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Next-D › New Rave 3D Owner (Small problem)
04-04-2009 06:37 PM  9 years agoPost 1
maj

rrVeteran

united Kingdom

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Hi Guys,

Just bought a Rave 3D and what a machine. I have a question not about the rave but as follows.

Mini G installed,

Right Stop very crisp (no bounce),
Left stop Slides past and then bounces twice back.
Different AFR to get same piro speed (105L/100R)

I don't have a G-view. Do I need one and suggestions please.

Tail is free, no slop, boom mounted servo and Radix tails (prob not needed).

I can see this machine is going to be addictive.

Thanks in advance,

MJ

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04-04-2009 06:59 PM  9 years agoPost 2
Buzzin Brian

rrProfessor

College Station, Texas

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What is the gain set at? What model are you using?

Build it, fly it, crash it. Repeat as often as needed.

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04-04-2009 07:20 PM  9 years agoPost 3
maj

rrVeteran

united Kingdom

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Gain on my Futaba 12FG Gyro menu is around 38% AVCS selected.

I have set it up so in Rate mode it is in trim at hover pitch and mode should be the first one as recommended for all models.

MJ

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04-04-2009 09:33 PM  9 years agoPost 4
Buzzin Brian

rrProfessor

College Station, Texas

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I would run the gain higher than that. Have you ran the gain up until the tail started to hunt and then back it down a little? You will want to run the gain as high as you can. What type of tail servo are you using?

Brian

Build it, fly it, crash it. Repeat as often as needed.

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04-04-2009 10:59 PM  9 years agoPost 5
maj

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united Kingdom

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I run the 3500g, its brand new so not worn out. If I run the gain higher it will wag on climb out and not be satisfactory. I moved the ball in a hole from the recommended position to see if I could up the gain this way and it only made a few % difference.

The other thing is the left piro is way slower than the right with 100% both ways, I can correct in my transmitter but I have never had so much difference in a gyro piro before.

As I say right stops are superb, but left once stick released the tails continues past position then bounce back to where it should have been.

I imagine that the G view will have options to correct this just I was hoping it would work with stock settings.

MJ

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04-05-2009 12:09 AM  9 years agoPost 6
Buzzin Brian

rrProfessor

College Station, Texas

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It should work just fine without the G-View. This suggests something is most certainly off from how it is setup. The servo horn should be at 12.5mm from center for the ball, reducing this length will not help as this length is the one we have used on the Rave from day one. When setting neutral did you have a little bit of right rudder? And when setting the limits I assume you ran them all the way to their ends? If the tail is not ballanced there is for sure something wrong in the setup here. What head speeds are you running?

Also do not use the "gyro" programing of the transmitter. Just use the travel adjust for your aux channel and use the flashing lights on the gyro to set the gain and settings.

Build it, fly it, crash it. Repeat as often as needed.

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04-05-2009 08:43 AM  9 years agoPost 7
maj

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united Kingdom

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OK here is what I have done,

Removed and remounted,
Moved back to 12.5mm,
Set gyro mode to norm in TX giving rate select values,
Reset gyro software and limits,
Set Model A,
Hovered and set hover neutral no rudder input,
Activated HH and can run high values in tx not sure what gain is in gyro, can you check this without G-View?
Locked solid however after a left stop still slides past and skips back, Right stop perfect!!

The mechanical an TX setup is fine. I imagine I need to tweak with a G-view now so will borrow one and see. Overall I am happy and it can be flown but if you are looking at doing a left piro slide for example it looks a bit sloppy on the stop as it travels beyond and steps back from desired position.

MJ

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04-05-2009 06:30 PM  9 years agoPost 8
Sky Dancer

rrVeteran

Bryan, Texas

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It still sounds to me like your gain is set too low. I'm running a travel adjust of "79" on my 10X and that converts to about 68 gain on the G-view.

Try running your gain up further just to see how your left piros respond.

