I'm using the Low Beam track with 4" hole centers, and am planning to leave the OEM end stops in place, cutting the new track to exactly the same length as the old and using the existing holes. That seems to allow the maximum travel for the new car. I picked #12 flat head bolts as the biggest that would fit the Harken track. I'm using a Harken 073 eyestrap mounted on the cockpit side near the end of the track to dead-end the control line, and a small deck block from Duckworks also mounted on the side at the end of the track for the return of the control line from the car. The line then returns to the becket tube on the car. I haven't drilled any holes yet, so if this doesn't seem like a good plan I hope someone tells me. Rick M17 #633 Lynne L On Wednesday, March 14, 2012, W David Scobie <wdscobie@yahoo.com> wrote:
we are using the same track as Bill, the Harken 2720.600MM Trk-SB CB 600MM Low Profile, on the Sage 17. the fasteners used are 10-32 oval head machine screws.
the end stop for this track is the Harken '173A End Stop-SB'. the end stops also uses a 10-32 oval head machine screws.
:: Dave Scobie :: Sage Marine
--- On Wed, 3/14/12, Bill Wickett <billwick@gmail.com> wrote:
Rick,
I am doing the same. I believe that the track spec uses #10 screws (5mm) not #12 for mounting. I am away today so can't look at the actual card with the track. Here is the PDF from the Harken site http://www.harken.com/pdf/4972.pdf
Which track are you using? The Harken Low Beam 22mm CB track (captive ball track) is available with 4" hole centers (same as the OEM hole spacing) but only in a much longer length (6 feet) that needs cutting down. Harken #373.6. List $93.60 22mm Low Beam CB track is also available with 100mm hole spacing (3.93") in a 600mm length (23.6"). Harken #2720.600 List $34.40. This is the track I have. Not installed yet, boat is still under cover, but I expect to fill all holes and drill and pot with epoxy on new slightly different ( by .070")centers. Will have to cut a slight amount from each end to fit the end caps.
These tracks will fit the windward sheeting cars 2744 / 2745 / 2746. I have the 2744 car. Looking forward to using it.
Good luck
Bill Wickett Makin' Time M17 #622
On 3/14/12, Rick Davies <jdavies104@gmail.com> wrote:
I am installing a Harken windward sheeting traveler and track, and found that the Harken track mounts with #12 bolts, which look to be about half the diameter of the bolts for the OEM track. Since others have installed this track, I suppose that the bolt size is OK, but I wanted to ask advice as to whether I can use the old holes without filling them in and drilling a smaller size hole. Bob Eeg said that the old holes (which look fine) could be used as is, but that was assuming re-using the original bolts. Anybody have any ideas about what I should do?
Thanks in advance, knowing that help will be on the way,
Rick M17 #633 Lynne L