Main sheet lower block upgrade

Topics about Class Rules and the RRS.

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Posts: 19
Joined: Thu Mar 05, 2015 12:16 pm

Main sheet lower block upgrade

Post by bmastror » Fri Oct 13, 2017 8:54 am

Harken has upgraded the lower block and the traveler swivel (you have to buy the entire assembly)
Item Number: HSB456, Description: #14CAM BASE-LG SWV J109 UPGRADE

The replacement U adapter info:
Item number H-29180A, Description: U-ADPT FOR 1/4in PINS J109
I attached a picture with the old U adapter next to the new one. As you can see, the new one is much larger. Hopefully this will prevent the U adapters from breaking in the future.
IMG_0147 (1).JPG
IMG_0147 (1).JPG (684.2 KiB) Viewed 336 times
IMG_0146 (1).JPG
IMG_0146 (1).JPG (558.46 KiB) Viewed 336 times
IMG_0463.JPG (949.14 KiB) Viewed 336 times

Bengt J
Posts: 26
Joined: Tue Oct 25, 2016 2:36 pm

Re: Main sheet lower block upgrade

Post by Bengt J » Thu Oct 19, 2017 9:08 am

Brooke, Thanks for posting this info!
The upgrade is a safety issue and absolutely Class Legal. Other custom solutions for heavy duty versions of this connecting piece are also Class Legal as long as the function of the Block/Swivel assembly is not changed.

Bengt Johansson

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