Propellor selection

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3 years ago

General

Kryspen

QLD

99 posts

Kryspen

QLD, 99 posts

5 Mar 2023 4:47pm

Still looking for replacement of my worn out folding prop.
As the cos6of folding prop is little out of my pocket I am looking at fix blade prop.
My question is; previous prop was 15 X 9 which is not available anymore ( Volvo Penta MD7B ), is the 14 X 11 give similar outcome as 15 X 9 or 15 X 11 be ok ?
All of them two blade props.

Craig66

NSW

2466 posts

Craig66

NSW, 2466 posts

5 Mar 2023 9:22pm

You could talk to the Tiger ??

Kryspen

QLD

99 posts

Kryspen

QLD, 99 posts

5 Mar 2023 9:40pm

The Tiger?

shaggybaxter

QLD

2678 posts

shaggybaxter

QLD, 2678 posts

5 Mar 2023 10:02pm

This sounds almost worth a punt Kryspen? There's two of them and the measurement on one looks like 15".

Sorry it's only a picture, I couldn't work out how to link it. You might have to search on Facebook for the ad/seller. The location says Gladstone, so at least it's in the same state!
cheers,
SB

Ramona

NSW

7756 posts

Ramona

NSW, 7756 posts

6 Mar 2023 8:25am

Kryspen said..
Still looking for replacement of my worn out folding prop.
As the cos6of folding prop is little out of my pocket I am looking at fix blade prop.
My question is; previous prop was 15 X 9 which is not available anymore ( Volvo Penta MD7B ), is the 14 X 11 give similar outcome as 15 X 9 or 15 X 11 be ok ?
All of them two blade props.

Your MD7B is probably driving a 1" shaft. I would be investigating something like this.

www.facebook.com/marketplace/item/507129728158812/?ref=saved&referral_code=null

It might be too much for a MD7B and rotate the wrong way but it would be my ideal propeller. I would not go from a folder to a fixed under any circumstance, What's wrong with your folder?

Kryspen

QLD

99 posts

Kryspen

QLD, 99 posts

6 Mar 2023 12:45pm

Teeth are worn out and not engage together

Kryspen

QLD

99 posts

Kryspen

QLD, 99 posts

6 Mar 2023 12:51pm

I have chat with Techni at the Volvo Penta about this.
Purchased 14 X 9 . He stated that 3 blade prop would require more engine power due to prop area. Quick on takeoff but not best for cruise.
He stated that 14 X 11 would be ok for cruise spead at less drag than 3 blade.
Cud also get folding prop but for the price of folding prop i cud get 2 fixed props.

Ramona

NSW

7756 posts

Ramona

NSW, 7756 posts

6 Mar 2023 5:45pm

Kryspen said..
Teeth are worn out and not engage together

Grind the teeth off.

MorningBird

NSW

2710 posts

MorningBird

NSW, 2710 posts

6 Mar 2023 7:10pm

I had a Gori 15 X 10 folding two blade prop on my S&S34 provided by Porters in Parramatta. It was the right prop for the boat. 1" shaft.

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