Review - Heim Joint's "Tennis Racket Effect" mod for helis - Page 15

kdsguy1 · 03-02-2013, 12:48 PM

i am very interested in getting theses on both my 550e, and 450 pro v2!!!, please pm me or send me a link on both the 550e i have the new desighn tail v2 silver

FDflier · 04-09-2013, 05:06 PM

Are they available for Raptor 50 Titan?

Jeff

neverland · 04-11-2013, 08:29 AM

sorry to butt in, but i don't understand the logic of why making the grips heavier would make it easier for the slider to move under load. as the weight is the same each side, wouldn't any positive or negative effect be exactly counteracted? i've searched around the net but can't find any theory. and why is it called 'the tennis racquet effect'? its puzzled me for a while.

Helico-pteron · 04-11-2013, 10:07 AM

Quote:

Originally Posted by neverland

sorry to butt in, but i don't understand the logic of why making the grips heavier would make it easier for the slider to move under load. as the weight is the same each side, wouldn't any positive or negative effect be exactly counteracted? i've searched around the net but can't find any theory. and why is it called 'the tennis racquet effect'? its puzzled me for a while.

As you can see by the age of the thread that it never caught on. It's just something that doesn't exist in reality. It's like the magnetic bracelet for rc helicopters.

neverland · 04-11-2013, 10:52 AM

well i did the mod on my 450 anyway, but couldnt tell any difference tbh. saying that, its not any worse!

neverland · 04-11-2013, 02:33 PM

i had a 'lightbulb' moment. the weights are to counteract the control arm sticking out from the blade holder, which, due to centrifugal force, 'prefers' to be in line with the blade holder when the blades are spinning, so forcing the tail slider into the '0' degree position where it likes to stay. if the projecting 'chinese weights' are the same weight as the control arm, and at 90 degrees to it, the forces should be balanced out. ie the position of the blade axis wont be forced into any particular position. with the result that the tail slider should move along the shaft with little resistance. dead simple when you think about it

03-02-2013, 12:48 PM	#281
kdsguy1 Registered Users Join Date: Feb 2012 Location: nacodgoches, texas	i am very interested in getting theses on both my 550e, and 450 pro v2!!!, please pm me or send me a link on both the 550e i have the new desighn tail v2 silver __________________ control crash expert! blade 450x, edge blades, more coming. trex 550e v2, hc3sx, cc100, edge 553, cc bec pro To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts. trex 550e v2, 7200bx, cc100, cc bec pro, edge 523trex 450pro v2 7200bx, dx8 edge blades, hs5065 mg, kds 450sv,

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04-09-2013, 05:06 PM	#282
FDflier Registered Users Join Date: Dec 2010 Location: Lewiston, Idaho, USA	Are they available for Raptor 50 Titan? Jeff

04-11-2013, 08:29 AM	#283
neverland Registered Users Join Date: Jul 2010 Location: uk, warwickshire	sorry to butt in, but i don't understand the logic of why making the grips heavier would make it easier for the slider to move under load. as the weight is the same each side, wouldn't any positive or negative effect be exactly counteracted? i've searched around the net but can't find any theory. and why is it called 'the tennis racquet effect'? its puzzled me for a while.

04-11-2013, 10:52 AM	#285
neverland Registered Users Join Date: Jul 2010 Location: uk, warwickshire	well i did the mod on my 450 anyway, but couldnt tell any difference tbh. saying that, its not any worse!

04-11-2013, 02:33 PM	#286
neverland Registered Users Join Date: Jul 2010 Location: uk, warwickshire	i had a 'lightbulb' moment. the weights are to counteract the control arm sticking out from the blade holder, which, due to centrifugal force, 'prefers' to be in line with the blade holder when the blades are spinning, so forcing the tail slider into the '0' degree position where it likes to stay. if the projecting 'chinese weights' are the same weight as the control arm, and at 90 degrees to it, the forces should be balanced out. ie the position of the blade axis wont be forced into any particular position. with the result that the tail slider should move along the shaft with little resistance. dead simple when you think about it