X-Prop for the Sierra/Cuda

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Jimchris

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Location
Washington State
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I've successfully fitted the blacktip X-Prop onto our two Sierras. All that is needed is the factory inner hub + Clutch plate, 3 1.25" #8 screws, an m5x25 screw, a stainless steel spacer, and basic hand tools.

NOTE: This will omit the factory mechanical clutch, I'm using the castle controller which has an electronic one.

I trimmed down the posts on the inner hub flush, then drilled through the remaining holes with the clutch plate mounted underneath. Next I removed the factory screws from the blacktip prop, and ran the 1.25" #8 screws through the blacktip hub, through the stock inner hub posts (believe it or not the holes line up) and into the clutch plate.

There is a gap between the motor shaft and the blacktip hub, I used a stack of stainless washers to fill in the void on the first one, used a stainless sleeve on the second one. The m5x25 screw holds the prop/hub assembly onto the motor shaft, be sure to use threadlocking compound on this screw.

After fitment, I applied a DA sanding pad to the shroud and turned the prop to eliminate any rubbing against the shroud.

I conducted a torture test at our local pool to debug any issues, only issue I found was I managed to overheat the controller, running at a 75% gear in 84 degree water probably didn't help. I cannot be certain of any thrust improvements, however it feels stronger, and it's certainly quieter and more balanced feeling than the factory prop. Definitely will move you through the water.
 

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https://www.shearwater.com/products/peregrine/

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