View Full Version : head goes out of track
Scoopy
09-09-2006, 03:33 PM
Im just starting to fly in idleup, and it seems when I do, my head starts fluttering and goes out of track. Its an EVO 50 with OS .50 Hyper. No governor, im not even sure what my headspeeds are..
Sam
BarracudaHockey
09-09-2006, 04:51 PM
Check your spindle to see that its straight and verify your thrust bearings are installed correctly (there's a right and wrong way to install them)
Wood blades or carbon?
Scoopy
09-09-2006, 11:13 PM
mah carbons, I did take the spindle out and check it. Its straight.
Sam
BarracudaHockey
09-10-2006, 08:51 AM
In that case the only time I've seen a Sceadu with woof was thrust bearings bad or installed wrong.
mudbogger2
09-10-2006, 10:31 AM
What are you using for a collective servo? Have the head dampners been in for a while?
im not even sure what my headspeeds are..
Need to get that checked. Overspeeding can cause some problems.
Scoopy
09-10-2006, 11:12 AM
Collective is JR DS8611 :) I know kinda overkill, but who cares. :) Im only on my third gallon of fuel so the dampners should be allright, but here is what I did this morning. NO test flight yet, but I probably found it. One thrust bearing was installed backwards. I didnt even know you could do such a thing. :) I went ahead and replaced the dampners and spindle this morning since I had a few spares. Im going to try it this afternoon and see what happens. As for Headspeed, Im about to order a Multigov from www.aerospire.com. That should set me straight on that.
Thanks for your advice, and I will let you know how it goes.
Sam
Scoopy
09-10-2006, 12:55 PM
Allright, no good. :dontknow The only thing it could be now I guess is overspeeding the head. I guess I could turn down my throttle curves and see what happens. I really need to get that governor.
Sam
keith shaw
11-17-2006, 07:56 PM
Overspeeding, plus make sure the collective servo is tight, tight, tight and the push/pull system is slop free. I once found my T arm on the push/pull collective was loose, but I didn't notice it until the heli started acting FUNKY!
Any ball links have slop or play in them?
If you have crashed, or had any contact between teh blades and the ground, check the center hub of the head. I have had three of them bend. Not much of the mainshaft sticks into the hub, so it is a weak point. If you have the blue one, it works great if you have a spare radius pin from the swash and a ball with a slot cut in it, to make a ball link reamer. :!: