Does anyone have access to drawings or sketches for the baffling or airbox for the 750 stol with the o-235? Id like to build as much from scrat h as possible, plans would just  make it a little eaiser. Thanks

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The book "Tony Bingelis On Engines" has plans to make your own templets and baffles. That is how I made mine for my 0-235 C1B. Check AS or Amazon. I purchased his book several years ago for less than ten dollars on Amazon. I believe Van's used to sell a templet, but not sure if they still do

There is a book for sale on Amazon for 14.00 dollar now.

Does it show dimesnions for the baffling? I know how baffling is to work, im just looking for sizing to fit the zenith cowling. Thanks

It gives you a scaled drawing that will work with the 0-235. I took poster paper laid out a 1" grid and drew the different parts. I then fitted the poster board on the actual engine to make sure they fit. Then I transferred the templet to .020 6060 T6 and cut the parts out and installed. A little time consuming, but it was less than 50 bucks for book, & aluminum

You know after I saw a completely enclosed baffling, instead of webbing around the edges using the cowl  to seal the top of the engine, I simply bent an aluminum top and completely sealed the engine. Only took a couple of hours. Again I used poster paper large enough to cove the entire top of the engine ,marked a line around the baffling, bent a 1/2" flange and cut, notched as necessary for a nice clean fit. Then transferring it to aluminum. It is in stalled on my 601 and the cowling fits just fine. 

do you need an engine mount for conical 0-235

Yea i like that setup. A little easier than trying to match up the baffle seal as tight fitting as possible. No i have a dynafocal mount already, thanks though.

Ok thanks. I found and ordered the book. Time consuming is fine with me, I just didn't want to spend the 900$ on the zenair canada kit.
Jeff, I bought the airbox from zenith Canada and I recommend you build your own because the fit is not particularly good. It's also expensive nearly $400. If you purchase the cowling from Zenith you also know that it doesn't fit very well. I had to cut a section out of the bottom of it and join it to bring it together about 3 because it was far too wide. Good luck and if you have any questions that I can answer give me a call I have just about completed the entire aircraft now and I'm waiting for a hanger. I am at area code 937-266-3360.

I figured i might modify a typical airbox. Great, who doesnt love some fiberglass work, ha.

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