Onex Turbo Performance update
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- เผยแพร่เมื่อ 8 ก.ย. 2024
- Prop Prince P-Tip for aerovee turbo 54"x50 pitch
Sorry about the fuzzy focus on the panel. Now that my engine/turbo issues are all dialed in it's time to just fly!!!! Super happy with the performance now. I have not been full throttle yet but when I hit 43" OMG you can feel it pull. I flew the first 30 something hours at 33" max so every once in a while I dial my take off back just to compare.. fun stuff...... I want a faster prop now..
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thank you 4 sharing I really enjoyed it
Glad you enjoyed it!
You can’t cool egt externally… egt is the temp within the exhaust chamber. No amount of airflow on the exterior of the exhaust will have any effect on egt. Egt is the temp at which the exhaust is leaving the cylinder head. If you want to lower egt you need a higher octane fuel. Looking at your Map HG’s you are running roughly 8lbs of boost. 93 octane will most definitely cause high EGTs but if you switched to a fuel like 100 octane your egt problem will most likely cure itself. If you really want to rectify the problem then run c16.
8lbs of boost with pump gas in a engine that runs a constant load is a recipe for detonation and high EGTs. It’s easily correctable and there are plenty solutions to make your engine run high boost safely for long periods of time with low EGTS and no detonation.
#3 egt was scarin the hell outta me.
Good comment. CHTs are the numbers that reflect engine stress - with Lycoming 360s, one really needs to keep them under 400 degrees, so it was a bit of a concern to see the Aerovee's at 420. Different engine I know, but CHTs are the numbers that I am generally more concerned with.
@@Artoconnell th-cam.com/video/fqe9j74qMdk/w-d-xo.html Savy Aviator super great info on EGT
@@sactu1 Aerovee max CHT is listed at 450. But after listening to Mike Bush the Savy Aviator I try to keep it under 400 (see link in comment above) . Super educational
Thanks for the update Ben!!!
You bet. Are you flying something?
Thanks for sharing your real-world experience Ben! Been watching what a great job you've done! How light did it end up at the end?
Actually Its pretty heavy the turbo added around 25 lbs. and at the time my shoulder was bad so i built an electric lift seat that added 25lbs. They list empty weight at 600 and i"m at 670ish... so I eat a cheese burger and I'm at gross.
@@1bengrubb DOUGH! Salad for you! Would love to come visit sometime... down near KTOA
@@steveh9714 dang yer waaaay down there.. I'm going to try and get to Byron just east of san fran this week. I'm going to be a test pilot for www.tetra-gofly.com/ for the month of august and part of September in Byron. I'm super excited.
@@1bengrubb That sounds amazing! have a blast!
@@1bengrubb So if you were going to fly higher like 8-10k, how big of a cruise prop would you go for with your turbo?
Kewel 😊
Like to see a rotax in one of these. All these issues with heat go away.
Well its not like its a heat issue...I just cant climb as fast as I could if I had BETTER cooling....a rotax just takes money and all the radiators n stuff might not fit.
@@1bengrubb I get it, just really like the Sonex but it seems like every video I watch the EGT are getting hot and they have to back off the throttle etc. Never seen that with a Rotax of course that is all I have flown in the Light Sport category.
@@joeshmooo5327 If you cannot overheat your rotax there is probably more power available that you're not getting. Heat is just one more thing I have to manage with the extra power.
Dialed in for cross country trip!
Hope to do a practice run just east of San Francisco this week
It is strange that external cooling would affect EGT temperatures so much. The probe should be inside the exhaust. You would have to have some serious heat soak from the turbo to affect it. You should show a layout of the engine bay.
Yep the turbo right by #3 egt and it's a tight fit
Your fuel flow seems a bit high considering you're running a max of 100hp. A Cessna 150 with the O-200 (100hp) at 75% power burns right about 5 gph, a C-172 at 75% about 7.5 gph. Are the Aero-Vee engines that inefficient that they run as much as they do?
I"m just learning all this so my goal then was to keep EGT below 1400 so I was running super rich. After listening to the Savy Aviator th-cam.com/video/fqe9j74qMdk/w-d-xo.html I learned the goal is to watch CHT . After going to Ohio last summer ONEX vs USA I was running 5gph at 140mph! I just now got a faster prop so I anticipate my fuel burn to go up some. Super fun stuff and a lot of learning..
I'd love to see how well that engine holds power up to 12.5k
Also curious about ias and tas at 17.5k
Just for science :)
And just wondering if the turbo will continue to make full power up there.
Gasoline burns with oxygen.if I can maintain manifold pressure then I'm maintaining the same volume of air entering the engine the only question is what percent of that volume is still oxygen.... Calculate that percent and you know what the horsepower is.... I'll have to try it!
@@1bengrubb Percentage of oxygen at sea level or altitude is the same, atmospheric pressure is what changes. If you an maintain 30" at altitude you'll have sea level O2, HP and probably still make 80hp.
The aeroconversions page shows cruise speeds at 8000ft of 170-175mph, and WOT speeds of 187mph with specific props on Sonex/Waiex aircraft. The B-series kits hold 20gal instead of 15, so you can burn a bit more fuel to maintain higher cruise speeds too.
@@cousineddie7444 yaaaaaa no. brochures are nice..
@@1bengrubb What does that mean? You don't think those aircraft can hold those speeds with that engine?
Great video!
Great glad you like it thanks!
Do you feel that you have all the pre-ignition issues worked out? I’m assuming it was possibly from the lead build-up? Maybe I missed the video but did u figure out the root cause?
Cured!! th-cam.com/video/cNxu301ukvY/w-d-xo.html at 2:00 it shows the lead build up. 1. I overlapped the oil ring 2. caused oil to pool. 3. oil made a cool spot(??) on head 4. caused lead to precipitate on that spot. 5. High power load setting (take off) would make lead glow 6. pre-ignition. I'm using decalinchemicals.com/ invented by a chemist in my home town!! Fall River Mills CA. --town of 400 people. Actually I lived 8 miles from that in Glenburn.
Hey wheres your S14 , I am going to buy one . I want to try 3 axis compared to my trike
Hey buy mine! $7500