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
Boedigheimer

Cruddy hole shot

5 posts in this topic

I have 90hp suzuki outboard with a stainless steel, 3 blade prop, not sure of the pitch. I run at about 5200rpm's.

My hole shot is terrible.

Can anybody make any suggestions as to improve my hole shot? More or less pitch? stainless or aluminum? I would be happy to give up some top-end speed if I could improve this. I have tried hydro-fins and it did help some.

And if I could slow my trolling speed (forward idle) which is about 2.6mph at 800rpm's, that would be a bonus.

Share this post


Link to post
Share on other sites

Dropping down in pitch will raise your rpms and give you more holeshot, at the expense of top end speed. Going to a 4 or 5 blade prop will give you more holeshot and better control at lower to mid-range speeds, at the expense of top end speed.

Both of those should help slow your trolling speed too.

Is your 800 rpms at forward idle accurate, ie. from a digital gauge? If so the idle speed could maybe be dropped also - not sure about that as I am not very familiar with your motor. But as an example my Opti idles in forward at 550 rpms.

Good luck and I hope some of this helps.

Share this post


Link to post
Share on other sites

What is the pitch of your prop? Is that a 2-stroke or 4?

I dropped down in pitch and lost a blade and my performance is probably as close to perfect as I can get. I'm running a 3-blade/16P. RPMs are within spec, and my trolling speed dropped too. I don't think the hole-shot is that bad at all, especially for a tiller with the offset weight in the rear.

Careful adding blades because I think sometimes you'll over-prop the boat and you'll go the other way, i.e. worse performance because the motor can't spin the prop. Think of a small car that has too high of gears....it can't accelerate. Bigger motors can handle the extra blades, but I know my 90 didn't like it real well. I had terrible hole-shot, no speed plus porpoising, and my trolling speed was too fast. It couldn't have been any worse!

Share this post


Link to post
Share on other sites

Quote:

Careful adding blades because I think sometimes you'll over-prop the boat and you'll go the other way, i.e. worse performance because the motor can't spin the prop. Think of a small car that has too high of gears....it can't accelerate. Bigger motors can handle the extra blades, but I know my 90 didn't like it real well.


A lot of that depends on prop diameter and blade area. If adding blades adds a lot of blade area to turn through the water, then you need to drop down in pitch. Example - of the 3 props that ran the best on my boat, the 3 blade and 5 blade are 21 pitch, the 4 blade (which has huge blades) is a 19 pitch. Right now I'm running the 4 blade.

Share this post


Link to post
Share on other sites

Thanks alot! Your advice was very helpful, I think I'm going to the boat dealer right now.

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