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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Hydraulic Steering Damper
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<blockquote data-quote="macvette" data-source="post: 99457" data-attributes="member: 262"><p>Hi Vic, </p><p>I did look at your U tube video. I have slow broadband so posting videos is a pain. Here are 3 pictures, one straight ahead, one full right lock and one full left. The damper body stays almost but not quite parallel to the axis of the Girdraulic concentrics and Vincent's on his Bramptons is similar. What determines the damper stroke is the distance the damper pivot is behind the centre of rotation of the steering. The further aft it is the more damper stroke is used. The length and offset of the actuating arm is a bit of a red herring. The length is set by where the damper is at mid stroke and this is true of your design as well as the "old" versions. The offset (on mine at least) was chosen to minimise lost motion in rotating the damper body with respect to the rotation of the steering so that the damper gives maximum resitance to the motion of the steering ie there is minimum side thrust on the damper. Its not perfect but the best I can do with a hacksaw, drill and files.</p><p>Norman has done the math so I can't add any more. Anyway, as they say, there are more opinions in the club as there were bikes made so have fun. Regards Mac</p><p>[ATTACH]23721[/ATTACH][ATTACH]23722[/ATTACH][ATTACH]23723[/ATTACH]]</p></blockquote><p></p>
[QUOTE="macvette, post: 99457, member: 262"] Hi Vic, I did look at your U tube video. I have slow broadband so posting videos is a pain. Here are 3 pictures, one straight ahead, one full right lock and one full left. The damper body stays almost but not quite parallel to the axis of the Girdraulic concentrics and Vincent's on his Bramptons is similar. What determines the damper stroke is the distance the damper pivot is behind the centre of rotation of the steering. The further aft it is the more damper stroke is used. The length and offset of the actuating arm is a bit of a red herring. The length is set by where the damper is at mid stroke and this is true of your design as well as the "old" versions. The offset (on mine at least) was chosen to minimise lost motion in rotating the damper body with respect to the rotation of the steering so that the damper gives maximum resitance to the motion of the steering ie there is minimum side thrust on the damper. Its not perfect but the best I can do with a hacksaw, drill and files. Norman has done the math so I can't add any more. Anyway, as they say, there are more opinions in the club as there were bikes made so have fun. Regards Mac [ATTACH]23721[/ATTACH][ATTACH]23722[/ATTACH][ATTACH]23723[/ATTACH]] [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Hydraulic Steering Damper
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