eman1200 Posted January 6, 2017 Report Posted January 6, 2017 does that gap look pretty big and droopy? could just be the angle of the shot but it looks off to me. what says y'all? Quote
Oldguy Posted January 6, 2017 Report Posted January 6, 2017 Assuming the horizon reflected in the spinner is level (big assumption), it does seem to have a bit of droop. Would be easier to tell with another shot from below the level of the prop to tell, though. Quote
eman1200 Posted January 6, 2017 Author Report Posted January 6, 2017 not to mention, a whole lotta oil 1 Quote
DVA Posted January 6, 2017 Report Posted January 6, 2017 My wife says "gravity sucks". I think your engine mounts would agree. Quote
mooniac15u Posted January 6, 2017 Report Posted January 6, 2017 M20J cowls can tend to ride up. You would need to look closely to determine how much might be engine vs cowl. Quote
kortopates Posted January 6, 2017 Report Posted January 6, 2017 I the primary issue would be how little clearance you have at the bottom of spinner to cowl. And if the clearance is further being reduced by any cowl lift in flight. If you do have any cowl lift you can talk to LASAR about a stiffening kit they sell for the J model. If it's only engine sag on the mounts you can look at re-shimming it if the mounts are in good shape. But in sum, you have different options to address different causes of the lost clearance. Sent from my iPhone using Tapatalk Quote
Bartman Posted January 6, 2017 Report Posted January 6, 2017 Had new mounts a few years ago but not in alignment afterwards so I had it re-shimmed according to Don Maxwell instructions below. Very pleased with the results. Mine was not as bad as yours, but has been in alignment for the past 3 years after the adjustment http://www.donmaxwell.com/publications/MAPA_TEXT/Alining Engine Using Shims/ALIGNING_YOUR_ENGINE.HTM Quote
Bartman Posted January 6, 2017 Report Posted January 6, 2017 I also had a lot of oil on the nose gear doors once and it was due to loose dual mag. It looked just like your picture. Quote
carusoam Posted January 6, 2017 Report Posted January 6, 2017 When my C demonstrated that much droop... 1) I looked at the engine's rubber mounts... they were still there. 2) I continued to fly the plane... the droop Disappeared... 3) a feeling of 'that can't be right' occurred... I know planes don't fix themselves. 4) stored outside, there are no transient hangar elves... 5) Check all weld points on the engine mount. Mine lost the tabs that were connected to the bottom bolt. The mount would sit on the mounting block one day and off it the next... 6) what's with all the oil running out the bottom? There may only be four small bolts holding the engine mount to the plane. Flying around with three is not recommended. If you are not sure what I mean, take a look at all four mounting bolts for the engine, post photos... Both sides of the firewall have been known to have weirdness related to engine mounts. Some Long Bodies have had insulation and carpet become involved with the hardware during the mount's installation. When the engine is mounted the insulation got squeezed and the bolts became loose... Private pilot only. Not a mechanic... Best regards, -a- Quote
mooniac15u Posted January 6, 2017 Report Posted January 6, 2017 That's not the OP's plane. It looks like it might be the M20J that George Perry posted about that was donated to AOPA. How recent is that photo? The plane in the background is listed as deregistered. Quote
eman1200 Posted January 6, 2017 Author Report Posted January 6, 2017 it is the aopa donated plane and I'm not sure how recent the photo is, I know I just got it today but that doesn't mean much. funny you mention that plane in the background, mooniac, I almost looked that up as well. Quote
Guest Posted January 7, 2017 Report Posted January 7, 2017 It certainly does not look correct. I'm not sure if the diameter of the spinner matches the diameter of the cowl. I know that the spinner on the 3 blade Hartzell is smaller than the cowl giving the illusion of drooping. Clarence Quote
carusoam Posted January 8, 2017 Report Posted January 8, 2017 Following what Doc has mentioned. It looks like a new Hartzel on the plane. It is possible that Hartzel has mis-matched the spinner diameter and the cowling. We would need a photo looking up from the bottom to judge if the gap is uniformly oversized, vs hanging low with a large gap at the top. My Hartzel spinner on the O is about 1/4" too small. Uniformly centered, of course! Best regards, -a- Quote
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