Re: [CR]Bullseye Pulleys/was Replacement Pulleys for NR?

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From: "Eric Elman" <>
To: <>, "Jan Heine" <>
References: <> <126a01c428b9$0c9ad130$efddfea9@mooshome> <001401c428bc$18ec0460$764ee544@elman1> <a052106a8bcae0cad6e8e@[]>
Subject: Re: [CR]Bullseye Pulleys/was Replacement Pulleys for NR?
Date: Thu, 22 Apr 2004 22:21:43 -0400


If I understand your email correctly, my experieance is been different then yours.

I am currently using two Campagnolo rear derailleurs (NR Pat 75 and SR 1st gen Pat 73) with these pulleys and the original washers - one washer on either side of each pulley. The washers are plenty thick enough and I have no problems running a Regina cheapo (all black but otherwise like the Oro) and a Regina Oro chain on the other. I know the washers from one set is original as I took the whole set-up up from its sealed bag. I still have another NOS sealed set and the washers appear the same too. Interestingly, the washers are not metric while the bearings are.

I do agree that the aluminum pulleys are noisy and wear faster then the plastic factory units.

Eric "confused, am I to thick?" Elman Somers, CT

----- Original Message -----
From: "Jan Heine"
Sent: Thursday, April 22, 2004 8:01 PM
Subject: Re: [CR]Bullseye Pulleys/was Replacement Pulleys for NR?

Ahh, but the Bullseye washers were too thin when using 2, and too thick when using all 4 (2 per side). When using a 7/8 speed chain, you could use 2 (1 per side), but the NR/SR bolt heads would protrude a bit. I guess it wasn't only standard bearings, but also standard washers. The obvious solution is machining custom washers...

Also, the aluminum pulleys are noisy, plus they wear faster than plastic. Still, I raced with them for many years with good results. Not a single race I did not finish due to pulley failure ;-) -- Jan Heine, Seattle Editor/Publisher Vintage Bicycle Quarterly

>Bullseye pulleys were indeed supplied with four washers. One washer was
>used on each side of each pulley in order to space the cages further apart.
>I believe the reason this was done was due to the fact that the pulley
>bearings were standard dimension (O.D. and I.D.) sealed bearings which for
>their given I.D and O.D. are only available in one width unless you special
>order them. At the rate they were sold I presume that it was an economic
>issue - less expensive to include 4 washers; much more expensive to use
>bearings of a non-standard size.
>Eric Elman
>Somers, CT
>just replaced 4 Bullseye pulley bearings two months ago.
>----- Original Message -----
>From: "jerrymoos" <>
>To: "r cielec" <>; <>
>Sent: Thursday, April 22, 2004 6:27 PM
>Subject: Re: [CR]Replacement Pulleys for NR?
>> Been a while since I installed Bullseye pulleys, but I think you just used
>> the original Campy pulley bolts and shimmed with small washers. In fact,
>> think the little washers came with the Bullseye pulleys. I don't know why
>> they didn't just make the pulleys thicker.
>> Regards,
>> Jerry Moos
>> Houston, TX
>> ----- Original Message -----
>> From: "r cielec" <>
>> To: <>
>> Sent: Thursday, April 22, 2004 2:42 PM
>> Subject: [CR]Replacement Pulleys for NR?
>> > Ahoy:
>> > Any suggestions for good replacement pulleys for NR rear derailluers and
>> or 6 spd friction? This would use a traditional friction width type chain,
>> say a Sram PC 48, or such.
>> > LBS over the counter pulleys all seem to be too narrow. And, several
>> ago a technician from Campag, California, advised me not to use Bullseye
>> they are too narrow. Thought of using washer-shims to increase distance
>> between plates but, could not find long enough pulley bolts. How's that
>> the nuts?
>> > See, you folks with bike shops and bins of little stuff have such an
>> time of it - just grab it, try it, try something else. I only wish....
>> > Thanks
>> > Richard Cielec
>> > Chicago, Illinois
>> >
>> >
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