Matronics Email Lists Web Forum Interface to the Matronics Email Lists    Get Email Distribution Too!    FAQ   Search   Memberlist   Usergroups   Register   Profile   Log in to check your private messages   Log in  Search found 11 matches Matronics Email Lists Forum Index Author Message   Topic: 80% RPM Minimum after prop change to Whirlwind Penco Replies: 5 Views: 1596 Forum: Yak-List   Posted: Fri May 22, 2026 12:55 pm   Subject: Re: 80% RPM Minimum after prop change to Whirlwind Okay so, I found the problem. It is the one writing the message. The fine pitch angle was wrong, Everything works as advertised now. Sorry for wasting everyone's time You live and you learn   Topic: 80% RPM Minimum after prop change to Whirlwind Penco Replies: 5 Views: 1596 Forum: Yak-List   Posted: Wed May 13, 2026 3:08 pm   Subject: Re: 80% RPM Minimum after prop change to Whirlwind Yes, I called Whirlwind (Hartzell now) and they're also stomped. I'll keep trying and report if I find a solution.   Topic: 80% RPM Minimum after prop change to Whirlwind Penco Replies: 5 Views: 1596 Forum: Yak-List   Posted: Wed May 13, 2026 12:57 am   Subject: Re: 80% RPM Minimum after prop change to Whirlwind Well, the way I understand it the governor uses oil pressure to decrease pitch. Not to coarsen it. So I don't really see how more oil pressure would help me ? It feels like the blades are restri ...   Topic: 80% RPM Minimum after prop change to Whirlwind Penco Replies: 5 Views: 1596 Forum: Yak-List   Posted: Tue May 12, 2026 10:52 pm   Subject: 80% RPM Minimum after prop change to Whirlwind Hello Gents, I have researched the forums a little but can't seem to find a solution to our problem. We just changed our blades from the original V-530 blades to a W530 (not the scimitar design) ...   Topic: Cracked oil temperature probe housing Penco Replies: 2 Views: 3526 Forum: Yak-List   Posted: Thu Jul 28, 2022 5:42 am   Subject: Cracked oil temperature probe housing Hello, We have found a crack in our Yak-52's oil temp probe housing causing a relatively significant leak. Nothing dangerous but we want to keep things tidy after a recent engine change. We tried t ...   Topic: Tach needle wobbles Penco Replies: 6 Views: 5845 Forum: Yak-List   Posted: Tue Mar 23, 2021 10:35 am   Subject: Re: Tach needle wobbles Ok guys, thanks. Since it is still usable as is and it seems to be a delicate job, I'll wait until I find a professional to give me a hand. Cheers   Topic: Tach needle wobbles Penco Replies: 6 Views: 5845 Forum: Yak-List   Posted: Tue Mar 23, 2021 9:04 am   Subject: Re: Tach needle wobbles Hello, I tried it also at higher RPM and same thing. Plus I've tried mags and everything runs normally on that front. I'm almost positive it's the instrument and not the engine.   Topic: Tach needle wobbles Penco Replies: 6 Views: 5845 Forum: Yak-List   Posted: Tue Mar 23, 2021 6:57 am   Subject: Tach needle wobbles Hello, I'm encountering an issue with my RPM gauge on a Yak-52. It wobbles. I tried tightening everything on the engine pickup and it seemed to fix the trouble but after a few minutes of warmup, th ...   Topic: Engine Vibration Penco Replies: 20 Views: 20144 Forum: Yak-List   Posted: Wed Apr 03, 2019 10:30 am   Subject: Re: Engine Vibration Hey guys, update on the thing. It turned out that (pardon me for the lack of technical terms) the screw on top of the intake valve's push rod of cylindre 9 was completely loose. Preventing it from ...   Topic: Engine Vibration Penco Replies: 20 Views: 20144 Forum: Yak-List   Posted: Wed Mar 27, 2019 5:22 am   Subject: Re: Engine Vibration Hello Dennis, The engine vibrates whether or not the cowlings are installed. I didn't check the rubber mounts, I figured if they would be damaged it would shake at all RPM... Any specific things ...   Topic: Engine Vibration Penco Replies: 20 Views: 20144 Forum: Yak-List   Posted: Wed Mar 27, 2019 3:04 am   Subject: Re: Engine Vibration Hello guys, I'm reviving this topic because I'm coming short of an explanantion. Bit of history : Bought the aircraft last year. It worked fine and then, some 5 month ago (didn't fly with it sin ...   Page 1 of 1 All times are GMT - 8 Hours Jump to: Select a forum Matronics Email List Forms----------------Aerobatic-ListAeroElectric-ListAllegro-ListAnPMech-ListAviation-ListAvionics-ListBeech-ListCadet-ListCessna-ListCitabria-ListCommander-ListContinental-ListCorvairEngines-ListCorvette-ListCub-ListCzech-ListEngines-ListEuropa-ListEZ-ListFalco-ListFEWMustang-ListGlasair-ListHomebuilt-ListJabiru-ListJabiruEngine-ListKIS-ListKitfox-ListKR-ListKolb-ListL29-ListL39-ListLancair-ListLightning-ListLom-ListLycomingEngines-ListM14PEngines-ListMurphyMoose-ListPelican-ListPietenpol-ListPiper-ListPitts-ListPulsar-ListRans-ListRocket-ListRotaxEngines-ListRPA-ListRV-ListRV3-ListRV4-ListRV6-ListRV7-ListRV8-ListRV9-ListRV10-ListRV12-ListRV14-ListRVCanada-ListRVEurope-ListRVSouthEast-ListSailplane-ListSeaplane-ListSkymaster-ListSmithMini-ListSonerai-ListStinson-ListStratus-ListTailwind-ListTaylorcraft-ListTeamGrumman-ListUltralight-ListWarbird-ListXDP4000X-ListYak-ListZenith-ListZenith601-ListZenith640-ListZenith650-ListZenith750-ListZenith701801-List  Powered by phpBB © 2001, 2005 phpBB Group