RunRyder - Stylus eCCPM set-up/Predator

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Radio - Servo - Gyro - Gov - Batt > Stylus eCCPM set-up/Predator

Tday
Key Veteran
Location: Needham, MA

I’ve searched and haven’t seen a Stylus/eCCPM set-up thread, though there are a bunch of threads on various cool stylus features. If I've missed the thread, please just send me there. I’ve not set-up an eCCPM before and the Stylus is new to me too. Is this the process? I'm doing this on a Predator

First, I’m using metal arms, so I can’t just drill holes that start everything at dead center. Do I start by using the stylus servo centering to get mid stick set perfectly?

Then, do I adjust swash links and EPA’s (same h/l)so that full pos and negative pitch are perfectly set-up.

Is the next step to set servo limits to keep things from binding at full pitch/cyclic. Not sure how that’s done.

Finally, manage servo delay’s if I need to fix up any out of level condition during pitch travel.

Now, what if I want to reduct the total pitch---go back to the epa's? (I use 0-100% pitch curves in all flight modes, per Todd Bennett Jason Krause clinic.)

And how about managing the aileron versus elevator pitches at full throw.

Hope this isn't just too basic and thanks in advance.

Tom

2 + 2 = 5 for extremely large values of 2.

01-05-2006 Over year old.

HOMEPAGE

JKos
Elite Veteran
Location: City of California in the state of Maryland

Tom,
> Do I start by using the stylus servo centering to get mid stick set
> perfectly?

Sounds good. Check both orientations of the arm first and even different arms to see if they are each a bit different.

> Then, do I adjust swash links and EPA’s (same h/l)so that full pos
> and negative pitch are perfectly set-up.

OK, here's your first Stylus eCCPM lesson.

There are two sets of EPAs when you put the Stylus in eCCPM mode. The EPAs simply labeled "EPA" in the menu are exactly like "Swash AFR" on Futaba and JR. Channels 2 and 3 are elevator and aileron and Channel 6 is collective. Note that there are two values for each, one for each direction of each control.

> Is the next step to set servo limits

No need to really mess with those except on throttle if you want to use throttle curves plus mixes. Works great for not overdriving the throttle servo.

The menu labeled "CP-EPA" is now the per-servo endpoint adjustment like ATV on Futaba and EPA on JR for swash plate leveling at min and max pitch.

"CP-LNR" is adjusted to keep the same amount of cylic input at min and max collective as at zero collective.

"CP3-DELAY" is adjusted to keep the swashplate from dancing during fast elevator inputs. Mine is at 15%.

Hope that helps.

- John

Protos -- Logo 10

01-05-2006 Over year old.

Tday
Key Veteran
Location: Needham, MA

That's a big help. I can now see what the cp-epa's are for and how that's different than EPA. Whew, that just wasn't clicking. That CP-lnr sounds like a really useful thing and I'll just put the 15% in to cp3 delay for the heck of it to get started. I may even have to use the sdelay since one of the servos, though new, seems to be a little slower. OK...thanks very much.

Tom

2 + 2 = 5 for extremely large values of 2.

01-05-2006 Over year old.

HOMEPAGE

Tday
Key Veteran
Location: Needham, MA

OK, now I've got things set-up with all linkages squared up at mid-stick, the swash plate travels perfectly level from the mechanical minimum to the mechanical maximum, and it hits the same pitch value on the plus and minus side...+/-15 degrees.

I'd like to now max out pitch at =/- 11 degrees. I keep my pitch curves at a linear 0 to 100% on all switches. Nothing jumps around that way. On a mechanical mix, all I need to do is adjust the pitch epa's and get the pitch I want. Simple and all switches are identical pitch at all times.

I don't see anything that looks like that in the stylus manual. I thought that would be the CP-EPA screen...which sounds like the mixed end points, but when I put a value, say 60 in the pitch lower and upper values, things just get out of level. The descriptive blurb for this screen talks about this as a swash leveling screen as did Jkos' post above, so I guess I don't know the right next step.

Jkos or anyone else...how do you do that with the stylus/eccpm set-up?

Thanks,
Tom

2 + 2 = 5 for extremely large values of 2.

01-09-2006 Over year old.

HOMEPAGE

TMoore
rrProfessor
Location: Cookeville, TN

Try the EPA channel for Pitch and see if this doesn't fix your problem. Alternatively you may use Servo Limit to adjust the overall endpoints for the pitch motion.

