Thread: Not getting listed max rpm

Originally Posted by lawless

Ok its a 20 foot crest pontoon plate says max hp is 70hp. i have a 2004 60hp bigfoot motor. As far as weight just 1 12gal fuel tank , 3 batteries,toon alone is 1725lb motor is 225lb,and me 212lb and some fishing gear when i did the water test..

O.k., You're fine in the motor dept. Come down a bit in pitch and that will get your rpm's up, it may even get you a bit more top end due to being able to spin the prop at the right speed.

Originally Posted by DockShootinJack

My 4 stroke 60 CommandThrust will reach 6000. I usually run it around 5000 rpm. I need to get a Stainless prop for it and move some weight around

Does having a SS prop really make a difference over aluminum

Originally Posted by lawless

Does having a SS prop really make a difference over aluminum

Has it always felt the same power wise? Or does it feel lacking like something is off mechanically. Generally toons are propped large for top end, because hole shot doesn't matter and steering is more important. Make sure you have the correct motor and gearbox selected on the Mercury prop tool, it being a CT youll use less pitch since its a bigger prop but i would have thought 13P area would be perfet, you must have it loaded.


You won't notice any difference with SS vs alum in the same prop design with a toon.

The 50s and 60s really do like to be ran high, 5500-6000rpm so you do need to drop some pitch. I would drop 2 pitch and you should be better off, 11p 4 blade.

The other thing is your block and oil temp is cold, things move a lot better when they are warm vs 32f, youll gain at least 100rpm on a nice summer day. Probably more like 200.

Originally Posted by lawless

Does having a SS prop really make a difference over aluminum

Aluminum flexes and that will change the pitch. Prolly negligible on a 60hp though.

Originally Posted by Kevin22

Has it always felt the same power wise? Or does it feel lacking like something is off mechanically. Generally toons are propped large for top end, because hole shot doesn't matter and steering is more important. Make sure you have the correct motor and gearbox selected on the Mercury prop tool, it being a CT youll use less pitch since its a bigger prop but i would have thought 13P area would be perfet, you must have it loaded.


You won't notice any difference with SS vs alum in the same prop design with a toon.

The 50s and 60s really do like to be ran high, 5500-6000rpm so you do need to drop some pitch. I would drop 2 pitch and you should be better off, 11p 4 blade.

The other thing is your block and oil temp is cold, things move a lot better when they are warm vs 32f, youll gain at least 100rpm on a nice summer day. Probably more like 200.

not loaded just me the toon , motor 12 gal fuel and some fishing gear..
did some digging it has 120 deg tstat so block temp is correct..

Originally Posted by lawless

Does having a SS prop really make a difference over aluminum

My aluminum was a little boogered up on the edges when I got it. Stainless is just more durable

Originally Posted by DockShootinJack

My aluminum was a little boogered up on the edges when I got it. Stainless is just more durable

Ive just heard that if you hit something with the ss prop its not as forgiving as a aluminum prop..

Props now have rubber bushings that are supposed to reduce the risk of damage. My goal is to avoid hitting anything.