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Old 17 January 2010, 09:03   #11
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on bigger engines we found they flex slightly (less pitch) on smaller engine they seem ok, i've got one here from a 55hp suzuki i think
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Old 17 January 2010, 09:57   #12
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50 s

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on bigger engines we found they flex slightly (less pitch) on smaller engine they seem ok, i've got one here from a 55hp suzuki i think
Mines on two 50 hp Hondas.
I have not tried any other blades but I may well some time in the future.

But to replace both of them may cost a few pounds just to find out there in little or no difference .

With both engines going I get 30 knots. with 2 persons onboard.

Can't see me getting much more than that.
But who knows???
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Old 17 January 2010, 10:01   #13
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I've got a plastic prop as an emergency spare too. I lent it to Doggypaddle to try and he says it's absolutely appalling.It'll stay as an emergency spare simply because it comes apart and stows in bits quite easily.
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Old 19 January 2010, 07:26   #14
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new prop delivered in a paddy bag..

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I've got a plastic prop as an emergency spare too. I lent it to Doggypaddle to try and he says it's absolutely appalling.It'll stay as an emergency spare simply because it comes apart and stows in bits quite easily.

Well reading the replies from the forum members seems to me some think there o.k. while Others think there Rubbish.

Maybe i will be able to afford to change them this year.
And then I will know if there any better but in the meanwhile 15. ish for a new blade will have to do for now.

Thanks everybody for your input..
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Old 19 January 2010, 19:04   #15
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I had one of these supplied for a test for a boat fishing mag but it must be 15years or so back. It was a while cos we were using decca not gps.
It was absolutely crap so the mag, in the way that some do, never printed the test which would have upset the advertiser a tad! The prop was for a 40hp mariner and it came with a couple of pitches. One as per the one fitted to the boat already the other blades were plus 2 inches on pitch ( because the prop was so efficient - ) . With the original pitch replacement the motor revved its nuts off at wot. With the higher pitch it was a slug to get on the plane and the wot revs were in excess of those we used to get with the ali prop but the speed was considerably reduced. My conclusion was that the blades were flexing under load, and my opinion was unprintable. BUT could be handy to keep in the boat as a get ya home spare as its light and packs away.
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Old 20 January 2010, 06:57   #16
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Originally Posted by Nos4r2 View Post
I've got a plastic prop as an emergency spare too. I lent it to Doggypaddle to try and he says it's absolutely appalling.It'll stay as an emergency spare simply because it comes apart and stows in bits quite easily.
It certainly was with my setup. i got 36knots with a yam K 17" series at about 5600rpm and now run a 19" K and get same speed at less RPM.
with the plastic prop also 19" it maxxed out at 27 is knots and took a mile to get there.
Superb for a lightweight easily stowable spare though. but as others mention apalling compared to a good SS prop and mediocre at best compared to an average Ali prop.
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Old 20 January 2010, 07:17   #17
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two props

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Originally Posted by wavelength View Post
I had one of these supplied for a test for a boat fishing mag but it must be 15years or so back. It was a while cos we were using decca not gps.
It was absolutely crap so the mag, in the way that some do, never printed the test which would have upset the advertiser a tad! The prop was for a 40hp mariner and it came with a couple of pitches. One as per the one fitted to the boat already the other blades were plus 2 inches on pitch ( because the prop was so efficient - ) . With the original pitch replacement the motor revved its nuts off at wot. With the higher pitch it was a slug to get on the plane and the wot revs were in excess of those we used to get with the ali prop but the speed was considerably reduced. My conclusion was that the blades were flexing under load, and my opinion was unprintable. BUT could be handy to keep in the boat as a get ya home spare as its light and packs away.

My 5.6 adventure 1998 with twin Honda 50 hp Engines 96 ltrs fuel 2 batteries and some other stuff approx 25 kgs Two onboard 30 knots with the plastic props.

I don't know if I would get any more out of it with any other props.??
Anybody think I may get a little more speed ??
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Old 20 January 2010, 07:32   #18
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My 5.6 adventure 1998 with twin Honda 50 hp Engines 96 ltrs fuel 2 batteries and some other stuff approx 25 kgs Two onboard 30 knots with the plastic props.

I don't know if I would get any more out of it with any other props.??
Anybody think I may get a little more speed ??
Got to be worth a try. Do you know anyone who could lend yo a pair?
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Old 20 January 2010, 13:27   #19
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Lend a pair

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Got to be worth a try. Do you know anyone who could lend yo a pair?
Nope.

I ended up buying 3 props when I had another boat just to find out the best prop for the boat.
Two of then nonreturnable.
They went to the well known auction site. Well lost out there.

Parana props do a try it first Again Plastic.

I will leave it now till the summer and then take a look at it.
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