Madhatter Posted November 25, 2018 Report Share Posted November 25, 2018 Does anyone know if the ctsw cowling is set up for the 2.5 degree offset. I measured the cowling and the left side is 1 3/8 longer than the right. Link to comment Share on other sites More sharing options...
WmInce Posted November 26, 2018 Report Share Posted November 26, 2018 3 hours ago, Madhatter said: Does anyone know if the ctsw cowling is set up for the 2.5 degree offset. I measured the cowling and the left side is 1 3/8 longer than the right. A couple of years ago, I inquired Flight Design USA regarding that question. To the best of my knowledge, the CTSW cowling is designed with a right offset of 2.5°. What’s more, when the prop spinner is centered on the cowling, designed engine droop is approximately -5°. I was told jigs are used in the construction of the cowlings. Link to comment Share on other sites More sharing options...
Madhatter Posted November 26, 2018 Author Report Share Posted November 26, 2018 The top of my prop spinner was always pretty even with the top of the cowl. I measured the angle of the engine relative to level point between the seats and came up with 3.5 degrees. I used a level point across two rocker cover bolts. -5 degrees would not look right on the spinner. Of coarse the fuselage level location seems poor so I guess I will stay with what I have. The 2.5 degree lateral offset had been adjusted relative to the center of the cowl opening which apparently is wrong so I will change that. Thanks for the confimation on the cowl. Link to comment Share on other sites More sharing options...
WmInce Posted November 26, 2018 Report Share Posted November 26, 2018 If you closely inspect the front part of the entire cowl, you will see that the offset (to the right) and the engine droop is built into cowls. The extended portion of left vs. right and up vs. down are not symetrical. It take a keen eye to see it, but it is there. Take a close look sometime. Link to comment Share on other sites More sharing options...
FlyingMonkey Posted November 30, 2018 Report Share Posted November 30, 2018 The cowling built with the offsets in theory should make the alignment job easier; you should be able to shim the mount until the spinner is centered in the opening with the cowl on and it should be pretty close to correct. Link to comment Share on other sites More sharing options...
WmInce Posted November 30, 2018 Report Share Posted November 30, 2018 6 hours ago, FlyingMonkey said: The cowling built with the offsets in theory should make the alignment job easier; you should be able to shim the mount until the spinner is centered in the opening with the cowl on and it should be pretty close to correct. That is what I was told by Dave Armando, former Director of Maintenance, Flight Design USA. Link to comment Share on other sites More sharing options...
Madhatter Posted December 1, 2018 Author Report Share Posted December 1, 2018 The lateral dimension yes. The vertical dimension is calculated relative to the line between the wing pins ( I checked with Flight Design USA ). The best I can get is 3.5 degree relative without the spinner looking way out of place, top of spinner about even with the top cowling. Plane fly's great. Link to comment Share on other sites More sharing options...
SteveC Posted October 13, 2020 Report Share Posted October 13, 2020 Quite glad I found this thread. Had to remove my engine on the weekend and had to do a double take when I saw just how much angle there is *before* I started removing the engine mount.... Pic attached. https://photos.app.goo.gl/uvamkzxsN1vdwWjW9 Link to comment Share on other sites More sharing options...
Recommended Posts
Archived
This topic is now archived and is closed to further replies.