Thank you very kindly.

Is it normal when adjusting chain tension to have spots that are tighter and/or looser than others? Or does this mean something (chainring or cog) are out of round?

Usually. You can try centering the chainring but it's very uncommon for everything but really high-end chainring to be slightly less than round.

Centering a Chainring | Velowood Cyclery

Scrod, have you ever worked with a white industries eccentric hub? I'm trying to decide what to do with the extra caad frame I have.

Thanks.

how worn is your chainring? They don't wear evenly.

#notscrod #sorryscrod

Brand New. Just installed SRAM S300 crankset and chainring and an All City cog. I'm just running it with more slack for now, so it doesn't bind.

that is troubling.

Not really. As I've already said when I answered his question, it's pretty common for lower-end chainrings to be out of round.

Evening Sir Scrod,

I'm riding a pake with one of your straight blade forks through the streets of Chicago and love the twitch and handling for getting between and around cars. On part of my commute I have a pretty fast downhill section that I'd like to skid slow down on and even throw the tail out a little but I'm a little nervous to get too far up on my handlebars do to the sensitivity of the bike and given the speeds involved. I'm using some bullhorns right now. Can you recommend another bar setup that would allow me to get more on top of the bike safely and where my brake should be just in case ha.

Why not just use a different hand position? You don't need to be busting high-speed skids with your hands way out on the horns.

Scrod,

I plan on building some new wheels with Phil hubs and a White Industries freewheel. If I pair these with a Sugino 75 crank, do I need to compensate for the difference in chainline due to the freewheel?

SheldonBrown.com says that Phil's plus a EAI cog results in a 43.48mm chainline whereas a Phil's plus a White Industries freewheel results in a 45.48 chainline. Would I want to use a 111mm BB instead of the recommended 109mm? Thanks in advance.

I wouldn't bother. I've never lost a wink of sleep over a chainline being off by 2-3mm.

Thank you. Theoretically, does my reasoning make sense? I'm new to the Euro BB/varying chainline thing.

It makes perfect sense, but doesn't really matter enough to worry about.

Would it work to mate 75's with a Campagnolo Pista BB or is that asking for trouble?

But...but...that's 85g more than a Phil Wood BB

As long as the spindle is ISO square-taper, you can use any brand BB you'd like.

Using a Campy Record Pista BB with 75s will move each crank arm out a whopping 1mm.

I see. Learning a lot. Thanks again.

No prob!

To complicate matters even further (though not really), you can safely use an ISO crankset on a JIS spindle too, which results in a 2-3mm width increase on each side. Example, using a 107mm JIS spindle with a crankset requiring a 109mm ISO spindle would result in what would seem like having a 111-113mm spindle. Oh, physics...

See here.

Im glad you posted this. I've been trying to find a cartridge BB 68x112 for my Campy Stradas, and haven't found too much. That opens up alot more possibilities.

A 111mm ISO won't work? You should be able to use a 107mm JIS spindle and get similar results.

edit: However, a Strada crank I recently put on a customer's bike needed a 115mm ISO spindle to get a good chainline and clear the chainstay (set up with a single chainring).

Ugh, i hate "howevers". haha

So yer sayin i probably need the same, a 115 ISO? I found the spec for the BB online Here:

https://velobase.com/ViewComponent.as...f-190893afb431

Yes sir. When the dude came in with that crank, I immediately thought 111mm ISO but there were clearance issues way before I even tightened the crank arm bolts down. I highly doubt that .5mm on each side would be enough.

We've got 115mm Campy Veloce BBs in stock for the same price as the 111mm on our site. Give me a holler if you need one.

Ok cool, I wont be able to order til next Friday, but i'll def do that. Can you get the tool for it as well, at a decent price? That's one tool i don't have.