KitLog pro

Powered By Kitlog Pro v2.0

Building Integrity
' style=
Date:  4-21-2018
Number of Hours:  6.00
Manual Reference:  Section 2
Brief Description:  Exhaust design and layout begins

The new exhaust design begins with the idea that simplicity is priceless. No more longer pipes requiring cowling space and complex bends or brackets. It also leads to less heat inside the cowling, and a maintenance free installation. No more EGT probes since I can't lean the mixture anyways. She will end up looking like a street Rod here soon. The only downside will be added drag and/or turbulent air going into the prop, so to tackle the downside I came up with 2 "helper" ideas and began cutting pipes to make it happen.
Idea #1 was to run the pipes from Cyl 1 and Cyl 2 inside the cowling, and slightly facing the prop hub which is the ideal exhaust exit location. The other 4 pipes will exit outside the cowling at a 40 degree angle aft and sticking out into the wind about 2". The pipes inside the cowling will help pump heat out during ground operation, and the remaining 4 will still sit inside the boundry layer, being a very low drag profile. Nevertheless, the exhuast velocity will still interupt airflow to the prop. At some point I "may" add another bend in the pipes to direct the heat straight back vs. the 40deg angle, but we'll see how fast I am first :)
I used a protractor and template to draw the angles I would need on the 3 pipes that would need to be cut and welded to match the other 3 that were already good from UL. I then cut and trimmed each pipe for several hours until they all were at the same 40 deg exit. It took some creativity, but they are now over at the Tig welders shop and will be finished on Monday. :) Fun Times.
' style=

creative bends required

creative bends required

' style=

40 deg for each pipe

40 deg for each pipe

' style=

checking the cut angles

checking the cut angles

' style=










Copyright © 2001-2024 Matronics. All Rights Reserved.