Prop for SX22

[Khammer]

I recently bought a 2022 SX22 with a 115hp Yamaha.
Previous owner had a 13 5/8 x 13 K prop and said that I wouldn’t pull tubers well. He switched to a 13 1/2 x 14 K which he said was much better.

It does have a great hole shot, but rpm’s are too high. If you aren’t careful rpm’s hit 7000 pulling a tube or skier.

Appreciate suggestions!

 

[Jack M]

Check with Ken at propgods.com.
Other members will respond as well , but it is a summer weekend so it may take a while .
You can also search in the upper right corner.

 

[Vikingstaff]

I recently bought a 2022 SX22 with a 115hp Yamaha.
Previous owner had a 13 5/8 x 13 K prop and said that I wouldn’t pull tubers well. He switched to a 13 1/2 x 14 K which he said was much better.

It does have a great hole shot, but rpm’s are too high. If you aren’t careful rpm’s hit 7000 pulling a tube or skier.

Appreciate suggestions!

First, that motor maxes at 6300 RPM’s I think…so way over-reving. Second, a K prop is a basic one and not really well suited for pontoon boats IMHO. Not a prop I would personally recommend for a pontoon myself.

What are you after? Maximum performance out of the boat with the 115HP? Also, is it a bi-toon or tritoon?

So, I personally, would be looking at BOTH changing the prop type AND increasing pitch. On the surface with your current prop you could go up about + 3-4 in pitch. However, I also wouldn’t stick with a K Prop. So in changing to a better prop for a pontoon, that pitch size recommendation may change.

I provide all of this to tease some thought on your part. As Jack recommended, Ken at Propgods can get specific real fast for you based on what you are trying to achieve with your boat and motor: slow cruise efficiency? Hole shot? Speed at WOT? Balanced performance? Different prop makes/models nudge in different directions.

 

[Khammer]

First, that motor maxes at 6300 RPM’s I think…so way over-reving. Second, a K prop is a basic one and not really well suited for pontoon boats IMHO. Not a prop I would personally recommend for a pontoon myself.

What are you after? Maximum performance out of the boat with the 115HP? Also, is it a bi-toon or tritoon?

So, I personally, would be looking at BOTH changing the prop type AND increasing pitch. On the surface with your current prop you could go up about + 3-4 in pitch. However, I also wouldn’t stick with a K Prop. So in changing to a better prop for a pontoon, that pitch size recommendation may change.

I provide all of this to tease some thought on your part. As Jack recommended, Ken at Propgods can get specific real fast for you based on what you are trying to achieve with your boat and motor: slow cruise efficiency? Hole shot? Speed at WOT? Balanced performance? Different prop makes/models nudge in different directions.

It is a bi-toon.
In regards to performance, just looking for a prop that will pull tubers. Most of the time we are going slow sightseeing.

Not sure what K type means, or the pros and cons ins of other types.

Thanks for your reply

 

[Fishwater2002]

We have a 2018 SX22 two tubes with the 115 SHO & stock prop. It’s a total dog with more than a few people onboard & tubing was so slow it was terrible so we don’t tube anymore. These boats are not performance boats, with a full boat of 10-12 people we’re lucky to hit 20 mph, they were built for a slow relaxing cruise around the lake.

You could try to change your prop but just remember what these boats were built for so you don’t get your hopes up too much IMO.

 

[PartyBarge]

It is a bi-toon.
In regards to performance, just looking for a prop that will pull tubers. Most of the time we are going slow sightseeing.

Not sure what K type means, or the pros and cons ins of other types.

Thanks for your reply

"K" prop generally refers to the most basic Yamaha prop, it's actually a hub size. That said, you may be wasting too much HP just beating up the water (aka high slippage with a base-line prop). Your satisfaction is likely to increase with a prop specifically recommended for a pontoon drag profile (that is also similar a V-hulled center console). There are props in the Yamaha line for that, maybe a Talon or Reliance. I switched to Quicksilver Nemesis (Merc Spitfire clone) and cured my slippage problem (it is a four blade and you might consider that for your use too). You'll need a hub adapter for those.

There are other sources like Turning Point specifically for Yamahas...and the list goes on. You may decide to stay with aluminum versus stainless steel to reduce cost and offer some protection for your motor (neither may be factors for you). With the level of slippage you are likely getting, you may not need to increase pitch very much to improve performance AND control RPM. Without knowing more about your specific needs, give strong consideration to an aluminum four-blade listed for pontoon use.

 

[fitz73222]

I'm running a 4 blade Turning Point 13.5 X 15 pitch aluminum on a 2 log 2021 21S with a 115 SHO Yamaha, 2 people, top stowed, full fuel, 29 mph @5800. Cruise with 4 people, full fuel, coolers, weight towards the rear, top deployed, 23 mph @ 4600 (not wide open, just cruise)