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Old 12-26-2007, 10:19 AM
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Default prop rake

do props have a standard rake i tried my first rolla the other day but the bow seems to be running very low
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Old 12-26-2007, 10:48 AM
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You may need more rake or cup. They all have different designs for various results. What kind of boat and power......
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Old 12-26-2007, 06:25 PM
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its a 26ft fletcher with a 440hp yanmar diesel and 2 speed gearbox prop shaft angle is about 2.2 ton all in but take a look at my thread PROP PROBLEM and let me know what you think

cheers gerry
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Old 12-26-2007, 07:24 PM
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it could be a low rake cleaver . you can get one in a high rake that will lift the bow . a low rake lifs the stearn robbie
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Old 12-27-2007, 02:19 AM
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cheers buddy

what is generally the best stern or bow lift my boat has very little weight up front i completely gutted it out last year
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Old 12-27-2007, 07:38 AM
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its a 26ft fletcher with a 440hp yanmar diesel and 2 speed gearbox prop shaft angle is about 2.2 ton all in but take a look at my thread PROP PROBLEM and let me know what you think

cheers gerry
Are you running the prop completely submerged?
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Old 12-27-2007, 12:46 PM
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no its running half out of the water the centre of the hub is level with the bottom of the hull
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Old 01-04-2008, 02:03 PM
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no its running half out of the water the centre of the hub is level with the bottom of the hull
Okay.... so you have a bow lift problem. It could be either lack of rake, not enough blade area/diameter,prop type (cleaver, round ear, etc) or a cup issue...or a bit of all.

My advice is contact Rolla and see what he suggests......... or if you borrowed the prop....... borrow a few more for comparison.

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Old 01-04-2008, 06:10 PM
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i guess my problems are only starting then
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