MERLIN ROCKET FORUM

Topic : Wanted: Sqaure hoop with traveller

I have a Winder square hoop already and the traveller is a large shackle that slides along the top of the hoop. It hangs up occasionallyand is hard to pull in a blow even with 2:1 on the traveller lines

Looking to switch to a hoop with a conventional traveller and car, if anyone has one they dont need anymore.

Thanks, John


Posted: 10/08/2011 17:43:33
By: John B (3404)
I mean, Square hoop, not Sqaure...


Posted: 10/08/2011 17:44:10
By: John B (3404)
It is important that the shock cord under the curved seat pulls / retrieves both handles back to the thwart. If it doesn’t then the added friction of the rope lying on the floor of the boat makes it very difficult to pull the traveller up.


Posted: 10/08/2011 23:31:03
By: John
So, John, all you need is a ball bearing traveller and bit of track which you can bolt on to the top of your hoop, and you are away!


Posted: 11/08/2011 16:40:53
By: ..
Mr Infinity (three dots)

Thats a good idea, I just didnt fancy drilling into the S/S, and then aligning the track with the existing sheave blocks. A complete hoop that was made that way is easier, but of course has to be fitted into the existing slot in the boat.

Well worth looking at - thanks


Posted: 11/08/2011 19:19:49
By: John B (3404)
.. and I see you are only two dots, so thats my crummy eyesight.


Posted: 11/08/2011 19:20:23
By: John B (3404)
It's probably easier - and certainly cheaper to fabricate a car out of tufnol/pulleys.

If you look at an older Winder tales' hoop and scale up the car to fit your tube it should work quite well, albeit slightly heavy.


Posted: 11/08/2011 19:28:39
By: Chris M
The thing to watch with a hand built pulley / car is that the blocks twist on the top bar of the traveller due to the lead in line from the boom which of course changes every time you move the sheet. Having done this on our old boat (see photo) and then swapped to the standard Harken traveller on BAU, I was amazed at the difference.

Got a local machine shop near you? Get them to drill and tap out the top bar for the traveller ...

http://www.merlinrocket.co.uk/gallery/view_photo.asp?folder=gallery/building_and_repairs/carbon_hoop_3386&file=3386_hoop_pic6.jpg

Posted: 11/08/2011 21:21:39
By: Andy Hay - 3626 Business as Usual
A lot of home made cars fail beacause they are done with stainless steel rather than tufnol. Tufnol is a low friction product intended to do exactly what is asked of it in this particular application.

I'd also add that the angles of the ropes are very, very critical. When I had Armed Forces it only had a shackle sliding up and down and it was perfectly satisfactory.


Posted: 11/08/2011 23:02:14
By: Chris M
It is quite easy to fit a Harken track and car to your existing square hoop - I did so on 3489 Love on the Rocks to replace the sliding shackle arrangement.  If I can do it, anyone can!

The other tip I would suggest is find a friend that is travelling to the USA and get them to pick the car and track over there. You will end up paying half the UK cost.


Posted: 16/08/2011 10:23:25
By: RichardT

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