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You are correct in that it is the exact same engine, the Lycoming IO360-L2A as you mentioned. The difference is in the propeller, namely the propeller RPM limits. I don't have the numbers in front of me but prop on the 172S is rated for higher RPM, and therefore 20 more BHP, and as a result, an extra 100 lbs of useful load. Additionally, there is a conversion (STC) available to swap out the prop on the R model with the S model prop (most often done at prop overhaul time) giving it the extra horsepower and useful load of the S model.

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What is L24R teaching method?

I cannot find that on my search engine -- check to be sure you spelled it correctly. The best way to learn something is to do the work yourself, so check your textbook for the answer. You can also use a search engine on your own to type in what you want and get instant results!

Related Questions

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