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cjhukill(at)cox.net
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 Posted: Sun Dec 23, 2007 11:19 am Post subject: Gretz mount |
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I recently installed my Gretz mount and thought I would share an issue with the list. The reinforcement plate that is supplied with the mount , the one with the joggle that goes on top of the spar flange, has a joggle of .045 which is correct for the smaller RVs, but not the 10. The flange on the 10 is .065. I contacted Gretz and he said he was aware of the issue, and possibly the next batch run will be made with the larger joggle (which would be easy to shim for the other RVs). Meanwhile he suggested that I could put the plate in a vise and beat on it to fit. I tried that and ended up with something that I didn't think belonged on my airplane. So the fix was to make a new plate out of .065 material, and flush rivet a strip of material to the leading edge, that would go on top of the flange, and allow the plate to sit perfectly flat against the skin.
I installed the mount on the inboard side of the outboard rib of the second bay from the tip of the wing. This allows for access with the tip removed, and is far enough from the tip that there is clean air, and it's clear of the tie down ring. Contact me offline if you need pictures.
I installed the new Dynon heated pitot / AOA probe, which is fabricated from nickel and it looks like a real quality unit. I plan on at least one Dynon box, which will give me visual and aural AOA / stall warning. The probe also is temperature controlled for low current draw, and has fault annunciation on a Dynon box, or a stand alone LED if not using a Dynon box. My experience with the Dynon system I have in the RV8 couldn't be better. The system is rock solid, and loaded with features.
Chris Hukill
shaving bottom wing skins to fit
[quote][b]
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johngoodman
Joined: 18 Sep 2006
Posts: 530
Location: GA
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| Posted: Tue Dec 25, 2007 6:54 am Post subject: Re: Gretz mount |
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Chris, I'm going the same route, except I was foolish enough to put it where Van's probe went. The aileron push tube is a problem there but manageable. Fortunately, I was warned, so I'll pass it on. The Dynon tube's metal - where you screw it to the Gretz mount - is very soft and thin. Drilling is not too bad but tapping the holes for screws must be done very carefully.
John
[quote=" I installed the new Dynon heated pitot / AOA probe, which is fabricated from nickel and it looks like a real quality unit. I plan on at least one Dynon box, which will give me visual and aural AOA / stall warning. The probe also is temperature controlled for low current draw, and has fault annunciation on a Dynon box, or a stand alone LED if not using a Dynon box. My experience with the Dynon system I have in the RV8 couldn't be better. The system is rock solid, and loaded with features.
Chris Hukill
shaving bottom wing skins to fit
/quote]
| | - The Matronics RV10-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?RV10-List |
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