View Full Version : SWASH WOBBLE WITH NEW MAIN SHAFT
JOSE MUNIZ
06-09-2008, 04:08 PM
NEW TO THE ADDICTION/HOBBY. BETL CP ARRIVED 14 DAYS AGO, FIRST CRASH 3 DAYS AGO. BROKEN SEASAW, BENT PADDLES ROD, BENT MAIN SHAFT.. REPLACES ALL BUT NOW SWASH HAS WOBBLE FROM LEFT TO FRONT TO RIGHT TO REAR. MAIN SHAFT RECHECKED AND IS STRIGHT. AM I OVERLOOKING THE OBVIOUS??
DierWolf
06-09-2008, 04:14 PM
Spindle Shaft (Feathering Shaft) the 3mm shaft between the blade grips are bent.
JOSE MUNIZ
06-09-2008, 04:17 PM
SORRY, MY BAD.. INSTALLED FEATRHERIN SHAFT
DierWolf
06-09-2008, 04:21 PM
has the swashplate seperated? maybe some video of this whobble would help.
another_finn
06-09-2008, 04:28 PM
AM I OVERLOOKING THE OBVIOUS??
Just in case you are... Would this wobble be with the servo rods connected or not? I don't see how the swashplate could move like that unless it's just the inner ring... in which case it's about to separate and should not under any circumstances be flown with.
If the servo rods aren't on, the swashplate will indeed wobble the way you describe with nothing to keep it level ;)
JOSE MUNIZ
06-09-2008, 04:31 PM
SERVO RODS ARE CONNECTTED, HOWEVER NOTHING CONNECTED FROM SWASH UP..
another_finn
06-09-2008, 04:39 PM
OK, so can you describe this wobble a little more? Is it like a lateral swinging in the horizontal plane when you rotate the main shaft? Or does something look canted? Particularly, the inner race in relation to the "body" of the swashplate?
DierWolf
06-09-2008, 04:55 PM
Is the upper bearing in place? LOL nah that would be too easy.
helihathnofury
06-09-2008, 05:45 PM
How about some pics, might help the diagnosis??
Mike
tom dubya
06-09-2008, 09:39 PM
I had a swash wobble and went over everything. Couldn't find the problem, so i just bought a new swash and problem solved.
JOSE MUNIZ
06-10-2008, 05:19 PM
TO ANOTHER FINN...THANK YOU FOR HELP,WAS INNER RACE
TO TOM DUBYA....A NEW SWASH IT IS..
THANKS GUYS
another_finn
06-10-2008, 06:31 PM
Glad you got it sorted... but sorry for the loss of a swashplate. Save the balls and anti-rotation pin, you might find a use for them later.
testpilot58d
06-10-2008, 07:00 PM
he said 'save the balls'
another_finn
06-10-2008, 10:33 PM
I just knew you wouldn't be able to resist... And NO it's not the sequel to "Free Willy" :rolling
No sleep in the Sandbox either, huh? I think we're on the same UTC offset now.
JOSE MUNIZ
06-14-2008, 01:34 PM
swash wobble turned out to be one way bearing malfunction. one of the pin bearings would not release causing it to put just enough pressure on main shaft to cause it to be off center..
another_finn
06-15-2008, 08:29 AM
Huh? The main shaft rides on the bearings in the frame - I can see that faulty one-way bearing causing the main gear to wobble, but how does that translate to the swashplate? Unless it's more like a high-speed shake, of course.
JOSE MUNIZ
06-15-2008, 11:15 AM
good question, answer is I dont know however i re-installed old oneway and wobble came back then went back to new oneway and presto, wobble gone...its a mystery