extreme 330 construction question
 

What else did they misprint ? The wings are not symmetrical (length wise). The hatches and trims are not equal distance from the centerline, but I can live with that

extreme 330 construction question
 

And thats why they have you start out with 3/8" throw on all surfaces so you can get the rest of it set up.
Ed M.

extreme 330 construction question
 

yes - small throws definitely makes it easier to control which is why i used the tecommended 3/8, but i maintain that very few people would have been able to land this plane no matter what the throws were.

i spoke to the company and they claim that they moved the origical CG recommendatiion from 4 1/4 - 4 3/4 to the current 5 1/4 - 5 3/4. i'd like a little feedback. i haven't worked out what a 5 1/4 Cg equates to in terms of a % of MAC but i think that is a very aggressive place to start. once people get the plane trimmed and a feel for it then maybe move it back to 5 1/4 or further - but to recommend you start there for a first flight???

help me out here guys (and gals), maybe i'm all wet. i'd like to know:

1) how many people currently fly with their CG 5 1/4 or more back and how many fly less than 5 1/4 back?

2) how many think the company has some culpability for recommending 5 1/4 as a starting point for a new plane?


I'm not one of these guys that's always blaming others for their mistakes - i'm just honestly curious as to who really is at fault here.

thanks for the input,

boneman

extreme 330 construction question
 

I wondered why there were two different versions of the manual out there. I read a post here on RCU that said the 330 gets squirrelly with the CG beyond 6". My manual had the 4.25 to 4.75 range ... so I started at 4.75. The plane did not hover well being this nose heavy.

I fly with the CG at 5" currently. The CG at 5" makes a night and day difference (i.e., improvement) in hover stability. No real penalty on overall stability or landing difficulty.

This plane just takes some getting used to. I'm going to move the CG back to 5.25 or so. It sounds like the 5.25 to 5.75 range is the real working CG range for this plane.

Moses

edit: typo

RE: extreme 330 construction question
 

I had my CG set at 5 1/2 and all it would do is stand on it tail . I called Goldberg to talk about it thay said would call back, that was 2 weeks ago. Good luck. I Email the man how worte the Review and he said that my Ailerons could be drooping.

RE: extreme 330 construction question
 

I have been flying my 330 with the cg between 5 1/2 and 5 3/4 without a problem as long as you maintain a little throttle input on landing. Started with their recommended low rates but increased from that point after first flight using 50% expo. High rates - max deflection.

RE: extreme 330 construction question
 

Do you think it may be the Aileron droop? It was about the thickes of the aileron.

RE: extreme 330 construction question
 

I lined my ailerons up as close to level as I could using a ruler from the center of the leading edge to the trailing edge with the aileron surface parallel to the ruler. The only time I notice the tail wanting to drop is if my 330 is realy slow on landing - just add a little throttle to slow the sink rate - make a 3 point landing.

RE: extreme 330 construction question
 

I centered the ailerons the best I could and moved the engine so the CG is at 4 1/2. I know you set yours 5 1/2 to 5 3/4. Do you think I should move mine back some? Where do you fly?

RE: extreme 330 construction question
 

Since you were at 5 1/2. you could try 5 or 4 3/4 just move a bit at a time to find where you like it. I balanced my 330 canopy side up. I fly in Grapevine and Lake Dallas.

RE: extreme 330 construction question
 

I balanced my 330 canopy side down. I fly at Thunderbirds.

RE: extreme 330 construction question
 

I did have a little droop in the ailerons. I also had a little up thrust in the engine. The engine mount is off . If you align the engine with the mount you will have up thrust in the engine.