In terms of displacement, it's fairly simple math.<div>
</div><div>1 cubic inch = ~16.4 cc</div><div>
</div><div>So...you have a, say, OS 1.20 : </div><div>
</div><div>1.2 x 16.4 = 19.68</div><div>
</div><div>There, roughly, is your DLE 20 </div><div>
</div><div>You'll find some various discussion about the 2 types of motor, with one side saying one is "more powerful" than the other, etc...and, certainly, there are some differences in how each performs in given circumstances and scenarios.</div><div>
</div><div>Having said all of that, however, if you're simply looking to convert an existing airplane from one to the other, simply doing the math and getting close will suffice.  </div><div>
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