The disadvantage of tightening them down excessively tight, is that the blades then won`t be able to find their center when they spool up. Which will most likely result in vibrations due to the head being unbalanced. I always tightened mine just enough to get just a little resistance when folding or unfolding them, and no problems so far.

 

I go for fairly tight, really tight if you are brave enough for a blade stop (apparently).
Simon

 

You actually can tighten blades to the point they crack. I run mine pretty tight. I can hold my Heli at the blade root and shake it without collapsing. As far as not finding center: There is a lot more centrifugal force exerted on blades than you think. Hundreds of kilos in a 700


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I do mine up thight I have had my old 700e boom strike with old head that was befor the Dfc stuff
so there is no way they can fold when doing auto bailouts or the wall or any
Thing that unloads the head

 

Yeah and you never do walls... If you haven't boom striked you 700 yet is a testament to doing then up tight

Citizen#024

 

Yeah I love the sound of the head over speeding the EsC love doing the wall a big 180amp spike blade fart hahahahaha

 

I wouldn't worry too much, someone will always tell you that you have your blades too loose, then 5 minutes later someone else will walk up too your helicopter and tell you have your blades too tight.