Triple crank bolt woes
#1
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Triple crank bolt woes
The small ring bolts should be solid and the back should poke through to the front like this:
but I ordered a set, with the right part number according to the 1973 campy catalogue and I got these:
what is really going on?
are these meant for some sort of Willowizer triple or something?
but I ordered a set, with the right part number according to the 1973 campy catalogue and I got these:
what is really going on?
are these meant for some sort of Willowizer triple or something?
#2
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THOSE are some seriously rare bolts. The are for the Campy triple with the smallest ring of 42T
Part #830-831-832 See first pic below.
what you want is the Campagnolo inner ring adapter and bolt part # 818 - 761 - see Pic #2
Apparently there are Avocet and possibly Spiedel parts that also fit.
Jim Merz can make you some real spiffy ones out of stainless or titanium
good luck.
/markp
Part #830-831-832 See first pic below.
what you want is the Campagnolo inner ring adapter and bolt part # 818 - 761 - see Pic #2
Apparently there are Avocet and possibly Spiedel parts that also fit.
Jim Merz can make you some real spiffy ones out of stainless or titanium
good luck.
/markp
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I guess I've only seen 42 as the smaller chain ring.
The "RARE" set I have then is meant for a double and turn it into a triple. Can you give me an example of the three tooth count one should use?
The "RARE" set I have then is meant for a double and turn it into a triple. Can you give me an example of the three tooth count one should use?
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42-48-54?
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I geared my bikes 48-45-42 / 13-16-19-23-26, which makes a really nice 14-speed (no large-large cross-chaining) setup, with a range of 44 to 100 gear-inches. (Think of it as 1/3 step, instead of 1/2 step.) One of my Bikecology customers in 1973 converted his 54-47 double to a 54-50-47 triple, keeping the original 5-speed 14-18-22-27-34 freewheel.
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Capo: 1959 Modell Campagnolo, S/N 40324; 1960 Sieger (2), S/N 42624, 42597
Carlton: 1962 Franco Suisse, S/N K7911
Peugeot: 1970 UO-8, S/N 0010468
Bianchi: 1982 Campione d'Italia, S/N 1.M9914
Schwinn: 1988 Project KOM-10, S/N F804069
"Far and away the best prize that life offers is the chance to work hard at work worth doing." --Theodore Roosevelt
Capo: 1959 Modell Campagnolo, S/N 40324; 1960 Sieger (2), S/N 42624, 42597
Carlton: 1962 Franco Suisse, S/N K7911
Peugeot: 1970 UO-8, S/N 0010468
Bianchi: 1982 Campione d'Italia, S/N 1.M9914
Schwinn: 1988 Project KOM-10, S/N F804069
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single chain ring sandwiched with 2 chain guards for cyclocross
https://velobase.com/ViewComponent.a...29f79&Enum=115
https://velobase.com/ViewComponent.a...29f79&Enum=115
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THOSE are some seriously rare bolts. The are for the Campy triple with the smallest ring of 42T
Part #830-831-832 See first pic below.
what you want is the Campagnolo inner ring adapter and bolt part # 818 - 761 - see Pic #2
Apparently there are Avocet and possibly Spiedel parts that also fit.
Jim Merz can make you some real spiffy ones out of stainless or titanium
good luck.
/markp
Part #830-831-832 See first pic below.
what you want is the Campagnolo inner ring adapter and bolt part # 818 - 761 - see Pic #2
Apparently there are Avocet and possibly Spiedel parts that also fit.
Jim Merz can make you some real spiffy ones out of stainless or titanium
good luck.
/markp
Those cranks did a 20 year hibernation in a box. Pulled them out to get a new-to-me frame up and running. Three rides in, the crank broke through the pedal threads (with me at that same hefty weight).
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I have the answer. I will find it for you. Very tricky, but someone has come up with a McMaster Carr solution that I have tweaked. Will take about a day.
The small ring bolts should be solid and the back should poke through to the front like this:
but I ordered a set, with the right part number according to the 1973 campy catalogue and I got these:
what is really going on?
are these meant for some sort of Willowizer triple or something?
but I ordered a set, with the right part number according to the 1973 campy catalogue and I got these:
what is really going on?
are these meant for some sort of Willowizer triple or something?
#9
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The small ring bolts should be solid and the back should poke through to the front like this:
but I ordered a set, with the right part number according to the 1973 campy catalogue and I got these:
what is really going on?
are these meant for some sort of Willowizer triple or something?
but I ordered a set, with the right part number according to the 1973 campy catalogue and I got these:
what is really going on?
are these meant for some sort of Willowizer triple or something?
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#10
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Hey John. I have the campy parts 830, 831 and 832 as shown in the catalogue pic posted by Mark P of the Pacific NW.
They turn any campy Strada double cranks into a triple as long as the smallest chainring you use is a 42 tooth (which is crazy in my book, because every stock campy crankset I've ever bought, including new in the box always came with 52t and 42t).
