force propeller question

cuenta

Petty Officer 2nd Class
Joined
Apr 26, 2011
Messages
137
what is the name of this rubber ring that is put into the back of the propella
that is broken but can not find the name to order or part number
thank.

IMAG0140.jpg
 

Frank Acampora

Supreme Mariner
Joined
Jan 19, 2007
Messages
12,004
Re: force propeller question

You should not need that ring. It is a plastic piece that clips over the OUTSIDE of the hub to adapt the propeller to larger gearcases. You can probably simply throw it away.
 

cuenta

Petty Officer 2nd Class
Joined
Apr 26, 2011
Messages
137
Re: force propeller question

you think i do no need put back
is a force 120 hp
because i broke 2 prop. hub this week because had shift cable and neutral switch problem
just bought a in ebay 13 x 15
i have a saved 13 1/2 x 23 i think too bigger
not know if I can use or not
thank frank
 

Frank Acampora

Supreme Mariner
Joined
Jan 19, 2007
Messages
12,004
Re: force propeller question

No, you should not need to put the ring back--I don't know why it was put inside the prop in the first place.

Depending upon the size of your boat, the 13 1/2 X 15 may or may not keep the engine in the correct RPM range. HOWEVER it is almost a certainty the the 13 1/2 X 23 will be too big for your engine unless your boat is a very small racer type.
 

cuenta

Petty Officer 2nd Class
Joined
Apr 26, 2011
Messages
137
Re: force propeller question

is a bayliner cobra 17 ft
1200 pounds

IMAG0131.jpg
 

Frank Acampora

Supreme Mariner
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Re: force propeller question

WOW! That is a nice Bayliner. Did it come equipped with a tachometer? You want the engine running in the range of 4500-5500 RPM at full throttle. I suspect that the 15 pitch prop will let the engine over-rev a bit. A 13 X 17 would probably be more correct, and depending upon how well the boat performs, a 13 X 19 is not out of the question.

If you have other Force owners near you see what they are running and try to do a deal with a person or marina to test a prop before buying.
 

jestor68

Commander
Joined
Jun 12, 2012
Messages
2,308
Re: force propeller question

That prop hub looks like it's been run without a thrust washer in place(hub looks chewed up). What year model is that motor?
 

cuenta

Petty Officer 2nd Class
Joined
Apr 26, 2011
Messages
137
Re: force propeller question

no have tachometer
i think force use 20 pole
is the next thing I'm buying
 

cuenta

Petty Officer 2nd Class
Joined
Apr 26, 2011
Messages
137
Re: force propeller question

is 120 hp i think 1990
the serial number is lost
 

cuenta

Petty Officer 2nd Class
Joined
Apr 26, 2011
Messages
137
Re: force propeller question

Frank
this ring is that i'm talking

covering ring.jpg
thank
 

Frank Acampora

Supreme Mariner
Joined
Jan 19, 2007
Messages
12,004
Re: force propeller question

102_6800.jpg102_6793.jpg103_6265.jpg103_6268.jpgThat converging ring is only used on OMC engines. Your Force does not need it. In fact, if you are buying Force propellers, there will be no provision for attaching a ring. Most have a simple flare.

The last photo shows a Vortex prop with ring attached. However, this is factory installed and I don't think you can buy one separately.
 

cuenta

Petty Officer 2nd Class
Joined
Apr 26, 2011
Messages
137
Re: force propeller question

frank another question we can run the engine without the exhaust snout
because the propeller that I have touched the snout

yes is a big prop.
13 1/2 x 22
 

Frank Acampora

Supreme Mariner
Joined
Jan 19, 2007
Messages
12,004
Re: force propeller question

102_6372.jpg102_6374.jpg102_6376.jpg102_6373.jpg

It is POSSIBLE but not very good to run without the exhaust snout. Apparently (from what I read in another post) running without the exhaust snout does not cause major problems at high speeds but it does foul the prop at hole shot (Acceleration from a dead stop.) 22 pitch will be far too much prop for that engine and boat combination though.

However, if you search my posts here on the prop forum you will find simple modifications I did to the lower unit to allw me to use a Ballistic prop that hit the snout, and still use the snout.
 
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