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Thunder Power RC . Mikado Modellhubschrauber . GrandRC

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Safety - RC Helis are not toys > 6 Stitiches in Hand
 
 
zoom boy
Key Veteran
Location: N.E. Lincolnshire UK

I have once in a while tent pegged a model into the ground to get an engine set up that was being unreliable (with head loaders) not once was there any resonance issues, I too have seen what they can do to real helicopters (former aero engineering student) being on the grass acts like a natural damper, far better than these test stands, they are just begging for resonance, I would say only restrain a model if you really really really have to, eg unexplained glitch that only shows when flying, or a tempremental engine that just wont run unless you have the absolute right settings (old irvine engine)

Its not the best thing, you cant use it to set up curves or anything, but you can use it to set the needles up while the engine is under load, and its still on the ground (kind of hard to reach the needle when the models 50' up and climbing ) I like to be able to be as accurate as I can with setting the engine up, so doing so on the ground enables me to judge it better than if its flying (because of not having to concentrate on the flying aswell)

Having the blades on is a bad idea, if any lead or lag occurs, then that will lead to resonance, and that will lead to a sudden airframe failure, kabooom

I would say, only do it if you are either experienced, or live five hundred miles from the nearest experienced person, and have no choice.
03-22-2005 Over year old.
 
 
pistole
Veteran
Location: Heli Land ....

does anyone have a pic of the dork with the helmet under the ladder?

Rap70. TT70.Rap50. TT50.RD8000.
07-31-2005 Over year old.
 
 
wolfdad
Key Veteran
Location: Southern Maryland

You know, for whatever the reason, like fecal material, this post keeps rising to the top and, I ususally go "the other way," however I figure there must be a reason, so here comes the sermonette.

Ray Hostettler, in my opinion, started this crap, although I think some geniuses managed to discover it all by themselves. Tying, staking or otherwise retraining a heli to the ground or to some type of fixture is just plain dumb...I don't care what the friggin' reason is. Yes, in my early days, I will even admit to having done it myself, however I got bit (luckily, not badly) and have never nor will ever do it again. Tuning your engine while the aircraft is "safely" tied down is very attractive to some folks, especially new folks, however the key here is "just say no."

And, I have absolutely no problem with head-loaders...just not on a restrained aircraft. If you cannot fly well enough to tune your engine inflight, then you need to spend some more time on the SIM prior to venturing out to the field.

wolfdad sends....

"There are those who have...and, those who will" IRCHA #2117, AMA #70068, Turbine Waiver #105
08-31-2005 Over year old.
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Al Magaloff
rrMaster
Location: 12,199 Posts- Enough Time Wasted. See Ya!

Quote 
you need to spend some more time on the SIM
Agreed, Wolfdad! Or get some help from someone who can fly well enough. Ray's manual is great under the leg of the picnic table, to keep it from rocking.
08-31-2005 Over year old.
 
 
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CanoMod . Futaba-RC . A Main Hobbies

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Safety - RC Helis are not toys > 6 Stitiches in Hand
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