• Welcome to the Checkmate Community Forums forums.

    You are currently viewing our boards as a guest which gives you limited access to view most discussions, articles and access to our other FREE features.
    By joining our free community you will be able to:

    » Interact with over 10,000 Checkmate Fanatics from around the world!
    » Post topics and messages
    » Post and view photos
    » Communicate privately with other members
    » Access our extensive gallery of old Checkmate brochures located in our Media Gallery
    » Browse the various pictures in our Checkmate photo gallery

    Registration is fast, simple and absolutely free so please, join our community today!

    If you have any problems with the registration process or your account login, please contact support by clicking here or by using the"contact us" link at the bottom of the page.

Prop Selection

I

InCheck04

New member
My boat is a 2004 1600BR with a 2 stroke Johnson 115 V4. I have a 13.5x19 SS prop right now and I just got my tach working today. I went out for a little blast and I it looks like the prop is too "short" for my setup as it turns about 6300 rpm with no trim and just snapping the throttle. This motor supposedly makes peak power at about 5000 RPM according to the manual. So I'm way out of the power ban. I have a 13.5 x 22 Renegade SS prop that I think I should swap to bring the rpm down. Is this a good setup or should I look to another prop with more pitch?

Thanks Mates
 
Trial and error. Since you already have the prop, and they are quite easy to install I say go for it and see what happens!
 
Looks like you need more prop that 22 might be the ticket 6300 rpms is way to high thats like pulling the pin.
 
prop selection

I'll reply if it's not too late. I hope you didn't waste a lot of money on props because I doubt you are running 6300. While you didn't state your speed or year of motor. Your new tach is probably on the wrong pin for the alternator. Five pin for 10 pole alt or 6 pin for 12 pole. It will make a 20% difference in the RPMs. Go to this site to determine your setup. (10 to 12% slip):
http://www.rbbi.com/folders/prop/propcalc.htm
 
You must log in or register to reply here.
Back
Top