Design plan is for the breather tube to be INSIDE the lower cowl? The breather tube on my RV7A protrudes about 5 inches below the cowl. I assume this is to deposit the blow by on the belly rather than inside the cowl. I'll just run a boroscope up in there and see what I can see.
Thanks
So, no "ice" hole in the crank vent tube (by design)..is that true?
I thought the plans show it terminated just above the exhaust pipe so byproducts burn off.
I thought the plans show it terminated just above the exhaust pipe so byproducts burn off.
I drilled a hole about 3" above the end. Insert a rod into the hole and bend the hole by swinging the rod upward. The hole will be shaped so any drips stay inside the pipe.
I will say that the whistle slot is important. I had the breather tube on our Cherokee freeze up on a very cold day in Wisconsin. Things were fine until we landed. During taxi back to the hangar, when the RPMs were lower, it apparently froze up. When I powered up to resume taxiing after a short stop, the front seal popped out, spewing oil all over the cowling. Glad it happened on the ground.