To me, these solve a problem that doesn't exist. I've never really wished I had a 52, 48, 42 combo since that math can be pretty much created with the rear cluster.
That said, I still need what I need; parts #818 and 761. If anybody wants to trade. Please let me know.
They turn any campy Strada double cranks into a triple as long as the smallest chainring you use is a 42 tooth (which is crazy in my book, because every stock campy crankset I've ever bought, including new in the box always came with 52t and 42t).
To me, these solve a problem that doesn't exist. I've never really wished I had a 52, 48, 42 combo since that math can be pretty much created with the rear cluster.
That said, I still need what I need; parts #818 and 761. If anybody wants to trade. Please let me know.
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Hey John. I have the campy parts 830, 831 and 832 as shown in the catalogue pic posted by Mark P of the Pacific NW.
They turn any campy Strada double cranks into a triple as long as the smallest chainring you use is a 42 tooth (which is crazy in my book, because every stock campy crankset I've ever bought, including new in the box always came with 52t and 42t).
To me, these solve a problem that doesn't exist. I've never really wished I had a 52, 48, 42 combo since that math can be pretty much created with the rear cluster.
That said, I still need what I need; parts #818 and 761. If anybody wants to trade. Please let me know.
They turn any campy Strada double cranks into a triple as long as the smallest chainring you use is a 42 tooth (which is crazy in my book, because every stock campy crankset I've ever bought, including new in the box always came with 52t and 42t).
To me, these solve a problem that doesn't exist. I've never really wished I had a 52, 48, 42 combo since that math can be pretty much created with the rear cluster.
That said, I still need what I need; parts #818 and 761. If anybody wants to trade. Please let me know.
If you have to have the real deal, buckle up buttercup.
They can easily go for $150 when you can find them, Jim may make them for less but I doubt it.
They still only get you down to 36T with out a special ring so the benefit is low IMO.
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#13
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Back in the 1970s I kept two inner rings for my 2x5 Sugino Mighty setup, so that I could easily switch between 50-47 / 14-16-18-20-23-26 for flatlands half-step and 50-42 / 14-16-18-20-23-26 for hills.
With the long stack bolts I could have done 53-50-42, using the outer and middle chainrings for half-step, and the middle and inner for alpine (1.5-step). I tried to do 53-50-39 with Campag. Veloce, but the spider was too thick to accommodate a 3-tooth drop between the two outers, without the chain snagging between them. I settled for a 53-42-39 half-step-plus-overdrive setup, which worked OK.
With the long stack bolts I could have done 53-50-42, using the outer and middle chainrings for half-step, and the middle and inner for alpine (1.5-step). I tried to do 53-50-39 with Campag. Veloce, but the spider was too thick to accommodate a 3-tooth drop between the two outers, without the chain snagging between them. I settled for a 53-42-39 half-step-plus-overdrive setup, which worked OK.
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"Far and away the best prize that life offers is the chance to work hard at work worth doing." --Theodore Roosevelt
Capo: 1959 Modell Campagnolo, S/N 40324; 1960 Sieger (2), S/N 42624, 42597
Carlton: 1962 Franco Suisse, S/N K7911
Peugeot: 1970 UO-8, S/N 0010468
Bianchi: 1982 Campione d'Italia, S/N 1.M9914
Schwinn: 1988 Project KOM-10, S/N F804069
"Far and away the best prize that life offers is the chance to work hard at work worth doing." --Theodore Roosevelt
Capo: 1959 Modell Campagnolo, S/N 40324; 1960 Sieger (2), S/N 42624, 42597
Carlton: 1962 Franco Suisse, S/N K7911
Peugeot: 1970 UO-8, S/N 0010468
Bianchi: 1982 Campione d'Italia, S/N 1.M9914
Schwinn: 1988 Project KOM-10, S/N F804069
#14
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Hey John. I have the campy parts 830, 831 and 832 as shown in the catalogue pic posted by Mark P of the Pacific NW.
They turn any campy Strada double cranks into a triple as long as the smallest chainring you use is a 42 tooth (which is crazy in my book, because every stock campy crankset I've ever bought, including new in the box always came with 52t and 42t).
To me, these solve a problem that doesn't exist. I've never really wished I had a 52, 48, 42 combo since that math can be pretty much created with the rear cluster.
They turn any campy Strada double cranks into a triple as long as the smallest chainring you use is a 42 tooth (which is crazy in my book, because every stock campy crankset I've ever bought, including new in the box always came with 52t and 42t).
To me, these solve a problem that doesn't exist. I've never really wished I had a 52, 48, 42 combo since that math can be pretty much created with the rear cluster.
Having the 144 on the outside kind of limits your options for lower gearing- after a while I found some other rings- IIRC something like 48 and 42 and a 28 granny.
