Propeller size and shaft deminsion

[Bev & Billy on Sta-sea-dawn]

Hey...I just hit a rock in Bayport Fl. and I need to repair or by a prop.  I do not have it hauled yet.  I think it is a 17/12 LH 1 1/8 3 blade.  Does that shaft size sound right for a 365 ketch with a Westerbeke 40 with a v-drive?

[S/V Deo Volente]

Others will probably be more help, but here is a link to another prop size discussion. I would think getting a rock to hit the prop would take some effort.
http://www.pearson365.com/forum/index.php?topic=434.0
Mine is slightly different than the Ketch

[Dale Tanski]

The shaft size is indeed 1 1/8".

Dale

[Bev & Billy on Sta-sea-dawn]

Indeed...it takes more than your average sailor to motor over a rock...Bayport is very shallow...I mis \read my GPS...I did not trust it...and I should have....but the rock patches are over sandy bottom.  Since my prop is about a foot above the keel...at 3 to 4 knots motoring...I bounce right over the out croping and when the boat settled...the prop made this awful noise....I wish I had been under sail....

[barrylab]

I have a MaxProp 17"  1 1/8" shaft  3 blade classic set to 12"  left hand pitch, and it seems perfect for the W40. Full throttle gives me about 6 1/2 knots with 2400 RPM.

[POG]

Shaft is 1 1/8".  Correct prop 3 bladed is 17x 12 LH.  My prop is 17x12 and works great.  Let us hope you don't have gear box or V-drive damage if the prop was turning when it hit.

[Bev & Billy on Sta-sea-dawn]

How would I be able to tell if the v-drive or gear box damage?

[POG]

Noise, slippage, oil leak(s), overheating, wobbly shafts for example.  On the other hand "don't fix what ain't broke".

[Bev & Billy on Sta-sea-dawn]

Thanks...I will get in my look..listen and feel mode

[Dale Tanski]

Carl,

Let me know if you ever go into aircraft maintenance cause I will stop flying.  Speaking of broken, how are you doing on your issues?  Are you back to the boat yet?

Dale

[Bev & Billy on Sta-sea-dawn]

I got the prop off with out hauling the boat...I am so confused....It is supposed to be a 17/12 LH..1 1/8...When I get it to the shop tomorow i will find out what it truly is....It is stamped...17 R 10...1 1/4..with a sleve to reduce to 1 1/8 ....that seems to be imposible with a westerbeke 40, paragon tranny and the walter v-drive......So, I am going to have them redo the prop...try to get a 17-12 out of it and what ever hand it is now.....

[RayNWanda]

Nothing wrong with an "R" prop. That just means you need to reverse to go forward...

Put the prop on a bench with the back side of it (thrust side) facing you. If the top blade moves right to go forward, it is a right hand prop. If it moves left, it is a left hand prop.

[Bev & Billy on Sta-sea-dawn]

thank you.....

[Bev & Billy on Sta-sea-dawn]

I took my prop to the rehab shop and it is a right hand.....I had to replace my pedestal with an edson a while back and my shifting cable is on the left side.  It pulls back to an indent notch and remains in gear...forward.  It pushes forward and has to be held in reverse.  If I change to a LH prop wouldn't that change my shifter positions.  The holding indent would now be on the reverse gear and the forward gear would have t be held in gear?  How is my thinking flawed and why is my prop a right hand....while everyone else has a LH?

[Dale Tanski]

The stock configuration is left hand.  The prop shaft exits the hull on the starboard side of the rudder skeg.  This offset to starboard is designed to offset a LH prop walking to port as it rotates.  The propshaft offset and the prop walk is designed to counteract each other and the boat tracks straight under power.

Your boat must want to steer to port all of the time while in forward.  In reverse you would not get any swing of the stern to the right when you hit reverse.  I rely on the walk to the starboard side while docking as the boat sucks into the dock on the starboard side when in reverse.

Dale