Pinarello Prince SL Headset

Quoted message said:

Hi all,

I've been trying to clean and readjust my Prince's headset, but the
design seems a bit unsual to me. Is there a diagram or some info on
that headsets (or similar design) anywhere? I am a little unsure about
what to do, as I expected the fork to fall down once I remove the main
screw, but it didn't. Furthermore, there seems to be no spider
attached to the fork pipe, but a cut-cylinder with a rubber seal
tightened by two tapered parts...

All info willl be very appreciated 🙂

If it is anything like the 2005-6 era Pinarellos I've dealt with, it's
just some odd sized machine bearings pressed into the frame. The fork
required a fair amount of coaxing to get loose.

Joseph

On Nov 24, 12:16 pm, [email hidden] wrote:
Furthermore, there seems to be no spider

Quoted message said:

attached to the fork pipe, but a cut-cylinder with a rubber seal
tightened by two tapered parts...

That's a "bung." They're used on all carbon steerers because star nuts
would damage the tube.

email hidden said:

If it is anything like the 2005-6 era Pinarellos I've dealt with, it's
just some odd sized machine bearings pressed into the frame. The fork
required a fair amount of coaxing to get loose.

Joseph

Thanks a lot, Joseph, I guess you're right. I didn't try to separate
the fork by force, and then just assumed something was still keeping
it...

Hank Wirtz said:

On Nov 24, 12:16 pm, [email hidden] wrote:
Furthermore, there seems to be no spider

Quoted message said:

attached to the fork pipe, but a cut-cylinder with a rubber seal
tightened by two tapered parts...

That's a "bung." They're used on all carbon steerers because star nuts
would damage the tube.

Thanks, Hank. My age is showing already, since I left worrying about
bike mechanics when classic headsets and metallic pipes were still the
norm.

As for that "bung", I guess both tapered parts should be facing the
cylinder ends, shouldn't they? In my bike, the bottom one was not,
making me think it was misfitted, since the purpose of the taper
should be blocking the cylinder within the fork pipe by opening it. Am
I right?

Thanks for you help, and please excuse my limited English.

Quoted message said:

Hank Wirtz said:

On Nov 24, 12:16 pm, [email hidden] wrote:
Furthermore, there seems to be no spider

Quoted message said:

Quoted message said:

attached to the fork pipe, but a cut-cylinder with a rubber seal
tightened by two tapered parts...

Quoted message said:

That's a "bung." They're used on all carbon steerers because star nuts
would damage the tube.

Thanks, Hank. My age is showing already, since I left worrying about
bike mechanics when classic headsets and metallic pipes were still the
norm.

As for that "bung", I guess both tapered parts should be facing the
cylinder ends, shouldn't they? In my bike, the bottom one was not,
making me think it was misfitted, since the purpose of the taper
should be blocking the cylinder within the fork pipe by opening it. Am
I right?

Thanks for you help, and please excuse my limited English.

For what it's worth, I have not found it necessary to remove the
"bung" to get the fork out of a 2005 Galileo and a 2006 F4:13.

Joseph