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HelicopterThunder TigerOther › swash binding on r50
10-21-2004 08:41 PM  13 years agoPost 21
hidero-h

rrApprentice

anaheim ca.

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yes i would like FULL eileron and elivator but what does this have to do with rottor blade pitch?

are we not talking about how mutch the swash tilts from front to back or left to right.?

all i wont to know is if for some reason while hovering "if i pull my right stick back all the way" am i going to cut my tail box off.?

or do i need to limit my swash throws .?

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10-21-2004 08:44 PM  13 years agoPost 22
Ringding

rrApprentice

Austria

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10-21-2004 09:52 PM  13 years agoPost 23
sweetP

rrApprentice

Sarasota,Florida

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Order your square swash plate here

Hey, I think were going about this the wrong way! We should have a square swash plate to match the square gimble. I'll contact a machine shop right now. I'm gonna be rich. I'll tell you where to send your cash for pre-production orders. Luke, use the cyclic limiter Luke it is your destiny.

What was my tag line? AMA 139721

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10-21-2004 10:27 PM  13 years agoPost 24
Spitfire_mk5

rrKey Veteran

Canada

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Put me down for one of those square swash things...

Do they help with 4 point piroflips?

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10-21-2004 11:24 PM  13 years agoPost 25
Al Magaloff

rrMaster

12,199 Posts- Enough​Time Wasted. See Ya!

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Hidero, when the swashplte tilts in any direction, what happens above the swashplate? I'm liking that square swash!

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10-21-2004 11:42 PM  13 years agoPost 26
Dan Lewis

rrNovice

Tampa, FL

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ring for Z?

Can someone please point me to a cyclic ring for a 9Z?

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10-22-2004 03:46 AM  13 years agoPost 27
Dusty

rrApprentice

Edmonton, Alberta -​Canada

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I dunno folks...

My swash plate used to bind when it was set up with +-5 on the elevator and +-7 on the ailerons. At that point, I was using a ring so it wouldn't bind on me.

Then, when I messed with the setup, got +-7 on both, it didn't bind at all in the corners at full. I run +-9 on pitch.
Any more than 17 degrees of pitch on the blades will make the dish stall. So if you're using 7 on cyclic and 9 on pitch that is still only 16.

As far as I was concerned, it was flying great with the new setup and I tossed the ring.

I don't have any binding and it flips and rolls like a dream... even with stock paddles.

Shawn

Canada Shawn

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10-26-2004 05:38 PM  13 years agoPost 28
w.pasman

rrElite Veteran

Netherlands

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Dusty,

The problem with the swash (the problem that is solved with the cyclic travel limiter) is not about blade stall, it's about binding the swash bearing against the shaft.
If you have full aileron AND full elevator, you will have MORE THAN full when you put the stick in the corner aka binding. Depending on your flying style, you may or may not use the corner very often but when you happen to use the corner very nasty things may happen to the swash plate and your heli.... [Note: binding may not occur immediately, but try rotating the head when you test this] When you do piroflips it's very easy to accidentally hit a corner if you would not have a cyclic travel limiter.

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10-26-2004 11:40 PM  13 years agoPost 29
eric_b

rrKey Veteran

Denver, CO, USA

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It's not so much of an issue that the swashplate or swashplate ball will bind up on the mainshaft, as it is a problem that the linkages cannot follow the path of the swash when it is at extreme angles of tilt due to mechanical constraints, and this causes binding in the linkage, which can break parts of the linkage.

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10-27-2004 03:19 AM  13 years agoPost 30
Dan Lewis

rrNovice

Tampa, FL

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Since I don't see these things for sale, I made a cyclic ring for my 9Z out of a circular servo arm with my dremmel. I'll try it this weekend.

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10-27-2004 10:32 AM  13 years agoPost 31
Al Magaloff

rrMaster

12,199 Posts- Enough​Time Wasted. See Ya!

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Dan, Rick's has them in stock. I agree with EricB. The binding links will cause trouble. A quick test you can do on the bench. Stir the cyclic stick to full deflection. If the rotor head moves or worse, turns, while stirring, better go back and look again at the set-up. If not, then hold the stick in each corner, and observe what happens when you turn the rotor head. Dusty, let us know how you fair this test.

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10-27-2004 12:47 PM  13 years agoPost 32
Reesy

rrKey Veteran

In the doghouse ...​Nottingham UK

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Hello chaps
I had a look at my Rap 50 last night .. cyclics are setup pretty much as per manual, I've put the hoops to the outer hole.
No binding moving the sticks to the corners (I fly mode1 so a cyclic ring isn't an option)
I put a pitch gauge on the paddles and measured Aileron and elevator I'm getting close on +- 20 degrees on all 4 directions.
I put the hoops to the inner holes and reduced ATV's to 80% but and still getting over 15%
This is at mid stick with blades running along boom for elevator and across for aileron (paddles at 90 deg)
Am I doing something horribly wrong here?

Many thanks

Paul

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10-27-2004 01:47 PM  13 years agoPost 33
sweetP

rrApprentice

Sarasota,Florida

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Reesy,
How does it fly. If it flips and rolls the way you want it to without binding then leave it alone. I would also check for cyclic binding at full -/+ pitch.

What was my tag line? AMA 139721

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10-28-2004 03:49 AM  13 years agoPost 34
Helipilot01

rrApprentice

ColliervilleTn

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Ron Lund at Ricks has cyclic rings for Futaba and JR transmitters now.

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10-28-2004 12:28 PM  13 years agoPost 35
gt900uk

rrKey Veteran

Scotland

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Just out of interest would a better swash plate help make this problem less? If i got say the quick uk swash would this reduce the binding?

This Heli Will Self Destruct In Five Seconds!!

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10-28-2004 02:00 PM  13 years agoPost 36
eric_b

rrKey Veteran

Denver, CO, USA

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would a better swash plate help make this problem less?
No. The problem stems from the fact that the swashplate is a circular device and the transmitter gimbal is a square device.

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10-28-2004 02:06 PM  13 years agoPost 37
gt900uk

rrKey Veteran

Scotland

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OK thanks eric i realise that is what causes the problem just thought that it wouldnt be so bad with a better bearing in the swashplate cheers

This Heli Will Self Destruct In Five Seconds!!

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10-28-2004 05:31 PM  13 years agoPost 38
Drunk Monk

rrProfessor

Preston, UK

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I believe you can get more cyclic pitch out of the TT swash plate, i.e.8 degrees compared to the 7 degrees with the Quick UK swash. I haven't used the TT one, just remember somebody mentioning it.


Stephen

I only open my mouth to change feet.....

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10-28-2004 05:44 PM  13 years agoPost 39
Al Magaloff

rrMaster

12,199 Posts- Enough​Time Wasted. See Ya!

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With the QUK swash, if you put the mast collar on top of the lower bearing, instead of on top of the upper bearing, all works out well.

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10-28-2004 06:03 PM  13 years agoPost 40
Drunk Monk

rrProfessor

Preston, UK

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if you put the mast collar on top of the lower bearing, instead of on top of the upper bearing, all works out well
Now that sounds like pure genius, I do believe you could be right. Thanks


Stephen

I only open my mouth to change feet.....

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HelicopterThunder TigerOther › swash binding on r50
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