I can be an a-hole at times. I admit it... I had a "dog whisperer" come talk to my Golden Retriever last month because it won't stop digging up the shrubs and she said the dog is doing it because I'm an a-hole sometimes. She dug up a shrub yesterday. Sorta a barometer if you will.
I think some others here said it well. Putting props on boats is always an engineering compromise and stating your boat and you are "underpowered and frustrated" after some other dork complained he could never get into a 40 foot Sundancer because he's not used to going less than 40 mph made me wonder about what the heck people expect. I grew up boating on northern Lake Huron and I can't imagine a boat like these could get anywhere near 36 mph let alone 25 mph on a typical day (because of the seas).
Gas engines get their HP and torque at high RPMs and if you want a prop that loads up the engine properly through the RPM range, you are not going to get a lot of thrust at idle... I had a 380 DA and had to always "gas it" to spin it around... wasn't a bad thing... it's just what it was...
You don't want to overload your engines with "more bite" and bigger props if it prevents you from getting to WOT spec.. plus your performance will go down and your engines will not be happy. As trit21 says, throw some of your fat Canadian girlfriends in bikinis and some beer on the boat and see what it does (I paraphrased his remarks). Based on the published spec printed on Sea Ray's website, you should still be able to get to 5200. Sea Ray spends a lot of time making sure the props are right on the boats... I would have to be hard pressed to understand why an Internet forum "expert" would have more knowledge than Sea Ray or Mercruiser and tell you to get bigger props... Seriously... Call Sea Ray customer service and talk to them... they don't bite (similar to your props)... they are pretty friendly and will send you all kinds of performance data for your boat design.
Now comes the good part... if you want good performance at idle with props that "bite" and you don't want to "gas it," GET DIESELS!!!!
I think some others here said it well. Putting props on boats is always an engineering compromise and stating your boat and you are "underpowered and frustrated" after some other dork complained he could never get into a 40 foot Sundancer because he's not used to going less than 40 mph made me wonder about what the heck people expect. I grew up boating on northern Lake Huron and I can't imagine a boat like these could get anywhere near 36 mph let alone 25 mph on a typical day (because of the seas).
Gas engines get their HP and torque at high RPMs and if you want a prop that loads up the engine properly through the RPM range, you are not going to get a lot of thrust at idle... I had a 380 DA and had to always "gas it" to spin it around... wasn't a bad thing... it's just what it was...
You don't want to overload your engines with "more bite" and bigger props if it prevents you from getting to WOT spec.. plus your performance will go down and your engines will not be happy. As trit21 says, throw some of your fat Canadian girlfriends in bikinis and some beer on the boat and see what it does (I paraphrased his remarks). Based on the published spec printed on Sea Ray's website, you should still be able to get to 5200. Sea Ray spends a lot of time making sure the props are right on the boats... I would have to be hard pressed to understand why an Internet forum "expert" would have more knowledge than Sea Ray or Mercruiser and tell you to get bigger props... Seriously... Call Sea Ray customer service and talk to them... they don't bite (similar to your props)... they are pretty friendly and will send you all kinds of performance data for your boat design.
Now comes the good part... if you want good performance at idle with props that "bite" and you don't want to "gas it," GET DIESELS!!!!
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