Turning Point Props any good???

[doggypaddle]

title says it all really! will a turning point prop be any better than a yamaha K series?
I am running a 17 at the moment and would like to try a 19" the turning point prop is an alternative.
any horror stories or tales of unleashed performance

[Hightower]

Originally Posted by doggypaddle

title says it all really! will a turning point prop be any better than a yamaha K series?
I am running a 17 at the moment and would like to try a 19" the turning point prop is an alternative.
any horror stories or tales of unleashed performance

I did lots of back to back testing for my BWM and Yam 80 years ago with 15, 17, 19 K series and 16, 18, 19 SS props and I doubt you'll get a better prop than the 17 K series for your set-up. You might get some minor benefits, but at a sacrifice to other elements (better top end, slower holeshot etc). When coupled in with the fact that if you hit something with a stainless prop you are more likley to damage gearbox parts as opposed to the alloy prop, it just isn't worth the time and expense IMO.

[doggypaddle]

so you rekon i need a 19" K series then ?
the old tub is a bit slow with the 17" i only get 32 knots,
need to get a tacho really, but as nos and matt get up to 38 knots with a 90 and an 85 running 19", and Nos has run 21" on his 85, i think the 80 should just about pull 19". i did try a 19" plastic prop of Nos's but spent more time ventilating it than getting anywhere
didnt realise turning point were SS? thought SS would be 18, 20, 22" and alloy 17.19.21 etc.

[Hightower]

Well with my set-up I was getting about 35knotts WOT and more like 32 knotts cruising. But then again I recon the BWM to be heavier than a Searider, had a very different hull design and could explain the lower performance I got. But I was quite happy with my old Tub.

What's acceleration like with a 17"er? If she doesn't dig in too deep and holeshot is fairly good then there might be some more to come. Please remember that some different models of the same outboard sometimes have different ratio's of gearboxes. This would affect what prop you throw and you might not be able to make a direct comparison with some one elses set-up.

The other thing to bear in mind is that a 90 over an 80 has more than 10% more power available and might well have more than 10% torque too for the same sized boat. This might make all the difference when choosing a prop.

All I say is please borrow a prop instead of buying one, otherwise you could be very dissapointed/

[doggypaddle]

I know youre right, i should try one first, but no one seems to have one!
perhaps i can Persuade Nos to let me try his next time were out together
the boat seems to pickup fairly well, and liz thought it sounded like the engine was revving well on the 17" but i mus admit i didnt think it was revving much.
without a tacho its all speculation! i need to try a prop! i know where youre coming from with the 10% thing but the two matts had 85 and 90 and rekon there was hardly any difference, both pull 19 well. an 80 shouldnt be a lot different to an 85
i certainly dont want to buy one thats no good, i aint made of money

[Hightower]

If you have to choose a prop then you won't get a better alloy one than the K series one from Yamaha.

[doggypaddle]

i will keep my eyes open for one on fleabay! even if its overpropped with a 19 it will do as a get you home anyway

[Nos4r2]

Originally Posted by doggypaddle

i will keep my eyes open for one on fleabay! even if its overpropped with a 19 it will do as a get you home anyway

Seeing as you're asking nicely, next time we're out at the same time and it's calm you can try my 19"

[BruceB]

Originally Posted by Hightower

If you have to choose a prop then you won't get a better alloy one than the K series one from Yamaha.

I tried four different ss props of different sizes/types in comparison to a 17K yam prop on my last boat and all were no better or even worse performance.

[doggypaddle]

i am gonna try matts michegan wheel match, and if thet works better than the K17" i am gonna get a 19"K

[Hightower]

Well if you want to try Stainless I have a 17 Michegan Rapture that used to be on the 80 Yam I had. WOT was 4200 on my old boat, if your passing for a day in the Solent then stop by and try it out.

You never know, you might just buy it off me

[doggypaddle]

Thanks for the offer mate, but i really DONT want a stainless
with my boatmanship its better if something cheap is the weak link in the chain
The Michegan match is ally.........see below from their website.
also everyones recomendation seems to be the yam K series is the poodles privates for an OEM prop anyway.


"Michigan Match propellers are backed by Michigan Wheel's limited lifetime warranty.--High gloss black powder coat finish minimizes speed loss from drag and protects aluminum propeller."

[Hightower]

Originally Posted by doggypaddle

Thanks for the offer mate, but i really DONT want a stainless
with my boatmanship its better if something cheap is the weak link in the chain
The Michegan match is ally.........see below from their website.
also everyones recomendation seems to be the yam K series is the poodles privates for an OEM prop anyway.


"Michigan Match propellers are backed by Michigan Wheel's limited lifetime warranty.--High gloss black powder coat finish minimizes speed loss from drag and protects aluminum propeller."

Yes, I've used a Mich Match prop I bought back from the states and is just as good as the K prop.

However if you ever what to try the stainless one then you're more than welcome to borrow it. I think that Nos has a 17 Rapture, ask him what it's like on the Searider.

[Nos4r2]

Originally Posted by Hightower

I think that Nos has a 17 Rapture, ask him what it's like on the Searider.

Had one-sold it. It wasn't very good-max revs were too low and top speed dropped slightly.It'd probably suit a slippier hull better.The match is better on my Searider.
Holeshot was good though.