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newram05

New member
"I've got an 18ft fibergla

"I've got an 18ft fiberglass 1975 Signa S18. Has a 1975 Johnson 115hp Not really sure how much it weighs, but the prop is pretty chewed up and I dont really understand how to choose a prop. The numbers on the prop are: 391198 13 3/4 x 15

The boat currently will go about 27 to 30 mph at WOT. Activities will be occasional tubing and skiing and just leisure boating. Hope this helps."
 
In order to know if you have

In order to know if you have the best prop for your boat we need to know what your RPMs are at WOT (wide open throttle). If the prop is chewed up badly you can't get an accurate reading anyway. So if you don't have a tach and that prop has been performing well why not have it rebuilt and save some money?
 
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