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Sounds like a restriction in you inter cooler alright, Chris.
Yes, one of the thrills is getting more power out of your engine - the downside is more power = more waste heat your cooling system has to get rid of.
My calculations show that for 31.2" Hg at 6200 rpm with a fuel flow of 20 GPH (check what your fuel flow is now that you've got more air to burn fuel with), your set up could be theoretically producing 218 HP vs the approx 156 HP you were producing at 5700 rpm and 24.5" Hg.
So be prepared for a real kick in the pants on next take off. Perhaps you should install pilot hand holds like the Navy does for there catapulted aircraft - so the G forces don't force your hand back on the stick during take off. {:>)
Ed
Edward L. Anderson
Anderson Electronic Enterprises LLC
305 Reefton Road
Weddington, NC 28104
http://www.andersonee.com
http://www.eicommander.com
--------------------------------------------------
From: "Chris Barber" <cbarber@texasattorney.net>
Sent: Tuesday, August 21, 2012 7:49 PM
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
Subject: [FlyRotary] Turbo diagnosis update
When I got to the hangar this afternoon I jumped into a diagnosing my turbo problems. I checked out the turbo and it moved easily and freely with no noticble physical damage. I cranked up the engine, crawled under the wing and removed the hose from the intake and felt if I could feel any preesure out of the hose from the turbo. No joy. I couldn't feel any air movement. Ok, shut her down and went to the other side of the engine and removed the hose from the outlet of the turbo compressor. Cranked her up and felt for air out of the turbo compressor. I felt steady moderate air pressure. How about that. Data. I also could see the compressor spinning nicely.
So, I rigged an alternate plumbing route and bypassed my intercooler. I also removed the pop off valve as it over complicated the rigged plumbing.
I got it all buttoned up and started her up and recorded my readings like yesterday.
They were as follow:
2000 - 14.1
3000 - 15.4
4000 - 20.2
5000 - 26.4
6000 - 30.3
6200 - 31.2
Hmmm, seems more like it. So, it seems if I may need a new intercooler unless I am missing something.
The new power surprised me as in just the short time I was at the higher power setting, the time it took to write numbers down, I overheated. I have had no heating issues since I modified my radiator location back in April.
Again, this is with a 3 lb spring on the waste gate and 93 octane fuel
Thanks for y'all's input.
Chris Barber
Houston, GSOT
Velocity SE
13b turbo rotary.
Sent from my iPhone 4
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