ISO: 110 BCD crankset
 

ISO taper would be fantastic but I can make JIS work. I've got lots of trade bait - tell me what you're looking for.

WTT - my 27.2mm mountain bike long seatpost for your 26.6. The one I have came from a 1995 Trek 950. I have other tradebait as well ...

Edit: That would be 26.6 mm, according to all the datapoints I can find online ...

ISO a 49cm frame.

I'm looking for a bargain (ie cheap or free) frame for my wife. I have all the parts to build up a road bike for her - except a frame. I was hoping maybe someone here had an old frame they werent using, probably never will use, and wants to find a home for. The frame doesnt need to be something like 531, I'd be happy with a high ten frame if it's decent and the right size. Scratches and old paint is fine too. :)

My wife often rides with me on her 90's era mtb, with me riding my 90's era mtb (lol), but I'd like to get a road bike together for her so we can ride road bikes together - I already have one. Be assured the frame will see many miles, it wont just assembled into a bike that will be ridden a couple times around the block and never used again.

I'd like something that can use DT or stem shifters - nothing modern like brifters. Any questions LMK and thanks!

Editing to add a frame that uses 27" wheels is fine too, I have a nice set I could use. :)

May be nicer than you're looking for but I've got a custom built Paul Barkley Columbus tubed 700c frame in 47.5c ST ctc 52TT ctc. Frame has seen some weathering but it's got a beautiful emerald green paint job. Not looking for much out of it.

ISO: one Campy brake lever bushing to complete the pair

https://s4.postimg.org/k7pegt0e1/lever_Apart.jpg

ISO: 7-speed bar-end shifters
 

I'm in need of a set of 8-speed Shimano bar-end shifters in good working order. Cosmetics are secondary. I have a set of 7-speed bar ends to trade, as well as an assortment of downtube shifters--also other trade goods.

Have you tried to make your existing 7-sp shifters work with an 8-sp cassette? I am currently using a shifter that I thought was 7-sp, but it works fine as an 8-sp. I think I got this shifter from you!

Jon, if what Rudi suggest doesn't work, I have a set of Shimano 8-speed bar ends I'd gladly trade for your 7-speed. Let me know.

It works! I get clean shifts into all 8 cassette cogs with the shifter set in index mode.

But I'm darned if I can see why it works. The shifters came off a 7-speed bike, and when I counted the clicks (with the shifter not yet cabled) I counted six of them, as I recall. Does tensioning the shifter with a cable somehow generate another click? I don't get it. But I do plan to enjoy it--this will be my only bike with index shifting.


Thanks, Rudi!

I cannot explain it, Jon, but I'm glad to hear it! :thumb:

By the way, to give credit where credit is due, [MENTION=238716]TimmyT[/MENTION] is the one who told me I could get eight gears from a seven speed shifter.

There's easily enough lever throw beyond the "click" for what would be the lowest gear.

Maybe, but low gear doesn't seem to be beyond the last click, since it actually clicks into that last gear.

Of course, I also don't completely understand how a bunch of little skinny spokes hold up a wheel. I guess I'll just ride and not think about certain things.

I read Jobst Brandt's book when it first came out. I had to skip the deepest engineering details, as I don't have the background, but I did my best with it, and I still found it fascinating. I recommend it.

Yes, that pretty much describes my experience with the book. I enjoyed how self-assured he was--the guy seemed to have no doubt about anything.

+1, [MENTION=203441]nog[/MENTION]ider has that one pegged. Jobst Brandt's wheel building guide and its engineering analysis are first rate. If you aren't a math person, or not big on engineering principles do as Tom did and skip that, but read up on his wheel building primer and the truing/tensioning section as well. It will be worth the time, and the price if low, Kindle version is remember IIRC.

The section on the Finite Element Analysis of how a spoked wheel functions can get really thick so be aware that Tom has your solution.
[MENTION=52458]jonwvara[/MENTION], I agree with you also. Jobst didn't apologize for much of anything in his writings, very self assured and confident about his findings/techniques.

