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Good morning Shaps. I just posted a request for the PowerPoints on sanitation hose replacement and wasn’t sure if that was the best way to contact you. Would you please send them to me at klgmlg@aol.com

Great post! I’m starting this repair now a d have a couple guys in the engine room struggling with the hoses. Would you email me the power points please? Klgmlg@aol.com. Many thanks, Keith

Wow that's a substantial reduction. The DB is 4000lbs heavier so that will make a difference but I have a tender on the swim platform that weighs 775lbs. I read Tony's articles again and he says to reduce prop enough to increase rpms 150-175. The prop shop guy tells me that will be about 28X33...

I should also mention that we have a 11’ Boston Whaler center console with a 25hp on the swim platform that decreases performance. It weighs 750bls.

The prop shop guy said that reducing 1” would increase rpm about 80 and he would not reduce below 33.5 which is about 120 rpm. My thought is better a little too much than not enough. I hardly ever push the throttle to the pins and the governor should prevent an over speed. In your case taking...

I've read most of Tony's articles on QSM11's and he emailed me this morning that he can't tell me what prop reduction I need without running the boat at 1900 rpms and checking fuel flow. For scheduling reasons I am trying to make a prop adjustment before heading out on a 1200 mile trip so my...

Has anyone with a 52DA with Cummins QSM11's reduced prop pitch to extend the exhaust and turbo life of their engines and if so what pitch? Both sets of props came from the factory and are EQY 28x35. Apparently they overload the engines throughout the moderate cruise power range.

I have another inquiry and probably will also start another thread but wanted to ask you for comments. I suspect exhaust leaks after reading the Seaboard Marine article on the effects of over loading the engines with a prop with too much pitch (from the factory). The pics in his article look...

I’m in the ICW alot with the slow idle switch engaged and it is more pronounced in that condition. When I bump up past idle it’s smooth. I’ll isolate each engine to see if it’s one or both. It’s somewhat comforting to hear that it’s not abnormal. Thanks for the response. I live in Arkansas and...

I’ll check to see if there is a split when I’m on the boat next trip. Thank you for the ideas.

I’ve owned a 2006 52DA for a couple of years now and it has always vibrated some at idle speed but smoothes out at about 1000 rpms. The props have been tuned. Is that normal or do I have something like a bent shaft? Or could the motor mounts be out of adjustment?