Good evening all,

I feel a valuable article for the customer/magazine would be to break down the set up of a CCPM Heli. I understand that there have been articles in the past for this but I have not seen what I will be discussing.

When learning how to set up a heli, you are told, set the pit percentage to 60% AIL, ELE, and PIT. No one provides a solid answer as to why do we set these percentages to 60%.

I now know it is to ensure that all three servos move at the same time/percentage to make the swash plate level at any collective stick setting.

Along with that, I resently learned that by adjusting the PIT percentage will affect the amount of verticle movement your swash plate will move and affecting your blade pitch as well.

I asked alot of questions to many people to finally formulate what I have written above.

Again, I feel your customers will greatly benefit from this information that may seem trivial but is quite complex for the porper set up of a heli.

Thank you for your consideration of using the above for an article.

Michael

Insanity: doing the same thing over and over again and expecting different results. Albert Einstein

Thanks Mike that is great info witch leads in to my question I fly a 450 and just got a new DX-7 (switching from the stock radio). What should my Pitch curve and throttle curve be and the rest of the setting's it doesn’t really expand on it. What is the best setting for a beginner? I’m still working on forward flight and hovering nose in. is there a standard setup?

"Life, Liberty and the Pursuit of All Who Threaten It"

Big_Ron,

If you were comfortable with how it flew with the old radio that would be a place to start. Before switching measure the pitch curves, low, mid, and high and after switching receivers adjust to the same settings. Same for throttle if you have a tach to find out what the RPM of the blades is.

If not then run the motor throttle curve at about 0 (low)to 80%( mid to high flat line) and see how it responds. Normal pitch curves are good from about -3 to +8. Idle up straight line throttle curve at 80% or so and pitch -9/10 to +9/10. Again this is a starting point.

Nobody realizes that some people expend tremendous energy merely to be normal. - Albert Camus

Check out this article... http://www.rchelimag.com/pages/howt...howto=11&page=4

Any man can be a father. It takes someone special to be a dad. ~ Anonymous

mSR, Trex 250, Mini Titan E325, Spektrum DX7, Phoenix Sim

Here is one Dennis made. It's in word so you can save it on your computer.

T-Rex 450S and the DX7 w/AR6100 settings (New Version added



http://rcheliforum.com/viewtopic.ph...7e5ba7aab7382bd

I have another but I don't know where it is. If I find it I'll post it up.

"BARNSTORMERS" Vermont Modelers Club Secretary

vermonster,mkoutnik & kcgraves

Thanks for the help and quick reply. I found the set up on the main page under how to about 30 min after I posted. The radio I used was a 72 MHz with knobs so I don’t know what the setting on it were I am going to use the advice you all gave me and the set up guide I will let you know how it goes and again thanks for the help.

"Life, Liberty and the Pursuit of All Who Threaten It"

How about an article on tuning gassers and why there are no small displacement (.50cc)gas (unleaded) engines.

I give up: What is "locking up your tail"?

The Nov issue talked about "Collective Management" - everything was pretty clear up until the author said "...and, if too much collective input is applied, you might even lock up your tail".
Oookaaayy.

I've got a pretty good imagination, and I can think of about 4 things this could mean - and I bet I'm wrong on all of them.
Stripping the gears?
Breaking the belt?
Exceeding some aerodynamic limitation?
Bogging the rotor so much the tail looses effeteness?

Okay Mr. Updike - help me out here.

ticedoff8 (Yahoo IM)
Shogun V2 - daily flier (retiring soon)
3 - GMP "King Cobra" .61 w/ 620mm blades - 25 yo heli.
AMA 171886

Hi Ticedoff

When applying collective one of the best indicators for whether you are over doing it is by feeling your tail. The best example I can think of is when you are flying backwards inverted and going into a turn and you apply too much collective your tail will then blow out causing your helicopter to whip around risking a crash. So pretty much you nailed it with your last suggestion. Being hard on your collective can cause your tail to really act funny, I have witnessed pilots who made quick inputs causing their motor to bog and lost their tail in the process. One of which actually flew over my head, which isn't a safe scenario at all. There has to be a combination of inputs though, because merely jamming your collective sticks wont cause your tail to blow out. If you jam your collective simultaneously with an input that puts a load on your tail then you'll most likely lose your tail. It is also often seen during transitional maneuvers because it is much easier to bind your rotorhead. Sorry I probably should have explained that a little better in the article as it is an important thing to remember when doing maneuvers that can load up your tail. Just remember to be easy on the collective and really feel your helicopter through every maneuver. I hope this helps

Brandon

I am setting up my throttle hold curve and ptich hold curve for the first time, would some one please advise me on what settings I should have?

I have a Raptor 50 Titan, DX7 transmitter and an OS Hyper 50 SX.

Also, when I am moving my swash plate to the extreme corners, to check for binding, I notice my swash hits the frame before the servos are maxed out (binding), how do I correct this issue with a swash that uses individual servos opposed to a ccpm heli?

Thanks again foryour assistance.

Micahel

Insanity: doing the same thing over and over again and expecting different results. Albert Einstein