Campagnolo Super Record pulley jockey wheel replacement and compatibility?
09-28-20, 09:41 PM
#26
blahblahblah chrome moly
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Mark B in Seattle
Last edited by bulgie; 09-29-20 at 01:41 AM.
09-29-20, 12:21 AM
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09-29-20, 02:21 AM
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Ha, I guess I've been doing it wrong all these years! I only mounted maybe a dozen pairs of Bullseyes, but I never used a shim or took even one second trying to center them – they just ended up wherever they ended up, random. Never noticed anything wrong with the function. Can you say what might go wrong when the 6 mm pulleys are off-center on the 5 mm bolts? It can only be off by 0.5 mm, so I'm guessing the answer is "not much".
Mark B in Seattle
Mark B in Seattle
That's what I found hard to do on any derailer that was bolted in place and/or with the chain in place. It was horrible!
09-29-20, 03:38 AM
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09-29-20, 02:18 PM
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So I finally have my computer back and working so I can post some pics.
These are the original pulleys from a read derailleur along with the pulleys from Bulls Eye, and from Chasertech . Cost of Campy is unobtainium. Cost of Bulls Eye on vintage sites is $50. And the cost of Chaser tech is less than $20 from their web site or on E-bay. You must specify 10 tooth and 5mm to get the diameter right and the correct set of spacers. HTH, smiles, MH
Original pulleys with steel sleeves and bronze bushing material. These are thicker than the replacement parts and only the oil cap goes on either side of the pulleys bushing is 5mm in id
Bulls Eye replacement pulleys 6 mm id and spacer washers to get the right spacing for the chain clearance. The washers are 6mm id
Chaser tech replacement pulleys 7mm bearing id with brass shims for 5mm id. Washers are 5mm to shim out the chain clearance
These are the original pulleys from a read derailleur along with the pulleys from Bulls Eye, and from Chasertech . Cost of Campy is unobtainium. Cost of Bulls Eye on vintage sites is $50. And the cost of Chaser tech is less than $20 from their web site or on E-bay. You must specify 10 tooth and 5mm to get the diameter right and the correct set of spacers. HTH, smiles, MH
Original pulleys with steel sleeves and bronze bushing material. These are thicker than the replacement parts and only the oil cap goes on either side of the pulleys bushing is 5mm in id
Bulls Eye replacement pulleys 6 mm id and spacer washers to get the right spacing for the chain clearance. The washers are 6mm id
Chaser tech replacement pulleys 7mm bearing id with brass shims for 5mm id. Washers are 5mm to shim out the chain clearance
