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linear drive steering system

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mystudio View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote mystudio Quote  Post ReplyReply Direct Link To This Post Posted: 17 May 2018 at 21:03
Good point. Will check this tomorrow, however, from what I think to know, it wasn't possible because of the height. But, again, will make sure by testing this. Thx!
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mystudio View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote mystudio Quote  Post ReplyReply Direct Link To This Post Posted: 23 May 2018 at 12:30
Okay, here is my situation:

All original Jefa 150 steering. However, the swing of the tiller is around the 90 degrees in total, I think. The pin of the tiller for the draglink is on 200mm. The pin on the drive output is 130mm. The offset between the drive and the tiller is 65-70 mm. See pics below. This makes that in my opinion, the draglink has to travel too much and the housing of the drive is causing problems. In my opinion the drive is mounted the wrong way, I don't know why Jefa is saying it should have an offset of 106 mm. Even with 65 mm offset like it's having right now, it causes troubles. I think it only can work without any offset like all, otherwise it will always touch it's own housing. So, in case of a Hanse (320), am I right that dismounting the drive and moving it back without offset (probably by putting the drive under a 45 degrees angle, because of space) will solve the problems? Any insights on this? 


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Post Options Post Options   Thanks (0) Thanks(0)   Quote JUTTER Quote  Post ReplyReply Direct Link To This Post Posted: 23 May 2018 at 19:13
Hi,
Here are some pictures of my set up of the Jefa DD1 in my Hanse 350. 
Works very well.

Claude

JUTTER, Hanse 350, 2010, deep keel, Zeeland
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mystudio View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote mystudio Quote  Post ReplyReply Direct Link To This Post Posted: 23 May 2018 at 20:08
Thx Claude! I think I notice two differences. First: your tiller has the pin of both drags on the same lenght of the arm. And second: it looks like the total travel of your tiller is less than 80 degrees. On my Jefa steering the total travel is almost 100 degrees, so, the drive has to swing even more than that because of the shorter arm. Maybe that causes my problem; too much travel for the tiller.
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Captain Cook View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Captain Cook Quote  Post ReplyReply Direct Link To This Post Posted: 23 May 2018 at 22:39
I wrote earlier:
"In Jefa homepage you can find the technical specifications, like max rudder movement 2x36 degrees, and max DD1 movement 2x65 degrees".
Maybe you should check the condition of the two rubber-stops, supossedly preventing the rudder not to move more than 2x 36 degrees.
You can check the technical drawings on Jefa homepage, (and see the complete installation manual).
In your photos the movement of the arm of DD1 sure seems to be some 150 degrees, and as you can read above (and in Jefa drawings), the maximum allowed movement is 130(128) degrees.
In the pictures from "JUTTER" the movement seems to be correctly about 130 degrees.
Bring a protractor to your boat, and check the angle of movement, and if the angle exceeds 130 degrees, maybe the rubber-stops are damaged or missing.
I posted a picture of the installation in a 370/400, here you can see one of the rubber-stops under the aluminium footing-plate.


Edited by Captain Cook - 23 May 2018 at 23:05
Freya Hanse400#27
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