TM

01-09-2006 Over year old.

JKos
Elite Veteran
Location: City of California in the state of Maryland

Yep, like Terry said, adjust the values for channel 6 in the "EPA" menu. There are two values, one for "up" and one for "down" so remember to adjust both to get your +/- 11 degs.

You also use the "EPA" screen to adjust direct cyclic input by changing the values for channels 2 and 3.

Quote
Alternatively you may use Servo Limit to adjust the overall endpoints for the pitch motion.

Terry,
Does this not cause any goofiness with cyclic inputs? I haven't tried this approach yet.

- John

Protos -- Logo 10

01-09-2006 Over year old.

TMoore
rrProfessor
Location: Cookeville, TN

John,

I'll have to try it and get back to you.

I'll check it out on my TRex.

TM

01-09-2006 Over year old.

Tday
Key Veteran
Location: Needham, MA

Thanks for the reply and Ok, I'll look at that one and see. On the Futaba 9c, what you would do is change pitch on the swash afr and the "eccpm mixed" pitch "end point" changes. The EPA on the Stylus seems to work on one servo at a time, (no surprise really), but it isn't "eCCPM mixed". And the CP-EPA doesn't seem to do the swash afr equivalent either, it's doing some leveling function. Anyway, that's what it looked like last night, so I'll take a fresh look today.

I can get the pitch I need with the pitch curve...change the bottom and top of each mode equivalently. Kind of clumsy, but it will work fine.

Not sure how to do the aileron and elevator. If I change the aileron and elevator epa's won't that impact the leveling of the swash as it goes from full down to full up? (I just finished making sure everything ran perfectly flat from bottom to top using the epa's and a little centering but won't this change everything?)

Sorry to be this confused, but perhaps a fresh look today will clear it all up.

Tom

2 + 2 = 5 for extremely large values of 2.

01-09-2006 Over year old.

HOMEPAGE

JKos
Elite Veteran
Location: City of California in the state of Maryland

Tom,
The numbers for channels 2, 3, and 6 in the "EPA" screen are JUST LIKE Swash AFR numbers on Futaba. The Channel 2 numbers are the Aileron Swash AFR, Channel 3 numbers are the Elevator Swash AFR, and Channel 6 numbers are the Pitch Swash AFR.

The "CP-EPA" screen are your ATVs in Futaba speak. "Aileron" is your Channel 2 servo, "Elevator" is your Channel 3 servo, and "Pitch" is your Channel 6 servo.

- John

Protos -- Logo 10

01-09-2006 Over year old.

z11355
rrMaster
Location: 10000 is enough time wasted.

Ah, I see Airtronics products need a magic decoder ring!

01-09-2006 Over year old.

HOMEPAGE

Tday
Key Veteran
Location: Needham, MA

Hey John...thanks, I'll take another look today. I guess I got it backwards but I did get the swash to move perfectly level from top to bottom. Anyway, I'll undo or redo tonight as required and see how it goes.

And yes on the decoder ring (it's hobby wide for me anyway)...I love this forum. It would be virtually impossible to get anywhere without the expert help found here and at the field (yes, that would include you, Z, so thanks there too.)
Tom

2 + 2 = 5 for extremely large values of 2.

01-09-2006 Over year old.

HOMEPAGE

TMoore
rrProfessor
Location: Cookeville, TN

Z,

You buy a pair of PF Flyers and the ring comes standard.

TM

01-09-2006 Over year old.

z11355
rrMaster
Location: 10000 is enough time wasted.

God, you must be old if you remember PF Flyers.

it's got the 'Magic Wedge' !!!!!!

what is the model # of the Airtron. servo you like for the Trex?

01-09-2006 Over year old.

HOMEPAGE

JKos
Elite Veteran
Location: City of California in the state of Maryland

> I see Airtronics products need a magic decoder ring!

That's funny. Even I had to confer with Terry here on RR and Brian at Airtronics before I completely understood what was going on.

- John

Protos -- Logo 10

01-09-2006 Over year old.

TMoore
rrProfessor
Location: Cookeville, TN

Howard,

Yea baby the wedge is the shinizzle. I had forgetten that.

The SX that I use in the Rex is the 94091.

Terry

01-09-2006 Over year old.

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Radio - Servo - Gyro - Gov - Batt > Stylus eCCPM set-up/Predator

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