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After cleaning they still feel good, but no have not put a feeler gauge in yet, have to bring tools to airport.
On August 23, 2019 at 2:37 PM "Bobby J. Hughes bhughes@qnsi.net" <flyrotary@lancaironline.net> wrote:
David, Have you measured the apex seal grooves to verify they are within specifications? Bobby From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net]
Sent: Friday, August 23, 2019 11:58 AM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: Broken Apex seal leads to dissassembly. https://chipsmotorsports.com/ is in Detroit. Can lap and renitride the irons. Are your rotor housing okay? Out of curiosity, what size rads do you have for coolant and oil ? On 2019-08-23 12:54:26 PM, David COOK hoursaway1@comcast.net <flyrotary@lancaironline.net> wrote: Am in need of info., where to send my irons ( all three), to be lapped or resurfaced, (or purchase some replacements) this is a 13B so the coolant seal grooves are in the irons. I am in Lansing Michigan for distance reference. This was supposed to be a "professional" built eng. w/aviation mods. the mods are ok, but the wear in the irons in the combustion area looks more like MANY hrs. of use. I only put 80 hrs. on the hobbs. 20 was ground testing the rest in the air. Temps ran 190F coolant, 202F oil, pretty regular. Lubrication was 1oz. 2cyc.oil and 1/2 oz. MMOil for every gal. fuel. On prep for Osh. trip the next day, wanted some T&G's, runup normal very strong could not hold back with brakes, aprox. 90% throttle about foot off runway started missing, set back down and at turn off to taxiway eng. quit running, had to lean EC2 all the way to left to get started again. Checked EM2 bar graph, all in center so not fuel MAP scramble. Thinking SAG (never experienced before so don't know the symptoms) changed plugs, no joy, tested coils, all ok, checked comp. no needle jump on 2 chambers, dissassem. found broken chunk from Apex seal rotor #2. Done crying now need to fix (short summer). David R. Cook RV6A Rotary Lansing MI
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