Propellers

Props, and Tartan/Sov Marine build differences - click here to add to this discussion RE: Props, and Tartan/Sov Marine build differences

Summary

Builder
Standard Martec Prop.
Soverel
with 1GM10 Yanmars had 2.67 gears
13d x 11p
Soverel
with 1GM10 Yanmars had 3.22 gears
14d x 14p
Tartan
12d x 10p
Pacific
 
Republic
 

From: Ian Duff, Invisible Cities Date: Thur., 27 June 2002
Subject: Props, and Tartan/Sov Marine build differences

Well, in the (belated) process of getting Invisible Cities in the water, I discovered a significant crack at the root of one of the blades of the Martec prop. Damn. Off it came, and got UPSed to Martec, in Long Beach. They just got it, and left a message at my house. I got the message, and phoned them. Imagine how astonished I was when the lady (Mary) that answered the phone a) knew who I was as soon as I identified myself, then, b) upon asking what kind of boat this prop went on, asked me if my Soverel was a Soverel-built one, or a Tartan-built one! She knew I'm on the east coast, so Pacific or Republic were unlikely. Wow! From the lady answering the phone! Then she went on to observe that the Tartan boats had a shorter shaft strut, and subsequently a smaller dia. prop. Soverels had 13d x 11p, Tartans had 12d x 10p. My Tartan boat had a 13x11, and missed the Yanmar's peak output by at least 400 RPM. Guess I know why now. They're replacing both blades (they only do pairs), and shipping it back to me quickly enough to meet my schedule, for half the price of a new prop, plus shipping. Now THAT'S what I call customer service! Now, to figure out how to keep the weeds and barnacles at bay on (or off) my new prop blades.


From: Randy Richter, Pressure Drop Date: Fri. 28 June 2002
Subject: RE: Props, and Tartan/Sov Marine build differences

Last year I had my prop redone by Martec and they are indeed on the ball! However, my Soverel built boat has a 14x14 prop. I suspect the difference is that some of the 1GM10 Yanmars had 2.67 gears and some had 3.22. The 2.67 probably had 10 or 11p and 3.22 had 14p (or at least that is what is on my boat). Diameter does not appear on my boat to be limited by clearance so again I suspect if you have the high gear (2.67) the tip speed of a 14d prop would be too great and the prop would cavitate. My mechanic has checked the peak RPM of the engine with the 14x14 and it is correct.


Note:
To Add to this discussion, send an e-mail with RE: Props, and Tartan/Sov Marine build differences in the Subject to the Discussion Group or the Webmaster.

- example

From: your e-mail address
To: Soverel33@yahoogroups.com
Cc:
Subject: RE: Props, and Tartan/Sov Marine build differences

top100