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Search: Posts Made By: Onewinglo
Forum: RV General Discussion/News 05-30-2018, 01:48 PM
Replies: 25
Views: 2,782
Posted By Onewinglo
QT Halo

I have both Lightspeed Zulu 2s and QT Halos. I mostly use my QT Halos for the following reasons:
I can wear a big hat for sun protection.
No ear cup seal for my glasses to interfere with.
My Halos...
Forum: RV-8/8A 04-20-2018, 06:57 PM
Replies: 31
Views: 6,776
Posted By Onewinglo
Tom, Thanks for sharing your experience on this...

Tom,
Thanks for sharing your experience on this issue. I'm sure you are correct about the exit air should be aligned with the slipstream. After tuft testing and pondering everyone's suggestions the...
Forum: RV-8/8A 04-17-2018, 12:39 PM
Replies: 31
Views: 6,776
Posted By Onewinglo
Dave, we have not flown enough to get any real...

Dave, we have not flown enough to get any real performance data yet. I'll call it "In Progress" and I'll report back when we have something.
We have noticed a modest increase in CHT and maybe oil...
Forum: RV-8/8A 04-17-2018, 11:39 AM
Replies: 31
Views: 6,776
Posted By Onewinglo
Mike, you are correct in that the bottom surface...

Mike, you are correct in that the bottom surface does curve up a bit. I see how that could disturb air flow. Thanks for the Coanda effect concept. We may incorporate the shape if we modify this...
Forum: RV-8/8A 04-16-2018, 12:12 PM
Replies: 31
Views: 6,776
Posted By Onewinglo
Baseline Tuft Testing (W/O Sub Cowl)

I removed our SubCowl, tufted the belly and recorded the results. The exit flow from the Sam James cowl was pretty good. Better than we expected. Looking closely at the sub cowl we can see where...
Forum: RV-8/8A 04-12-2018, 04:09 PM
Replies: 31
Views: 6,776
Posted By Onewinglo
Baseline

Brian,
Baseline is a good idea. I had not considered that. Our sub-cowl is easy to remove so I may take it off, tuft and record a flight.
Thanks!
Forum: RV-8/8A 04-11-2018, 05:03 PM
Replies: 31
Views: 6,776
Posted By Onewinglo
Inflection Point?

Kyle, I hate to display my ignorance, but is the inflection point on the following edge of the exit opening?
Thanks!
Forum: RV-8/8A 04-11-2018, 04:52 PM
Replies: 31
Views: 6,776
Posted By Onewinglo
No frontal area increase

No we did not change the frontal area of the lower cowl. We simply added the sub cowl and changed/reduced the exit in an effort or reduce cooling drag. The link below has a couple images that will...
Forum: RV-8/8A 04-10-2018, 04:43 PM
Replies: 31
Views: 6,776
Posted By Onewinglo
The inlets are the standard round inlets that...

The inlets are the standard round inlets that come on the James cowling. We built a custom plenum that cools very well.
Thanks for the comments.
JP
Forum: RV-8/8A 04-10-2018, 04:25 PM
Replies: 31
Views: 6,776
Posted By Onewinglo
Thanks for the pointers Steve. Yes the leading...

Thanks for the pointers Steve. Yes the leading edge has a large radius that spans up to the ramp (cooling channel) above. Therefore, it must be the adverse gradient you pointed out. Thanks for the...
Forum: RV-8/8A 04-10-2018, 12:36 PM
Replies: 31
Views: 6,776
Posted By Onewinglo
Thanks for the pointers Dan V. The camera is a...

Thanks for the pointers Dan V.
The camera is a GoPro Hero 5. The mount was a Cessna strut mount attached to the gear leg with a double ball and socket arm. The ball and socket was fine at 160 mph...
Forum: RV-8/8A 04-10-2018, 12:28 PM
Replies: 31
Views: 6,776
Posted By Onewinglo
So Far, So Good

Its better than we expected so we are calling it a success, so far. I'm interested in CHTs and oil temp in the heat of the summer AND any noticeable change in performance flying high and fast. ...
Forum: RV-8/8A 04-10-2018, 11:21 AM
Replies: 31
Views: 6,776
Posted By Onewinglo
Tuft Testing RV-8 Sub-Cowl

My partner and I felt we were overcooling our O-360 XP so he designed and built a sub-cowl to reduce the exit opening and reduce cooling drag. We expect the reduction in exit opening will increase...
Forum: RV-8/8A 04-04-2018, 04:06 PM
Replies: 12
Views: 2,219
Posted By Onewinglo
What Heat?

