August 10th, 2020, 12:50 AM
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#15 |
Senior Member
Joined: Nov 2001 From: Ely, England Posts: 16,419 Thanks: 582 I Ride: Husaberg FE501e 2003 |
while working with the K series needle i discovered one serious floor in the design. so each needle I work on now has to have material removed.
I tried the drill in the drill stand and upright but you have no control and can see nothing. so the drill is now in the vice.
I mark the area I want to rework by scratching a deep line top and bottom. as I rub it down, the sharp (not very aerodynamic) edges come off.
Dell Orto, IMHO make not 100 x 'K' series needls but only a handful, then harden them, THEN grind them down into shape and polish. that is why you can see the codes are clearly added afterwards.
THIS MEANS YOU CAN RUB A LOT OF MATERIAL OFF. THERE'S LOTS OF IT.
I use a steel ruler just 12.8mm wide and P400 wet and dry. I use WD40 and have constant use of the vernier. we're talking here of taking NOT a tenth of a MM off but just a HUNDREDTH of a mm off.
I then finish by polishing the needle with Brasso. you can see the tin of Brasso behind me in blue and white. Note in the big photo that the vernier is never far away!
Taffy
Last edited by Taffy; August 10th, 2020 at 12:58 AM.
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