Campag Record 151bcd triple chainset…?

[ferrus]

With middle and inner ring almost the same size!…
What’s going on here then? -
https://www.ebay.co.uk/itm/22647158...0XT6MK&hash=item34bac22559:g:480AAOSwaj5l7u3p

 

[ferrus]

anyone able to account for these - is there any method in the apparent madness??

 

[grantoury]

anyone able to account for these - there any method in the apparent madness??

I have a sort of half step on my Vittorio and like it, so I guess this is a second half step. But they are so close the differences are minute. Perhaps for a TT bike?

 

[ferrus]

I wondered if it was that; a sort of half step + big gear instead of granny. Seems very odd!

 

[bikeworkshop]

It's jusr the casting for a double though with long bolts and spacers carrying the inner ring.

You could do this with any double of the period

I don't like hanging rings off the bolts- they ought to be supported by the crank tabs.

 

[Rod_Saetan]

It could well be the only rings to hand, Campag were rather notorious for just whacking whatever bits they had lying around together! It also isn't new so could have been done just in order to sell it, especially if the rings were worn, people probably pay a premium for triple early Campagnolo stuff these days. The box does state '42 52', is 42 the smallest ring in 151?

 

[ferrus]

It's jusr the casting for a double though with long bolts and spacers carrying the inner ring.

You could do this with any double of the period

I don't like hanging rings off the bolts- they ought to be supported by the crank tabs.

Yeah, all the genuine Campag Record triples I’ve seen have been threaded through the spider to take the inner ring.
As you say, any double could do this with long bolts and spacers. But why the hell have they…. it’s just bizarre!

 

[vcballbat]

I doubt that it came from the factory as a triple, most likely a triple conversion using longer cyclo-cross chainring bolts for two bash guards and a single ring... then command a massive price tag £££