Putting together an old Colnago with retro gear. Looking through my junk (retro treasures) I found a set of 30 year old Durham Bullseye Pulleys. The grease feels a little dry. I was thinking of trying to inject some new grease through the rubber seals with a hypodermic needle.
Anyone have any experience with this?
I've had a set of Durham Bullseye Pulleys on a first generation Suntour Cyclone since 1975. The derailurer has been on a number of different bikes but still works flawlessly. I like these pulleys because of the smooth feel of the chain across the aluminum teeth versus noisy plastic teeth.
You can carefully pry the seals off at the inside lip with a small screwdriver (try not to bend them), flush out the old grease with solvent, repack with grease, replace the seals.
Nick
"* * Chas" <[email hidden]> wrote in message news:[email hidden]...
Quoted message said:
Putting together an old Colnago with retro gear. Looking through my junk (retro treasures) I found a set of 30 year old Durham Bullseye Pulleys. The grease feels a little dry. I was thinking of trying to inject some new grease through the rubber seals with a hypodermic needle.
Anyone have any experience with this?
I've had a set of Durham Bullseye Pulleys on a first generation Suntour Cyclone since 1975. The derailurer has been on a number of different bikes but still works flawlessly. I like these pulleys because of the smooth feel of the chain across the aluminum teeth versus noisy plastic teeth.
You can carefully pry the seals off at the inside lip with a small screwdriver (try not to bend them), flush out the old grease with solvent, repack with grease, replace the seals.
Nick
"* * Chas" <[email hidden]> wrote in message news:[email hidden]...
Quoted message said:
Putting together an old Colnago with retro gear. Looking through my junk (retro treasures) I found a set of 30 year old Durham Bullseye Pulleys. The grease feels a little dry. I was thinking of trying to inject some new grease through the rubber seals with a hypodermic needle.
Anyone have any experience with this?
I've had a set of Durham Bullseye Pulleys on a first generation Suntour Cyclone since 1975. The derailurer has been on a number of different bikes but still works flawlessly. I like these pulleys because of the smooth feel of the chain across the aluminum teeth versus noisy plastic teeth.
Chas.
A better pry tool is a utility knife. The sharper/pointier the tip, the better.
Putting together an old Colnago with retro gear. Looking through my junk (retro treasures) I found a set of 30 year old Durham Bullseye Pulleys. The grease feels a little dry. I was thinking of trying to inject some new grease through the rubber seals with a hypodermic needle.
Anyone have any experience with this?
I don't think it would work with a syringe, but you can get needle tips for grease guns. I've found these to be extremely useful. You can apply grease through rubber seals or just through tiny clearances.
I've seen suggestions about replacing the bearings using an arbor press but I'm not up for tying to find the correct bearings.
The seals will usually have the bearing's designation imprinted on them. You can get inexpensive replacements from a place like http://vxb.com/ (though you might have to buy 10 bearings at a time, which makes a single bearing swap much less economical).
I used a dental pick, 3 of the seals popped right out. The 4th had hardened and started to break so I left it in place. After cleaning and repacking them with grease they're good as new again.
