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  #31  
Old 03-05-2017, 04:07 PM
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Mike S Mike S is offline
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Quote:
Originally Posted by rv6ejguy View Post
The photos of your journey are great. Appreciate you posting them here. Nice clean layout on every facet. Might help others following in your footsteps.
Absolutely correct statement Ross.

Caleb------great work.
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Rv-10, N210LM.

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  #32  
Old 03-05-2017, 05:23 PM
Norcalrv7 Norcalrv7 is offline
 
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New weight and balance numbers are in. Looks like I needed to more accurately level the aircraft before looking at numbers. 447/433 with 294 on the nose.

Caleb
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  #33  
Old 03-05-2017, 06:57 PM
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Your write-up reminds me of one of those television reality shows where they rebuild a home. First you see the tradesmen starting to work then they take a commercial break. When they come back after commercial, the home is re-plumbed, the finish work is in except for a final piece of molding, and they are ready for the "Move-that-bus!" moment. I'm jealous. ;-)

~Marc
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  #34  
Old 03-06-2017, 09:32 AM
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Quote:
Originally Posted by Norcalrv7 View Post
New weight and balance numbers are in. Looks like I needed to more accurately level the aircraft before looking at numbers. 447/433 with 294 on the nose.Caleb
My spreadsheet says you're 1" forward of the rear limit at a reasonable "worst case" loading; minimum fuel (5 gal), a pair of 200 lb guys in the seats, and 50 lbs in the baggage area.

You could remove all three PC680's and install two EarthX ETX680's (-38 lbs at 56", moment -2128); the CG at the above worst case would still be 0.3" within limits (CG 86.5, limit 86.8). Check my numbers of course.

For sure you don't need a third battery. Take it out and save about 16 lbs with wiring, assuming you actually have confidence in the Bus Manager architecture. If you're not comfortable removing it, perhaps it's time to change your electrical system. I can't do fault analysis without knowing more about wiring details for the third battery, but I suspect it doesn't really help maintain a live engine.
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Last edited by DanH : 03-06-2017 at 05:04 PM.
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  #35  
Old 03-06-2017, 12:47 PM
Norcalrv7 Norcalrv7 is offline
 
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I like the automatic features of the bus manager, but also see it as a potential single point failure. The 3rd backup Batt is a very simple backup if all else fails. Maybe I'll put some time on the airplane and consider removing it, or going to the lithium batteries. I haven't looked at lithium batteries in depth until now, but the numbers (except for price) sure are awesome! I am also running 1 alternator at the moment. Maybe as the bank account allows, Ill go to dual alternators and dual lithium batteries.
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  #36  
Old 03-06-2017, 05:04 PM
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Quote:
Originally Posted by Norcalrv7 View Post
I like the automatic features of the bus manager, but also see it as a potential single point failure. The 3rd backup Batt is a very simple backup if all else fails. Maybe I'll put some time on the airplane and consider removing it, or going to the lithium batteries.
Do a wire by wire analysis of the Bus Master primary power architecture. Add the additional battery, switch, and feed wiring, and include it in the fault list. Then make a logical decision. See posts 58 and 63 here:

http://www.vansairforce.com/communit...d.php?t=146753
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  #37  
Old 03-11-2017, 09:25 PM
Norcalrv7 Norcalrv7 is offline
 
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Nearly a year after starting this Subaru-Lycoming conversion, my RV-7a took to the sunny skies over Eureka, CA. The engine ran silky smooth without any hiccups. CHT's stayed in the mid 300's, and I ran the engine at 25" and 2500 RPM at about 11:1 AFR for break in. After the flight I cut the filter open, and found nothing abnormal. Success! Now to fine tune all my fuel and timing values in SDS.

Using Ross's software on my laptop to see realtime engine data. Tuning my fuel tables here
0307171148 by Caleb Lesher, on Flickr


One More test run
0228171753a_HDR by Caleb Lesher, on Flickr

Ready to fly!
0328170752a_HDR by Caleb Lesher, on Flickr


0310171127a_HDR by Caleb Lesher, on Flickr

Success!
0310171125a by Caleb Lesher, on Flickr
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Last edited by Norcalrv7 : 08-28-2017 at 10:42 AM.
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  #38  
Old 03-12-2017, 09:15 AM
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Great job and nice pix. The smile says it all...
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Turbo Subaru EJ22, Marcotte M-300, IVO, RV6A C-GVZX flying from CYBW- 416.6 hrs. on the Hobbs,
RV10 95% built- Sold 2016
http://www.sdsefi.com/aircraft.html
http://sdsefi.com/cpi.htm


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  #39  
Old 03-12-2017, 10:11 AM
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Gotta like a guy who flies with a rubber ducky on his panel
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  #40  
Old 03-12-2017, 08:00 PM
Norcalrv7 Norcalrv7 is offline
 
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Quote:
Originally Posted by DanH View Post
Gotta like a guy who flies with a rubber ducky on his panel
He's my lucky duck :-)
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