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10-11-2013, 09:32 PM
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Join Date: Oct 2007
Location: Iowa City, IA
Posts: 45
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Engine or avionics?
What would you buy first, assuming you can not get both at same time.
IO-360 with FWF and work on it.
OR
Glass cockpit and all that is coming with it and work on it.
Any input is appreciated.
__________________
RV-7A Standard kit
Empenage - Finished
Wings - Finished
Fuselage - almost done
Panel and engine done.
On to fiberglass.
VAF Donation 2020
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10-11-2013, 09:38 PM
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Join Date: Feb 2007
Location: San Diego, CA
Posts: 1,670
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I'm betting that the forum opinion will be unanimous that you do the engine first and wait until the last minute to buy avionics.
Just a hunch.
Engine technology is proceeding at a glacial pace. Avionics technology is changing daily.
__________________
Pete Hunt, [San Diego] VAF #1069
RV-6, RV-6A, T-6G
ATP, CFII, A&P
2020 Donation+, Gladly Sent 
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10-11-2013, 09:41 PM
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Join Date: Sep 2007
Location: BC
Posts: 1,674
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Don't know about others but GRT sells the EFIS boxes with no guts inside(mine was $100 refundable) so you can fab/fit the instrument panel and make up all your harnesses ahead of time. This will save you from putting out $$$ for the EFIS until you need it, and the prices come down and/or features go up as you work on other parts of the plane.
Bevan
__________________
RV7A Flying since 2015
O-360-A1F6 (parallel valve) 180HP
Dual P-mags
Precision F.I. with AP purge valve
Vinyl Wrapped Exterior
Grand Rapids EFIS
Located in western Canada
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10-11-2013, 09:59 PM
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Join Date: Jan 2010
Location: Hampshire, IL
Posts: 276
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I'm at the same crossroad. I decided to do the engine, which I'm currently searching for.
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Ed Martin
Bluskydtl
RV7
DKB
Donations 1/19 & 6/19
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10-11-2013, 10:55 PM
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Join Date: Feb 2006
Location: Valley Forge, Pa
Posts: 636
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Engine
You will need to know what engine to order the right finish kit,avionics are outdated as soon as you buy them.
RHill
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10-11-2013, 11:31 PM
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Senior Curmudgeon
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Join Date: Sep 2005
Location: Dayton Airpark, NV A34
Posts: 15,408
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Quote:
Originally Posted by PCHunt
I'm betting that the forum opinion will be unanimous that you do the engine first and wait until the last minute to buy avionics.
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Yep, that is my vote.
__________________
Mike Starkey
VAF 909
Rv-10, N210LM.
Flying as of 12/4/2010 
Phase 1 done, 2/4/2011
Sold after 240+ wonderful hours of flight.
"Flying the airplane is more important than radioing your plight to a person on the ground incapable of understanding or doing anything about it."
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10-12-2013, 12:27 AM
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Join Date: Jan 2008
Location: KTCY
Posts: 643
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Engine ....
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Dave & Trina
RV-9A Flying - 330 Hrs. Painted Finishing the interior.
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10-12-2013, 07:26 AM
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Join Date: Oct 2007
Location: Iowa City, IA
Posts: 45
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Sounds like ENGINE it is...
Sounds like ENGINE it is...
Makes total sense with avionics getting up-dated very fast.
Thanks guys!
__________________
RV-7A Standard kit
Empenage - Finished
Wings - Finished
Fuselage - almost done
Panel and engine done.
On to fiberglass.
VAF Donation 2020
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10-12-2013, 08:07 AM
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Join Date: Sep 2007
Location: Central IL
Posts: 5,515
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Good choice ('cause I agree ) and you will need a lot of planning time for panel (and supporting hardware) locations, switches, and wiring runs all at the same time. Suggest you get installation dimensions and make some blocks for all the pieces to think through the process. Unless you have a solid modeler to make a complete design of the panel and forward fuse, that would be best.
This way, if you go to others for the panel assembly, you can specify wiring run lengths and split-offs from the main harness on the panel. I have spent unbelievable time in just thinking through making the wiring from my Stein build panel, making it neat.
Happy Building!
__________________
Bill
RV-7
Lord Kelvin:
“I often say that when you can measure what you are speaking about,
and express it in numbers, you know something about it; but when you
cannot measure it, when you cannot express it in numbers, your knowledge
is of a meager and unsatisfactory kind.”
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10-12-2013, 08:54 AM
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Join Date: Sep 2006
Location: Stockton, CA
Posts: 1,207
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I always advise my customers to not buy their avionics until everything else possible is done. Obviously there's some advanced planning required when it comes to cutting your panel, but the longer you can wait, the better. Avionics change so often, you never know what might be available when you're ready.
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