Log Entries for Baffling And Cooling
Log Entry Date: Apr 3, 2011
Baffling And Cooling
Baffle Chapt 10 - Ramps & Nose & Clips and such
Started the morning by trimming the nose baffles to fit the upper cowl. It took 3 or 4 iterations to get to the final shape. Again, I used a medium sharpie and 1" diameter rubber grommet as a guide for the marker. Easy peesy.
Continued on the nose sections but moved to the ramp/nose intersections. THe nose baffles have to be trimmed correctly in order to let the ramps sit at the right angle (to fit the cowl inlets). This was a pit of a pain to get right. Lot's of on/mark/off/trim/on/look repeat. This included the baffle parts and the cowl parts going off and on.
I did the #2 ramp angle first. The design of the filter clamp helped with the outboard side. It was easy to clamp and drill.
On the other side (the nose), after trimming the nose baffles, I used some scrap to clamp everything together, removed the cowl and then fabricated the two piece bracket that holds the #2 ramp at the crankcase end. Easy since the ramp was clamped in position.
I moved to the #1 ramp and spent the rest of the day here. After a few iterations, I had the ramp bend line identified and the nose baffle trimmed pretty close. I made the bend. Bent too far on purpose. Oooh, bent TOO far. Spent quite a few iterations flattening it back out. Finally got it. Marked the side baffle, bent it, drilled a couple of #40s to hold things together.
Took a break and made the 3 clips that go in the upper baffle joints between the cylinders. deburred, dimpled, cleco'ed into place.
Back to the #1 ramp. I fabricated the curved seal support gusset and got ti drilled into place.
At the end of the session, I fabricated a very small seal support gusset for the #2 ramp. This will have to integrate into the filter clamp. I did not drill it yet. Need to cogitate.
Continued on the nose sections but moved to the ramp/nose intersections. THe nose baffles have to be trimmed correctly in order to let the ramps sit at the right angle (to fit the cowl inlets). This was a pit of a pain to get right. Lot's of on/mark/off/trim/on/look repeat. This included the baffle parts and the cowl parts going off and on.
I did the #2 ramp angle first. The design of the filter clamp helped with the outboard side. It was easy to clamp and drill.
On the other side (the nose), after trimming the nose baffles, I used some scrap to clamp everything together, removed the cowl and then fabricated the two piece bracket that holds the #2 ramp at the crankcase end. Easy since the ramp was clamped in position.
I moved to the #1 ramp and spent the rest of the day here. After a few iterations, I had the ramp bend line identified and the nose baffle trimmed pretty close. I made the bend. Bent too far on purpose. Oooh, bent TOO far. Spent quite a few iterations flattening it back out. Finally got it. Marked the side baffle, bent it, drilled a couple of #40s to hold things together.
Took a break and made the 3 clips that go in the upper baffle joints between the cylinders. deburred, dimpled, cleco'ed into place.
Back to the #1 ramp. I fabricated the curved seal support gusset and got ti drilled into place.
At the end of the session, I fabricated a very small seal support gusset for the #2 ramp. This will have to integrate into the filter clamp. I did not drill it yet. Need to cogitate.