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Boca Bearings . Modefo's RC Helicopters . XHELI.COM

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Compass Knight 50 > Tracking problems, not the spindle
 
 
helimatt
Key Veteran
Location: Lafayette, IN

Anyone have tracking issues on the Sport, not a bent spindle? I have gone over the head assembly, found some minor things which were put right, checked and double checked the paddle and main blade pitch, made minor adjustments but no joy.

The heli will track okay when I lift off, then either as soon as I give it a collective bump, or after some flying around (even basic circuits and some rolls), the tracking is out, way out. Hit throttle hold, and the trackings back fine again as it autos.

SAB 600mm carbon blades, stock Sport head, 6mm spindle shaft. I didn't have any issues when I first started flying this guy (about 20 flights), then got some similar tracking problems which turned out to be a bent spindle (6mm), replaced, flew a couple flights fine, but had motor problems. Now rebuilt the OS Hyper, new pipe (Align, which is great), got tracking problems.

I am going to tear into the grips/bearings to see if there's an issue there, then try different blades.

Feels like my Caliber 30 woofing issue all over. In that case, stiffening the servo tray solved it for me. Should not be a problem on this one...

Never, ever, ever, ever give up.
04-07-2008 03:17 PM
 
 
phattalon
Senior Heliman
Location: Muncie In

Worn dampners can cause it also.

Jason Russell
04-07-2008 03:19 PM
 
 
helimatt
Key Veteran
Location: Lafayette, IN

Thanks, I'll change them, but the damping "feels" very stiff still. Maybe re-greasing the dampers/spindle too.

Never, ever, ever, ever give up.
04-07-2008 04:23 PM
 
 
Krunder
Heliman
Location: Lemvig, Denmark

Make sure that the trustbearings in the bladegrips are in good shape, and installed correct.
04-07-2008 05:00 PM
 
 
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Compass Knight 50 > Tracking problems, not the spindle
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