How to Replace an Aluminum Boat Prop
                     How to Replace an Aluminum Boat Prop 
 
If your aluminum boat prop is corroded, it may be time to replace it. There are several 
factors to consider when replacing an aluminum boat prop, including the rake, pitch, and 
balancing issues. Additionally, the hub will need to be examined to ensure that it's still 
in good shape. The good news is that this process is relatively simple.  
If you're not sure which material is best for your prop, try using a scrap piece of 
aluminum. For example, timing chain covers or aluminum heads work well as practice 
materials. Use thinner edges when practicing. You can also use a running bead or two to 
simulate an aluminum casting. When lit by a tig torch, these beads will resemble an 
aluminum casting. 
If you're not looking to spend a lot of money on a new boat prop, you can find a low-cost 
alternative at your local marine supply store. The Three Blade Hustler prop is a great 
choice for boaters looking for top end performance and excellent bow lifting. It's 
suitable for mid-range horsepower pontoons, fishing ribs, and tiller boats. It's also 
compatible with most outboards and gearcases.  
If you're ready to replace your boat propeller, make sure you follow the proper 
procedure. After sanding, wipe it with acetone to remove any residue and skin oils. You 
should wear gloves while doing the job, as oil and moisture can wreak havoc on a 
finished propeller. You should also protect the propeller from water.  
Aluminum boat propellers are relatively inexpensive, but stainless-steel ones start at 
around $350. Composite propellers are a better choice for higher -powered boats. They 
have the same top end performance as aluminum propellers, but cost 30% less. They can 
be used for the main boat propeller or a spare. Some boat manufacturers even install 
them. 
While stainless steel propellers have historically been preferred by boate rs, the 
aluminum boat prop has several advantages. It is cheaper, is less likely to be damaged, 
and offers excellent performance under most conditions. Moreover, it is much easier to 
replace an aluminum boat prop in most cases. Most dealers stock a wide range of 
aluminum propellers.  
When choosing an aluminum boat prop, consider the size, tooth, and overall design. 
There are wide bladed models that are ideal for pontoon boats, and four-bladed ones that 
improve hole-shot and trim on bass boats. These factors will all determine which 
propeller will work best for your boat and your budget.  
Propeller sizing and manufacturing has advanced over the past 20 years. New computer 
software and mathematical calculations are used to determine the appropriate size. 
Propellers can also be repaired if needed. Propellers with significant bends should not 
be adjusted by yourself, as it will damage the blades or driveline components.  
 
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