4 Blade Prop

[shrimp92]

I have a 1980 20HP Mercury . I was thinking about trying a 4 blade prop. But I thought it might lag the engine lag to much being a 20 HP. It's the COMPROP from Cabelas. $57.99. Anyone have any experience with 4 blade props on smaller motors. They have 10.5 X 11 or 10 X 13. I'd appreciate your input. Thanks.

 

[north40]

Re: 4 Blade Prop

I can't help you as to performance improvements with 4 blade props on small hp. I think the comprops are not durable enough as a primary prop. Spare emergency prop, OK. They are prone to severe damage if you impact underwater obstacles.

 

[ronnieboy]

Re: 4 Blade Prop

i've been using a comp prop on my 4stroke 30 horse merc for 6 yrs. love it, makes boat come out better and better fuel economy. they arent as tough as alum, but they dont tear anything up when you strike something, i use mine alot in the ohio river and mississippi, lots of floatind debris, only on my second one. good luck ron

 

[JB]

Re: 4 Blade Prop

Prop topic.

 

[walleyehed]

Re: 4 Blade Prop

As far as pitch goes, 11 or 13, we need to know the max rpm it turns with the prop you have now.<br />Now, if you are worried about hitting objects, don't waist your money on composite...go SS.<br />The first time you rub something wrong with the composite, it cracks and you buy another when it throws a blade...there is the price of the aluminum...the second object you hit, you'll have almost payed for an SS prop...<br />Any, and I mean ANY prop can ruin a gearcase...<br />Think about that before purchasing #1.