ISO/WTT/WTB: Dura Ace GA 200/first gen crank arms, VG condition, 170 mm or something equally pretty, spare, light.

[Patrick Moore]

Topline Superlight, anyone?*

This would be a vanity component on a vanity bike, tho' a bike that I not only ride, but which is my all-time favorite bike, that 1999 Riv Joe Starck fixie custom. I will use it with a 52 t ring and a 17 t cog to replace the current 46-t Pro 5 Vis crank and 15 t cog.

My vanity insists on pretty and very light. The GA 200 is very light; at least my present one is. Alas, my present one has, unknown when I bought it (tho' I should have foreseen this, given the low price on eBay) a groove worn on the inside right arm by a stupidly misadjusted fd. I say, and insist on, and repeat, "STOOOPID!!!" because how can you not hear or care about the ongoing noise of your fd scooping metal from your right crank arm?

* IMO, and I realize tastes are individual, but IMO, these were the prettiest cranks ever made, anytime, anywhere, except perhaps for some of those skeletally ethereal, top-end steel cranks from the pre-aluminum era. Delicate, chichi, CNC-machined; I had one on my hot rodded '92 gofast XO-1, transfered to my first, 1995 Riv Road custom before it was degraded to fixed gear commuter duty with, when I sold it. I had cracked the arm at the spindle mounting point by neurotically over-torquing the mounting bolt, and Topline said, "Well, there you go," but gave me a break on a replacement. Wish I'd kept that crank. But the GA-200 is close.

The 7410 is very, very pretty too, but I think heavier, and requires a 103 mm bb spindle.

Other suggestions welcome (again, pretty, v. light).

Thanks.

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Patrick Moore

Alburquerque, Nuevo Mexico, Etats Unis d'Amerique, Orbis Terrarum

[Patrick Moore]

Forgot to add: As pretty as the Topline is, the GA-200 better matches the aesthetic of this bike.

[Patrick Moore]

Perhaps I should convert to cottered:

Patrick Moore, who remembers the anguish of keeping cheap, Indian-made cottered cranks in adjustment with the wrong-size cotter pins.

On Sat, Jun 25, 2022 at 3:21 PM Patrick Moore <bert...@gmail.com> wrote:

[Patrick Moore]

Nice!

Some of the lightest cottered cranksets (there were 1 or 2 hollow-arm models, in steel; Duprax?) were almost as light as some of the beefier aluminum cranks, at least comparing arms only.

Duprat: http://www.classicrendezvous.com/France/parts/Duprat/Duprat_hollow_steel.htm

I recall the hassle of trying to get the one-size-only (and cheap) cotters sold in local shops to fit tightly in my (also cheap) crank arms. The left would alway rotate forward under the pressure of pedaling -- since the crank had a single 50 t ring and the bike an about 90" gear, and as I insisted on grunting it as far as I could up steep hills, no wonder. I'd stuff flattened pieces of coathanger wire between cotter and arm to tighten things up; no good.

On Sat, Jun 25, 2022 at 4:00 PM Steven Johnson <smjohn...@gmail.com> wrote:

I did.

Superior durable proven tech you can hit with a hammer.

Steven Johnson, Millersville, MD

[lconley]

You mean these? Custom machined (lighter), show bike take-off on eBay, Within $10 of a new Silver crank:

Laing

[Peter Stock]

I have a set of 170mm 1st Gen DA cranks if you are still looking.
I can send photos later today.

Peter Stock

Toronto, Canada

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[Patrick Moore]

I am very  pleased to say that I just received a very nice 170 mm pair of first gen DA cranks with dustcaps and 52 t ring shipped from Canada for US$143 including paypal fee. They were shipped on the 6th, I missed a day because I had to sign the card left in my mailbox, so that's 4 days or less from Canada. 

Thanks, all.