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Midland Helicopters . HeliProz . ZoomsHobbies

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Main Discussion > Servo Savers on a Heli???
 
 
MrNiceGuy
Senior Heliman
Location: Rockledge, FL

I was just reading a thread about stripped servos and started thinking about the Servo Savers we used when I did RC Cars/Trucks. http://www3.towerhobbies.com/cgi-bi...?&I=LXS447&P=ML
They have a strong little spring in them that will give a little to keep the servo from stripping when hit hard but not enough to effect normal operation. I'm wondering if these would work on heli swash servos to help them survive a hard crash. I wonder if they have enough tension in the spring to not flex during normal flight. My guess would be yes but I'm just guessing. Anyone ever try it. Might be a good idea and save some expensive servos. Just a thought
07-20-2008 01:28 PM
 
 
TachyonDriver
Veteran
Location: Chipping, Lancs, UK

I think it would be a huge 40 gallon drum of worms to open!

The manufacturers would need to accurately calculate/measure the forces acting on the servos throughout the helis flight envelope. 3D or just hovering around? How fast can the servos move and could the saver keep up with that movement and not be fooled into thinking it's had an external impact? After a crash, when a person's rebuilding the chopper:- "I've forgotten the setting on my elevator servo saver, anyone help?" Most servo savers tend to be adjustable...

Interesting theory MrNG, and I can see where you're coming from, but it may well be more trouble than its worth

Tach.

Little Spinning Bundle of Joy®
07-20-2008 02:19 PM
 
 
eric_b
Key Veteran
Location: Denver, CO, USA

The only reason to do this would be if the servos were breaking in-flight, which they don't. And, if you were using a servo saver and was doing it's job and it gave way due to excessive load, the heli would almost certainly crash because of that.

However, if you decide to try it, make sure you get it on tape
07-20-2008 03:31 PM
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Yug
rrProfessor
Location: Niatirb Taerg

A servo saver would seriously undermine the linkages leading to all sorts of nasties like flutter and very sloppy performance.

Vegetable rights and Peace
07-20-2008 04:09 PM
 
 
Helijost
Senior Heliman
Location: Pevely, MO - USA

Yug is correct, a servo saver would cause a ton of issues. If you get the correct servos for the cyclic, you would never need anything like a servo saver.

700N, EVO 50, Caliber 5, Beam 450, and comming soon TREX 9000 :)
07-20-2008 04:13 PM
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DSW
Senior Heliman
Location: Oviedo, Florida

SAFETY!, RC cars and truck's do not leave the ground and do not have carbon fiber blades spining at high rpm's.
07-20-2008 04:20 PM
 
 
AirWolfRC
Elite Veteran
Location: 42½ N, 83½ W

When a servo saver is sized properly, near the max torque rating of the servo, It would be fine . . . . and unnecessary in a heli with properly sized servos.

Torque savers are mainly for car steering when you hit something with the wheels being steered . . . . severely overloading the servos. That lets you keep driving after you take a tumble. In a heli, onec you take a "tumble" there are other "happenings" that will prevent you from continuing the flight making the servo saver a moot point.
07-20-2008 04:29 PM
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sid-fmx
Senior Heliman
Location: Las Vegas, NV

Ever hear of the famouse 3D Chung. Do a search here or you tube. Hes the master of inovation. He has been using them for a long time.
07-20-2008 05:22 PM
 
 
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Main Discussion > Servo Savers on a Heli???
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