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09-16-2015, 03:46 PM
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Join Date: Apr 2009
Location: pittsburgh pa
Posts: 16
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RV-4 With Automobile engine ground run up
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09-16-2015, 04:51 PM
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Join Date: Jan 2007
Location: fort myers fl
Posts: 949
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interesting, wonder what he has planned for the cowl. I might suggest that next time use a set of chocks and tie the tail down.
bob burns
N82RB RV-4
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09-16-2015, 05:22 PM
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Join Date: Sep 2007
Location: Central IL
Posts: 5,516
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At first glance, this looks like a good engine match for the RV4. Hopefully we will hear/see more about this installation. It appears to sit with heads on top, assuming that box on the front is the drive unit. Also, wonder if it retains the factory ECU with all the associated benefits like timing and knock control. So many questions!
__________________
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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09-16-2015, 06:15 PM
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Join Date: Nov 2008
Location: Shreveport, LA
Posts: 1,002
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I don't know how this guy expects to complete a test flight if he cant keep his emotions in any better check than what he did during that ground run....  
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09-16-2015, 07:37 PM
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Join Date: Mar 2005
Location: Calgary, Canada
Posts: 5,766
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Quote:
Originally Posted by BillL
At first glance, this looks like a good engine match for the RV4. Hopefully we will hear/see more about this installation. It appears to sit with heads on top, assuming that box on the front is the drive unit. Also, wonder if it retains the factory ECU with all the associated benefits like timing and knock control. So many questions!
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Caption says Megasquirt ECU. The cowling design will be interesting to see. This is an inline four, hence the need for the long belt drive to get the thrust line close to stock for prop clearance. Around 145hp depending on version. Hope we can learn some more and hear how it works.
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09-16-2015, 07:52 PM
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Join Date: Sep 2011
Location: WV22
Posts: 849
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I can picture it now. That is going to be one ugly cowl! Maybe it was the camera angle but the prop/ ground clearance looks close.
__________________
RV-4 0320\D3G 160, Whirlwind 200GA 70".
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09-16-2015, 08:06 PM
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Join Date: Mar 2005
Location: Dallas area
Posts: 10,768
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Quote:
Originally Posted by n82rb
I might suggest that next time use a set of chocks and tie the tail down.
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Along with the fact that I never saw even a smidgen of "UP" elevator.
Even when the tail began to get light, I saw neutral elevator at best.
__________________
Mel Asberry, DAR since the last century.
EAA Flight Advisor/Tech Counselor, Friend of the RV-1
Recipient of Tony Bingelis Award and Wright Brothers Master Pilot Award
USAF Vet, High School E-LSA Project Mentor.
RV-6 Flying since 1993 (sold)
<rvmel(at)icloud.com>
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09-16-2015, 08:13 PM
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Join Date: May 2005
Posts: 377
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made me nervous
A little up elevator would make me feel better.
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Charlie "T.Bear" Guarino
Springtown, TX
RV-4 Flying again with a fresh overhaul
Exempt but paid
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09-17-2015, 04:40 AM
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Join Date: Apr 2009
Location: pittsburgh pa
Posts: 16
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I didn't use the factory ECU as it requires a code to operate from the body control computer. Custom tuning with the Microsquirt better matches the aircraft reqirements also. My cowl is complete - will show it in a later post. It appears smewhat ungainly.
Took six months to fabricate from scratch s-glass over a wood and plaster buck.
Yes - the box up front is the PSRU - cog belt driven.
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09-17-2015, 04:51 AM
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Join Date: Apr 2009
Location: pittsburgh pa
Posts: 16
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photo of cowl
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