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AllanNg · 11-21-2015, 07:56 AM

Just wondering what hole you using on the dfc swash? Inner or outer?

RC/DC_5000 · 11-21-2015, 11:06 AM

I use the outer holes. Align has their recommendations in the manual as well.

The outer holes make the pitch control very linear. The pitch rate remains constant. It also just seems like a good idea as the DFC arms are straight up and down and have the weight of the blades coming down square, if you will. If the disc were a table.. would you want the legs positioned at an angle to hold it up? I wouldn't.

I've never actually tried the inner holes- but I will speculate that they make the cyclic quicker as you go. I think it wise to use the FBL system to control that stuff.

AllanNg · 11-21-2015, 11:09 AM

Thanks. I'm leaning toward the outer hole, too, but I think the manual shows the inner hole. I'm on the 700L.

RC/DC_5000 · 11-21-2015, 11:13 AM

That's interesting. Sounds like we are both learning something here. I know for sure my 600L says the outer holes.

Perhaps Align wants the inner holes to move that big disc a little quicker mechanically. To gain a mechanical advantage for the bigger disc.

Either way, I'd go with Align... I full heartedly believe they know what they are doing. I've had my doubts more than a few times... but I always end up realizing they had it right to begin with.

AllanNg · 11-21-2015, 11:16 AM

I'm sure you get quicker cyclic with the outer holes, but inner gives more resolution.

RC/DC_5000 · 11-21-2015, 11:19 AM

Yea I guess you can just guess and check and see what you like and what it does. It'd be so easy to change it.. and not a high risk.

Post up and see what you think. I've been curious myself.

rcflyerheli · 11-21-2015, 10:59 PM

I think in addition to the resolution thought, the reason for the inner hole use would be to cut down on the throw and keep the FBL control loop in the sweet spot.

I really haven't seen design setups with too little throw, it's usually been the opposite, with too much mechanical movement, and that forces a cutdown in the control loop parameters.

fastblackbird1 · 12-10-2015, 09:40 PM

I use the inner hole and it fly good, also the manual say use the inner hole, I wondering too what will be the difference

AllanNg · 12-10-2015, 10:01 PM

Well, seems like I should try the inner hole first which I did. My first 700L is agile and awesome to fly. I'm sure the outer hole will make it more quicker on cyclic and perhaps a little more connected, but for now I'm very happy with the inner hole. Gona tune it a little more and get to know it a little more before I release the beast in it

ticedoff8 · 12-11-2015, 10:56 AM

The inner hole / outer hole on the DFC swashplate crown mainly relates to cyclic.
It does make the collective blade pitch a little more linear throughout the collective range.

Whether you use inner or outer is also dependent on which hole is used on the swash servo arms

I use the middle hole on the swash servo's arms and I have to use the outer holes on the swash crown and 135% servo travel to get 10° of cyclic pitch.

If I change to the outer most hole on the swash servo's arm, I have to use the inner hole on the swash crown

You can dial all of the differences out using the FBL gyro's swash servo travel adjustments and cyclic mix

11-21-2015, 07:56 AM	#1 (permalink)
AllanNg Registered Users Join Date: Nov 2012	DFC Swashplate holes Just wondering what hole you using on the dfc swash? Inner or outer?

11-21-2015, 10:59 PM	#7 (permalink)
rcflyerheli Registered Users Join Date: Apr 2010	I think in addition to the resolution thought, the reason for the inner hole use would be to cut down on the throw and keep the FBL control loop in the sweet spot. I really haven't seen design setups with too little throw, it's usually been the opposite, with too much mechanical movement, and that forces a cutdown in the control loop parameters. __________________ Specter 700, Logo 700, Logo 690SX, Goblin 700, Trex 700DFC, Gaui X7, Trex600EFL Pro, Trex 600 ESP, Trex 500 ESP, DJI 550 Amain Hobbies Team Rep

12-10-2015, 09:40 PM	#8 (permalink)
fastblackbird1 Registered Users Join Date: Nov 2012	I use the inner hole and it fly good, also the manual say use the inner hole, I wondering too what will be the difference Attached Thumbnails __________________ BLADE MQX, 250 DFC, Goblin 380, Goblin 500,600 ESP DFC, 700E DFC HV, LAKOTA UH-72 600 SIZE., AR7200BX, ROBIRD,DX8, DX6i, PHOENIX SIM.PROTOS MAX V2

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11-21-2015, 11:06 AM	#2 (permalink)
RC/DC_5000 Registered Users Join Date: Jan 2015	I use the outer holes. Align has their recommendations in the manual as well. The outer holes make the pitch control very linear. The pitch rate remains constant. It also just seems like a good idea as the DFC arms are straight up and down and have the weight of the blades coming down square, if you will. If the disc were a table.. would you want the legs positioned at an angle to hold it up? I wouldn't. I've never actually tried the inner holes- but I will speculate that they make the cyclic quicker as you go. I think it wise to use the FBL system to control that stuff.

11-21-2015, 11:09 AM	#3 (permalink)
AllanNg Registered Users Thread Starter Join Date: Nov 2012	Thanks. I'm leaning toward the outer hole, too, but I think the manual shows the inner hole. I'm on the 700L.

11-21-2015, 11:13 AM	#4 (permalink)
RC/DC_5000 Registered Users Join Date: Jan 2015	That's interesting. Sounds like we are both learning something here. I know for sure my 600L says the outer holes. Perhaps Align wants the inner holes to move that big disc a little quicker mechanically. To gain a mechanical advantage for the bigger disc. Either way, I'd go with Align... I full heartedly believe they know what they are doing. I've had my doubts more than a few times... but I always end up realizing they had it right to begin with.

11-21-2015, 11:16 AM	#5 (permalink)
AllanNg Registered Users Thread Starter Join Date: Nov 2012	I'm sure you get quicker cyclic with the outer holes, but inner gives more resolution.

11-21-2015, 11:19 AM	#6 (permalink)
RC/DC_5000 Registered Users Join Date: Jan 2015	Yea I guess you can just guess and check and see what you like and what it does. It'd be so easy to change it.. and not a high risk. Post up and see what you think. I've been curious myself.

12-10-2015, 10:01 PM	#9 (permalink)
AllanNg Registered Users Thread Starter Join Date: Nov 2012	Well, seems like I should try the inner hole first which I did. My first 700L is agile and awesome to fly. I'm sure the outer hole will make it more quicker on cyclic and perhaps a little more connected, but for now I'm very happy with the inner hole. Gona tune it a little more and get to know it a little more before I release the beast in it

12-11-2015, 10:56 AM	#10 (permalink)
ticedoff8 Registered Users Join Date: Jan 2010	The inner hole / outer hole on the DFC swashplate crown mainly relates to cyclic. It does make the collective blade pitch a little more linear throughout the collective range. Whether you use inner or outer is also dependent on which hole is used on the swash servo arms I use the middle hole on the swash servo's arms and I have to use the outer holes on the swash crown and 135% servo travel to get 10° of cyclic pitch. If I change to the outer most hole on the swash servo's arm, I have to use the inner hole on the swash crown You can dial all of the differences out using the FBL gyro's swash servo travel adjustments and cyclic mix

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