Did you use right thrust on your 35% sukhoi  
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All Forums >> RC Airplanes >> Giant Scale Aircraft - 3D & Aerobatic >> WildHare R/C Support >> Did you use right thrust on your 35% sukhoi Page: [1]

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Did you use right thrust on your 35% sukhoi - 10/1/2008 3:35:35 AM   
husafreak


 

Posts: 82
Joined: 12/24/2004
From: , CA, USA
Status: offline 		I am ready to mount a ZDZ 80 on my 102" Sukhoi, should I build in right thrust, I think it will need it so what did you guys that have them flying do?
       Post #: 1

RE: Did you use right thrust on your 35% sukhoi - 10/1/2008 6:10:32 AM   
Barry Cazier


 

Posts: 3418
Joined: 10/2/2003
From: Idaho Falls, ID, USA
Status: offline 		I added about 2 washers worth on mine. I'm flying with a DA100. Seems about right but if I let it build up a bit of speed in a vertical climb it stills pulls to the left. But it's manageable. It hovers nicely and does everything I ask of it. But you'll need some RH thrust in it.
thanks
Barry

(in reply to husafreak)
       Post #: 2

RE: Did you use right thrust on your 35% sukhoi - 10/1/2008 6:22:22 AM   
Eagleburger


 

Posts: 45
Joined: 7/18/2008
From: qld, AUSTRALIA
Status: online 		I have 2-2 1/2deg in all mine. I would put in 2 and go from there. I had a 60size pattern ship years ago that was zero deg on everything, I ended up putting right thrust after one day. you can never have the perfect amount of right thrust for all situations, but 2 1/2 seems to be the closest.

(in reply to Barry Cazier)
       Post #: 3

RE: Did you use right thrust on your 35% sukhoi - 10/1/2008 6:31:23 AM   
Tired Old Man


 

Posts: 12339
Joined: 2/25/2002
From: Central, CA, USA
Status: offline 		What kind of flying is your primary interest? Fun flying and 3D? Then no right thrust. IMAC you're thing? Then about 1/2 degree or so of down and right may be what you want. Those that fly the upper levels of IMAC may prefer the zero-zero installation.

_____________________________

If you can''t fix it with a hammer, you have an electrical problem.

(in reply to Eagleburger)
       Post #: 4

RE: Did you use right thrust on your 35% sukhoi - 10/1/2008 7:09:08 PM   
sailing1


 

Posts: 292
Joined: 8/17/2004
From: tulsa, OK, USA
Status: offline 		Mine ended up about a degree of right thrust and 1/2 degree of down thrust, but I only put that in after I flew it a few times. It flew just fine without any thrust adjustment but was a little better for IMAC type flying after adding the washers. I'm not a real big fan of putting something extra into the design unless I have tried it first. I figure designer should get it pretty close to start with.

(in reply to Tired Old Man)
       Post #: 5

RE: Did you use right thrust on your 35% sukhoi - 10/1/2008 11:17:59 PM   
flatspinjim


 

Posts: 173
Joined: 6/23/2005
From: ft lupton, CO, USA
Status: offline 		Mixing a little right rudder to throttle is a great way to go also. More throttle, more rudder

_____________________________

Why did kamikaze pilots wear helmets??

(in reply to sailing1)
       Post #: 6

RE: Did you use right thrust on your 35% sukhoi - 10/2/2008 7:00:59 AM   
Tired Old Man


 

Posts: 12339
Joined: 2/25/2002
From: Central, CA, USA
Status: offline 		flatspinjim,

Your method is a lot easier to reverse mix out, especially if the reverse of one input is less in the second direction. As an example only, mixing 2% right or left rudder for a power on upline while using a zero degree rudder mix on a power off downline. Using an offfset engine thrust line will always have an effect on a power off downline due to residual thrust developed with a windmilling prop.

_____________________________

If you can''t fix it with a hammer, you have an electrical problem.

(in reply to flatspinjim)
       Post #: 7

RE: Did you use right thrust on your 35% sukhoi - 10/7/2008 1:37:08 PM   
colled


 

Posts: 39
Joined: 9/19/2003
From: Woking, UNITED KINGDOM
Status: offline 		I agree, no offset added to mine just mixed it out so straight in up as well as down lines.

(in reply to Tired Old Man)
       Post #: 8

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