Bill

I didn't skip the technical stuff entirely. I followed a fair bit of it. One of the most fun parts was where he explained why the wheel works. Since it uses tension, the strength to weight ratio is unlike any other structure. He might have even said it is better than most or all others in that respect.

Were you around when he was active in the rec.bicycles.tech newsgroup? I was, and I had a chance to speak with him a few times. He was self-assured and sometimes abrasive, but his arguments were compelling, and I think he was correct most of the time. I like that he debunked a lot of old cycling folklore, as that was one of his missions.

Unfortunately I wasn't active on that newsgroup, actually the first time I have heard of it. I have read a few different things, that he had posted in other places, over these last few years. I got much the same impression about him. I found that many people with that level of intelligence and in a specific knowledge field, tend to be in the same personality mold that you noted. He gave me the impression that he had studied, or researched a topic and he would defend his take on the subject readily if questioned about its veracity. Kind of like several my professors at university, especially in the core engineering courses, Environmental Engineering and physics in particular.

I wish I had been active in that newsgroup, it sounds like an interesting place to participate, and to learn from. I had the privilege of receiving some replies to questions I posted shortly after I joined here, from Sheldon Brown. I was kind of taken aback that he answered my question about Shimano's RSX component line. I figured that someone with a nearly mythical persona wouldn't take the time to give a newbie and nobody such a complete answer, or even bother. Made me feel like BF might be the place to make a bicycling home for myself. Turned out to be true too.

Bill

You want to shift 8 cogs with a 7-speed SIS shift lever. Starting with "7th Gear" (smallest cog) you click the shift lever 6 times to get to the "1st Gear" position (largest cog on a 7-speed cassette). There is enough shift lever travel beyond the last click to swing the rear derailleur over enough to grab an 8th cog for a new lowest gear. You just need to carefully adjust the low limit on the rear derailleur to allow for the extra swing. The new shift position has no "click" and therefore if the shift lever bolt is a bit loose (too easy to move the lever), it could drift back to that final click. Just increase the bolt tension a bit to solve that problem.
And of course if you switch the shifter to "Friction" I think you could shift anything from 5- to 11-speed. Set your derailleur limits accordingly.

Most people we see having mythical personae (is that the plural?) don't see themselves that way. Sheldon had a humble demeanor.

Jobst was a mechanical engineer and a very accomplished cyclist. A lot of people felt he was too inflexible in his views, but in a way, he had earned that right, since he actually did know more than most people who discussed the topic. The arguments on rec.bicycles.tech got ugly, though, and that's a shame. My motto is that you can't antagonize and influence at the same time.

You can still find his writings in the archives. He died almost exactly two years ago today. Lots of articles came out about him, which might still be up.

TLDR, but who has this copy of Jobst's book, and what do you want to trade it for?

" You can't antagonize and influence at the same time"

Love it! [MENTION=152773]noglider[/MENTION]

I recently got my copy back from the friend I loaned it to 30+ years ago. I'll loan it to you if you give it back more quickly. But I hear the second edition is much improved.

[MENTION=73614]rhm[/MENTION], I will send you my copy please let me know where you want it sent, no recompense necessary or sought. I have read it several times over now, and if I need it for reference, I can get it for my Kindle. PM or email its your call.

Tom, I can remember reading the post here when Mr. Brandt passed away. He could be prickly with some people that he felt were incorrect or being disrespectful.

I didn't mean in any way that Sheldon tried to project the mythical figure image. To me he was much the opposite especially when he was posting here. Pretty laid back guy to me, at least from afar and in reading his articles or posts. You seem to have both Jobst and Sheldon pegged IMHO.

Bill

ISO: 68mm nuovo record bottom bracket spindle. 113mm-115mm.

Want: San Marco Regal
Have: Soma Shikoro 700x28 tires