Discussions (1289)

Folding or fixed props.?

busy home [deleted] says:

Carrie my Hustler , has a folding prop.fitted
I m not going to race her, but I like a quick boat,
She also has a two blade and a three blade.
The previous owner said fit the two blade as reversing was not a good point. Another mate said the same,
What do you think?
9:15AM, 8 October 2011 PDT (permalink)

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rothwell_neil says:

The old argument about 2 or 3 bladed props says that 2 blades vibrate more as they both cross the keel slipstream at the same time. Shouldn't be an issue as the prop is far enough away from the keel to ignore (I hope as I have a 2 blader), The other argument is that as larger diameter you get more prop walk in reverse with 2 blades. I don't know if folders cause any problem in reverse, didn't think so? But if you were to change from folder to fixed I would think the 3 blade was the way forward.
95 months ago (permalink)

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pjbharrison says:

Hi Ron
Friend with Hunter 26 had a 2 blade folding prop. Couldn't reverse it off berth in marina. Wouldn't reverse at all really so changed it to 3 blade fixed. Was a B to get off as it was very close to P bracket. Heated prop in the end and used 3 jaw pullers. 2 blade also vibrated a lot. Seemed like boat was going to shake apart at times. 3 blade now much smoother.
Would recommend the 3 blade.
95 months ago (permalink)

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Snoopy463 says:

I've heard of boats not able to go into reverse with folding props until you've been in forward as the blades won't flick out. On Snoopy i've had both two and three blade props, three blade caused a lot of drag, since changing to two blade shes been a lot better and not noticed much differance in reverse.
95 months ago (permalink)

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Super Snoopy 050 says:

If you want to be really picky, you could manually align a two blade prop vertically behind the keel to minimise drag. I know someone who has done that when racing!
95 months ago (permalink)

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Andrew Curry says:

If you are keeping the boat on a mooring i would go with the folding prop as the boat will be faster. If your in a marina the 2 blade prop might be the better choice.
95 months ago (permalink)

busy home [deleted] says:

andrew , im going to be on a swinging mooring as usual.
i think you are right, I will keep the folder on on this year.My Gibsea 33 had a two blade and ran rough.the three may slow a Hustler tooo much.
I seldom go into a marina ,and probably will get the knack to open it. The prop is a long way from the keel as you see
Thanks all .
95 months ago (permalink)

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craig48uk says:

Folding props tend to have a flatter pitch than a fixed two blade, to enable them to fold flat. This is what causes the lack of action in reverse, however I never had any issues with the 2 blade folding prop on our half ton Golden Shamrock and yearly took her through the Caledonian Canal with all it's locks.
The two Hustler 25.5's I raced in the past were a folder and a fixed 2 blade. As the one with the folder had a dicky Petter 6hp we never really used it, sailing on and off the pontoons, but she sailed faster than the fixed 2 blade, which I also raced on occassion. Obviously there were other variables between the boats and I never felt the difference was directly due to the prop.
If you're not predominantly racing or have a smaller engine, my own opinion would be to run the fixed 2 blade. If you do occassionally race, then perhaps you can mark on the shaft internally, so you can align the top blade behind the P bracket. You get a better rating that way too!
As the folder is already on there, try her as she is, if you need more oomph it's an easy change.
A three blade on this size of boat is pointless, unless she's going to be a motor boat!
95 months ago (permalink)

busy home [deleted] says:

Craig. Thanks..
Please tell me (and Niel) How do they sail.?
Fingers crossed.
95 months ago (permalink)

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craig48uk says:

They're excellent sea boats and take heavy weather well, a good choice moving up from the 24.
They built 2 rig variants, tall and standard. The standard ones were the ones I sailed and they were a bit sticky in light airs. There was one on the River Forth called Satsuma many years back with the tall rig.
One that I sailed had done the AZAB twice I believe, she was called Cherry Pye and is now based in Loch Leven. That's testament to her seagoing abilities.
From memory they were handicapped around the same as my Achilles 7 Metre, similar to the Sonata, GK24 etc, but a touch slower from memory.
I was offered one of the 2 I used to sail, but can't justify a second boat right now. If I was boatless money would have likely changed hands.
You've chosen a good boat!
95 months ago (permalink)

busy home [deleted] says:

Thank,s......
Very pleased, having never sailed one,and not noted one in Falmouth.
I dont suppose anything sails as well as an Achilles in light airs.
blowing into the sail makes goskar go.
95 months ago (permalink)

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