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HelicopterRadio - Servo - Gyro - Gov - Batt › How often Range Check ??
09-14-2007 04:16 PM  10 years agoPost 1
GyroFreak

rrProfessor

Orlando Florida ...28N 81W

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How often do you really do a range check ? And has it ever shown a problem and probably saved your chopper ?

I think about the hereafter. I go somewhere to get something, then wonder what I'm here after ?

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09-14-2007 05:05 PM  10 years agoPost 2
Slipknoter

rrApprentice

London UK

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I range check before the first flight of the day.

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09-14-2007 06:50 PM  10 years agoPost 3
LJS

rrKey Veteran

Minnesota, USA

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I range check before I put a new model in the air or after a crash repair.

The only range related problems I've heard of are when I would forget to put my antenna up (before I got my Spektrum) and when my friend's crystal popped out of his receiver. Personally I think the time is better spent checking the mechanics of the helicopter and the electrical connections. Those are failure points that quite often can cause crashes.

But that's just my opinion. Everyone's got to do what they feel comfortable with. For me, if I don't check every nut and bolt and electrical connection every eight flights, I just don't feel comfortable. But if a range check gives you confidence, more power to you.

Keep 'em flying.
LJS

Logo 600 VBar, 10S
TRex 600E VBar, 8S
Logo 500 VBar, 6S
TRex 600ESP, 6S

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09-14-2007 07:11 PM  10 years agoPost 4
nivlek

rrProfessor

Norfolk England

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I also range check before the first flight of each day . When I was our clubs safety officer , I made it a rule that all models must be range checked before their first flight of the day .
I've seen it save a few models .

At the end of the day , it gets dark .

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09-14-2007 07:23 PM  10 years agoPost 5
Rafael23cc

rrKey Veteran

Junction City, KS

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I believe that a range check before the first flight of the day is a little of an overkill. I do range check a few times during the season, plus: after a crash, after changing ANY components, and if I travel to another field where I've never flown before.

Rafael

Keep your feet on the ground, but your eyes on the sky.
Team Heliproz.com

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09-15-2007 01:12 AM  10 years agoPost 6
playfair

rrKey Veteran

Rochester, NY

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Every flight you take is a range check!

Aside from post-repair checkout, many of the things that cause problems on a previously ok heli would need all the vibration of a flight to show up.
When I do a check, I run the head up to about 1/4 stick and walk a spiral around it. Failsafe will send it back to idle if there's a prob.


The sky is our canvas

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09-15-2007 06:21 PM  10 years agoPost 7
MattJen

rrElite Veteran

UK

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deleted

All The Best

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09-15-2007 11:54 PM  10 years agoPost 8
nivlek

rrProfessor

Norfolk England

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If something is worth saying , it's worth saying twice , so :
So anyone who does not do a range check on his first flight of the day is in my opinion guilty of gross negeligence.

At the end of the day , it gets dark .

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09-17-2007 04:53 PM  10 years agoPost 9
Rafael23cc

rrKey Veteran

Junction City, KS

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MattJen

You don't need to be worried, a pre-flight is done everyday. A range check is not absolutely necessary as part of an every day pre-flight. More power to you if you do range check every day.

I read your story, and there is one key element to your story....
the problem was pointing to the crystals on both machines,as yesterday i had to fly on another channel,
On my list of times when to do a range check, I listed changing ANY components. You changed a MAJOR component of your radio system from one day to the other.

So a range check was in order.

And yes, flying without a range check after changing a MAJOR component of your RF link...
is in my opinion guilty of gross negeligence
We agree there.

Rafael

Keep your feet on the ground, but your eyes on the sky.
Team Heliproz.com

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09-17-2007 10:45 PM  10 years agoPost 10
sharam

rrElite Veteran

Northern California - Fly at Morgan Hill Field

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Range check, first flight of the day. Multi-point inspection:

1. Simple link tug and pull and visual check, usually during cleanup
2. Thorough check, once every few months

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09-21-2007 04:49 AM  10 years agoPost 11
oldboldpilot

rrKey Veteran

Southern California

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GyroFreak,

Given a new system, I do a very thorough range check. If this is well-known 50 Mhz/72 Mhz band equipment, that one was enough.

A new system (such as my 2.4 Ghz module) - very, very thorough range check, and then another range check in the worst position from the first day the next time out.

After three of these, all successes, I figure it is OK, and I will do no more range checks.

No, I have never lost a heli due to drop-out, or even auto-ed due to drop-out. I have had a momentary head speed reduction on an electric, every flight.. Which is why I eventually 50 flights later, no solution, bought a module/Rx 2.4 Ghz package.

I put an Extreme (2.4 Ghz module + Rx) in my JR 9303 last week, and did 4 thousand hours of range checks before my first flight. Flew three times, and all went perfectly, including no recurrence of the glitch I saw at least once every flight on my previous 50 Mhz system. This was on an electric 50 sized heli with a 2.2 HP 10s2p LiPo..

So, thanks, Extreme, and back to flying..

Helis are Man's Defiance of the Laws of Nature - OCHC

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09-21-2007 05:51 PM  10 years agoPost 12
Cope

rrVeteran

South Lake Tahoe CA

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Is there a "standard " procedure for doing a range check? I like the idea of collapsing most of the antenna. I dont want to walk to far away from my model. ALso It would be hard to see control surfaces moving ant any real range.
Sorry to bring back an old post, but I have been wondering about this for a while.
Thanks again
Cope44

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09-21-2007 06:03 PM  10 years agoPost 13
Slipknoter

rrApprentice

London UK

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I usually collapse the aerial, and walk parallel to the machine, up to about 50 metres. While doing this I check all the controls, but mainly the pitch as its easier to see.

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09-21-2007 06:36 PM  10 years agoPost 14
MattJen

rrElite Veteran

UK

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deleted

All The Best

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09-21-2007 07:05 PM  10 years agoPost 15
Cope

rrVeteran

South Lake Tahoe CA

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Ideally you are spupposed to have someone with you, who remains at the hellie side monotiring your inputs, he/she would then give you the thumbsup sign if all is well.

HMMM yes, but my friends are not interested unless its flying or about to crash.
I will try collapsing the antenna.

OK I know this is one of the worst/most frequent questions, but I'm gonna ask any way

How far will that thing go?

What is a realistic range std. 72 mhg tx and rx?

JR xp 6102

Thanks
Cope44

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09-21-2007 08:42 PM  10 years agoPost 16
MattJen

rrElite Veteran

UK

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deleted

All The Best

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09-21-2007 08:51 PM  10 years agoPost 17
Rafael23cc

rrKey Veteran

Junction City, KS

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How far will that thing go?
A few years ago, 3D Flyer magazine set out to answer that question. They took some radios, set them in a field and programmed the radio position on a GPS. The gps and the receiver and servos went on a "ride". They noted when the servos went jittery, but still had control, and also noted full fade of the signal.

The range of the major manufacturers varied from just over 2 miles to about 3 miles. I sincerely think that you will loose sight of the model before you loose control of it.

Rafael

Keep your feet on the ground, but your eyes on the sky.
Team Heliproz.com

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