hilltop170 wrote:I got a PM asking about baffles in front of #5 and #6 cylinders. I think they are needed to keep #5 and #6 from cooling too much. My Airforms baffles have them but I do not have any pictures of them.
Well, isn't that interesting. The Airforms baffles that I bought recently don't have the vertical pieces in front of #5 and #6.
DSCN1242_cropped.jpg
Perhaps it's because the ragwing had different baffles entirely ...than the later 172 system.
When the front cyls run cold....they really foul/lead up the plugs, also. (Need hotter plugs and/or fine wires...but the best solution is to mfr front baffles, IMO.)
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Meanwhile...here's a comparison between the '53 and later 170-B model baffles...and the early 172 baffles. Notice the early 172 was identical to the B-model, until later serials...when front cylinder baffles were incorporated instead of the ones previously used:
Engine baffle 53.JPG
172 early baffles.JPG
172 early baffles listing.JPG
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'53 B-model N146YS SN:25713
50th Anniversary of Flight Model. Winner-Best Original 170B, 100th Anniversary of Flight Convention. An originality nut (mostly) for the right reasons.
gahorn wrote:
Perhaps it's because the ragwing had different baffles entirely ...than the later 172 system.
Well, yes, that is certainly true.
Perhaps I misinterpreted Richard Pulley's earlier post. I thought he said that his Airforms baffles for his 170A came with the upright pieces in front of the cylinders, and that he was attaching pictures of the 172 baffles to get the idea of the upright pieces across, since he had no pictures of the Airforms baffles in front of the cylinders on his 170A.
I will certainly be adding the upright pieces when I install mine (my current old wore-out baffles have had them for years).
Cessna® is a registered trademark of Textron Aviation, Inc. The International Cessna® 170 Association is an independent owners/operators association dedicated to C170 aircraft and early O-300-powered C172s. We are not affiliated with Cessna® or Textron Aviation, Inc. in any way.
I thought he said that his Airforms baffles for his 170A came with the upright pieces in front of the cylinders, and that he was attaching pictures of the 172 baffles to get the idea of the upright pieces across, since he had no pictures of the Airforms baffles in front of the cylinders on his 170A.