I wish I had your dilemma of how to direct the heat. My -8 has no heat at all. When I joined the project partnership the airplane was about 80% complete and my partner had decided against adding...
Forum: RV-8/8A 12-06-2017, 11:59 AM
Replies: 13
Views: 2,955
Posted By Onewinglo
Axel, no I did not subtract the area of the...

Axel, no I did not subtract the area of the exhaust - good point. Makes the exit area a little less Huge.

jrs14855, Thanks for the note about the Dave Anders articles in Kitplanes. I found the...
Forum: RV-8/8A 12-05-2017, 06:48 PM
Replies: 13
Views: 2,955
Posted By Onewinglo
Thanks for the reply guys. Yes 84 inches is...

Thanks for the reply guys. Yes 84 inches is correct. The opening measures 13.750" wide (at the middle of the trapezoid) and 6.125" high.
My partner and I were looking at how we could cut and raise...
Forum: RV-8/8A 12-04-2017, 12:50 PM
Replies: 13
Views: 2,955
Posted By Onewinglo
Thanks for the ratio Robin8er. Kevin I did read...

Thanks for the ratio Robin8er.

Kevin I did read The Shrinking Exit some time back. I'll revisit the thread.
Thanks for the reminder.
Forum: RV-8/8A 12-04-2017, 11:31 AM
Replies: 13
Views: 2,955
Posted By Onewinglo
Overcooling the RV-8? (Warning Long Post)

Guys I suspect we are overcooling our RV-8 engine and suffering with excess cooling drag in the process. We built and installed a nearly leak free plenum.
The James Cowling exit area appears to be...
Forum: RV General Discussion/News 05-05-2017, 03:21 PM
Replies: 77
Views: 16,795
Posted By Onewinglo
PCP said No Problem...

My PCP read the document, conducted the exam and signed the document.
No problem.
Forum: RV General Discussion/News 04-29-2017, 04:01 PM
Replies: 30
Views: 6,981
Posted By Onewinglo
Our plenum...

Thanks for the information guys. This a big help to us new folks like myself.
My partner had bought the James plenum but elected to build from scratch. We have had excellent cooling with CHTs about...
Forum: RV-8/8A 04-23-2017, 12:20 PM
Replies: 44
Views: 18,194
Posted By Onewinglo
Bruce, I'll be happy to pay for the parts if you...

Bruce,
I'll be happy to pay for the parts if you have them. We just signed off Phase one on our -8 and I would love to make a mirror. I'll PM my address.
Thanks, JP White
Forum: RV-8/8A 12-26-2016, 06:50 AM
Replies: 59
Views: 26,513
Posted By Onewinglo
SB Complete

I saw the Service Bulletin Tuesday evening and emailed it to my partner. Next morning Mitch said "I'll bet money those bolts are not in there". A quick inspection revealed 12 missing bolts in the...
Forum: RV General Discussion/News 09-15-2016, 07:57 PM
Replies: 15
Views: 3,749
Posted By Onewinglo
Best video I've seen in quite a while and I love...

Best video I've seen in quite a while and I love the sound track! We should have our -8 in phase one by November. Can't wait!
Forum: RV-8/8A 08-10-2016, 03:58 PM
Replies: 39
POH
Views: 7,302
Posted By Onewinglo
Me too please! Thanks! jp_white@att.net

Me too please!
Thanks!
jp_white@att.net
Forum: RV General Discussion/News 05-13-2016, 04:01 PM
Replies: 84
Views: 15,071
Posted By Onewinglo
Just left the airport where a friend has a...

Just left the airport where a friend has a retriever named Buzz.
Showing results 1 to 25 of 25

 
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