another perfectly good motorcycle ruined.......

Saturday, 31 December 2011

 well, me and my big mouth, the 'easy' part of fitting the fairing proved to be the bracket off the headstock, the hard work and beard-stroking starts here, there are a lot of things to consider, clearance for the steering lock and to allow the controls and hands not to foul the fairing, remember the fairing stays in one position and doesn't move with the forks, height is crucial in this respect too, mounted too high and you lose the aerodynamic advantage of fitting the fairing in the first place, too low and it fouls the controls, [see how close to the top of the master cylinder in the second photo] fore and aft positioning needs consideration too, if it's fitted too far to the rear the rider won't be able to get his head behind the screen, again affecting the aerodynamics, too far forward? the clip-ons foul the descending edge of the fairing lower, i started by scrapping the rectangular bracket on the front of the headstock and just went with a single hole through the glassfibre, a couple of rubber washers and i could fasten the fairing to the mounting, fix a datum point and still allow movement to help the positionioning, straight away it became obvious that the lower edge of the fairing would have to be trimmed back, off it came and i carefully trimmed and filed the glass to shape, [this is race quality 'glass and is very thin to save weight, not like the more robust abs plastic found on road bikes], this was a procedure i had to do another three times to get the right fit, i also had to raise the clip-on's by twenty millimetres to allow clearance for my hands when on the bars, the single fixing will not be adequate alone to support the fairing so i have to come up with someway of supporting the top edge and screen, the bottom two photo's show the start of the solution to that little problem, the large chamfered screw with the allen key hole is the standard fixing for the top yoke which also acts as the adjustment for the steering head bearings, some material was cut out of the bottom of this on the lathe and two phosphour bronze bushes made up to run independently, [remember the fairing stays in one position, the forks, yokes etc turn to steer the bike], just got to figure out how to fix this to a support that allows all that to happen, no one ever said it was going to be easy............


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