prop sizing

[n.b.Goldie]

Me too, at least that's what I was told. 1" pitch equivalent to 2" diameter.

Casp'

 

Interesting, I too find prop-sizes most confusing.

 

I am told that the ideal prop size for my engine is a 17x10 but I have a 16x11 fitted.

 

Does 1" pitch equivalent to 2" diameter mean a 16x11 is equivalent to an 18x10 or have I got the wrong end of the stick?

 

Does the above mean that my engine (Lister LPWS3) is over-propped with a 16x11?

 

My head hurts................

 

Ditchdabbler

[casper ghost]

Does 1" pitch equivalent to 2" diameter mean a 16x11 is equivalent to an 18x10 or have I got the wrong end of the stick?

 

Ditchdabbler

Yes, that's what I was told. I needed a 22x16 but ended up with an 18x19, which is roughly the same size.

Casp'

[Chris-B]

Interesting, I too find prop-sizes most confusing.

 

I am told that the ideal prop size for my engine is a 17x10 but I have a 16x11 fitted.

 

Does 1" pitch equivalent to 2" diameter mean a 16x11 is equivalent to an 18x10 or have I got the wrong end of the stick?

 

Does the above mean that my engine (Lister LPWS3) is over-propped with a 16x11?

 

My head hurts................

 

Ditchdabbler

16 x 11 is the correct blad for a LPWS3 with a 2:1 reduction

Chris

 

 

 

[n.b.Goldie]

16 x 11 is the correct blad for a LPWS3 with a 2:1 reduction

Chris

 

 

 

 

Thanks Chris, perhaps I should have asked you first!

 

Ditchdabbler

[Chris-B]

Thanks Chris, perhaps I should have asked you first!

 

Ditchdabbler

 

but someone would only disagree !!

oh sorry wrong thread