1986 Trek 400 Elance by Dave The Golden Boy, on Flickr
Avocet.Stronglight_zpsxp6csyr4 by Dave The Golden Boy, on Flickr
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Golden Boy….That is a very attractive set-up!!
I love the options the pre-drilled spider gives you.
My triple campy crank is pre-drilled to accept a campy 36 tooth granny chain-ring.
I'm just seeking a method to attach. I really like the McMaster-Carr answer. I owe that guy a nice bottle!!
I love the options the pre-drilled spider gives you.
My triple campy crank is pre-drilled to accept a campy 36 tooth granny chain-ring.
I'm just seeking a method to attach. I really like the McMaster-Carr answer. I owe that guy a nice bottle!!
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I have genuine Campagnolo inner chainring stand off mounts. I'll have to dig them out to make sure. Jim
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I was in need of some 8 mm ID spacers for the inner chainring for a triple crank on one of my bikes. I have a bunch of Wheels Mfg 10 mm ID spacers in various thicknesses, but they're too big for the 8 mm triple bolts alone. I finally found something that would work at an affordable price - 5/16" ID AN960 stainless narrow flat washers. The OD is small enough to not interfere with the chain, the ID is a near-perfect fit for 8 mm, and the 1.5 mm thickness makes it easy to stack them for the desired offset. I purchased them from Copper State Bolt & Nut, as they're a great in-town source for specialty fasteners, but may be available from other vendors.
https://copperstate.com/shop/5637158...cts#15AW3-031/
https://copperstate.com/shop/5637158...cts#15AW3-031/
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Having the 144 on the outside kind of limits your options for lower gearing- after a while I found some other rings- IIRC something like 48 and 42 and a 28 granny.
1986 Trek 400 Elance by Dave The Golden Boy, on Flickr
1986 Trek 400 Elance by Dave The Golden Boy, on Flickr
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Two genuine Campagnolo triple crank stand off boss sets. The first photo shows 5 NOS bosses, $125 per set as shown. The 2nd photo shows a set with 2 bosses that have been removed from a crank using a vise grip plier, the other 3 look to be NOS. This set is perfectly serviceable, the only issue is outer surface is marred on 2 bosses as shown. The mounting bolts are not included, you need Pista bolts. Road bolts from any Campy copy cranks will fit, but need to be shortened. This set is $85. Shipping inside the USA will be about $5. PM me.
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Oh. (smacks head)
The Campagnolo cranks use a smaller M6 thread in the crankarm, and the usual M8 for the chainring. I missed that earlier.
I'd stand corrected, but I just got comfortable...
The Campagnolo cranks use a smaller M6 thread in the crankarm, and the usual M8 for the chainring. I missed that earlier.
I'd stand corrected, but I just got comfortable...
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This is why I argue that although TA pioneered small-chainring triples (OK, Stronglight too), and Avocet optimized them, it was the Sugino Aero Tour and its combination of 110 mm outer BCD and 74 mm inner BCD that blew open the triple market to the masses. The Avocet was groundbreaking and prettier than the predecessors, but as you note still only allows a 42 tooth middle. The Sugino's use of the common BMX 110 BCD really opened up options.
That Avocet crank is really cool and the arms are so gracile- but as 79pmooney mentioned- it's not particularly uncommon to hear of the arms breaking by the pedal threads. I'm not a strong rider, and I've packed on some pounds since I built this- but I do keep an eye on that area for any abnormalities.
The Sugino AT is the cat's pyjamas. I think that's *THE* triple; although the Shimano FC6206 is really nice- the AT was cold forged and had those relatively gracile arms- by the time the XT cranks come, they have those wide arms that don't look as sleek.
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Thank you!
That Avocet crank is really cool and the arms are so gracile- but as 79pmooney mentioned- it's not particularly uncommon to hear of the arms breaking by the pedal threads. I'm not a strong rider, and I've packed on some pounds since I built this- but I do keep an eye on that area for any abnormalities.
The Sugino AT is the cat's pyjamas. I think that's *THE* triple; although the Shimano FC6206 is really nice- the AT was cold forged and had those relatively gracile arms- by the time the XT cranks come, they have those wide arms that don't look as sleek.
That Avocet crank is really cool and the arms are so gracile- but as 79pmooney mentioned- it's not particularly uncommon to hear of the arms breaking by the pedal threads. I'm not a strong rider, and I've packed on some pounds since I built this- but I do keep an eye on that area for any abnormalities.
The Sugino AT is the cat's pyjamas. I think that's *THE* triple; although the Shimano FC6206 is really nice- the AT was cold forged and had those relatively gracile arms- by the time the XT cranks come, they have those wide arms that don't look as sleek.
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One problem with a 41T ring on a 144mm BCD arm is that the chain can bump up against the spider. Avocet/Ofmega machined their arms to provide a little extra clearance for a 41T ring:
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