Stainless props

[fish_on]

so do these really make a difference. thinking of changing over but is is really worth it. ive got a 420 edgetracker with a 50 on the back. i heard stainless produces more power. anyone ever changed over and noticed a difference

[Blackened]

G'day

Stainless will nt produce more power.

It will more efficiently deliver the power to the water than an alloy prop because the alloy will tend to flex, especially under higher horsepower usage.

If you're doing alot of shallow water running and you do hit the odd obstuction, stay with the alloy as a stainless will eventually damage your gearcase if it took too big of a hit.

Dave

[blu]

there gr8 if you want to keep the same boat and or donk cause they outlast alloy 10fold but if you are the type to get a different boat/motor every few years stay with alloy prop as S/S props are $$$$$$$

[trueblue]

Power comes from the gee gees... not stainless

SS just lasts longer, and tend to be better for slight modifications. Lots of bucks though - got to really want them for a particular reason.

Cheers

Mick

[fish_on]

thanks boys. i can get em cheap thats all prob still not worth it by the sounds of it. cheers

[trueblue]

Where can you get them cheap? What brand, and how cheap?

[Coontakinta]

Where can you get them cheap? What brand, and how cheap?

My sentiments exactly!

Care to tell, and can we all get on this one?

[Tinn]

Cheap stainless props. The words don't go together. You want the best you need the best budget $$$$$$$$

[peterreb]

If any, S/S props will consume horsepower to run, ie heavier the prop, the more hp needed to turn it. I was told my 140hp with S/S prop will need extra 300rpm from the motor to run? It makes sence though extra weigh, more hp.
Peter

[Astro]

If any, S/S props will consume horsepower to run, ie heavier the prop, the more hp needed to turn it. I was told my 140hp with S/S prop will need extra 300rpm from the motor to run? It makes sence though extra weigh, more hp.
Peter

Yeah that sounds about right, it would create more lag while building fromt idle to the lower rpm range thus needing a little bit more revs to get the boat up to speed (more likely with a 4 fin ss prop) but once the prop is at a certain speed you would imagine there wouldnt be any difference between alloy and ss, i dont think you would notice the difference.

[trueblue]

Yeah that sounds about right, it would create more lag while building fromt idle to the lower rpm range thus needing a little bit more revs to get the boat up to speed (more likely with a 4 fin ss prop) but once the prop is at a certain speed you would imagine there wouldnt be any difference between alloy and ss, i dont think you would notice the difference.

Nah mate - 4 bladers literally launch the boat out of the water. Same revs, more punch due to the torque delivered direct to the water. Nobody will ever really understand the difference till they do water tests with a 3 blade (Stainless) and then with a 4 blade (Stainless) of the same pitch in the same water conditions with same boat loading.

[Noelm]

A lot of not so acurate info here! a Stainless prop does NOT need more power to turn it, and in fact if you where to put the same size SS prop on the same motor that had an Alloy one it will INCREASE RPM, for a few reasons, but the main one being that SS can be made a lot thinner (and less flex) as a "general" rule if you have an Alloy prop of X size you can go to the next size up and achieve same RPMs (sort of) and if you do a straight out swap you will notice a difference (providing the boat was propped correctly in the first place)

[Kerry]

Stainless is far more efficient than alloy. Comparable props same dia/pitch weight has absolutely nothing to do with it but the thickness of the blades do. Alloy requires thicker blades, like cutting butter with the side of a knife, makes a hard job of it.

Also a alloy prop will flex as well which is a waste of energy.

[FNQCairns]

I bought not long ago a stainless prop for my boat, I have not seen or heard of another boat the same as mine yet so had to guess what would most likely suit, I went with 13 1/4 d x 17p. If I was to consider the same prop in alum (identical brand) I may need to drop either the pitch to 16 or the diameter to 13 in an effort to match the stainless.

So hopefully with the 17p and stainless I get a bit better economy and even a couple of kph better cruise and top end.

Hope that makes sense.

cheers fnq

[Noelm]

hey Kerry and FNQ, is'nt that what I said?? still beter to get a few similar opinions huh!