Originally Posted by KayS
Hi All, didn't find what i looked for in this forum... In preparation for first flight i sealed all that small leaks in the upper and lower baffling. Then i recognized a huge gap on the rear and lower part of cylinder 3 and 4. It's hard to see, I even had trouble to get my cell phone into place to make a pic.
The gaps are between the crank case and the lower "circle shaped" baffles that cover the inner portion of the cylinders. The gaps protrude pretty far to the top. I could throw at least three tubes of RTV on the problem but not sure if that is the correct way to deal with it. I see no chance to rivet something on.
What did you guys do here?
Any help is very appreciated.
RTV might go farther than you think. This is an often unseen, and large loss area. It was the worst I found the Vans M1B. I had the luxury, and luck, to find it early and removed the intersection fairing to bend and shape to get it a little better. You can (and should) make an extension for the RTV tube and get up in there more
easily. Not going to be pretty, but unseen anyway. Anyone who knows to look will appreciate the challenges.
Another thought - that intersection baffle is held up with a spring. IIRC, it is "stopped" by an edge up against the top fins of the cylinder. You might look straight from the side and see if that is too far out. If the gap is really big then it has to have shifted. If so a screwdriver could push it back towards the case and balance the gaps. It does float around quite a bit until held with the spring. You could release the spring and do a better job, just don't let go of that "s" piece that holds it up, out some safety wire on it.