Guests - If You want access to member only forums on FM. You will gain access only when you Sign-in or Sign-Up on Fishing Minnesota.

It's easy - LOOK UPPER right menu.

Sign in to follow this  
Followers 0
Travis

hole shot

6 posts in this topic

I own a 18foot skeeter zx175 with a 175hp evinrude.The prop on it is not marked as to what size pitch it is. the problem is very bad hole shot.Just wondering what size and pitch I should be running and 3 vs 4 blade.I have a 3 blade stainless now and was thinking on trying a 4 blade instead. confused.gifany info would be great grin.gif

Share this post


Link to post
Share on other sites

What are you getting for max rpm right now? And to answer your question about 3 vs 4 blade, generally a 4 will give you hole shot. The important thing though, is to not exceed the max rpm at the top end.

Share this post


Link to post
Share on other sites

my max rpms is right around 4800 to 5000 witch i didnt think was to bad and the boats top end is around 63 mph but all i do is dig a deep hole and it seems to take forever to get out of it.

Share this post


Link to post
Share on other sites

Thats too low. You should be turning around 5500. I sure would think somewhere on the prop, the pitch and diameter are stamped. But you need to drop in pitch. you're just lugging the motor down. It would also be helpful to know the year of the engine to look and see what exactly the max rpm is. But 4800-5000 is not enough.

Share this post


Link to post
Share on other sites

The pitch and diameter probably aren't stamped on the outside of the hub - you'll likely have to remove the castle nut and washer and sometimes it'll be stamped on the prop under the washer - otherwise, pull the prop off and look on the side that seats into the lower unit - sometimes it's stamped there.

And I agree with boatfixer - you're not turning near enough RPM's, suggesting to me that you've got too high pitch prop, explaining your lack of holeshot.

by the way.. you almost always sacrafice top end speed for holeshot - the key is to have a good balance of both.

marine_man

Share this post


Link to post
Share on other sites

Quote:

by the way.. you almost always sacrafice top end speed for holeshot - the key is to have a good balance of both.


Generally true. However, there are some props that have ventilation holes in the hub near the leading edge of each blade. These create a mini-blowout, of sorts, on the initial lauch that helps to get the prop RPM higher out of the hole.

Other notes to the OP, 3 blade generally better for top speed/performance. 4 blade generally better for hole shot and stability/handling.

Of course, there is more to the prop than just pitch. There is also rake to consider for the type of boat and engine mounting.

Lot of information about props on the Web...

Share this post


Link to post
Share on other sites
Guest
This topic is now closed to further replies.
Sign in to follow this  
Followers 0



  • Posts

    • MinnesotaBoatman
      I was up there about ten days ago and the snow and lake ice were melting fast.
      The forecast for the next week looks good for making ice.
    • BartmanMN
      Dean iced over today.  Schmidt has ice about 30 yards out then open water. Been a few years now, Pelican may be snappin' again. 
    • eyechoholic
      This year started out like last year but starting tonight the temps are nothing like last year. There will probably be vehicles by the 26th. I'm still feeling good about sleds on the 17th.
    • hayseed
      Cheapest I've found is Proctor Builders. 
    • Ray Berg
      Last year it was Dec. 26th before they opened the road up out of Morris pt. for 4 wheelers. Thinking its looking like that again this year. Hope I can hold out. Between the ice show and this website getting very fired up.