouts in the swash where the mixing arms would clear.

See the attached picture of the swash.

Would be cool to have one like this to get even more cyclic.

Cheers.

Ray A.

03-19-2008 03:51 AM

Adey_Law
Senior Heliman
Location: Bournemouth, UK

if you tweek the rods like i suggested above there is no need for the cutouts i get 9degs of cyclic on mine.

Ade

03-19-2008 08:18 AM

raspeitia
Heliman
Location: US - WI

Ade,

I did, cyclic to pitch is good for me now.

It was just something I saw that another manufacturer was doing.

I would imagine, that there would be more or less binding if someone tried to get more pitch or cyclic when at extreme throws on the radio (not using a cyclic ring)

Not that I need anymore pitch or cyclic myself. The Knight flies like it's hopped up on redbull and coffee!

Ray A.

03-19-2008 02:49 PM

Adey_Law
Senior Heliman
Location: Bournemouth, UK

exactly... i think 9degs is plenty!

Ade

03-19-2008 07:35 PM

jstnt
Heliman
Location: Indonesia

Adey, is 9 degree in cyclic could make it binding? And how about setup using OS 50 hyper? pitch and cyclic?

04-02-2008 01:54 PM

raspeitia
Heliman
Location: US - WI

I would Just do like someone else said.

Get as much pitch as possible without bogging the engine, then give the rest to cyclic.

Not sure what mine is now after a few tweeks, but I have close to 12 pitch and 8+ cyclic (with more available yet).

You just need to watch out at the extreme corners in the cyclic (but I'm into Piro Fips yet).

Rolls like its on a wire!

Ray A.

04-02-2008 02:44 PM

jstnt
Heliman
Location: Indonesia

how to setup pitch and cyclic if I used OS 50 hyper cause I got 11 in pitch and engine start bogging

04-03-2008 07:50 PM

raspeitia
Heliman
Location: US - WI

Mine is a brand new hyper 50 and I have no bogging with 12deg.

I am running 2070rpm on the head = 18000 on the engine with the MP5 pipe.

That way when it bogs, it goes in to powerband and governor recovers faster.

Also make sure you are not running too rich. My needles are Low (close to horizontal) and Hight 1.25 turns.

Ray A.

04-03-2008 09:43 PM

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Compass Knight 50 > swash binding

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