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Old Jul 31, 2013, 09:41 AM
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United States, OH, Columbus
Joined Jun 2006
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Parkzone BF109 rolled uncontrollably and burned in

I recently purchased a used Parkzone BF 109 on here and i went to fly it for the first time the other day. I hand launched it without at 3/4 throttle like I do all my other PZ warbirds and it begain to roll Uncontrollably to a height of about 50 to 75 feet kept rotating out of control and went in nose first about 75 yards away. It felt like I had no control. The CG was right. The control direction was right, The prop was on correctly. The battery has 5 cycles and was fully charged. It rolled so fast it was as if the ailerons were full deflection. The ailerons were full deflection post crash but I dont know if I put that in to stop the roll or if they malfuctioned that way. The only thing i didnt do was range check the receiver but it is a brand new AR 400 I bought from the LHS. It has the stock PZ motor. The Old 30 amp ESC was destroyed in the crash. I hooked everything back up to a EFlite 40 amp pro ESC and everything seems to work fine. My question is. Was this torque roll that built up. Or was it malfunctioning equipment? The only Parkzone plane I ever crashed was the Icon a5 when I put the prop on backwards. I ordered a new kit and I don't want this to happen again. Thanks in advance. Pat
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Old Jul 31, 2013, 10:54 AM
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Mikemynameis's Avatar
San Pedro,Ca
Joined Sep 2004
7,938 Posts
Did you buy it used or maybe the wing was warped or had a twist in it. Something you should check
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Old Jul 31, 2013, 11:29 AM
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United States, OH, Columbus
Joined Jun 2006
39 Posts
Bf 109 burn in

I did buy it used. How would I tell? The ailerons look ok. I jus t range checked the receiver and I quit at 65 paces.
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Old Jul 31, 2013, 11:43 AM
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Mikemynameis's Avatar
San Pedro,Ca
Joined Sep 2004
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Quote:
Originally Posted by skypig#232 View Post
I did buy it used. How would I tell? The ailerons look ok. I jus t range checked the receiver and I quit at 65 paces.
Look at the wing at the tips and see if there flat . Check both wings. If one tip is higer or lower then the other then thats your problem. Or maybe your using little or to much ailerons or not enough expo . You might what to post this in the Parkzone 109 thread and see what other people say

http://www.rcgroups.com/forums/showt...parkzon+bf+109
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Old Jul 31, 2013, 12:07 PM
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Joined Aug 2003
549 Posts
whith ailerons at nuetral /matched wing and aileron te at in board end . check what
you have at the outer end ,dont expect te to macth tip there which is normal.
but the difference should be the same at both tips.
esc/bec part may have failed and caused that
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Last edited by mdugas; Jul 31, 2013 at 12:14 PM.
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Old Jul 31, 2013, 12:29 PM
Field of Dreams Flyer
Mikemynameis's Avatar
San Pedro,Ca
Joined Sep 2004
7,938 Posts
Ya listen to him not me I know nothing
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Old Jul 31, 2013, 12:31 PM
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United States, OH, Columbus
Joined Jun 2006
39 Posts
Thanks guys ill post it in the 109 thread as well
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