Downthrust on Extra 300 38%  
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All Forums >> RC Airplanes >> Giant Scale Aircraft - 3D & Aerobatic >> WildHare R/C Support >> Downthrust on Extra 300 38%
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Downthrust on Extra 300 38% - 1/31/2008 7:42:08 PM   
danielwidman79


 

Posts: 104
Joined: 11/4/2003
From: Härnösand, SWEDEN
Status: online 		Hello
Im just going to tighten the bolt to the DA on the 28% Extra 300.
Should i put washers between engine and firewall to get more downthrust?
       Post #: 1

RE: Downthrust on Extra 300 38% - 1/31/2008 9:15:57 PM   
rctom



Posts: 5191
Joined: 5/8/2002
From: Flower Mound (near Dallas), TX, USA
Status: offline 		Why would you think this is a good idea?

TF

(in reply to danielwidman79)
       Post #: 2

RE: Downthrust on Extra 300 38% - 1/31/2008 10:37:52 PM   
krayzc-RCU



Posts: 5961
Joined: 3/26/2002
From: Kannapolis, NC, USA
Status: offline 		sounds like u have not flown this bird yet.. If so fly it and then come back to correct issues to fit your needs ie, CG then thrust issues right and up is what find a brid needs from time to time....

_____________________________

smooth as silk!

(in reply to rctom)
       Post #: 3

RE: Downthrust on Extra 300 38% - 1/31/2008 10:57:30 PM   
Tired Old Man


 

Posts: 11505
Joined: 2/25/2002
From: Central, CA, USA
Status: offline 		You cannot know what type of thrust angles will be needed until the plane is flown. As Krayzc noted above, you have several things to do before you finalize any thrust angles. Balance and trims work together to make number one. Once the balance is out of the way and the plane flys at near neutral trims at medium throttle settings you can start determining what thrust angles, if any, will be needed. Does the plane nose up when you cut the throttle? Then you need less down thrust, and vice versa. After the engine vertical thrust line is done you can go to work on right thrust. One thing at a time.

_____________________________

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

(in reply to krayzc-RCU)
       Post #: 4

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