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Chinese Carbon Road Bikes => Road Bike Frames, Wheels & Components => Topic started by: Spain80 on November 18, 2024, 02:16:18 PM

Title: Chinarello Dogma F Fork Race seating
Post by: Spain80 on November 18, 2024, 02:16:18 PM

Hi my LBS in spain is building my latest bike, they are concerned at the gap between the fork & frame.

A race seating tool was used but the gap is still there.

Frame manufacturer Taiwan Carbon.

Anyone please advise.

Thanks.

Title: Re: Chinarello Dogma F Fork Race seating
Post by: ry on November 20, 2024, 06:56:19 PM

Do they think there should be no gap? What is the effect of the gap that they are concerned about?

Title: Re: Chinarello Dogma F Fork Race seating
Post by: Spain80 on November 20, 2024, 07:00:26 PM

Please see the picture, the gap is large and there is play when holding the brake and rocking the bike. The torque settings are correct to manufacture settings.

Title: Re: Chinarello Dogma F Fork Race seating
Post by: Sebastian on November 20, 2024, 11:39:50 PM

It’s obvious from your video that the crown race doesn’t go all the way onto the seat. Therefore it doesn’t sit flat and it has play. Make sure that it’s not the crown race itself causing the issue. Put it on another fork and see if it fits or try a different crown race on your Chinarello fork. But I imagine that it’s simply an issue of manufacturing tolerances. You’re probably going to have to measure the crown race seat to see if it’s out of round and carefully sand away excess material until it fits. Not exactly for the faint hearted but I think there should be more than enough material there.

Another good example of what can go wrong with frames like these.