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Help with prop to Chris Craft 260 Stinger

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Old 07-06-2020, 11:42 AM
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Originally Posted by resurrected
Can do some trimming on that
how much? Thank you
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Old 07-06-2020, 12:56 PM
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I don't have any real world experience with any external pickups, but as per instructions on mine: flush on the leading edge and down 12.7mm at the back
transom_pick-up.pdf
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Last edited by resurrected; 07-06-2020 at 12:59 PM. Reason: forgot the decimal point!
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Old 07-06-2020, 09:11 PM
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Your propshaft height is WAY high for regular V Bottom. You want to be 3-4 inches below the bottom. My Pantera was at 3.25 below and I spaced it another inch lower.
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Old 07-07-2020, 01:32 AM
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Originally Posted by Griff
Your propshaft height is WAY high for regular V Bottom. You want to be 3-4 inches below the bottom. My Pantera was at 3.25 below and I spaced it another inch lower.
Thank you. A bravo one standard lower will get me to 3,7” below bottom.

Does the extentionbox help something with my high propshaft height?
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Old 07-07-2020, 11:21 AM
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Originally Posted by JohanSweden
Thank you. A bravo one standard lower will get me to 3,7” below bottom.

Does the extentionbox help something with my high propshaft height?
The extension box does allow you run about an inch higher, so at 3.7" below you should be good.
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Old 07-07-2020, 11:37 AM
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Originally Posted by Griff
The extension box does allow you run about an inch higher, so at 3.7" below you should be good.
Maybe the bravo one standard lower is the best option for my boat then..

Im going to try it if I see any improvements/changes with the spacer installed
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Old 07-08-2020, 01:45 AM
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Originally Posted by JohanSweden
Maybe the bravo one standard lower is the best option for my boat then..

Im going to try it if I see any improvements/changes with the spacer installed
I bet you will see a very slight improvement with the spacer.
I would think the standard lower should work well.
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Old 07-08-2020, 05:14 AM
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Originally Posted by Griff
I bet you will see a very slight improvement with the spacer.
I would think the standard lower should work well.
I am worried about that yes...


I tried to count the gear ratio today.
If i spin the engine 1 turn, the propeller spins about 3/4 turn.

what is the gear ratio?
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Old 07-08-2020, 06:14 AM
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You should spin the input shaft 10 turns and have someone count the prop shaft rotations. That will give you a more accurate ratio
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Old 07-08-2020, 08:47 AM
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Originally Posted by resurrected
You should spin the input shaft 10 turns and have someone count the prop shaft rotations. That will give you a more accurate ratio
Thank you. One guy told me it is 1,5:1 if I spin the motor 1 turn and the prop turns 3/4.


I also trimmed my water pickup down today.


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