Lightweight vintage triple cranksets
08-02-21, 12:43 PM
#51
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Your bike reminds me of the first decent bike I owned, a Centurion, don't remember which model, that I got while in grad school at UCSB, around 1975. Broke spokes regularly until I built new wheels with 14g spokes, phil wood hubs and mavic rims. It was a great bike that sadly was stolen when I moved to chicago in 1980.
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08-02-21, 12:43 PM
#52
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My crazy homespun trekking triple that I have built up is "vintage" in a cartoon kind of vintage way... I took 3 gold KCNC "SpiderRings" and mounted these on the correct BCD splined spider that mounts on Cannondale Hollowgram SL crank arms and onto the 30mm Hollowgram bottom bracket. The rings I believe are 24/34/48. I am at work now and cannot post photos yet (but I can later if anyone is interested). I believe the weight on this crank should be pretty low. I will weigh it on my Pampered Chef digital kitchen scale (don't judge me).
I have a threaded English bottom bracket on my Cannondale Silk Tour really wants this BB30 specific triple crank to run on it. it really does. I bought a BSA30 threaded bottom bracket - "Aerozine" brand which is pretty nice Taiwanese quality. It is installed on the bike and looks cool. Unfortunately the axle length is wrong and when I torque the bolts the bearings tighten up making turning the axle too tight. I plan to reach out to my Cannondale dealer to make my custom triple crank a reality.
I have a threaded English bottom bracket on my Cannondale Silk Tour really wants this BB30 specific triple crank to run on it. it really does. I bought a BSA30 threaded bottom bracket - "Aerozine" brand which is pretty nice Taiwanese quality. It is installed on the bike and looks cool. Unfortunately the axle length is wrong and when I torque the bolts the bearings tighten up making turning the axle too tight. I plan to reach out to my Cannondale dealer to make my custom triple crank a reality.
08-02-21, 12:51 PM
#53
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I have a M900 XTR crank on my Green Superior. These are hard to find, even in OK shape, but I managed to score a NOS set with 172.5mm arms. (I have nice friends.)
I don't know how much they weigh. Considering the size of my post-COVID belly... I don't care.
I don't know how much they weigh. Considering the size of my post-COVID belly... I don't care.
But short of this there is a real need for a tutorial or better yet, a service - that can restore that lustrous polished, yet protected and clear anodized finish of these lovely period components. I have an M900 crankset that I purchased used a few years ago for use on a touring road triple that is ready for the 110/74 rings. I intend to use the made in USA Salsa rings in this size. I would like to re-finish the arms by stripping the anodizing, polishing it and then maybe having then powder coated a clear finish.
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08-02-21, 09:31 PM
#55
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My crazy homespun trekking triple that I have built up is "vintage" in a cartoon kind of vintage way... I took 3 gold KCNC "SpiderRings" and mounted these on the correct BCD splined spider that mounts on Cannondale Hollowgram SL crank arms and onto the 30mm Hollowgram bottom bracket. The rings I believe are 24/34/48. I am at work now and cannot post photos yet (but I can later if anyone is interested). I believe the weight on this crank should be pretty low. I will weigh it on my Pampered Chef digital kitchen scale.
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Originally Posted by noglider
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08-02-21, 10:22 PM
#57
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I agree- these are almost too gorgeous to use. If only Shimano would recognize the cult status of this stuff and re-issue some of it.
But short of this there is a real need for a tutorial or better yet, a service - that can restore that lustrous polished, yet protected and clear anodized finish of these lovely period components. I have an M900 crankset that I purchased used a few years ago for use on a touring road triple that is ready for the 110/74 rings. I intend to use the made in USA Salsa rings in this size. I would like to re-finish the arms by stripping the anodizing, polishing it and then maybe having then powder coated a clear finish.
But short of this there is a real need for a tutorial or better yet, a service - that can restore that lustrous polished, yet protected and clear anodized finish of these lovely period components. I have an M900 crankset that I purchased used a few years ago for use on a touring road triple that is ready for the 110/74 rings. I intend to use the made in USA Salsa rings in this size. I would like to re-finish the arms by stripping the anodizing, polishing it and then maybe having then powder coated a clear finish.
I'm not sure of the original finish on the XTR arms. I'm not sure it's anodizing... it actually feels like lacquer. I need to consult an aluminum finishing expert.
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Jeff Wills
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08-03-21, 09:13 AM
#58
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Newly acquired Motobecane Grand Record with various customizations, running a Specialities TA triple and a Super Record RD with Rally long cages. Just discovered yesterday, however, that my 34 chainring is bent and will require replacement. Probably go with a 30 or 32, anyway. Now I just need a freewheel worthy of that long cage.
08-03-21, 10:47 AM
#59
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oh man, C&V is catching up to CNC. Paul derailleurs in 3,2,1...
Given how much easier CNC has gotten in 20 years, how soon are we going to see reproduction home-made cranks? Even better, are people going to start printing hollow steel cranksets?
Given how much easier CNC has gotten in 20 years, how soon are we going to see reproduction home-made cranks? Even better, are people going to start printing hollow steel cranksets?
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08-03-21, 11:08 AM
#60
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Just weighed this at 520g with bolt and washer with 52/42/30 rings, sans pedal . Racing t items are 20 years old now for the newest versions. Qualifies as C&V.
P1050211 on Flickr
P1050211 on Flickr
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