Why are pitch curves in %?

[McKrackin]

Originally Posted by youturnjason

I meant to quote the OP sorry

Gotcha

Just used to having to go back and quote myself to show that I'm saying the same thing as the person calling me wrong

[sertav]

Originally Posted by RCheliski

Hi folks!

I have always wondered why, when many people are discussing pitch curves, they refer to them as a percentage, rather than the the actual degree. It just doesnt seem right to me. If my max pitch is -12 and +12, and yours is -10 and +10, or if the mechanical setup is different, and we are discussing possible new pitch curves, our percentages across the entire 5 point curve are going to be different. Am I missing something really simple here?

Ed

Pitch SETTINGS (not "curves") are always measured in degrees...when using a pitch gauge... You adjust your mechanical setup after setting 0-25-50-75-100 for the proper pitch "curve", in my opinion, for an aerobatic heli. Then you adjust your mechanical setup for 0 DEGREES pitch at half stick and "whatever" max +/- pitch DEGREES you want, as measured by a pitch gauge (easier for larger helis), with the throttle/collective stick at full up/down.

[fenderstrat]

"Wrong. if you want less pitch, Use ENDPOINTS!. Just changing the low and high value on pitch curve and leaving 25%-75% the same will result in a non linear piutch curve becoming a lot less sensitive above 75% and below 25% You have now lost your consistency in Pitch feel"


if you want more or less pitch(on a CCPM heli),its adjusted in the SWASH menu, NEVER endpoints.In CCPM endpoints are used to eliminate interaction.

as said the pitch curve stays at 0-25-50-75-100 and you use SWASH mix to dial in your max pitch.

if you use endpoints to limit collective you are going to add major interaction to your ELE and AEIL

[sertav]

Originally Posted by fenderstrat

if you want more or less pitch(on a CCPM heli),its adjusted in the SWASH menu, NEVER endpoints.In CCPM endpoints are used to eliminate interaction.

It depends on the TX. I adjust "pitch travel" in the TRAVEL ADJUST menu...not the SWASH menu...

[youturnjason]

Originally Posted by sertav

It depends on the TX. I adjust "pitch travel" in the TRAVEL ADJUST menu...not the SWASH menu...

That would just adjust the travel of one servo though?

[mattmezz]

hold the phone this is getting interesting! lemme grab a beer. oh, and popcorn!

[sertav]

Originally Posted by youturnjason

That would just adjust the travel of one servo though?

Nope, not in CCPM, at least in my case (DX7). All three servos on the cyclic are linked to moved up and down the same exact amount to provide collective control. Adjusting the top and bottom ends of "pitch" in the TRAVEL ADJUST menu affects all three cyclic servos equally.

[Pinecone]

You don't use Endpoints to limit the pitch range with CCPM. You use PITCH SWASH MIX.

Endpoints effect a single servo. Swash Mix effects a function (pitch, aileron, elevator).

And by having the Pitch Curve in %, I can change the Pitch Range using SWASH MIX, and my pitch curves do not change, everything just automatically works properly.

[im2tall]

EPA/Travel adjust is only used for swash leveling at your high and low points ! Swash mix is used to set your maximum collective!! Travel adjust/EPA sets individual servos to useable limits!!

[sertav]

Originally Posted by im2tall

EPA/Travel adjust is only used for swash leveling at your high and low points ! Swash mix is used to set your maximum collective!! Travel adjust/EPA sets individual servos to useable limits!!

Not with the mCP X and 130 X.

[youturnjason]

Originally Posted by sertav

Not with the mCP X and 130 X.

They have flybarless units which both require no TX swash mixing. Most flybarless units are this way. We are talking about flybarred CCPM helis

[sertav]

Originally Posted by youturnjason

They have flybarless units which both require no TX swash mixing. Most flybarless units are this way. We are talking about flybarred CCPM helis

Really? Because the OP doesn't mention flybars and the very NEXT post mentions FBL controllers.

[RCheliski]

Originally Posted by mattmezz

instead of trying to explain this to someone that isn't going to understand it anyway.

Youre kidding me, right? It has nothing to do with me not understanding the difference. I know that 100% of 12 is 12, 50% of 12 is 6. I even know that 25% of 12 is 62 (kidding).

My question was more for discussion rather than informing me. I still think that when a newbie looks for pitch curves or settings, they are looking for actual degrees, they just dont know how to ask the question. But I could be wrong.....

[Beaver Rat]

Originally Posted by RCheliski

Youre kidding me, right? It has nothing to do with me not understanding the difference. I know that 100% of 12 is 12, 50% of 12 is 6. I even know that 25% of 12 is 62 (kidding).

My question was more for discussion rather than informing me. I still think that when a newbie looks for pitch curves or settings, they are looking for actual degrees, they just dont know how to ask the question. But I could be wrong.....

Maybe they are looking for degrees... But how in the heck is the transmitter gonna know what degrees on the head a certain percentage on the pitch curve corresponds to? Every rotor head is different, not to mention they have to be setup properly as well. If 60% pitch in one heli is 5 degrees of pitch, it could easily be 2,3,4,6,7,8 depending on the different rotor head geometry of a different helicopter, and also if the user set it up properly or not mechanically.

[im2tall]

Originally Posted by sertav

Not with the mCP X and 130 X.

I've never owned a BNF super micro so I wouldn't know!!

[fourbie]

Originally Posted by mattmezz

hold the phone this is getting interesting! lemme grab a beer. oh, and popcorn!

And some aspirin for me.

Youre kidding me, right? It has nothing to do with me not understanding the difference. I know that 100% of 12 is 12, 50% of 12 is 6. I even know that 25% of 12 is 62 (kidding).

My question was more for discussion rather than informing me. I still think that when a newbie looks for pitch curves or settings, they are looking for actual degrees, they just dont know how to ask the question.

Interestingly you'd think modern computer radios could be "told" the pitch range in degrees set on the bird in and from there give a choice of units for the user, either degrees or percent.

[sertav]

Originally Posted by im2tall

I've never owned a BNF super micro so I wouldn't know!!

Dude, MANY other FBL controllers run the same way.

[im2tall]

My max pitch is setup through my FBL controller via usb I only use travel adjust for swash leveling high and low! Im also on 90deg -1servo !!