ORIGINAL: skiman762
ORIGINAL: khodges
Thanks for the replies. Looks like the LS Pro is the winner by a scant 1/8 inch. There's actually a tad more, maybe 1/2 overall, which will work. At least I know there's something out there. I thought my ZDZ-50NG was going to fit, but it missed by 1/2 inch with the plug cap on (this is for a 1/4 scale BirdDog). I'd rather not have to cut the cowl, even underneath, but I really want to use this engine, although the thought of the twin is attractive, since the cowl has those "nostril" intake holes in the front, you'd be able to see the cylinders. Lots of time to think it over
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How are going to cool it if you don't open the cowl up ?
What I meant was, not open the cowl or make holes where there aren't any on the full scale. Of course the scale inlet openings will be there, as well as an opening at the bottom where the exhausts exit the cowling, which is also sufficient for airflow through the cowl. I'll also have baffling inside to direct air over the cylinder if I stay with the single. If I go with the twin, each cylinder will have a hole directly in front of it. There is no right thrust on the plans, and I won't add any.