A prop-er question or 2

[Wigwambayboater]

I am trying to learn a few facts about prop repair. If a prop made from a nickel-aluminum-bronze alloy- became bent what are the steps to consider for repair? Second senario is a crack in one of the blades not into the hub. Would you weld or braze? How do you know when it is good as new? Template?

 

[steelespike]

Re: A prop-er question or 2

Props are typically stainless or aluminum.Welding is the repair of choice.Bronze props are rare on typical applications.And would be brazed.
Prop evaluation really needs to be done by a prop shop. How much blade is missing how badly stretched are the blades, degree and location of cracks would determine if a repair is possible.
The prop needs to be balanced and they use pitch blocks to get the blades true.

 

[Wigwambayboater]

Re: A prop-er question or 2

Props are typically stainless or aluminum.Welding is the repair of choice.Bronze props are rare on typical applications.And would be brazed.
Prop evaluation really needs to be done by a prop shop. How much blade is missing how badly stretched are the blades, degree and location of cracks would determine if a repair is possible.
The prop needs to be balanced and they use pitch blocks to get the blades true.

Thanks steelespike
Would arc-welding be an option? Would a repaired prop have any quality or performance issues?

 

[steelespike]

Re: A prop-er question or 2

I don't have personal experience but Arc welding would seem to me the only way.
I know they replace quite large chunks of aluminum props.Stainless is tougher material and I think a lot of straightenimng would go on with stainless.I would call the quality close to factory on prop repair.