Tuesday, January 12, 2010

Replacing worn out stuff: Pinarello Paris.

In preparing for the upcoming road season I am replacing all the stuff that gets worn out or makes noise or is just dangerous on the Pinarello.

Cables and brake pads - easy and standard ~50 dollars and a couple hours.

The BB had me worried as I have taken it to a couple shops and they gave me a blank look.
I dove in to the BB project myself a couple days ago. This BB was created after someone thought up BB30 but before they had actually created the parts. It is basically 2 bearings pressfit into the frame and then two aluminum CNC'd adapters to match the spindle of the crank.

I recently noticed a little bump in my steering and realized my headset has outlived its usefulness. This bump probably didn't help when I crashed on a bus tunnel grate a couple days ago. GRRR. This project really scared me, as it turns out it is basically 2 bearings pressfit into the frame, the bore just happens to match the size of the steertube.

Here is the best part. How much would you expect to pay for a replacement pinarello headset and BB? 100? 200? Way off. All four of the bearings mentioned above are the same size. All readily available. I got 4 for 30 dollars, shipped, thanks ebay!. I created my own bearing press fit tool out of a threaded rod, some nuts and some washers.


Ted Diamond said...

Damn! Very nice!

Ted Diamond said...

But, you know, in this new BB30 world,there's little place for people with my impressive thread-stripping skills. I am a dinosaur.

Mike on Bike said...

Hi, my F4:13's headset bearings also need to be replaced. This is what 1 year (4000 miles) of bike commuting has done. I've extended their life with Triflow but they're acting up again. Can you expand on your DIY press tool?

Chad said...

What I did was take a threaded rod with nuts to match it. This was borrowed from a spring compression tool. Like this: http://www.harborfreight.com/cpi/ctaf/Displayitem.taf?itemnumber=3980

I took a couple of impact sockets that were the same size as the bearing minus 2-3mm and put washers on the side where the nut goes. I imagine the washers would work alone.

As I was writing this I remembered I had seen this: http://www.instructables.com/id/How-to-make-a-bike-headset-press-&-install-a-heads/

Just make sure the bearings fit on the steertube first, the tolerances could make them difficult.

Dave said...

Chad, just came across your post. i am looking to replace the headset bearings in my Paris. Could you tell me the bearing you used. Spec, Size etc. Thanks

Chad said...

Oh man, that pinarello!

Luckily I still have it and will check out the specs on the headset when I get home. Look through the blog to find my story about how that frame lives on the wall in my garage. :(

I might even have some of the bearings sitting around that I never put in before its demise.

Chad said...

I finally took a look at the old, sad Pinarello. The bearings for the headset are 6806RS.

Others have attempted this same DIY job here: http://www.bikeforums.net/archive/index.php/t-176565.html

and many other places I have found.