setting the degree of engine thrust question
 

I have read an article on here about setting the degree of thrust to keep planes from doing certain bad things.

I cannot seem to find the post anymore, and I thought it was a sticky.

If anyone knows the article would ya post the link?

I have a Funtana X50 that snap rolls on a tight loop, thinking maybe about trying to change the thrust a bit.

Thanks

Brian

RE: setting the degree of engine thrust question
 

2 degrees of right thrust.

However that is not the casue of the snap.

It may be, too much deflection, too much surface area, too fast, too far back balance, your flying, overall weight it's a Funtana and/or several other factors.

Easiest fix, reduce your deflection of the elevator on low rate. Only use the high rate at zero airspeed.

RE: setting the degree of engine thrust question
 

I agree with YNOT. Sounds like your problem is not related to thrust, but probably something that is related to too much elevator throw. Or having the CG a tad to aft which is making your elevator really sensitive. The farther back the CG is the less throw you need on elevator. Thrust has a larger impact on the uplines. If when you pull to vertical and the plane tends to veer Left or Right thats when you put more or less thrust. Dont know of the thread you are talking about but, ive used this [link=http://www.nsrca.org/technical/trimming/TrimmingChart.pdf]CHART[/link] to help setup my plane. Also Giestware has some very good information on his website. which could be found on www.Giestware.com

RE: setting the degree of engine thrust question
 

http://www.rcuniverse.com/forum/m_45...tm.htm#4530826

Check out this thread ,it may help you out .
BTW My funtana did the same thing no mater what I did .I can honestly say that I don't miss that plane in the least .

RE: setting the degree of engine thrust question
 

Pull vertical. Plane comes back to the canopy. Add downthrust.

Pull vertical. Plane goes towards landing gear. Add upthrust.

Pull vertical. Plane goes left so bad you need a lot of rudder to correct it. Add right thrust.

Pull vertical. Plane goes straight up. You don't have enough power for 3D. ;)

In all actuality--you really don't want a plane to go straight up at full throttle. If it does that, it's going to pull right when your flying level. What you really want is a compromise between right thrust and having to use a bit of right rudder on a full power upline.

RE: setting the degree of engine thrust question
 

My funtana x50 bit the dust yesterday due to snapping out on full up, this was the reccomended rates on low. CG in the middle of reccomended.
This plane has a bad habit and it cost it it's life.

Flat spin took a bit longer to come out, about 75 to 100 feet, came out pointed at the ground. Applied up, snapped out, flattened the wings, applied up, snapped and then cart-wheeled on the ground.

Wish I could have figured this out before it died, I really liked the way this plane flew, all except the part of snap-rolling on full up .

Brian