New Harkin Mainsheet Blocks

I received my new mainsheet blocks a few days ago. They have a slightly different look and feel than I’m use to with other Harkin blocks. I’m struggling to describe the difference, but the only explanation I can give is that they feel more like a Laser block than most Harkin blocks. How’s that for specifics? They have a slightly less dense feeling than other Harkin blocks. They are essentially the same size as the old blocks.

I like that there is an exposed metal post where the blocks attach to the eyestraps on the boom; no plastic to wear here. The lower-traveler block seems primitive compared to the rest, which are bearing blocks, but it runs smoother than the old Laser blocks.

Installation is pretty straightforward. The packaging shows pictures that will help you orient the correct end of the boom-end block in the eyestrap. (Hint: the metal goes under the strap and the cutout design should match the way the forward block goes.) The eyestraps are attached with stainless pop rivets so use a sharp drill bit and be prepared for a bit of a struggle “popping” the new ones. And leave extra time to untie the traveler knot unless you’re going to replace it, then cut it. I had to work hard untying my traveler bowline – you know the knots that are supposed to release easily.

The first difference I saw in having the bearings was that the line rolled back out of the block when I threaded just two feet through it and let go. Then I rigged the boom on the deck but didn’t finish running the line through the traveler blocks and as I lifted the boom onto the gooseneck a sizable length ran back out the front end of the boom. Now that’s the way a block should work!

A couple of days ago I had a chance to sail with them in light stuff, not drifting, but running in under 6 knots. They do make a difference! It was clear that my soft eyestrap on the boom was the only significant source of drag. It is almost disconcerting how quickly the sheet runs out; I’ll need to be careful letting the line lay on deck while I push the boom out – it ran out to past 90 degrees all the way to the knot.

I like the way they feel and am glad I made the switch. At the end of my two-and-a-half-hour sail, I had completely forgotten they were there. It will be interesting to see if they change my boat handling in any way.