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#1
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whoops... double post
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#2
02-22-2012, 09:16 PM
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its my sons boat and i think he said 34mph,but he did tell me that when its about 3/4 of the way down the throttle and puts it all the way down he sees no differance in the speed. its a white prop that came with the boat, probably not a very good one but an all around prop, and it tachs out at 6400rpms, to high
__________________
love to fish
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#3
02-22-2012, 09:35 PM
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I'm betting that the tach is reading wrong.
__________________
*************************************** Stay Safe!  Sold - 1984 V-20 Cuddy with a 2003 Johnson 140 hp gas sippin 4-stroke. 1995 Ranger 250C with a 2015 Suzuki 300 hp 4-stroke.
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#4
02-22-2012, 10:48 PM
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steelspike on iboats posted: "A 19" prop at 6300 makes about 50mph.@ 6% slip.
As I'm sure you have figured, not likely. I suspect the tach." I agree with him... I posted your last comment just now. I suggest checking out the tach.... maybe obtain another for testing purposes.
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#5
02-24-2012, 09:24 PM
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so what im hereing is that the prop is the correct size and its the tack thats giving wrong reading, well i will serently look into that and i will get back to you and let you know what the outcome is thanks for all the help
this problem will get correccted for sure
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love to fish
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#6
02-24-2012, 09:31 PM
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we are not certain of anything yet but we feel that the logical next step is to verify rpm and gps speed.
My calculations came up with a lower pitch prop but that would raise rpm's..... The only thing we can say for sure is that your stated rpm, speed, pitch, and engine do not match up.... there's a skunk in there somewhere and we need to find him. THEN we can recommend a prop for ya.
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#7
02-24-2012, 09:32 PM
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we are not certain of anything yet but we feel that the logical next step is to verify rpm and gps speed.
My calculations came up with a lower pitch prop but that would raise rpm's..... The only thing we can say for sure is that your stated rpm, speed, pitch, and engine do not match up.... there's a skunk in there somewhere and we need to find him. THEN we can recommend a prop for ya.
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#8
03-22-2012, 10:00 AM
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I did the exact thing you are considering on my 18 and did not like it. I had a new 4 blade stainless given to me. I lost about 6mph top end with a little better whole shot. It went in the bow for a spare and my 3 blade Stilletto went back on the motor.
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Really, who ISNT better looking than Charlie?
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