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150 Mercury Optimax prop rattle
I posted this in the Mercury forum, but only got one response. I thought I would ask for opinions here. I have a 2014 Bass Cat Margay with a 150 Optimax that I purchased last fall with only 7 hours on the motor. I recently replaced a Fury 3 with a Signature SL4 four blade prop. Prop works great for my needs. Better hole shot, handling and lift, especially with a tournament load. But I have developed a loud prop rattle in gear at idle. Goes away at 900-1000 rpms. I have the standard Flo-torq ll hub. I searched the posts on prop rattle and it seems the Flo-torq lll hub kit is for 90-115 hp and the Flo-torq lV is for Verados and four strokes. So which hub do I use for the 150 Optimax? The one suggestion I got was the Flo-torq ll with the bushing and torqued to 100 lbs. Thanks for your help.
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Mine rattles too. I'm getting rid of the POS. I noticed last week, my buddy's does too.
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I run a SL4 on my 250 Pro XS, with Flo Torq 11 with the bushing torqued to 100lbs. No rattle at all. Very smooth running prop.
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Just exhaust hitting the blades . Minds does it on my 2.5 200 Hp . I have a Bravo 1 and the first time i feel it , i that my lower unit was going out . It has been around 5 years now with out any problem. It still will caught still caught me off guard ,some times .