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04-25-2016, 07:05 AM
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Join Date: Oct 2005
Location: 08A
Posts: 9,500
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Quote:
Originally Posted by jswareiv
Cylinder #2 runs hot and until I get the wheel pants on, I'll have to limit more flying. Hopefully more speed, less drag will help that. I have been having to fly it rich to help keep it below 400, so I'll be replacing some spark plugs, but better than replacing cylinders.
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Speed will help, but it's not the root of the problem. A 390 can be cooled at low speed and high power. Look hard at sealing. If you don't get it straightened out in Phase 1, fly it up here.
This was all knobs forward from 200 to 15,000, a data gathering run at 125 knots true all the way. Full rich, cowl door open, so a fair equivalent to where you are now.

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Dan Horton
RV-8 SS
Barrett IO-390
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04-25-2016, 07:59 AM
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Join Date: Dec 2006
Location: New Orleans, LA
Posts: 474
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CHT temps.
Quote:
Originally Posted by DanH
Speed will help, but it's not the root of the problem. A 390 can be cooled at low speed and high power. Look hard at sealing. If you don't get it straightened out in Phase 1, fly it up here.
This was all knobs forward from 200 to 15,000, a data gathering run at 125 knots true all the way. Full rich, cowl door open, so a fair equivalent to where you are now.

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Thanks Dan, I'll keep monitoring it.
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Stoney
First RV-14 Flight 04/17/2016
Serial #140087, N214SW - Sold
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04-25-2016, 08:23 AM
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Join Date: Feb 2014
Location: St. Louis, MO
Posts: 16
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Congrats!
Congratulations on the first flight! Just watched the video on your website. I love to see RV Grins! 
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04-25-2016, 09:45 AM
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Join Date: Nov 2008
Location: KY
Posts: 102
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Thanks! Great timing.
Stoney,
Congratulations! and thanks for the motivation. It comes at a great time for me as I just finished inventorying my fuselage kit and have that overwhelming feeling of, what am I supposed to do with all of these non-deburred parts.
Thanks again for the motivation, I look forward to more photos, videos, and performance info.
Sincerely,
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Greg
RV-14A Fuselage Complete.
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04-25-2016, 11:40 AM
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Join Date: Dec 2011
Location: Livermore, CA
Posts: 6,797
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Do you have the same air dams in front of #1&2 cylinders as the -10? Many of us have cut them down to lower the front cht's.
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04-25-2016, 02:29 PM
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Join Date: Feb 2005
Location: Wisconsin
Posts: 612
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Bob,
Thankfully on the RV-14 they are removable, so it wouldn't be too hard to experiment. It may be worth taking them off and creating new ones that are slightly shorter for #2 and seeing how it goes.
Tim
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04-25-2016, 02:41 PM
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Join Date: Dec 2006
Location: New Orleans, LA
Posts: 474
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Quote:
Originally Posted by BobTurner
Do you have the same air dams in front of #1&2 cylinders as the -10? Many of us have cut them down to lower the front cht's.
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I'm not sure if they are the same as the 10, I was thinking about removing it, but first I am going to see if the wheel pants help.
__________________
Stoney
First RV-14 Flight 04/17/2016
Serial #140087, N214SW - Sold
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04-26-2016, 06:54 AM
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Join Date: Jan 2014
Location: Ramstein, Germany
Posts: 18
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Slow?
Just curious about the 'slow' comment...more in reference to acro or general performance?
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Sean 'Fog' Leaman
USAF // F-15E Eval WSO
Future RV builder (maybe -8, er -14, er -10....)
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04-26-2016, 07:40 AM
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Join Date: Dec 2006
Location: New Orleans, LA
Posts: 474
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Acro & Speed
Quote:
Originally Posted by eriddler
Just curious about the 'slow' comment...more in reference to acro or general performance?
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Acro was normal, full loop with no issues and a couple of rolls, easy breazy. I shouldn't say it is slow yet, because I've had to stay at lower altitudes <4,000'. I haven't gotten over 145KTS yet. Once I get the wheel pants on, I will post again with any change in the numbers. I am hoping that will solve my cylinder temp issue, then I'm going to take it up to 8,000' and see what it will do. I'm expecting at least 180KTS. Definitely within the next couple of weeks.
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Stoney
First RV-14 Flight 04/17/2016
Serial #140087, N214SW - Sold
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