• RECEIVE THE GIFTS MEMBERS SHARE WITH YOU HERE...THEN...CREATE SOMETHING TO ENCHANT OTHERS THAT YOU WANT TO SHARE

    You know what we all love...

    When you enchant people, you fill them with delight and yourself in return. Have Fun!!!

  • 0
Sign in to follow this  
klw

prop suggestions

Question

klw

I am sure this question has been asked before but here is my problem. My boat is a Stratos 375 with a 115 Yamaha 4 stroke. The problem is that at wide open throttle I am only able to get about 4800-4900 RPM. WOT is rated at 5500-6000 RPM for this motor. I currently have a 13.5 by 18 prop. What way do I need to go with the pitch to increase the RPM? Is it worth the money for a new prop for the few extra RPM's?

Share this post


Link to post
Share on other sites

3 answers to this question

Recommended Posts

  • 0
OptiMax

Drop the pitch to up your RPMs. If your RPM range goes up to 6000 and your only turning 4900, you should do something about it.

Share this post


Link to post
Share on other sites
  • 0
TTfromBlaine

what happens if you keep trimming it up until you get to that rpm range?

Share this post


Link to post
Share on other sites
  • 0
DinkADunk

Well you get 200rpm's for every 1" drop, from 4900rpm to 5500rpm is 600rpm so you'll need a 3" drop in pitch. Try a 15" prop. You should look at a prop dealer who will let you exchange prop's (a 16" prop and trimming it differently might work best as might a progressive pitch).

Share this post


Link to post
Share on other sites
Guest
This topic is now closed to further replies.
Sign in to follow this  



  • Your Responses - Share & Have Fun :)

    • CigarGuy
      Was out for a while on the Partridge River this afternoon, didn't have any minnows, managed one 13" crappie on Gulp waxes.  But, the old Strikemaster almost bottomed out-close to 30" of ice.
    • SkunkedAgain
      I don't know what your Helix 7 requires in the manual, but a quick look would figure out if that 3amp is too small. Definitely wire your sonar to the motor battery using the correct gauge wire and fuse. If you connect it to another battery, it should be a stand-alone. Connecting to the trolling motor battery will generate interference.
    • SkunkedAgain
      I've done cheeks quite a few times and they are always good. They take only a few seconds to carve out. I like to get the most out of the things I kill to eat, so I'm not afraid to pull them out of smaller ones. I'm glad to see that so many people picked up a new tip. That's the point of congregating on these forums. I wonder how many non-registered folks will read this and learn something new.
    • CigarGuy
      I've been doing them for many years.  Like Cliff, a friend who was a guide on LOW brought some out prior to the main course-been doing it since. 
    • Tom Sawyer
      With the snow cover completely gone and lots of standing water, 60s in the forecast, with plenty of sunny days next week, and a good chance of rain mid-week; this may be my last weekend on the ice, South of Hwy 210 anyway . Fish have really been on the chew
    • Alex wilhelmi
      hey guys..i installed the helix 7. took it out the other day. it keeps  randomly shutting down, with the motor off it will stay on no problem. Heres where i think i f'd up. i used the same 3 amp fuse harness from the old sonar that came with the boat, the old hb depth only kind. its wired right to the ignition wire. i used the correct gauge wire where i needed it. im guessing its not getting enough juice? also if i wired it direct to a separate battery, how do i go about hooking up and on board charger? or would i be ok just wiring direct to the battery that runs the motor? thanks for any advice. those musky lures look so bad ass! nice work !!
    • delcecchi
      Really small scallops
    • delcecchi
      I think it is a matter of the material involved.   Ethanol can corrode some metal and dissolve some organic stuff like rubber or plastic that gasoline doesn't affect.   Or so some sources say.     
    • Tom Sawyer
      I guess I was being to kind. Nah nah nah nah, ....Turn out the lights already. LMAO!How Disappointing. Wolves your next......
    • ProGuideEyes
       Did you leave vermilion Tom???