Stainless Prop on Suzuki 140

[Twoshottom]

I recently bought a Thunder Jet Luxor with the Suzuki 140 HP four stroke. :yay: I want to have a spare prop and am thinking of buying a stainless prop and keep the stock prop as the spare.

The boat is the 20' luxor, hard top with 140 and 9.9 suzuki's. Is anyone running a stainless prop on a similar boat? If so what pitch works well on your boat? Where did you get your prop?
Thanks for the help!

[FishFreak]

I guess I need some education.... I have basically the identical configuration on my Thunderjet...what's the advantage of the SS prop?

[ICHTHYDEMON]

I recently bought a Thunder Jet Luxor with the Suzuki 140 HP four stroke. :yay: I want to have a spare prop and am thinking of buying a stainless prop and keep the stock prop as the spare.

The boat is the 20' luxor, hard top with 140 and 9.9 suzuki's. Is anyone running a stainless prop on a similar boat? If so what pitch works well on your boat? Where did you get your prop?
Thanks for the help!



Its nearly impossible to pick a prop without knowing what RPMs you're running.

How many RPMs is the motor supposed to run? How many RPMs is the motor running with it loaded the way you'll usually be using it?

A litte more info is needed for a correct reccomendation.

[ICHTHYDEMON]

I guess I need some education.... I have basically the identical configuration on my Thunderjet...what's the advantage of the SS prop?



The biggest advantage is durability. A stainless prop is far more durable than an aluminum. With that comes the possibilty of damaging the lower unit with a hard strike.

If an aluminum prop whacks a rock it may ruin the prop,a stainless prop may survive,but the lower unit may take all the stress of the hit.

[FishFreak]

Given the fact that they cost soooooo much more than aluminum, and weigh more and may damage the lower unit in the case of a strike , I guess I don't understand the payoff of durability
They do look nice though

[foxer]

The other advantage is that the blades do not flex. You should get a bit more thrust.

[Twoshottom]

WOT per the manufacturer is between 5600 and 6200 RPM. I seem to be at the lower end of that range. I'm still getting use to the setup but 4400-4600 seems to run a comfortable 30 mph, plus or minus a couple mph. I'll pay closer attention tomorrow.

I hadn't thought too much about damaging the lower unit rather than the prop if/when I hit something floating in the Columbia. I understood there was a slight performance increase both out of the hole and top end and that the stainless was more difficult to damage.

Thanks for the help, :bowdown:looks like I need to put a little more thought into this.

[ICHTHYDEMON]

Trimmed out you should be running near 6K RPMS. If not you need less pitch. What size prop are you running now?

[Twoshottom]

It's a 14" by 19 pitch. Trimmed out I bet I'm close to 6k. Still getting the feel for everything in this boat.

[D-tangle]

I have a 15 pitch prop, 3 blade and my motor tops out at 5300 RPM (Older Merc 150). With this pitch my 19' fiberglass boat gets up quickly pulling a water tube with kids and I only lose 2-3 MPH. I love it. Lots better than the 21 pitch the rig came with. Hope this helps.

[nokaoiken]

Had a 19 pitch on my zuk 140 and it was slow coming out of the hole and it was not running at recommended RPMs. I bought new 17 stainless prop and it was great. I did not care about top speed either as there is usually alot of debris in water and I'm afraid of ripping off lower unit.
I have since, sold boat but kept stainless prop(Attwood #335531 13 1/2 X17. Prop fit 97 Suzuki 2 stroke motor.

[Tall-tailer]

Check out your wot rpm's and if your not getting to your 6200 than drop down one size, each step up or down changes your rpm's approx 150. so from a 19 to a 17 would raise your rpm's approx. 300. or from 19 to 21 lowers your rpm's 300. Trade off is hole shot is better with a lower pitch prop. Top speed is better with a higher pitch prop. If you think you want to try a 14x17 pitch aluminum prop for your motor drop me a PM.

[crabbait]

It's a 14" by 19 pitch. Trimmed out I bet I'm close to 6k. Still getting the feel for everything in this boat.



I had a Suzuki 140hp with the stainless prop on my 23' Edwing (traded up to a 225hp Honda). With the stock prop, 19 pitch, I could only get about 5000rpm. With the stainless, also 19pitch, I picked up about 300-400rpm. The increase in performance I would call "significant".

Modern stainless props come with a sacrificial inner sleeve, designed to spin if you hit something solid enough. The sleeve takes the damage.

[Twoshottom]

Thanks for all the advice. I had decided that maybe I should stick with the aluminum prop but crabbait has got me thinking I should try the stainless.

Crabbait - With the 19 pitch stainless prop is the diameter still 14"? You don't happen to still have the prop?

Tall-tailer & nokaoiken - Thanks for the offer but I think I'll stick with the 19 pitch. I think the performance is pretty good on my boat. Saturday morning we had some calm water and with 3 adults and one kid, trimmed up we hit 6,000 to 6,100 rpm WOT.

[ICHTHYDEMON]

Saturday morning we had some calm water and with 3 adults and one kid, trimmed up we hit 6,000 to 6,100 rpm WOT.




If thats your normal load,the RPMs are right where they should be. If you normally fish with less weight you'll probably be turning too many RPMs.

I should have also mentioned I run a stainless prop. I wasn't trying to steer you away from stainless,just letting you know what may happen.

[crabbait]

Crabbait - With the 19 pitch stainless prop is the diameter still 14"? You don't happen to still have the prop?




The only difference between it and stock was the material (ss). I sold it separately (on ifish) two months ago.

[marys netter]

By the way the rubber sleeves in stainless or aluminum props are designed to slip under trauma from non-water objects,however real world physics prove otherwise, think about it; 3 to 5 thou. rpm being able to stop in a couple of milliseconds, not happening same goes for the hydralic relieve circuits in I/O drines. SS props are fantastic but ya plunks yer money and take yer chances!!

[Bluto]

In some of the larger HP outboars, SS is the only option available... The Suzi 225 swings a 16" SS prop, costs about $450 :smash: and there isn't an option for an aly prop.