Don C

Keep up your rotor speed !

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04-06-2009 12:37 PM  9 years agoPost 9
Roger Hamilton

rrApprentice

Surrey, England

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Hi MJ, give us a call at Climb Out and either Ade or I will go through it with you in more detail - it shouold be stopping cleanly both ways. You can reach us on 0208 668 8335, or sales@climb-out.com

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04-06-2009 04:33 PM  9 years agoPost 10
Buzzin Brian

rrProfessor

College Station, Texas

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Another thing to check and verify is that the limits are set correctly. When you get to step 5 make sure you are holding full right rudder and pushing the button to set the right limit correctly. Repeat this step for the left limit. This is only to make 100% sure them limit parameters are set to the correct side. If these are backwards the gyro will still fly ok, but the stops will be off like you are seeing.

Brian

Build it, fly it, crash it. Repeat as often as needed.

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04-06-2009 05:07 PM  9 years agoPost 11
Sky Dancer

rrVeteran

Bryan, Texas

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Brian's right.... When you set TR direction and Right Limit hold full right TR (on your transmitter) and then just "TAP" the button. Now adjust the right limit by moving the TR stick (on your transmitter) to full right or full left until there's no binding on full right TR. DO NOT "HOLD" the button down during this step or you will change menus to Left Limit and your Right limit will not be set!!! Ask me how I know, Duh....

Don C

Keep up your rotor speed !

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04-06-2009 05:18 PM  9 years agoPost 12
Tyler

rrElite Veteran

Chicagoland area

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Although my symptoms were different than yours, I found my brand new JR 3500G to be defective right out of the box. I had two flights on it for intial set up before the servo started acting weird. It was also intermittent, as the servo would work fine than go bonkers again. I replaced the servo. Just a thought.

I am waiting for the April snow to melt for another test session, but so far the new servo looks perfect on the bench.

Tyler

Enjoy things that money can buy IF you don't lose the things money can't buy.

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04-06-2009 05:53 PM  9 years agoPost 13
maj

rrVeteran

united Kingdom

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Hi Guys,

Thanks for your input on this one.

1) I don't suspect the servo seems to be fine and its a constant issue.
2) The mechanical and electrical setup I believe is clean so its not that. (On the point of holding full left and pressing once then setting the limit, I can't seem to do that. Right held press then right limit, hold and then it goes straight to left limit adjust)
3) I found that on model select B the left stop to be cleaner.

I then purchased a G-view, compared A to B and interpolated some figure to try. I now have through the advanced settings avery near perfect setup, its balanced for rotational rates now and the left stop is almost (not quite) as good as the right.

Not sure why no on else is experiencing it but I am quite critical about setup and notice small deviations.

Happy to keep looking in to it but it seems to be working pretty well now.

MJ

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04-06-2009 07:54 PM  9 years agoPost 14
Sky Dancer

rrVeteran

Bryan, Texas

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(On the point of holding full left and pressing once then setting the limit, I can't seem to do that. Right held press then right limit, hold and then it goes straight to left limit adjust)
You don't hold left and press once to set any limits!

To be clear, you only set TR "direction" and Right limit as stated in step 5a. Then you to hold the button down to move on to setting left limit as stated in step 6.

Don C

Keep up your rotor speed !

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04-07-2009 02:57 PM  9 years agoPost 15
cstoneman

rrApprentice

Colorado

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DO NOT "HOLD" the button down during this step or you will change menus to Left Limit and your Right limit will not be set!!! Ask me how I know, Duh....

Don C
Do I ever know about that. I was adjusting the limits after adjusting the tail pushrod, and screwed up with the button. Took it in the backyard, and found that I had inadvertently reversed the tail direction. At lift off, a very fast piro.

The sad part, is that I even checked the tail servo direction, by turning the bird, but my brain still didn't notice it was reversed.

Almost broke the new Rave before she was even setup.

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