If there was some kind of mathematical formula to figure out the perfect all around pitched, raked, diameter, cupped or uncupped size prop using the HP and size/weight/type boar/motor, that would be great...but it seems there isn't and it's specific to each application so....it's my turn to ask the prop question
sorry. Took my new (used) boat out last night after i slapped the prop from my bass boat on (basically, the first time out with the boat) and it did horribly. Dragged real bad out of the hole (trimmed all the way down and every which way) until finally getting her on plane - 37mph, 3800rpm (tach correct, crossed referenced with meter) I could get it up on the r's a little more by fully trimming out but it didn't increase speed, seemed to slip more and caused the bow to buck like a bronco. This is what's involved:<br /><br />* 86' wellcraft 192 cuddy 19', 170 Mercruiser w/Alpha 1, calls for 42-4600rpm<br /><br />*prop used - SS, can't find a name anywhere, stamped on side = 600 171 9 HO and up near the front edge, hand scribed M25<br /><br />my luck, it's a custom prop and last nights readings are a waste. o'well. I know i could possibly go to my local reputable marina and ask to try out a few props to dial it in but, if i could save $50-75 bucks and not paying more $$$ to the Gov by getting the correct prop over the net, i will. If your a small mom and pop retail shop, sorry. I know this hurts, first hand (sports shop) So, i'd hate to go and ask for help and then after i figure out what i need, turn around and stab him by buying it elsewhere. If it comes down to it, i'll have to pry the $$$ from the bosses (wife) purse and just buy it locally
Thanks for any help in advance. And if you happen to have 10 different diameter, pitched, raked blahblah props just laying around, please, feel free to send them to me, free of charge.
