Overboarding block for 1/4" Hydro Wire
Posted on November 12, 2010

Originated From: Christopher Griner (WHOI) on Wed, 10 Nov 2010

Has anyone in recent years purchased an overboarding block for use with 1/4" 3x19 Hydro Wire? Or, what are you currently using? Can anyone recommend a manufacturer? We may be looking to replace one soon and that manufacturer appears to be long out of business.

Thanks,

Chris

________________________________
Christopher Griner
Shipboard Scientific Services Group
Woods Hole Oceanographic Institution

Response From: Lynne Butler on Fri, 12 Nov 2010


Hi Chris,
On Endeavor we use Harken blocks for each of the wires including 1/4". We also have a Harken block for trace metal work. The blocks are lightweight and durable. The wire doesn't ever get stuck between the cheek & sheave. The only thing I don't like about them is the open bearings - they need to be rinsed with fresh water frequently. Our block for 9/16" wire became stuck after its first use but loosened up with a fresh water soak. The bearings for the 9/16" block are a slightly different design than the ones for 1/4" & .322. The smaller blocks haven't gotten stuck, they just squeak when a bit dirty. The block comes apart easily for cleaning with a rag & water. Harken suggests not using any lubrication other than water.

One contact at Harken is:
Dane Blackburn
Harken Yacht Equipment
262-691-7508 ext. 230
fax 262-691-3807
daneb@harken.com

Hope this helps, Lynne