If the propeller description said "13 1/2 x 17" what does the 13 1/2 mean? Im pretty sure the 17 is the pitch, but i havnt a clue about the first number. I have a 1975-1980ish 140hp evinrude, and dont know what propeller to get for it. it is a 15 spline though.
2007-02-25 11:06:52 · 6 answers · asked by Jacob 1 in Cars & Transportation ➔ Boats & Boating
the serial number is:
J0005872
the model number is: 1407435
operating range is 4500-5500 rpms.
thats what the tag on transom says about the motor.
2007-02-26 08:00:20 · update #1
....The boat is a 16ft ski/fishing boat (1979). It has a tri hull. I need to know how to get a prop that is long enough to butt up against the "exaust" part of the lower unit. Im not sure what thats called, but the last prop i got on ebay was not long enough. It was short about 3-4 inches, but it still fit on the shaft. How do i get one that fits that too?
2007-02-27 04:00:25 · update #2
"What propeller to get for it" is a serious question. May I ask what is wrong with that'n. To get the most out of your motor, you must run a slip calculation. If this is not possible, give me the model # or serial # of the motor. It's located starboard side of transom bracket on a ID plate. This will give me the year so's I can get the gear ratio and go from there. A description of your boat would help me make a educated guess. The right prop does matter! Like I said, a slip calculation is a must for the perfect prop. Let me know what you want to do.............The 15 tooth spline is the low gear gear case. It's designed to accommodate a large dia prop. Depending on your size of boat, which you failed to mention, I would have to say that a 14.25 X 17 thru 15 X 17 would be your best bet. Now if you have a bass boat, the 13.5 dia.would be the correct choise, but the 17 pitch would leave lot's to be desired hence that pitch is for standard applications. That's a 1977 by the way. How big is your boat ?......................What you are describing is the length of the barrel.wrong thrust washer or just the wrong prop. If it were mine I would put a UN200PTC3R17S-3 with the UN087 thrust washer on there. But being you are the E bay shopper, I would suggest crossing over the #'s that I have described, for a more affordable application. That be a 14.25 X 17 for a 4.75 gear case. Glad to help. Good luck.
2007-02-25 13:57:05 · answer #1 · answered by Anonymous · 1⤊ 0⤋
It's the previous owners phone number.
2007-03-04 11:00:41 · answer #2 · answered by Anonymous · 0⤊ 0⤋
13 1/2 is the diameter, 17 is the pitch. More pitch gives you more speed (if the engine can pull it) and less gives you more power.
2007-02-25 11:17:17 · answer #3 · answered by mark t 7 · 0⤊ 0⤋
the first # is the diameter. the 2nd # is the distance the prop will travel in one revolution...all measured in inches.
2007-02-25 23:16:54 · answer #4 · answered by Anonymous · 0⤊ 0⤋
http://sites.mercurymarine.com/portal/page?_pageid=126,53050,126_53052&_dad=portal&_schema=PORTAL
This is the Mercury Prop Selector site. You should be able to get all the info you need here.
2007-02-27 01:37:18 · answer #5 · answered by Wally T 3 · 0⤊ 1⤋
check this website. Tells all.
http://www.rundquist.com/how_prop_works.htm
2007-02-25 11:12:51 · answer #6 · answered by I drive fire trucks 3 · 0⤊ 0⤋