belize1334
Well-known member
I was cleaning up my new_to_me Fidanza FlyWheel when I noticed that a few of the surface fasteners appear to have been scraped by the friction disk from the previous installation. I took these pictures to illustrate the point.
Here's an image of one of the good fasteners. Notice that it sits a few millimeters below the friction surface.
Compare that to this image of the improperly counter-sunk hole. Notice that the fastener is flush with the surface and has been scraped by the passing puck.
The scrapes on the screw head don't line up with those on the surface but that's because I pulled the screw out and then reassembled it. I was looking for debris stuck under the screw head which would keep it from fully seating. Unfortunately, the underside was nice and clean and that's as far down as it can sit. There are a few other holes like this but they're not as bad and they're all grouped around the same place. I think that the disk may not have been level when the holes were drilled and that some are not deep enough as a result. Note also that the deeper hole is also wider which is consistent with using the same counter-sinking bit and not pressing it deep enough.
I seems clear to me that this is a manufacturer's defect. I'm thinking maybe I can get Fidanza to issue an RGA but since I didn't buy the piece new they may give me some grief. It also occurs to me that I could get a machinist to chase those holes so that the fasteners sit properly. I know a machinist so this would be free vs. the $50 to buy a new surface from summit. What do you guys think?
Here's an image of one of the good fasteners. Notice that it sits a few millimeters below the friction surface.
Compare that to this image of the improperly counter-sunk hole. Notice that the fastener is flush with the surface and has been scraped by the passing puck.
The scrapes on the screw head don't line up with those on the surface but that's because I pulled the screw out and then reassembled it. I was looking for debris stuck under the screw head which would keep it from fully seating. Unfortunately, the underside was nice and clean and that's as far down as it can sit. There are a few other holes like this but they're not as bad and they're all grouped around the same place. I think that the disk may not have been level when the holes were drilled and that some are not deep enough as a result. Note also that the deeper hole is also wider which is consistent with using the same counter-sinking bit and not pressing it deep enough.
I seems clear to me that this is a manufacturer's defect. I'm thinking maybe I can get Fidanza to issue an RGA but since I didn't buy the piece new they may give me some grief. It also occurs to me that I could get a machinist to chase those holes so that the fasteners sit properly. I know a machinist so this would be free vs. the $50 to buy a new surface from summit. What do you guys think?