Notices

Propeller magicians in western Wa

Old 08-13-2019, 09:07 PM
  #1  
DCD
Admirals Club Admiral's Club Member
Thread Starter
 
Join Date: Feb 2013
Posts: 57
Default Propeller magicians in western Wa

Situation: 2008 Andros 26 CC with Porta bracket and G2 250 HO with Powertech OFS4/19 pitch. Boat runs 44-46MPH with 4 adults and full fuel (100 gal) and light equipment. RPM is too high at 6-6100RPM, correctly trimmed and correct lower unit depth. (Boat used to run 51mph with G1 300 etec, Rev 4, 19 pitch, 2 person, 1/4 tank and light load...it was a great set up, except for some porpoising which required significant tab. )

Question: who does excellent propeller fine tuning and pitch adjustment in WA state?

How much should I expect a good prop artist to be able to increase pitch on the OSF4 and what pitch should I expect to reduce me to 5700rpm (optimum range) 20 or 21? I know there are other characteristics, i.e. cupping etc. that I'm not schooled about and all expertise is appreciated regarding potential improvements to my prop. Or, are there other suggestions for a different prop? I don't have the opportunity for testing different props (live in eastern WA), but checked with the boat builder and they suggested a Rebel 19. My concern is that it is a three blade and I need as much stern lift as I can get.

DCD is offline  
Old 08-14-2019, 06:11 AM
  #2  
Admirals ClubCaptains Club Member Admiral's Club Member
THT sponsor
 
Join Date: Aug 2003
Location: Sarasota FL
Posts: 7,085
Default

I'd try a Revolution 4 just like you use to run.
that said, 250 HP, 46 MPH is about what to expect. but the Rev 4 is a fast prop.

19 pitch, 6100 RPM at 46 is 20% slip, little higher then normal.

Do you still have the Rev 4 from your old motor?
ken2 is offline  
Old 08-14-2019, 06:38 AM
  #3  
DCD
Admirals Club Admiral's Club Member
Thread Starter
 
Join Date: Feb 2013
Posts: 57
Default

Ken,?
Thanks for the reply. Yes, I still have the REV4, but am not by it at the moment. I think that prop has a pressed hub and my understanding is it won't fit the G2 shaft. Can that hub be pressed out so I can use a removable hub so I can change back and forth between the G2 and the G1?
DCD is offline  
Old 08-14-2019, 01:33 PM
  #4  
Admirals ClubCaptains Club Member Admiral's Club Member
THT sponsor
 
Join Date: Aug 2003
Location: Sarasota FL
Posts: 7,085
Default

Yes, I'm Ken,
Your Revolution 4 has a Flo Torq 2 style hub. which you can easily remove and put a different hub in.

The Quicksilver Hub kit for a G2 motor is 8m0107220
get that hub kit and throw your Rev 4 on there. let us know what it does !
ken2 is offline  
Old 08-14-2019, 08:11 PM
  #5  
DCD
Admirals Club Admiral's Club Member
Thread Starter
 
Join Date: Feb 2013
Posts: 57
Default

Ken,
Thanks for the reply. I will get the hub kit and give it a try, but it will be a bit before I can get it on the boat. I will keep you informed.
DCD is offline  
Old 08-17-2019, 08:57 PM
  #6  
DCD
Admirals Club Admiral's Club Member
Thread Starter
 
Join Date: Feb 2013
Posts: 57
Default

Okay,
New hub is supposed to be here Tuesday, so I started trying to remove the current hub in the Rev4/19 prop that was on my 2009 G1, 300 Etec. After a lot of effort and pounding with a correctly sized drift, the splined component finally came out. The slotted portion, however, doesn't budge, which brings me to my question. The hub assembly has an outer portion with the prop ID numbers on it, a middle, metal (white in the pic) portion that is about 1/8 inch higher than the outer portion, and the inner, non metal slotted portion. Should I only pound/press on the non metal slotted portion or on the middle, metal portion to remove? I have searched for information about this but haven't found it yet.

I will send a 2nd picture next. Thanks for any help.


DCD is offline  
Old 08-17-2019, 09:03 PM
  #7  
DCD
Admirals Club Admiral's Club Member
Thread Starter
 
Join Date: Feb 2013
Posts: 57
Default Pic 2


DCD is offline  
Old 08-18-2019, 05:58 AM
  #8  
Admirals ClubCaptains Club Member Admiral's Club Member
THT sponsor
 
Join Date: Aug 2003
Location: Sarasota FL
Posts: 7,085
Default

Only the non metal/plastic slotted piece comes out.
I use the same 1-1/16th socket that I use to take the prop nut off with. It will fit down in the hole and sit right on top of that black plastic hub. then you can hit it with a hammer and drive the hub out.

That said, the new hub that your getting is going to use the same plastic drive sleeve. So you can just leave it in there.
Keep the black plastic drive sleeve that comes with the new hub on the boat as your spare if you ever spin a hub.
ken2 is offline  
Old 08-18-2019, 06:11 PM
  #9  
Junior Member
 
Join Date: Jul 2019
Posts: 14
Default Ken2 question

Originally Posted by ken2 View Post
Only the non metal/plastic slotted piece comes out.
I use the same 1-1/16th socket that I use to take the prop nut off with. It will fit down in the hole and sit right on top of that black plastic hub. then you can hit it with a hammer and drive the hub out.

That said, the new hub that your getting is going to use the same plastic drive sleeve. So you can just leave it in there.
Keep the black plastic drive sleeve that comes with the new hub on the boat as your spare if you ever spin a hub.
ken,

Iíve been hearing that OEM Suzuki props are pitches 2 inches higher than what they are labeled. Do you know anything about this. Because Iím running 23pitch. Prop at 6150 and hitting 53...those slip numbers canít be correct, hence the reason I think the my OEM Suzuki prop is really a 25p labeled as a 23. Iím wanting to switch to a Tempest Plus and thinking about starting 25p, both props are roughly the same diameter 14.75 and 14.68
Frontier2104Df200a is offline  
Old 08-18-2019, 06:20 PM
  #10  
Admirals ClubCaptains Club Member Admiral's Club Member
THT sponsor
 
Join Date: Aug 2003
Location: Sarasota FL
Posts: 7,085
Default

I don’t know which Suzuki motor you have. So I don’t know what slip ratio your seeing. But I normally expect 0-4% slip.
Sometimes negative slip numbers.
I expect around 10-13% slip on the tempest. So pick your pitch on that.
ken2 is offline  
Old 08-18-2019, 07:34 PM
  #11  
Junior Member
 
Join Date: Jul 2019
Posts: 14
Default

Originally Posted by ken2 View Post
I donít know which Suzuki motor you have. So I donít know what slip ratio your seeing. But I normally expect 0-4% slip.
Sometimes negative slip numbers.
I expect around 10-13% slip on the tempest. So pick your pitch on that.
i have df200a 2.5 gear ratio. So what number would you start with the Tempest?
Frontier2104Df200a is offline  
Old 08-18-2019, 08:04 PM
  #12  
DCD
Admirals Club Admiral's Club Member
Thread Starter
 
Join Date: Feb 2013
Posts: 57
Default

Thanks Ken. I'll try it with the original drive sleeve
DCD
DCD is offline  

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are Off


Thread Tools
Search this Thread