H9 cap trim issue  
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All Forums >> RC Airplanes >> IMAC >> H9 cap trim issue
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H9 cap trim issue - 2/12/2003 1:48:02 AM   
snowflyer


 

Posts: 45
Joined: 2/5/2002
From: durham, NC,
Status: offline 		Hi,
I just flew my H9 cap w/ a saito 1.8. Flies GREAT! very impressed.
The only weird thing it does in when I slow down for a landing it flares. I would think this is a thrust line issue but during normal flight the trim doesnt seem to change. Is this a cap thing? with such a high thrust line or should I add in up thrust? The cg is spot on requiring slight up elev when inv. Thanks in advance.
       Post #: 1

H9 cap trim issue - 2/12/2003 8:32:11 AM   
wgeffon



Posts: 6376
Joined: 12/2/2001
From: Bloomington, IL, USA
Status: offline 		Sounds like its tail heavy...


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Wayne

(in reply to snowflyer)
       Post #: 2

H9 cap trim issue - 2/12/2003 8:48:03 AM   
jhess


 

Posts: 26
Joined: 5/19/2002
From: sarasota, FL, USA
Status: offline 		sounds like its tail heavy to me .I have the same plane engine combo . I had to add weight to the nose and took elevator travel down to the bare minimum. great flyer though!!!


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Blue Skies
JimHess

(in reply to snowflyer)
       Post #: 3

Thanks - 2/12/2003 5:36:53 PM   
snowflyer


 

Posts: 45
Joined: 2/5/2002
From: durham, NC,
Status: offline 		Thanks for the replies. I agree that it sounds like a tail heavy situation, but in flight, if anything, I would want to move the cg back. On my GP .40 size cap they had a couple degrees UP thrust on the motor. I may try changing motor incidence a bit to see what that does. Thanks again.

(in reply to snowflyer)
       Post #: 4

H9 cap trim issue - 2/18/2003 3:49:15 PM   
Red7fifty


 

Posts: 353
Joined: 1/20/2003
From: Palo Alto, CA, USA
Status: offline 		Just to eliminate this, have you checked the stab incidence to the wing? I put an ARF together that I had to fix by 2 degrees in the stab, the wing and engine were at zero. Just my 02.

(in reply to snowflyer)
       Post #: 5

Now that you mention it - 2/18/2003 8:42:50 PM   
snowflyer


 

Posts: 45
Joined: 2/5/2002
From: durham, NC,
Status: offline 		I guess with putting arfs together Ive gotten pretty lazy about checking trivial details like incidence Ill look at that tonight.
Now why didn't I think of that?

(in reply to snowflyer)
       Post #: 6

H9 cap trim issue - 2/20/2003 5:34:52 AM   
3D Joy



Posts: 1065
Joined: 12/21/2002
From: , QC, CANADA
Status: offline 		[QUOTE]Now why didn't I think of that? QUOTE]

Because you were having fun flying.

Flying... Someday snow will melt here and I will fly my new plane...

(in reply to snowflyer)
       Post #: 7

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