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HomeAircraftHelicopterHIROBOHirobo Freya › CCPM cyclic pitch....
08-11-2010 05:43 PM  7 years agoPost 1
ncarbon

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Kalispell Montana

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I can't get enough cyclic pitch. Heres the story:

X-spec CCPM with RJX flybarless head. The Hirobo 120 Swash hits the main mast and gives me only about 10 degrees of cyclic. The TotalG calls for 14 for proper setup. Do I need a different head with a ratio like b/h? Or would a different swash allow for more cylic travel??

TIA Ned

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08-12-2010 01:36 AM  7 years agoPost 2
TMoore

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Cookeville, TN

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Move the balls on the blade pitch arms in toward.the mainshaft center and see what that does for you.

TM

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08-12-2010 01:46 AM  7 years agoPost 3
ncarbon

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Kalispell Montana

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OK
OK will try that, what do you think about using the 9mm EX-A pivot bolts to get more cyclic?

Ned

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08-12-2010 02:18 AM  7 years agoPost 4
Dr.Ben

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Richmond, VA, USA

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You can use longer balls, but the concern I had when I did so on my models was the contact the ball links leading edge had on the inside edge of the outer ears of the swashplate.

The best answer for you besides what Terry suggested is to retrofit the model with the swashplate from the Turbulence. It uses a larger radial bearing and allows for more swashplate tilt before main mast contact.

Ben Minor

Peak Aircraft/Team Minicopter Team Futaba Team Kontronik USA

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08-12-2010 02:21 AM  7 years agoPost 5
ncarbon

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Kalispell Montana

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Thanks
I twisted the links sideways, close but I think they will fly. That is great to know about the swash from the D3

Ned

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08-12-2010 02:56 AM  7 years agoPost 6
ncarbon

rrApprentice

Kalispell Montana

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Gulp
180 bones for the D3 swash.....we will see how the pivot bolts do first.

Ned

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08-12-2010 03:30 AM  7 years agoPost 7
TMoore

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Cookeville, TN

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Use the one from the SDX. It's cheaper.

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08-12-2010 05:20 AM  7 years agoPost 8
ncarbon

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Kalispell Montana

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How are the QUK ones
I see QUK makes some metal ones @ 75$, are they any good? and what is the diff between the freya 120 and the sceadu 120, are'nt they both 10mm?

Ned

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08-13-2010 04:01 AM  7 years agoPost 9
Dr.Ben

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Richmond, VA, USA

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They are effectively the same part. Neither uses the oversized radial bearing that the D3 and SDX swash use.

The current dollar to yen conversion is making Japanese heli parts more costly than usual.

Ben Minor

Peak Aircraft/Team Minicopter Team Futaba Team Kontronik USA

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08-13-2010 04:08 AM  7 years agoPost 10
ncarbon

rrApprentice

Kalispell Montana

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Thank You
The pivot balls seem ok, I will consider the D3 swash, the SDX one isn't bad but plastic.

Ned

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08-14-2010 03:50 PM  7 years agoPost 11
synodontis

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United Kingdom

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The best answer for you besides what Terry suggested is to retrofit the model with the swashplate from the Turbulence. It uses a larger radial bearing and allows for more swashplate tilt before main mast contact.
this would be a good idea Ben, but it's not. Let me explain (given the pressumption that the Turbulence swashplate is bigger):

1) the cranks on the Freya SWM are made for the original swashplate, if you put the Turbulence's swash in you cannot get a vertical links from crank to swash at neutral because you basically need bigger cranks (and bigger spacing between the two back cranks because of the large swash size)
2) the links would be "leaning out" due to the large swash size
3) this in turn has an effect of how the swash will now behave with the setting on the transmitter set to the original SWM arrangement
4) which most likely introduce more issues than it solves, unless someone know some way of "mixing" it out, and I don't think any transmitter was designed for this arrangement.

All this goes to show that replacing large swash on CCPM arrangement is not as simple as it seems. You can get away with it on mechanical mixing because it doesn't have this damn dependency bias!!!

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08-15-2010 01:16 AM  7 years agoPost 12
Dr.Ben

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Richmond, VA, USA

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The ball dimensions, both inner and outer ring of the new swash, are the same as the old one. It is for this reason that Hirobo was able to retrofit all of their top line kits such as the Freya OPIII SWM with the new swash without concern for any change in geometry. Gordie Meade has that very swash on his primary Nats contest model, a Freya OP SSZ-V SWM. It came in the kit.

Ben Minor

Peak Aircraft/Team Minicopter Team Futaba Team Kontronik USA

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08-15-2010 02:08 AM  7 years agoPost 13
Aaron29

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USA

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..

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08-15-2010 07:23 PM  7 years agoPost 14
synodontis

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United Kingdom

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The ball dimensions, both inner and outer ring of the new swash, are the same as the old one.
The Turbulence swash is HUGE. But I never saw the Freya SWM swash which was the reason for my assumption.

turning a normal freya to swm is a downgrade in my book.

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08-15-2010 07:28 PM  7 years agoPost 15
ncarbon

rrApprentice

Kalispell Montana

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Results
So I did use the EX-A pivot balls and achieve 14 degrees of cyclic. I flew the TotalG and have minor adjustments. It flew amazingly well. The cyclic agility is a bit much for me, so i will tone it down alittle. Very pleased with the setup. Thanks for all the input.

Ned

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