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06-19-2011, 03:45 PM
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Join Date: Jan 2006
Posts: 905
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John, I confess I am still using the Warp prop bubble. I have not yet fabbed the Tony T. digital brkt, but I do have the same digital level and will get to it as soon as I have a minute. I'm retired so am busier than I was when I worked 60 hrs a week to earn a living.
I did fly the 12 again this am and went up top of the scattered cover to 4500 (6600 density) and the engine ran perfectly. Take off again started at 5150 and progressed to 5300. At level off went right up to 5700 and I throttled back to 5500. In level flight in smooth air that produced a steady 115 knots. The only thing I noticed was a shift in tone (very lite, but audible) when I throttled back from 5500 to 4200 to descend to pattern alt. Perhaps the prop was pushing the engine at that point? What do you think? I'm feeling pretty good about the engine, but will use a manometer on the carbs to check balance next week, and I will fab the digital blade system.
Dick Seiders
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06-19-2011, 04:20 PM
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Join Date: Apr 2008
Location: Davenport, IA
Posts: 1,390
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Building the John Bender fixture for use with a digital level will take an afternoon. The bubble level is useless!
I was 1 degree off with the bubble.
Last edited by MartySantic : 06-19-2011 at 09:18 PM.
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06-19-2011, 04:31 PM
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Join Date: Jan 2006
Posts: 905
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Ok Marty, I agree and as soon as I get an afternoon I'll do it
Dick Seiders
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06-19-2011, 06:23 PM
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Join Date: Jun 2008
Location: Byron Bay, NSW
Posts: 104
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Where do ya get it?
Several times in the last 6 months I have spent a few hours on the net to nail down where to get a digital level that will read 0.1 degrees in the full range. most are angle finders with an arm attached, or only read to 0.1 at 0 or 90. I even learned how to disable the locality function on the browser, but that did not bring in many more US suppliers. Very frustrating.
I would really like to get the name or website of a supplier with the right level. Foreign made is OK. I would greatly appreciate any advice
Rod
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06-19-2011, 07:04 PM
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Join Date: Feb 2010
Location: Perth, Western Australia
Posts: 1,647
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Digital level
Rod,
Sent you a PM
Quote:
Originally Posted by Ausflyer
Several times in the last 6 months I have spent a few hours on the net to nail down where to get a digital level that will read 0.1 degrees in the full range. most are angle finders with an arm attached, or only read to 0.1 at 0 or 90. I even learned how to disable the locality function on the browser, but that did not bring in many more US suppliers. Very frustrating.
I would really like to get the name or website of a supplier with the right level. Foreign made is OK. I would greatly appreciate any advice
Rod
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__________________
rgmwa
RV-12LR 912ULS
120346
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06-19-2011, 08:17 PM
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Join Date: Mar 2008
Location: Texas
Posts: 1,378
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Digital Level
The free App on my IPhone is as accurate as my $50 digital level...go figure.
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06-19-2011, 08:32 PM
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Join Date: Jan 2006
Posts: 905
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I don't think it matters what you buy. They all have a tolerance of +/- .2 degrees. This tolerance means you can be off +.2 on 1 blade and -.2 on the other for a diff. of .4 degrees in worst case. Unlikely that would happen tho so I am going with it. I'll be anxious to see the test diff. between the digital and my Warp prop bubble. I suspect it will be little, but I'm willing to learn.
Dick Seiders
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06-19-2011, 08:52 PM
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Join Date: Dec 2008
Location: Lacey, WA
Posts: 1,365
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An inexpensive level...
Here is a link to the level I use. http://www.amazon.com/iGaging-Digita...8537067&sr=8-1
Doesn't cost much, has a laser beam feature, and a tripod screw attachment so you can firmly attach it to your fixture. It only costs about $34 from the online supplier.
There are a jillion ways to make a fixture so you can check your prop angles. I made a simple one like this:

Attached it to the level with a 1/4X20 screw, put it against the back of the prop and line it up on a paint stripe using the sighting notch.
The fixture touches the prop at 3 places for consistent placement. Read the angle, takes a couple seconds.
There have been better, more elaborate digital level fixtures posted on the forum and easy to find with a search.
Tony
__________________
Tony
E-LSA RV-12 ULS
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06-19-2011, 08:56 PM
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Join Date: Apr 2008
Location: Davenport, IA
Posts: 1,390
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