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GrandRC . CanoMod . A Main Hobbies

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Radio - Servo - Gyro - Gov - Batt > PCM Range Testing
 
 
jfair
Senior Heliman
Location: Ft Lauderdale FL

Horizon has a fascinating article on PCM range testing, and some of the factors that affect our radios. Who knows may save one of your Heli’s someday.

http://www.horizonhobby.com/article...sting/index.asp

Jeff
07-26-2001 Over year old.
 
 
Ken B
Elite Veteran
Location: Phoenix, AZ

Just my way

I range test all recievers and the revolution antena. I find some degrdation after going to the new antena. I also check my machines out after a long day and vibs.

Ken B
07-31-2001 Over year old.
HOMEPAGE  
 
 
JEFF_SE
Heliman
Location: Pittsburgh PA

I do a range check at the beginning of every flying day. This is mainly to ensure that the "beginners" will learn to do this, but it doesnt hurt to spend a few extra moments doing the check.

In addition to doing a range check, I also do a quick control check prior to initial take off of each flight. I get the head up to speed, and then move all each of the controls to ensure that the desired result is observed. This too is to benifit beginners, but has on occasion saved me too. Amazing that you can forget to reconnect a link on the swashplate or tail rotor linkage (during bench setup) , and not notice it until your ready to do that tail stand push-out

Jeff Ewing
09-12-2001 Over year old.
HOMEPAGE  
 
 
alfred
Senior Heliman
Location: Australia, New South Wales, Mid North Coast

I admit that range checks are less the norm now as I have not had a failure for over 10 years.
I do a visual and physical check before every flight and usually hover it for a minute before landing it again,stopping the blades and do another check on servos, linkages, muffler mount, fuel connections and a general feel on all moving parts. This takes less then 15 seconds.
I "always" check for correct control corrections before any flight.
Overdoing it? I don't think so as I had the X-Cell for over 10 years and never crashed.
When I upgrade parts or do major changes I always put the training legs back on.
Last Saturday after the routine checks I lifted her carefully of the ground and then saw the fastes pirouettes I have ever witnessed a heli do.
Closed the throttle and walked away without a scratch on it.
For the very 1st time my Gyro was in reverse (CSM540) which was easely corrected and normal flight proceeded from their.
I believe it happend since after the programming I didn't turn it off and on, so when I went to the field I also fergot to give it 5 seconds without moving for the gyro to run through it's preflight checks.
It proved again that initial precausions will pay off.
09-12-2001 Over year old.
 
 
Doug
Elite Veteran
Location: Naples Florida....

Every day as part of the pre-flight ritual.
09-12-2001 Over year old.
 
 
DangerousDick
Veteran
Location: Cheshire, England

Every time I fly (always with PCM), the range is tested using height - the fail-safe is set to bring the engine to idle, cyclic to centre, and pitch to 0 deg.

If the heli goes into fail-safe before I loose sight of it then it just comes down to the point that I regain control!

Cheers
Richard.
09-19-2001 Over year old.
 
 
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Boca Bearings . Modefo's RC Helicopters . XHELI.COM

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Radio - Servo - Gyro - Gov - Batt > PCM Range Testing
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