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dwbbrown(at)gmail.com
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 Posted: Mon May 17, 2010 7:51 am Post subject: Trim Tab |
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| Quote: | | I also have the small trim tab. I called Zenith they said it needed to bigger. So I over lapped the existing Tab with a new piece of aluminum that gave me twice the previous surface area. Since I never needed any down trim, I reposition the length of the arm from the servo so that neutral for the servo is slightly up trim, this gives about 10 or 15 degrees of extra up trim at full throw. The trim tab itself is at neutral in normal cruise flight hence no extra drag. |
David
N601EX
CH601XLT JAB3300
165 hrs 25 since upgrade
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daveaustin2(at)primus.ca
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| Posted: Mon May 17, 2010 8:38 am Post subject: Trim Tab |
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When you added the extra to the trim tab, did you check that you could overcome full trim in both directions with the stick at all speeds?
Dave austin
[quote][b]
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bryanmmartin
Joined: 10 Jan 2006
Posts: 1018
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| Posted: Tue May 18, 2010 12:40 am Post subject: Trim Tab |
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Yes I did. In fact, I removed some of the extra metal because I felt it was too hard to hold the nose down with zero flaps and full trim. I angled the metal down over the trailing edge of the trim tab to reduce its effect on nose down trim. It's actually angled enough that it adds little if any nose down trim.
On May 17, 2010, at 12:34 PM, Dave Austin wrote:
| Quote: | When you added the extra to the trim tab, did you check that you could overcome full trim in both directions with the stick at all speeds?
Dave austin
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--
Bryan Martin
N61BM, CH 601 XL,
RAM Subaru, Stratus redrive.
do not archive.
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_________________
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Bryan Martin
N61BM, CH 601 XL, Stratus Subaru.
do not archive. |
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dwbbrown(at)gmail.com
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| Posted: Tue May 18, 2010 7:12 am Post subject: Trim tab |
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| Quote: |
Time: 09:38:07 AM PST US
From: "Dave Austin" <daveaustin2(at)primus.ca (daveaustin2(at)primus.ca)>
Subject: Re: Trim Tab
When you added the extra to the trim tab, did you check that you could
overcome full trim in both directions with the stick at all speeds?
Dave austin
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No, not at all speeds, a micro-switch did stick once at full throw, I had no trouble with control at normal cruise speeds.
My additional area is not greater than the area on the full length trim tab that Zenith now supplies and has tested.
David
N601EX
CH601XLT JAB3300
165 hrs 25 since upgrade
[quote][b]
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