Source for replacement sheaves

Jul 7, 2024
43
Catalina 27 Lake Keowee
The sheave on this single line reefing clew car fell apart. Most likely age.

Is there a good source for replacement sheaves, or do I have to go to the OEM to get a replacement?

I am not sure of the OEM at this point. Still investigating. And I am assuming I can replace just the sheave.

Harken_block_car.jpg
 
Nov 6, 2006
10,026
Hunter 34 Mandeville Louisiana
The sheave can be replaced but it is not easy to. You have to drill the expanded end of the sheave axle and press it out. The axle can be replaced with a recessed head shouldered bolt. The pulley hole cannot impinge on any bolt threads The sheave itself is available from Schaefer, the OEM, or you can source them from places like Vela Sailing or Defender or West Marine or Amazon.. it is best to remove the old sheave so that you can measure it precisely. Sometimes there is a bushing in the sheave that makes the ID bigger than outside appearance would suggest.
EDIT Found a couple of pictures. I think I got the sheaves from Vela. Axle drilled and wheels removed in order to measure the bushing diameter which is the ID of the new sheave.
IMG_0622.JPGIMG_0639.JPG:)
 
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jssailem

SBO Weather and Forecasting Forum Jim & John
Oct 22, 2014
22,542
CAL 35 Cruiser #21 moored EVERETT WA
Measure the width of the track. Check with Garhauer Marine.
 
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Mar 9, 2025
2
Choy Lee OS 41 Crystal Coast
The sheave on this single line reefing clew car fell apart. Most likely age.

Is there a good source for replacement sheaves, or do I have to go to the OEM to get a replacement?

I am not sure of the OEM at this point. Still investigating. And I am assuming I can replace just the sheave.

View attachment 230124
I would consider replacing the system. The hassle and time involved of drilling and pressing the pins out is a pain in the proverbial derriere.
The Shiv on my Catalina 30 broke due to old age and ended up replacing mine with a new Harken System.
Saved Time and Money you could also check to see if Fisheries Supply or West Marine carry just the car assembly. If you are outside the US, Fisheries ships internationally
 
Apr 1, 2004
167
Catalina 34 Herring Bay Chesapeake, MD
The sheave on this single line reefing clew car fell apart. Most likely age.

Is there a good source for replacement sheaves, or do I have to go to the OEM to get a replacement?

I am not sure of the OEM at this point. Still investigating. And I am assuming I can replace just the sheave.

View attachment 230124
This was OEM manufactured by garhauer.com check the web site