It’s great to hear that someone else has had good experience with the Martec 
prop.  I’m happy with mine.  I will be sending it in for the first rebuild.  
I’ve owned the boat for 18 years and this is the first time it will be needed.  
Of course, in those 18 years I’ve only logged 800 hours of motoring…




Jake Brodersen

C&C 35 Mk-III “Midnight Mistress”

Hampton VA




From: CnC-List [] On Behalf Of Francois 
Rivard via CnC-List
Sent: Monday, February 19, 2018 14:34
Cc: Francois Rivard <>
Subject: Stus-List Help with folding prop insights?


Hi Bruce, 


I have a Martec folder on my boat (34+ also called 34/36) which is your boat's 
little sister.  


We've been using it for 3 seasons and it's world of difference in sailing speed 
compared to a fixed 3 blades.  It's measurably better in all conditions.  


What you need to get it going:  


- Martec is a phone call away and they are helpful the founder / inventor's son 
is probably going to be the guy you talk to.  He's pretty knowledgeable. 


- When I did it a couple years back, sending the blade axis to get reamed / new 
pin / new Monel cotter pin was $80.00 plus shipping.  A steal.


- The Monel cotter pin is an absolute must.  I would not trust what came with 
the boat, order one.  Most people don't know the difference and think that 
Stainless can't corrode. It can and does under water, especially when in 
constant contact with dissimilar metals like a bronze prop. The stainless steal 
pin will fail overtime causing the whole thing to fall apart.  No such issues 
with Monel.  


- Don't let him try and talk you into "upgrading" the blades to more pitch.  We 
did / had tons of vibrations / ended up using the old blades which work much 


How it performs


- Forward top speed under power is the same as the 3 bladed prop


- If it's in good shape / with the right blades it doesn't vibrate that much


- Reverse is weak and takes patience to get the prop to reverse direction / re 
deploy both blades correctly.  Not much of an emergency brake


- You have to go in the engine compartment and look at the shaft position to 
make sure the prop is folded with blades horizontal for max speed when racing. 
If they are vertical the lower one will hang down / drag.  There should be a 
mark on the shaft.  I found that if I stop the engine with the transmission in 
gear, the prop is almost always lined-up properly


- The prop is known to be the least drag prop when folded for sailing 


- Some say that they become loose quickly / need frequent rebuilds.  I have 
used it 3 years (we sail all year long in GA too)  / check it whenever we go 
swimming / so far it's still slop free. 


For us on the lake, it works fine. We don't motor very long distances I 
typically burn about 20-30 gallons of fuel per year.  For us, it's more about 
top speed sailing  / we race a fair amount  / it fits the bill / it's 


Best of luck / email me if you need more details.  


-Francois Rivard

1990 34+ "Take Five" 

Lake Lanier, GA



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