Will changing from factory aluminum prop to SS aftermarket increase rpm's

[4.3sunbird]

Re: Will changing from factory aluminum prop to SS aftermarket increase rpm's

walleyehed: <br />since you mess with so many props can you look at my thread <br /> <br /> http://www.iboats.com/cgi-bin/ubb/ultimatebb.cgi?ubb=get_topic;f=24;t=014200;p=#000003

 

[walleyehed]

Re: Will changing from factory aluminum prop to SS aftermarket increase rpm's

I've posted a few questions for ya sunbird...

 

[Scali]

Re: Will changing from factory aluminum prop to SS aftermarket increase rpm's

Walleyehead,<br />after having taken out a lower unit after striking slab of cement with an SS prop & seeing this happen 3 times in 3 years where I docked @ my last marina before I started trailering & hearing from other boaters, reading posts about SS props taking out LU's when striking rocks pretty easily .. As I mentioned I " respectfully " do not believe that when a direct hit occurs with a SS prop on a rock that 9 out of ten times the hub slips resulting in no damage as you quoted.....<br />Sorry.. Maybe 10 % of the time the hub will slip resulting in no damage..<br />Been there, done that, seen it a few times..<br />You mentioned you test props for a living ?<br />You run them into rocks ?

 

[walleyehed]

Re: Will changing from factory aluminum prop to SS aftermarket increase rpm's

You mentioned you test props for a living ?<br />You run them into rocks ?

I test props part-time, as well as new trinkets from some marine manufacturers...as for your question...<br />Yes, I have...I've run into rocks that bent blades badly, and have sheared a skeg clear off on one occasion, and never have I damaged a lower unit, gears or propshaft....I have spun more than my share of hubs though.<br />To be honest with you, I've seen about as many lower unit failures with aluminum props as I have from direct lower unit strikes where it wouldn't have mattered whether it was SS or aluminum...hitting a blade is one thing, smacking the front of the gearcase is another.

 

[moderator1]

Re: Will changing from factory aluminum prop to SS aftermarket increase rpm's

Moving to the new Prop questions and Topics forum in General boating...